Answer:
0.7
Step-by-step explanation:
Answer: 0.7
Step-by-step explanation: The tenths place in decimals is the number directly to the right of the decimal. the 5 next to the six is greater than or equal to 5 meaning you can round up the 6 to a 7.
Please answer questions 1-6. They are not multiple choice and they are not linked together.
The perimeter of the triangle will be 36.
The value of x in the triangle will be 101°.
The value of y will be 3x
How to calculate the valuesIt should be noted that the total sum of the angles that are in a triangle is 180°. It should be noted that the triangle is a Equilateral Triangle. In this case, since one of the sides is 12, the perimeter will be:
= 12 + 12 + 12
= 36
The value of x in the triangle will be:
= 180° - (22 + 57)
= 180° - 79°
= 101°.
The value of y will be 3x as vertically opposite angles are equal.
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what Is an array because it's kinda hard I'm in elementary school and I'm on 4th grade but it's very hard .
Answer: An array is a collection of items of same data type stored at contiguous memory locations.
Step-by-step explanation: There you go dude happy to help
A ball is thrown directly with an initial speed of 7.30 m/s from a height of 2.91. After what time intervals does it strike the ground?
The ball strikes the grοund after apprοximately 1.07 secοnds.
What is Time, Speed and Distance?Time: a measured οr measurable periοd during which an actiοn, prοcess, οr cοnditiοn exists οr cοntinues.
Speed: the rate at which sοmething mοves, οperates, οr happens.
Distance: the amοunt οf space between twο pοints οr οbjects.
We can sοlve this prοblem using the kinematic equatiοns οf mοtiοn. We knοw the initial velοcity (u = 7.30 m/s), the initial height (h = 2.91 m), and we want tο find the time taken fοr the ball tο hit the grοund (t).
Let's use the kinematic equatiοn that relates the final pοsitiοn (s), initial pοsitiοn (h), initial velοcity (u), acceleratiοn (a), and time (t):
[tex]s = h + ut + (1/2)at^2[/tex]
Since the ball is thrοwn vertically dοwnwards, the acceleratiοn is [tex]-9.81 m/s^2[/tex] (negative because it is in the οppοsite directiοn tο the initial velοcity).
At the mοment the ball hits the grοund, its final pοsitiοn s is zerο. Therefοre, we can rewrite the equatiοn as:
[tex]0 = h + ut + (1/2)at^2[/tex]
Solving for t, we get:
[tex]t = [-u\±\sqrt{(u^2 - 2ah)} ] / a[/tex]
We take the positive solution, since time cannot be negative. Substituting the values we get:
[tex]t = [ -7.30 \± \sqrt{((7.30)^2 - 2(-9.81)(2.91))} ] / (-9.81)[/tex]
[tex]t = [ -7.30 \± \sqrt{ (53.25)} ] / (-9.81)[/tex]
t ≈ 1.07 s οr t ≈ 0.31 s
The negative sοlutiοn dοesn't make physical sense in this cοntext, sο we discard it. Therefοre, the ball strikes the grοund after apprοximately 1.07 secοnds.
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help with This Math
Answer:
38°
Step-by-step explanation:
this equal to 38° because angle EGD and angle IGJ are corresponding angles
Use the vertex to find the general form equation on the quadratic function
The general form of the equation of this quadratic function is f(x) = x² - 2x + 1.
What is a quadratic equation?In Mathematics, the standard form of a quadratic equation is represented by the following mathematical equation;
ax² + bx + c = 0
Based on the information provided about this quadratic equation, it comprises the following ordered pairs;
Center (h, k) = (1, 0),
(x, y) = (0, 1).
By substituting the ordered pairs into the standard form of a quadratic equation, we have:
f(x) = a(x - h)² + k
1 = a(0 - 1)² + 0
1 = a
Therefore, the required quadratic equation is given by:
f(x) = 1(x - 1)² + 0
f(x) = (x - 1)(x - 1)
f(x) = x² - x - x + 1
f(x) = x² - 2x + 1
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find the value of the expression -x^3+3 x^2-x+20 if x=-1
The value of the expression -x³ + 3x² - x + 20 when x = -1 is 23.
What is the value of the given expression when x = -1?Given the expression in the question;
-x³ + 3x² - x + 20
x = -1To determine the value of the expression,
First, we substitute -1 for x in the expression:
-( -1 )³ + 3( -1 )² − ( -1 )) + 20
Next, we simplify each term using the order of operations (also known as PEMDAS):
-( -1 )³ = -( -1 ) = 1
(recall that the exponent is evaluated first, then the negative sign is applied)
3( -1 )² = 3(1) = 3
(recall that the exponent is evaluated first)
-( -1 ) = 1
(recall that subtracting a negative is the same as adding a positive)
Now, putting these simplified terms back into the original expression, we get:
1 + 3 + 1 + 20
Finally, we add these terms together to get the final answer:
23
Therefore, the value of the expression is 23.
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The measures of the angles of a triangle are shown in the figure below. Solve for x.
According to the solving Triangle The Value of X in the given figure is 20°
What is Triangle?Triangles are three-sided polygons with three vertices. The angles of the triangle are formed by connecting the three sides end to end at a point. The total of the triangle's three angles equals 180 degrees which is called interior angles.
According to the given information:The three angles are given as ∠1=84°, ∠2=41°, ∠3=2x+15°.
Adding three angles
84° + 41° + 2x + 15° = 180° (sum of interior angle is 180°)
140° + 2x = 180°
2x = 180°-140°
2x = 40°
x = 20°
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Solve for y when x = -8. k=-5 y = [?] Remember: y=kx
i would thank you so much if someone could give me a valid answer please and graph please thank you love
The equation would be y = 0.50x + 10.00, and we have drawn the graph for the same.
What is the graph of the equation?
The graph of an equation is a visual representation of the set of all solutions (points) that satisfy the equation.
To find the equation of the line, we use the slope-intercept form of a linear equation, which is:
y = mx + b
where m is the slope of the line and b is the y-intercept (the point where the line crosses the y-axis).
In this case, we are given the slope of the line (0.50) and the y-intercept (10.00), so we can simply substitute these values into the equation:
y = 0.50x + 10.00
This gives us the equation of the line in slope-intercept form. We can use this equation to find the cost of a cab ride for any distance x (in miles) by substituting the value of x into the equation and solving for y (the fare).
Now let's draw the graph of the equation y = 0.50x + 10.00, we get
Hence, the equation would be y = 0.50x + 10.00, and we have drawn the graph for the same.
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A student has x sweets.she gives 20 to her friends. if one third of the remainder is equal to one fifth of the original number of sweets,find the original number of sweets
Answer:
50 sweets
Step-by-step explanation:
Let's work through the problem step by step:
The student starts with x sweets.
She gives away 20 sweets to her friends, so she is left with (x - 20) sweets.
One third of the remainder is equal to one fifth of the original number of sweets. In other words, (1/3)(x - 20) = (1/5)x.
To solve for x, we can start by multiplying both sides of the equation by 15 (the least common multiple of 3 and 5) to eliminate the fractions:
5(x - 20) = 3x
5x - 100 = 3x
2x = 100
x = 50
Therefore, the original number of sweets was 50.
trey paid 42 dollars for 2/3 ton of concrete. he wants to know the price of 3 tons of concrete.
Answer:
To find the price of 3 tons of concrete, we need to first figure out how much Trey paid per ton of concrete.
Since Trey paid 42 dollars for 2/3 ton of concrete, we can set up a proportion:
2/3 ton = 42 dollars
1 ton = x dollars
To solve for x, we can cross-multiply:
(2/3) * x = 42 * 1
2x = 126
x = 63
So, Trey paid 63 dollars per ton of concrete.
To find the price of 3 tons of concrete, we can multiply the cost per ton by the number of tons:
3 tons * $63/ton = $189
Therefore, the price of 3 tons of concrete is $189.
I have about 10 minutes pls help
In triangles ABC and PQR, the ratio of the measure of side AB and side PQ is 2 : 3 and the ratio of the measure of sides BC and QR is 2 : 3. Thus, AB/PQ = BC/QR. Also, the m∠B = m∠Q. The ratio of two pairs of corresponding sides is congruent and the included angle is equal. Hence, ΔABC ~ ΔPQR by SAS similarity theorem.
What is SAS similarity theorem?SAS similarity theorem is a theorem in geometry that stands for "Side-Angle-Side Similarity Theorem".
This theorem states that if two triangles have two pairs of corresponding sides that are proportional in length, and the included angles between these sides are congruent (have the same measure), then the two triangles are similar.
We can see that examining the two triangles, it is clear that it is in line with SAS similarity theorem.
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Need help. My assignment is due in an hour. Will be much appreciated!
The inverse functions and the domains and ranges of the inverse functions can be presented as follows;
A. The inverse function of f(x) is; [tex]f^{-1}(x) = \frac{3-x}{7\cdot x}[/tex]
B. f(g(x)) = [tex]\frac{3}{7\times \frac{(3-x)}{7\cdot x} + 1}[/tex] = x
C. The inverse function reverses the effect of the function. The inverse function is therefore;
x [tex]{}[/tex] y
10[tex]{}[/tex] 5
6[tex]{}[/tex] 8
5[tex]{}[/tex] 9
4[tex]{}[/tex] 13
2) Domain; 10, 6, 5, 4
Range; 5, 8, 9, 13
What is the inverse of a function?An inverse function maps the output, or y-value of a function to the input value or x-value of the function.
2. A. f(x) = 3/(7·x + 1)
The inverse function can be found as follows;
Let f(x) = y
y = 3/(7·x + 1)
(7·x + 1) = 3/y
7·x = (3/y) - 1 = (3 - y)/y
x = (3 - y)/(7·y)
Plugging in x = f⁻¹(x), and y = x, to get;
The inverse of the function; f⁻¹(x) = (3 - x)/(7·x)B. g(x) = (3 - x)/(7·x)
f(x) = 3/(7·x + 1)
f(g(x)) = 3/(7 × ((3 - x)/(7·x)) + 1) = 3/(((3 - x)/(x)) + 1) = 3/(3/x - 1 + 1)
3/((3/x - 1 + 1) = 3/(3/x) = 3 × x/3 = x
Therefore; f(g(x)) = 3/(7 × ((3 - x)/(7·x)) + 1) = x
C. The inverse of the function is the function that produces the input of the function from the function's output, therefore, the inverse of the function can be presented as follows;
x [tex]{}[/tex] y
10[tex]{}[/tex] 5
6[tex]{}[/tex] 8
5[tex]{}[/tex] 9
4[tex]{}[/tex] 13
2) The domain is the set of the possible inputs of the function, and the range is the set of the possible outputs of the function.
The domain of the inverse function is; 10, 6, 5, 4The range of the inverse function is; 5. 8. 9. 13Learn more on the inverse of a function here: https://brainly.com/question/9007328
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What is the radius of the circle that is centered at (2, −3) and passes through the point (−1, −6)?
Answer:
We can use the distance formula to find the distance between the center of the circle (2, -3) and the point (-1, -6), which should be equal to the radius of the circle.
Step-by-step explanation:
Distance = √[(x2 - x1)² + (y2 - y1)²]
Distance = √[(-1 - 2)² + (-6 - (-3))²]
Distance = √[(-3)² + (-3)²]
Distance = √(18)
So the radius of the circle is equal to √(18) or approximately 4.24.
What is the perimeter of △ DEF to the nearest tenth? A. 19.4 B. 20.1 C. 25.3 D. 43.3
Based on the above, the Perimeter of the triangle DEF is 43.3 units
What is an equation?A mathematical statement known as an equation demonstrates the relationship between two or more numbers and variables by utilizing mathematical operations such as addition, reduction, multiplication, division, exponents, and so forth.
Given the triangle DEF. Using trigonometric ratio:
sin(38) = EF / 18EF = 11.1
Also: cos(38) = DF / 18DF = 14.2
The perimeter of triangle
DEF = DE + EF + DF
= 18 + 11.1 + 14.2 = 43.3 units
Hence, the Perimeter is 43.3 units
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what 2 distributive property expressions equal to 108
The distributive property expressions 3(20 + 16) and 4(13 + 14) are equal to 108
What is an equation?An equation is an expression that shows how two or more numbers and variables are related using mathematical operations of addition, subtraction, multiplication, division, exponents and so on.
The distributive property is given as:
a(b + c) = ab + ac
3(20 + 16) = 3(20) + 3(16) = 60 + 48 = 108
Also:
4(13 + 14) = 4(13) + 4(14) = 52 + 56 = 108
The distributive property expressions 3(20 + 16) and 4(13 + 14) are equal to 108
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Please help i neeeeeeeeeeed iiittt
Answer:
C.
Step-by-step:
The measure of angle A is congruent to the measure of angle P.
Identify the domain and range of the exponential function.
I am trying to help my son with his math and am about to cry. Lol. May you please help me? Thank you
The domain and range of given graph is Domain: (-∞, ∞) Range: (0, ∞)
What is Function ?
Function can be defined in which it relates an input to output.
The horizontal axis (x-axis) represents the input values, while the vertical axis (y-axis) represents the output values.
To identify the domain and range of this function from the graph, we can look at the values that the function takes on as well as the values that are excluded.
From the graph, we can see that the function appears to be increasing without bound as the input values increase. This means that the domain of the function is all real numbers or (-∞, ∞).
We can also see that the function appears to be taking on only positive values, and never touches or crosses the x-axis. This means that the range of the function is all positive numbers or (0, ∞).
Therefore, The domain and range of given graph is Domain: (-∞, ∞) Range: (0, ∞)
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Find (f.g)(x) for f(x) = 4x - 9 and g(x)=3x^2. Show all work for full credit.
Answer:
The answer is (f.g)(x) = 12x^2 - 9.
Step-by-step explanation:
To find (f.g)(x), we need to apply the composition of functions formula, which is:
(f.g)(x) = f(g(x))
First, we need to find g(x):
g(x) = 3x^2
Now, we need to plug g(x) into f(x) in place of x:
f(g(x)) = 4(g(x)) - 9
= 4(3x^2) - 9
= 12x^2 - 9
Therefore, (f.g)(x) = 12x^2 - 9.
Hope this helps, I'm sorry if it doesn't! If you need more help, ask me! :]
Does anyone know the answer?
Answer:
A
Step-by-step explanation:
Range referes to the smallest and largest values, so the answer you have circles is correct.
Good Job!
Answer: A) Range
Step-by-step explanation:
The range is the difference between the biggest and smallest numbers (or, in this case, folders). If Jack wants to find a notebook that will fit a small and large folder, he will need to find the range.
a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with garlic rocessed tablet form. Cholesterol levels were measured before and after the treatment. The chan before-after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.1 and a standard devi 16.5. Construct a 99% confidence interval estimate of the mean net change in LDL cholesterol afte reatment. What does the confidence interval suggest about the effectiveness of garlic in reducing Cholesterol? Click here to view a t distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. E What is the confidence interval estimate of the population mean μ? mg/dL
]Therefore , the solution of the given problem of deviation comes out to be the confidence interval contains both positive and negative values.
Standard deviation : What is it?Statistics uses variance as a gauge of difference. The image of that figure is used to compute the average variance between the collection and the mean. It includes those data points itself into the calculations, unlike many other real measures of variability, by comparing also every figure to the mean.
Here,
Since the population standard deviation is unknown and the sample number is less than 30, we can use a t-distribution to build the confidence interval. The confidence interval's calculation is:
=>CI = x t /2 × (s/n).
Since we need a 99% confidence range, = 0.01 and /2 = 0.005, and (n-1) = (49-1) = 48 is the number of degrees of freedom.
We discover that t/2 = 2.678 using the t-distribution table with 48 degrees of freedom and 0.005 significance level.
When we enter the numbers, we obtain:
=> CI = 3.1 ± 2.678 * (16.5/√49) = 3.1 ± 7.34
The estimated mean net change in LDL cholesterol following treatment, according to the 99% confidence range, is (4.24, 10.44) mg/dL.
We cannot say with 99% certainty that garlic is effective at lowering cholesterol because the confidence interval contains both positive and negative values.
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help asap pls
my assignment is due tonight at midnight
Answer:
See below.
Step-by-step explanation:
We're asked to prove that ΔSTV ≅ ΔTUW.
Let's begin by reviewing what was given to us.
Line Segment SV ≅ & ║ (Congruent and Parallel With) Line Segment TW.∠SVT ≅∠TWU.SV ≅ TW.Because we already have one side and an angle congruent, we need to prove that another angle or side is congruent.
Our goal is to find a Congruency Postulate to prove that ΔSTV ≅ ΔTUW.
As we can see in the diagram, ∠STV ≅ ∠UTV as they're vertical angles. This is possible because Line Segment SV ≅ & ║ Line Segment TW.
We are now able to prove that ΔSTV ≅ ΔTUW with the Angle-Side-Angle Triangle Congruency Postulate (ASA). We proved, and were given 2 angles, and 1 side.
Summary:
∠STV ≅ ∠UTV | Vertical Angles.
ΔSTV ≅ ΔTUW | ASA.
For each quadratic function below, use the idea of completing the square to write it in graphing form. Then state the vertex of each parabola. a. f(x)=x² +6x+15 b. y= x^2-4x+9 c. f(x)= x² +8x d. y=x² - 4x+9
please help i don't want answers just somebody to explain this in a way that makes sense help
Note that the graphing form and vertex of each quadratic function are given as follows:
a) for f(x)=x² +6x+15, the graphing form of the quadratic function is f(x) = (x + 3)² + 6. The vertex is (-3, 6).
b) for y= x²-4x+9 the graphing form of the quadratic function is y = (x - 2)² + 5. The vertex is (2, 5).
c) for f(x)= x² +8x, the graphing form of the quadratic function is f(x) = (x + 4)² - 16. The vertex is (-4, -16).
d) for . y=x² - 4x+9, the graphing form of the quadratic function is y = (x - 2)² + 5. The vertex is (2, 5).
a. To complete the square for the quadratic function f(x)=x² +6x+15, we add and subtract the square of half of the coefficient of x, which is (6/2)² = 9:
f(x) = x² + 6x + 15
= (x² + 6x + 9) + 6
= (x + 3)² + 6
Therefore, the graphing form of the quadratic function is f(x) = (x + 3)² + 6. The vertex is (-3, 6).
b. To complete the square for the quadratic function y= x^2-4x+9, we add and subtract the square of half of the coefficient of x, which is (-4/2)² = 4:
y = x^2 - 4x + 9
= (x^2 - 4x + 4) + 5
= (x - 2)² + 5
Therefore, the graphing form of the quadratic function is y = (x - 2)² + 5. The vertex is (2, 5).
c. To complete the square for the quadratic function f(x)= x² +8x, we add and subtract the square of half of the coefficient of x, which is (8/2)² = 16:
f(x) = x² + 8x
= (x² + 8x + 16) - 16
= (x + 4)² - 16
Therefore, the graphing form of the quadratic function is f(x) = (x + 4)² - 16. The vertex is (-4, -16).
d. To complete the square for the quadratic function y=x² - 4x+9, we add and subtract the square of half of the coefficient of x, which is (-4/2)² = 4:
y = x² - 4x + 9
= (x² - 4x + 4) + 5
= (x - 2)² + 5
Therefore, the graphing form of the quadratic function is y = (x - 2)² + 5. The vertex is (2, 5).
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Which is a feature of function g if g(x) = f(x+4) +8
The features of the given function are;
y-intercept at (0,10)
vertical asymptote of x = -4
How to find the feature of a function?A function is a relation in which each possible input value leads to exactly one output value. We say “the output is a function of the input.” The input values make up the domain, and the output values make up the range.
The function is given as;
g(x) = f(x + 4) + 8
The domain of a function is a set of all possible input values while the range of a function is defined as a set of all possible output values.
A vertical asymptote of a graph is a vertical line x = a where the graph tends toward positive or negative infinity as the inputs approach a.
Thus, vertical asymptote is x = -4.
The he feat will be at (0, 10)
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Rachel worked 36 hours last month and earned $7 per hour. She spent $15 of earnings since then. How much money does she have left?
Answer:
(36 × $7) - $15 = $252 - $15 = $237
Which mathematical word describes both 2.25
and 6.75
in the expression 2.25x+6.75x−5.5
?
Answer:
Coefficient, the coefficient is the number before the variable
Step-by-step explanation:
The mathematical word that describes both 2.25 and 6.75 in the expression 2.25x + 6.75x - 5.5 is "coefficients."
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
In this expression,
2.25 and 6.75 are coefficients of the variables x, which means that they multiply the variable x.
The term 5.5 is a constant because it does not contain a variable.
Thus,
The mathematical word that describes both 2.25 and 6.75 in the expression 2.25x + 6.75x - 5.5 is "coefficients."
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if anyone can help id appreciate it.
Answer:
YOU HAVE TO USE THE VECTORS AS WELL MATRIX TO GET THE SOLUTION OF THIS QUESTION
The formula d=b2−4ac is used to calculate the discriminant.
Solve for b.
A) b=±2ac−d−−−−−√
B) b=±d+4ac−−−−−−√
C) b=±d−4ac−−−−−−√
D) b=±4ac−d−−−−−−√
The formula d=b2−4ac when solved for b = ± [tex]\sqrt{d +4ac}[/tex]. Option B
What is subject of formula?Subject of formula is defined as a variable that is being solved for in an equation.
It is the variable that is made to stand out in an equation. It is the variable that is made to stand alone on one end of the equality sign.
From the information given, we have that;
d=b2−4ac
Now, collect the like terms
d + 4ac = b²
Find the square root of both sides, we have that;
b = [tex]\sqrt{d + 4ac}[/tex]
Insert the plus-minus sign to show the interval, we have;
b = ± [tex]\sqrt{d +4ac}[/tex]
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What is the simplified form of the expression the quantity x squared plus 10x plus 21 end quantity divided by 4 times the quantity x plus 7 end quantity?
[tex]\dfrac{x^{2} + 10x + 21}{x + 7} = \dfrac{(x+3)(x+7)}{x + 7} = \bf x + 3[/tex]
___
[tex]x^{2} + 10x + 21 = x^{2} + 3x + 7x + 21 = x(x+3)+7(x+3) = (x+3)(x+7)\\[/tex]
Choose all of the equations that have infinitely many solutions.
A. 3 (x + 4) = 2x - 7
B. 3x+8-x=3+5+2x
c. (4x − 8) = 2x − 4 + 12
D. 5-4x+7= −2 (2x - 6)
E. 4-3x - 8 = 2x + 7 - 5x
Equations that have infinitely many solutions are:
B. 3x+8-x=3+5+2x
D. 5-4x+7= −2 (2x - 6)
How to find the equations with infinitely many solutions?An equation has infinitely many solutions when you try to solve the equation and you get a variable or a number equal to itself.
A. 3 (x + 4) = 2x - 7
3x + 12 = 2x - 7
3x -2x = -7 -12
x = -19
B. 3x+8-x=3+5+2x
3x -x - 2x =3 + 5 - 8
0 = 0
This equation has infinitely many solutions.
C. (4x − 8) = 2x − 4 + 12
4x − 2x = − 4 + 12 + 8
2x = 16
x = 8
D. 5-4x+7= −2 (2x - 6)
5 - 4x + 7 = −4x + 12
-4x + 4x = 12 - 7 - 5
0 = 0
This equation has infinitely many solutions.
E. 4-3x - 8 = 2x + 7 - 5x
-3x - 2x + 5x = 7 + 8 - 4
0 = 11
Therefore, options B and D has infinitely many solutions.
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