Sam ordered some books online for $5 each. He paid a total of $4 for shipping. The total cost of the purchase was $89. How many books did he buy?
Part a is the equation and part b is the total
Answers
Answer:
17
Step-by-step explanation:
if you subtract 4 from 89, which is the shipping cost. 89 - 4 = 85. Then divided 85 by 5 because that will show how much he paid for them in total, by how much a singular book is. Telling you how many books he bought. 85/5 = 17.
Answer:
A.) 5b+4=89
B.) 17 books
Step-by-step explanation:
To find A.), we must create a linear equation. Let b be the number of books Sam ordered. We write 5b because each book is 5 dollars. Then we add 4 dollars to the equation to represent the shipping fee. Then we write "equals to 89", because it says that is the total cost. So we get the equation 5b+$4=$89
To find B.), we must solve the equation. Isolate the variable, by subtracting 4 from both sides. We then get 5b=$85. Now we divide by 5 to get only the variable and to get rid of the coefficient. We get b=17. So Sam bought 17 books.
Related Questions
which statement is true and represent the correct form of scientific notation
A. 5.3 x [tex]10^{-2}[/tex] = -0.053
B. 2 x [tex]10^{4}[/tex] < 20,000
C.-74.308 < -0.74 x [tex]10^{3}[/tex]
D. 12,000,000 = 1.2 x [tex]10^{7}[/tex]
Answers
Step-by-step explanation:
let express them in the same form
5.3*1/100=0.053>-0.053 so A is false
2*10^4=2*10000=20,000 is equal to 20,000 so even B is false
-0.74*10^3=-0.74*1000=-740<-74.308 so even C is false
lets see D
1.2*10^7=12*10^6=12*1000000=12,000,000 which is equal to 12,000,000 so D is true
Can someone tell me the answer plz I’ll give you brainlist and points only if you get it right
Answers
19+4=23
hope this helps!
Answer:
Should be E.
Step-by-step explanation:
if u add and if u subtract 4 from both sides u get 1x=19,divide frmo both sides and x=19
Suppose -1 1 PLEASE PLEASE PLEASE PLEASE
Answers
What's the question?
I don't quite understand what you're asking.
a shop is recording the queuing time of its customers and produces the cumulative frequency graph shown below.
a) how many customers queued for more than 20 minutes?
b) Find the median queuing time .
Answers
Answer:
11 customers
11 minutes
Step-by-step explanation:
Answer:
A) 11 Customers
B) 11 Minutes
Step-by-step explanation:
PLEASE HELP ME!!!!!!!!!!
Answers
Answer:
A.)
Step-by-step explanation:
The width of a rectangle is three more than twice its length
Answers
yes it is! great job on coming up with that conclusion!
Answer:you have to add find the side length add 3 and double it and that’s the width. I don’t have measurements so I can’t fully help you.
Step-by-step explanation:
YESS
A line has a slope of 1/4 and passes through the point (0.2. 4/5).
Find the value of b, the y-intercept.
b=
Answers
Answer:
The value of the y-intercept b is 0.75
Step-by-step explanation:
Here, we want to find the value of the y-intercept
The equation of the line can be written as;
y = mx + b
where m is slope and b is the y-intercept
so y = 1/4x + c
To get the value of b , we substitute for x and y using the given point
4/5 = 1/4(0.2) + c
Multiply
0.8 = (0.25)(0.2) + b
0.8 = 0.05 + b
b = 0.8 - 0.05 = 0.75
Answer:
b=0.75
Step-by-step explanation:
i did it on edge
Solution for y = 3x -1
Answers
63.2g of sugar is needed to make 8 cakes how much sugar is needed for 12
Answers
Answer: 94.8
Step-by-step explanation:
To find this, you need half of 63.2 which is 31.6. Then add that to 63.2 and bam, your answer.
Answer:
94.8g of sugar
Step-by-step explanation:
Set up a ratio- [tex]\frac{63.2}{8} =\frac{?}{12}[/tex]
cross multiple- [tex]12*63.2=8*?[/tex]
solve- [tex]758.4 = 8*?[/tex]
divide by 8- [tex]758.4/8 = 94.8[/tex]
A submarine that is 245 feet below sea level descends 83 feet and then ascends 103 feet. What is the location of the submarine compared to sea level?
Answers
The amount of Social Security benefits received by an individual that he or she must include in gross income:
a. May not exceed the portion contributed by the employer.
b. May be zero or as much as 85% of the Social Security benefits received, depending upon the taxpayer's Social Security benefits and other income.
c. May not exceed 50% of the Social Security benefits received.
d. Is computed in the same manner as an annuity [exclusion = (cost/expected return) × amount received].
e. None of these choices are correct.
Answers
Answer:
b. May be zero or as much as 85% of the Social Security benefits received, depending upon the taxpayer's Social Security benefits and other income.
Step-by-step explanation:
Social security measures an organization to guarantee individuals against certain risks (social risks). Social security is made up of a set of institutions whose function is to protect individuals from the consequences of various events or situations, generally referred to as social risks.
Social Security is a public service of the State, ensuring all the social risks of workers, employees, liberal professions, self-employed, and non-salaried workers. Social Security provides the benefits provided by the Social Security Code. However, the amount of Social Security benefits received by an individual that they must include in gross income may be zero or as much as 85% of the Social Security benefits received, depending upon the taxpayer's Social Security benefits and other income.
An item is priced at $13.51. If the sales tax is 7%, what does the item cost including sales tax? please help ♀️♀️
Answers
Answer:
14.45
Step-by-step explanation:
There are two approaches to solving the equation -3x + 10 = 4x - 20
Subtract 4x from both sides. OR Add 3x to both sides.
–7x + 10 = –20 OR 10 = 7x – 20
Solve the equation using both approaches.
What is the solution?
Answers
Solve this system of equation without graphing.
5x + 2y = 29
5x - 2y = 41
Answers
Answer: Solving we get x=7 and y= -3
Step-by-step explanation: We need to solve the following systems of equations:
Let:
Adding eq(1) and eq(2)
So, value of x=7
Putting value of x in eq(1) to find value of y:
So, value of y = -3
So, Solving we get x=7 and y= -3
Keywords: Solving system of Equations
Learn more about Solving system of Equations at:
brainly.com/question/2115716
#learningwithBrainly
HELP PLEASE TO CONFUING FOR ME
Answers
Answer:wow this is hard
Step-by-step explanation:
Use the graph shown to complete the following sentence.
when x = 1, then y = ___
Answers
Answer:
-2
Step-by-step explanation:
On the graph when the X value is equal to 1, the Y value is equal to -2.
I need help PLLS I'll give you the Brainliest
Answers
Answer:
C
Step-by-step explanation:
21 - (-5) A negative minus a negitive turns into a +
21 + 5 = 26
A. -21 + 5 = -16 NO
B. 21 - 5 = 16 NO
C. 21 + 5 = 26 YES
D. -21 - 5 = -26 NO
Answer:
C
Step-by-step explanation:
When subtracting a negative, the two negatives cancel out. The rule is that two like signs become positive.
Therefore, +(+) =+ and -(-) = +
So, the equation would be 21 + 5.
BRAINLIEST!!!!!! easy question
Answers
Answer:
Draw a line that intersects the first line using a straightedge
The first answer
Answer:
second option: Draw a ray that intersects the frist line at a right angle using a straightedge
Step-by-step explanation:
The coordinates for the vertices are A(1,3), B(4,0) ,C(1,-3) ,D(-2,0) what is the length of the AB
Answers
Answer: 3sqrt(2)
Step-by-step explanation:
d = sqrt[(3-0)^2 + (4-1)^2]
d = sqrt[9+9]
d = sqrt(18) = 3sqrt(2)
One night a theater sold 548 movie tickets. An Adult’s ticket costs $6.50 and a child’s ticket cost $3.50. In all $2881 was taken in. How many of each kind of ticket were sold?
Answers
Step-by-step explanation:
let x be the number of adults and y the number of childrens
x+y=548 people because thats the whole number of sold tickets
and
6.50*x+3.50*y=2881 dollars in total
let separate x from the first formula
x=548-y
and replace it at the second equation
6.50*(548-y)+3.50y=2881
6.50*548-6.50y+3.50y=2881
3562-3y=2881
3y=681
y=227
so x=548-y=548-227=321
there were sold 321 adult tickets and 227 child's tickets.
Select the fraction that is equivalent to A. 1 9 B. 1 2 C. 1 22 D. 2 9
Answers
The ratio of juniors to seniors on the track team is 6:7. How many juniors are on the track team if there are 21 seniors on the team?
answer: 18
Answers
Answer:
There are 18 juniors on the track team
Answer:
There are a total of 18 juniors on the track team.
Step-by-step explanation:
Apply the following ratio to the quantity by multiplying.
6:7 = 6 to 7 or 6/7
6/7 × 21 = 126/7 = 18
can someone tell me what's happening here? jk don't just help me answer this plzzzzz
7x+4-2x=6(x+1)-x
Answers
Answer:
the sides are not equalStep-by-step explanation:
7x + 4 - 2x = 6(x + 1) - x expand
7x + 4 - 2x = 6x + 6 - x combine similar terms
7x - 6x - 2x + x = 6 - 4
0 = 2 ------ no solution
5-y=-3x in standard form
Answers
Answer:
y = 3x + 5
Step-by-step explanation:
The linear formula follows this general form: y = mx + c
Hence, to put 5-y=-3x in standard form, you would rearrange it
-y = -3x - 5
y = 3x + 5
Answer:
3x-y=-5
Step-by-step explanation:
standard form is Ax + By = C
5-y=-3x move the y to the other side by adding it to the -3x
-3x+y=5 The x cant be negative so switch all the signs
3x-y=-5
Hannah makes $1,500 per month. She spends $450 on groceries and
eating out. What percentage of her budget is spent on food?
Answers
Explanation
450 divided by 1500 is 0.3
0.3 multiplied by 100 is 30
Answer is 30%
What’s the slope for this chart?
Answers
Answer:
3
Step-by-step explanation:
The slope of the chart, (the change of y over x) is 3
Given the expression 2m - 7x + 6 + 3x - 4 what are the CONSTANTS?
Answers
Answer:
The constants are 6 and 4
Step-by-step explanation:
They don’t have variables next to them
Construction of segments angles and bisectors
What are the steps for using a compass and straightedge to construct a line through point X that is parallel to line r?
Answers
Answer:
What are the steps for using a compass and straightedge to construct a line through point X that is parallel to line r? Drag the steps and drop them in order from start to finish. Use the straightedge to draw a line s that passes through X and intersects line r. Label the point of intersection as point Y.
Step-by-step explanation:
Answer:
1. Use the straightedge to draw a line s that passes through X and intersects line r. Label the point of intersection as point Y.
2. Place the point of the compass on point Y and draw an arc that intersects lines r and s. Label the intersections as points M and N.
3. Without changing the width of the compass opening, place the point of the compass on point X and draw an arc that intersects line s. Label the intersection as point P.
4. Place the point of the compass on point M and open it to width MN.
5. With the compass opening set to width MN, place the point of the compass on point P and draw an arc that intersects the arc that was drawn from point X. Label the intersection of the arcs as point Z.
6. Use the straightedge to draw XZ.
Step-by-step explanation:
Verified correct with test results!!
Need help ASAP plzzz and thank you :)
Answers
Answer:
C
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
to get the exponent number, you count however many times the number is being multiple by itself
THE FIRST PERSON TO GET IT RIGHT GET BRAINLIEST!!!!!!! Plzzz hurry I need to double check my answers.
Answers
Answer:
0.04 or 1/25
Step-by-step explanation:
If x = -2, then the equation is f(-2) = 5^-2
5^-2 is 0.04 so,
f(-2) = 0.04 or 1/25
I hope this helps :)