The discount was 17 dollars and 87 cents.
What is a discount?
A discount is a reduction in the price of a product or service. It can be offered for a variety of reasons, such as to encourage sales or to reward loyal customers.
We have,
price of pair of sunglasses for $66,
coupon code discount of 30%,
15% processing fee to the price.
The final price is:
$66 * (1 - 30%) * (1 + 15%)
$66 * 0.7 * 1.15
$53.13
So, the actual discount is,
$(71 - 53.13)
= $17.87
Hence, the discount was 17 dollars and 87 cents.
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2. Consider the set A = {-2, -1, 0, 1, 2} and the equation Y = -x³ + 2 where x is an element
of A. State the domain, range and determine whether or not the relation, Y = -x³ + 2 is a
function. If it is a function, write the relation in "function notation". Show all your work for
full credit. Hint: you might need to draw a diagram.
SOL FO
3. If f(x) = x² - 2x + 7, evaluate the following:
f(-5)
f (0)
ƒ (1)
The minimum value of Y is -6 and the maximum value is 10. The range is {-6, 1, 2, 3, 10}.
What is the domain and how is the range calculated range ?Domain of Y = -x³ + 2: A = {-2, -1, 0, 1, 2}. The equation is defined for all x in the set A.
Range of Y = -x³ + 2: To find the range, we need to find the minimum and maximum values of Y for x in the set A. Using the formula Y = -x³ + 2, we can substitute the values of x from the set A and find the corresponding values of Y:
x = -2, Y = -(-8) + 2 = 10
x = -1, Y = -(-1) + 2 = 3
x = 0, Y = -(0) + 2 = 2
x = 1, Y = -(1) + 2 = 1
x = 2, Y = -(8) + 2 = -6
Thus, the minimum value of Y is -6 and the maximum value is 10. The range is {-6, 1, 2, 3, 10}.
Relation Y = -x³ + 2 is a function: A relation is a function if every input x in the domain corresponds to only one output Y in the range. To check if the relation is a function, we need to ensure that no two different inputs in the domain result in the same output.
For this relation, every input x in the domain results in only one unique output Y, so the relation is a function.
Function Notation: If the relation is a function, we can write it in function notation as: f(x) = -x³ + 2, where f is the function name and x is the input.
Evaluating f(-5), f(0) and f(1):
f(-5) = -(-125) + 2 = 127
f(0) = -(0) + 2 = 2
f(1) = -(1) + 2 = 1
Thus, f(-5) = 127, f(0) = 2 and f(1) = 1.
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PLEASE HELP ASAP??!!
What is the end behavior of the function f(x) = −x³ + 2x² +1
As a approaches infinity, f(x) approaches infinity. As approaches negative
infinity, f(x) approaches negative infinity.
As a approaches infinity, f(x) approaches negative infinity. As a approaches
negative infinity, f(x) approaches negative infinity.
As a approaches infinity. f(x) approaches negative infinity. As a approaches
negative infinity, f(x) approaches infinity.
As approaches infinity, f(x) approaches infinity. As a approaches negative
The end behavior of the function f(x) = −x³ + 2x² +1 is:
as x → ∞, f(x) → -∞
as x → -∞, f(x) → ∞
What is the end behavior of the function?Here we want to find the end behavior of the function below:
f(x) = −x³ + 2x² +1
Notice that the degree is odd, this means that the end behaviors are opposite in opposite values of x.
Because we have a negative sign on the term with the highest exponent, then as x tends to infinity, the function will tend to negative infinity.
And thus, because the degree is odd, the value of f(x) as x tends to negative infinity tends to positive infinity.
Thus we can write:
as x → ∞, f(x) → -∞
as x → -∞, f(x) → ∞
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There is 3/4 of a large cake left over from a party. Pedro eats 1/2 of the cake that was left. How much cake did he eat?
Pedro ate 3/2 of the cake that was left.
We know that the fraction is used to represent the portion or part of the whole thing.
The fraction has two parts: numerator and denominator.
The top part of fraction is numerator and the bottom part is denominator.
Consider a fraction 1/5.
Here, numerator is 1, denominator is 5
When certain thing is divided into 5 equal parts then each part of is represented by fraction 1/5
In this situation, there is 3/4 of a large cake left over from a party.
Pedro eats 1/2 of the cake that was left.
This means, Pedro eats half of the remaning cake.
We need to find the half of fraction 3/4
We divide fraction 3/4 by 2 in order to find the amount of cake he ate.
[tex]\frac{\frac{3}{4} }{2} \\\\=2\times \frac{3}{4} \\\\=\frac{3}{2}[/tex]
Thus he ate 3/2 of cake.
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For what value of x is JKLM a parallelogram?
4x + 13
4x-1
3x + 20
5X-8
To represents JKLM is a parallelogram the required value of x is equal to 7.
In the parallelogram JKLM,
Let us consider the measure of each side in form of 'x' is represented by :
JK = 4x + 13
KL = 4x - 1
LM = 3x + 20
MJ = 5x - 8
Opposite side of the parallelogram JKLM are congruent to each other.
JK = LM
⇒ 4x + 13 = 3x + 20
⇒ 4x - 3x = 20 - 13
⇒ x = 7
When
KL = MJ
⇒ 4x - 1 = 5x - 8
⇒ 5x - 4x = 8 - 1
⇒ x = 7
JK = 4(7) + 13
= 41
LM = 3(7) + 20
= 41
KL = 4(7) -1
= 27
MJ = 5(7) - 8
= 27
Therefore, the value of x which represents that JKLM is a parallelogram is equal to 7.
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Construct ∠Y so that ∠Y ≅ ∠Z.
The angle ∠Y so that ∠Y ≅ ∠Z is added as an attachment
How to construct the angleFrom the question, we have the following parameters that can be used in our computation:
Construct ∠Y so that ∠Y ≅ ∠Z.
There are several ways to do this, some of them are:
Construct an isosceles triangle and name the base angles Y and ZConstruct a rectangle or a square and name any of the vertices Y and ZThe above statements are true because the base angles of an isosceles triangle are congruent and all angles in a rectangle/square are congruent
See attachment
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A
Which of the following is equivalent to
3^sqrt32x³y^6/ 3^ sqrt 2x^9 y^2
If the expression be [tex]$\frac{\sqrt[3]{32 x^3 y^6}}{\sqrt[3]{2 x^9 y^2}}$[/tex] then the equivalent expression exists [tex]$\frac{\sqrt[3]{16 y^4}}{\sqrt[3]{x^6}}$$[/tex].
What is meant by expression?A mathematical expression is a phrase that has a minimum of two numbers or variables and at least one mathematical operation. It is possible to multiply, divide, add, or subtract in math.
Expression is a term used in mathematics to describe a grouping of numbers, variables, and operators that illustrates the value of something. A mathematical statement that has two expressions that are equal is known as an equation. A phrase fragment can be used as an expression to represent a single numerical value.
An expression in mathematics is a sentence made up of terms and operations. Terms may be variables with coefficients or constant (numeric) values. Addition, subtraction, multiplication, and division are all possible operations.
Let the given expression be [tex]$\frac{\sqrt[3]{32 x^3 y^6}}{\sqrt[3]{2 x^9 y^2}}$$[/tex]
Apply radical rule: [tex]$\frac{\sqrt[n]{a}}{\sqrt[n]{b}}=\sqrt[n]{\frac{a}{b}}, \quad$[/tex] assuming [tex]$a \geq 0, b \geq 0$[/tex]
[tex]$$\begin{aligned}& \frac{\sqrt[3]{32 x^3 y^6}}{\sqrt[3]{2 x^9 y^2}}=\sqrt[3]{\frac{32 x^3 y^6}{2 x^9 y^2}} \\& =\sqrt[3]{\frac{32 x^3 y^6}{2 x^9 y^2}}\end{aligned}$$[/tex]
simplifying the above equation, we get
[tex]$\frac{32 x^3 y^6}{2 x^9 y^2}: \frac{16 y^4}{x^6}$[/tex]
[tex]$=\sqrt[3]{\frac{16 y^4}{x^6}}$$[/tex]
Apply radical rule: [tex]$\sqrt[n]{\frac{a}{b}}=\frac{\sqrt[n]{a}}{\sqrt[n]{b}}, \quad$[/tex] assuming [tex]$a \geq 0, b \geq 0$[/tex]
[tex]$=\frac{\sqrt[3]{16 y^4}}{\sqrt[3]{x^6}}$$[/tex]
Therefore, the correct answer is option c.
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Answer:
option c
Step-by-step explanation:
edge 2023
1. a certain college wants to estimate the amount of time students, who live off campus, spend commuting to classes each week. a random sample of 45 off-campus students is surveyed. a) identify the population and sample for this study. b) what data is being collected? what type of data is this? c) what type of study is this?
The objective of this research is to collect data on a specific component of the off-campus student population.The amount of time they spend travelling to courses each week.
a) The population for this study is all off-campus students at this college, and the sample is a random sample of 45 off-campus students who are polled. The sample is chosen at random to be representative of the entire population.
b) The data being gathered is the amount of time the surveyed students spend each week travelling to school. Because it reflects a numerical measurement, this is quantitative data. This information will be used to calculate the average commuting time for off-campus students and to identify any possible concerns or areas for improvement in commuting.
c) This is a descriptive research, since it seeks to characterise and summarise the features of the off-campus student population in terms of commuting time. The study's purpose is to better understand off-campus students' commuting patterns and gather ideas into how to enhance their commuting experience.
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Use technology to find points and then graph the function
y
=
−
x
+
1
+
5
y=−
x+1
+5 following the instructions below.
done plotting points
Plot at least four points from the table of values with integer coordinates on the axes below. Click a point to delete it.
The graph and the points are added as an attachment
How to determine the graph?From the question, we have the following parameters that can be used in our computation:
y = -x + 1 + 5
Evaluate the like terms
y = -x + 6
Set x = values from 0 to 3
So, we have
y = -0 + 6 = 6
y = -1 + 6 = 5
y = -2 + 6 = 4
y = -3 + 6 = 3
So, the points are (0, 6), (1, 5), (2, 4) and (3, 3)
Next, we plot the graph and the points
See attachment
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Identify the linear function I’ll give brainliest
Answer:
A
Step-by-step explanation:
Any equation with a single independant variable (often an 'X') that is not ( x2,x3 ) is linear.
height is an example of a variable that uses the _____ scale.
Height is an example of a variable that uses the ratio scale.
Hence, option (a) is the correct choice.
Weight, height, and distance are all ratio variables. The ratio scale allows you to add, subtract, divide, and multiply data. Ratio scales are further distinguished from interval scales by the presence of a 'true zero'.
Height is an excellent example of a measuring scale based on a ratio. It is not nominal or ordinal since each change in the height unit (inches, metres, feet, etc.) has a standard distance between them, and it is not interval because height has a genuine zero.
Height, for example, is ratio data. There is no such thing as negative height. If the height of an item is 0, there is no object. This is not the same as talking about temperature.
The complete question should be:
Height is an example of a variable that uses the scale.
a. ratio b. interval c. nominal d. ordinal
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Find the Area of the figure below, composed of a square and four semicircles. Rounded to the nearest tenths place
12
Answer:
370.1 [tex]units^{2}[/tex]
Step-by-step explanation:
Square
a = [tex]s^{2}[/tex]
a = [tex]12^{2}[/tex] = 144
Semi - Circle:
a = 1/2([tex]\pi r^{2}[/tex])
a = 1/2(3.14)(36) The radius is 1/2 the diameter of 12 (6) [tex]6^{2}[/tex] = 36
a = 1/2(113.04)
a = 56.52
144 + 4(56.52)
144 + 226.08
370.08 rounded to the nearest tenths place 370.1
Mr.Todd want to paint the outide of the birdhoue. How much paint doe he need to buy to cover the outide of the entire birdhoue( rounded to the nearet hundredth). Explain how much and how you know in at leat two entence.
The amount of paint needed is 176/36000 = 0.0049 gallons, which is equivalent to 4.9 milliliters, rounded to the nearest hundredth.
To calculate how much paint Mr.Todd needs to buy to cover the outside of the entire birdhouse, we must first know the dimensions of the birdhouse. Let's assume the birdhouse has the dimensions of 10 inches long, 8 inches wide and 6 inches tall, and each side requires 1 coat of paint. The total surface area of the birdhouse is then 10 x 8 + 10 x 6 + 8 x 6 = 176 inches squared. Next, we need to know the coverage of the paint, which we will assume is 250 square feet per gallon. Since 1 square foot is equal to 144 square inches, the coverage of the paint is 36000 square inches per gallon. To find out how many gallons of paint are needed to cover the birdhouse, we need to divide the total surface area of the birdhouse (176 square inches) by the coverage of the paint (36000 square inches per gallon). Therefore, the amount of paint needed is 176/36000 = 0.0049 gallons, which is equivalent to 4.9 milliliters, rounded to the nearest hundredth.
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at time , a tank contains oz of salt dissolved in gallons of water. then brine containing oz of salt per gallon of brine is allowed to enter the tank at a rate of gal/min and the mixed solution is drained from the tank at the same rate. (a) how much salt is in the tank at an arbitrary time? 200-140e^(-t/25) oz. (b) how much salt is in the tank at time min?
The amount of salt in the tank is decreasing exponentially with time.
At time t, the amount of salt in a tank containing oz of salt dissolved in gallons of water can be calculated using the following formula:
Salt in tank (oz) = 200 - 140e^(-t/25)
For example, at time t = 10 min, the amount of salt in the tank is 200 - 140e^(-10/25) = 200 - 140(0.7787) = 124.42 oz.
This calculation assumes that brine containing oz of salt per gallon of brine is allowed to enter the tank at a rate of gal/min and the mixed solution is drained from the tank at the same rate. Thus, the amount of salt in the tank is decreasing exponentially with time.
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If you guys can solve the sheet, I will crown your braincrown thing
Goodluck
The values of x from the given figures are 3 √29 and 24 respectively.
What is triangle ?
Triangle can be defined in which it has three sides , three angles and sum of three angles is always 180 degrees.
Given
In the figure,
The two given triangles are similar ,
So, in the first figure it is given that they are similar ,
√29 / 5 = x / 15
x = √29 * 15 / 5
x =√29 * 3
x = 3 √29
And in the second figure , here also they gave they are similar
so we get,
12 / 13 = x / 26
x = 12 * 26 / 13
x = 12 * 2
x = 24
Hence, The values of x from the given figures are 3 √29 and 24 respectively.
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what is the image of (9,8) after a dilation by a scale factor of 5 centered at the origin?
Answer: (-45 , -25)
Step-by-step explanation:
Please mark brainliest!!
The human resource department at a certain company wants to conduct a survey regarding worker benefits. The department has an alphabetical list of all 2974 employees at the company and wants to
conduct a systematic sample of size 30.
what is k?
Answer:ugy8f67
Step-by-step explanation: yessss
21•15 equals
(20+1)•15
Find the area of the polygon with the given vertices. $K(-3,3),L(3,3),M(3,-1),N(-3,-1)$
The area of the polygon is 24 unit².
What is Polygons?Polygons are closed figures which has at least three set of line segments joined together.
The polygon with least number of sides is triangle.
We have four coordinates of vertices given, K(-3,3), L(3,3), M(3,-1), N(-3,-1).
So the polygon must be a quadrilateral.
Length of KL = [tex]\sqrt{(3--3)^{2} + (3-3)^2 }[/tex] = [tex]\sqrt{6^2}[/tex] = 6
Length of LM = [tex]\sqrt{(3-3)^2+(-1-3)^2}[/tex] = [tex]\sqrt{(-4)^2}[/tex] = 4
Length of MN =[tex]\sqrt{(-3-3)^2+(-1--1)^2}[/tex] = [tex]\sqrt{(-6)^2}[/tex] = 6
Length of NK = [tex]\sqrt{(-3--3)^2+(3--1)^2}[/tex] = [tex]\sqrt{4^2}[/tex] = 4
So we get that, opposite sides are having equal length.
So the polygon must be a rectangle.
Area of the rectangle = Length × Width
= 6 × 4
= 24 units²
Hence the area of the polygon with the given vertices is 24 unit².
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Donna Wagner is a self-employed musician. She pays 100 percent of the PPO insurance premium of 5,824 annually. She also has a dental plan that costs 600 annually and a vision plan that costs 365 annually. What is her total monthly premium for all her insurance
The total monthly premium for all her insurance is 6249 .
What is percentage ?
Percentage can be defined as the product of ratio of given value , total value and hundred.
Given ,
Donna Wagner is a self-employed musician. She pays 100 percent of the PPO insurance premium of 5,824 annually.
She also has a dental plan that costs 600 annually and a vision plan that costs 365 annually.
The total monthly premium for all her insurance = 5284+600+365
= 6249.
So, The total total monthly premium for all her insurance is 6249 .
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Triangle ABC is being enlarged using a scale factor of 2 and the origin as the centre to give triangle A'B'C'. Work out the coordinates of A' and B'. -10-9-8-7-6-5- 3- RE 2+ ¹C B .... 0 1-2-3-4-5-6-7-8 11 21 -3- 4 +5+ 6- -7- -8- -9- -10+
Answer:
Triangle ABC is being enlarged using a scale factor of 2 and the origin as the center to give triangle A'B'C'. To find the coordinates of A' and B', we will have to multiply each of the x and y coordinates of A and B by the scale factor of 2.
The coordinates of A are (-5, -6) and the coordinates of B are (2, 3)
The coordinates of A' will be (-52, -62) = (-10, -12)
The coordinates of B' will be (22, 32) = (4, 6)
So the coordinates of A' are (-10, -12) and the coordinates of B' are (4, 6).
what is the name for an equilateral triangle
Answer:
equiangular triangle
Step-by-step explanation:
What is the equation of a line that passes through the points (3, 6) and (8,4)?
y-2/x-2/2
y-2/x-27
y=-x-24
y=-x+36
Answer:
4th option
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (3, 6 ) and (x₂, y₂ ) = (8, 4 )
m = [tex]\frac{4-6}{8-3}[/tex] = [tex]\frac{-2}{5}[/tex] = - [tex]\frac{2}{5}[/tex] , then
y = - [tex]\frac{2}{5}[/tex] x + c ← is the partial equation
to find c substitute either of the 2 points into the partial equation
using (8, 4 ) , then
4 = - [tex]\frac{2}{5}[/tex] (8) + c = - [tex]\frac{16}{5}[/tex] + c ( add [tex]\frac{16}{5}[/tex] to both sides )
[tex]\frac{20}{5}[/tex] + [tex]\frac{16}{5}[/tex] = c , that is
c = [tex]\frac{36}{5}[/tex]
y = - [tex]\frac{2}{5}[/tex] x + [tex]\frac{36}{5}[/tex] ← equation of line
John sells cupcakes. He has been offered a salary position at two different companies to make and sell his cupcakes. The first company offered him a weekly salary of $ 800.00 $800.00 plus a commission of $ 0.30 $0.30 for each cupcake he sells. The second company offered him a weekly salary of $ 350.00 $350.00 plus a commission of $ 1.30 $1.30 for each cupcake he sells. How many cupcakes must John sell each week for the total pay from each company to be the same?
PLEASE ANSWER FAST WORTH 92 POINTS
Answer:
450 cupcakes
Step-by-step explanation:
Let x be the number of cupcakes sold for John's total pay to be the same for both companies
For the first company
Salary = $800/week
Commission is $0.30 per cupcake
For sales of x cupcakes, total commission = 0.30x
Total pay = Weekly salary + Total commission from sales
Total Pay = 800+ 0.3x
For the second company
Salary = 350 /week
Commission: $1.30 per cupcake
For sales of x cupcakes, total commission = 1.30x
Total Pay = Weekly salary + Total commission from sales
Total Pay = 350 + 1.3x
If both pay must be he same,
800 + 0.3x = 350 + 1.3x
800-350 = 1.3x - 0.3x
450 = 1x
x = 450 cupcakes ANSWER
Answer: 450
Step-by-step explanation:
If we let x and y represent the number of cupcakes John sells and his total weekly income, respectively, we get the following system of equations.
=0.35x+845
=1.4x+372.5
Since both equations are solved for y, any substitution for y will result in the following
211.4 x+372.5&=0.35
x+845
1.4x+372.5
=0.35x+845
Solving for x will give us the number of cupcakes John needs to sell weekly for each paycheck to be the same. Doing so, we get
1.4 x+372.5&=0.35 x+845
1.05 x&=472.5x=450
1.4x+372.5
1.05x
x
=0.35x+845
=472.5
=450
Therefore, John needs to sell 450450 cupcakes each week for both salaries to be the same.
Carol is cross-country skiing. The table shows the distance she traveled after various numbers of minutes. What is the rate of change?
The rate of change for the Carol with respect to time is 3/16 miles per minute.
What is the rate of change?The rate of change (ROC) measures how quickly a variable alters over a predetermined amount of time. When discussing momentum, the term "rate of change" (ROC) is frequently used. It is typically defined as the ratio of a change in one variable to a matching change in another; visually, the rate of change is represented by the slope of a line.
Given The table shows the distance Carol traveled after various numbers of minutes,
Input Output
2 1/6
3 17/48
4 13/24
5 35/48
6 11/12
Here, the output values from 1/6 to 11/12 indicate the distance in miles whereas the input values from 2 to 6 describe the time in minutes.
by utilizing the first two sets of input-output numbers, calculating the rate of change
Relative change = change in distance/change in time
(17/48 - 1/6)/(3-2) = (17/48 - 8/48) /1 = 9/48 = 3/16 miles per minute
Hence the rate of change is 3/16 miles per minute.
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Write an equation that represents the line use exact numbers
The equation of the line is 6x-5y = 25.
What is equation of line?
When the slope of the line being studied is known, and the provided point is also the y intercept, the slope intercept formula, y = mx + b, is utilised (0, b). It provides both a slope and an intercept, which is why the form is known as the slope-intercept equation.
Here in the given graph the points are [tex](x_1,y_1)=(0,-5)[/tex] and [tex](x_2,y_2)=(5,1)[/tex]
Now using slope formula m = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
=> slope m = [tex]\frac{1-(-5)}{5-0}[/tex]
=> m = [tex]\frac{1+5}{5} = \frac{6}{5}[/tex]
Now using equation formula [tex]y-y_1 = m(x-x_1)[/tex] then
=> [tex]y - (-5) = \frac{6}{5}(x-0)[/tex]
=> y+5 = [tex]\frac{6}{5}[/tex]x
=> 5y+25 = 6x
=> 6x-5y = 25.
Hence the equation of line is 6x-5y = 25.
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A ball freely falling at 20 m/s will in the next second have a speed of ______. 30 m/s. What two units of measurement are necessary for describing speed?
Meters and seconds are the two units of measurement required to describe speed.
A ball freely falling at 20 m/s will in the next second have a speed of 30 m/s.This is because the speed of a freely falling item rises by 9.8 m/s per second owing to gravity's acceleration. The ball begins at a speed of 20 m/s and adds 9.8 m/s to its initial speed after one second, ending in a final speed of 20 + 9.8 = 29.8 m/s (approx. 30 m/s).
Meters and seconds are the two units of measurement required to describe speed. These units are used to calculate the distance travelled by an item as well as the time it takes to traverse that distance. In this scenario, the ball's speed is measured in metres per second (m/s), which is the distance the ball travels in one second.
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Eddie is getting balloons for his mothers birthday party. He wants each ballon string to be 6 feet long. At the party store, string is sold by the yard. If Eddie wants to get 77 balloons, how many yards of string will he need
Answer:
462
Step-by-step explanation:
do 6x77 which is 462. alternative forms: 4.62 x 10^2
SEND HELP PLS IM BEGGING YIU
Answer:
B
Step-by-step explanation:
Because all four packages of baseball cards added up together makes 76 cards, and since 6 is over 5 that makes it closer to 80.
Answer: 1st Package: 17 = 20
2nd Package: 21 = 20
3rd Package: 22 = 20
4th Package: 16 = 20
Total Amount of Cards: 20 + 20 + 20 + 20 = 80
I hope this helps! :)
Step-by-step explanation:
Multiply.
(2x² - 4x)(6x² - 5x)
O A. 124-34x² + 20x
OB. 124-10x³ + 20x²
O C. 12x - 34x³ + 20x²
OD. 12-10x² + 20x
sorry for the side view if any one could do this step by step you would be a life saver
Answer:
pls see attached
Step-by-step explanation: