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Pani-rosa [81]
3 years ago
10

A book costs $12.50 plus sales tax. After tax it costs $13.25. What is the sales tax rate?

Mathematics
1 answer:
WINSTONCH [101]3 years ago
6 0

Answer:

The rate of sales tax is 6%.

Step-by-step explanation:

First you must subtract 12.50 from 13.25

This brings you to .75

Then, divide .75/12.50 to get 0.06 which is equivalent to 6 percent.

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Evaluate abc² if a= -3, b= 6, and c= -8​
Andreas93 [3]

Answer:

-1152

Step-by-step explanation:

abc² the expression can be rewritten using the given values for each letter

(-3)*6*(-8)^2 now we find the second power of (-8) by multiplying it with itself

(-8)*(-8) = 64

(-3)*6*64 = -1152

8 0
3 years ago
What is the graph of y=-(x-2)^3-5
natulia [17]
When x=0,
y=-(0-2)^3-5
y=3

When y=0,
(x-2)^3=5
x-2= +/- 5^1/3
x= +/- 5^1/3 +2
x= 3.70997 or x=0.29002

To find the turning point at y, substitute the information that you have found above.

y=-(3.70997-2)^3-5
y=-9.99994

Find the mid-point next as mid-point is also the turning point.

(3.70997+0.29002)÷2=1.999995

Hence, Turning point is (1.999995, 9.99994)

Plot a graph using turning point, y value and the 2-x values.
6 0
4 years ago
The plot shown below describes the relationship between students' scores on the first exam in a class and their corresponding sc
DiKsa [7]

Answer: y=x estimate: 88

Step-by-step explanation:

5 0
3 years ago
Find the area between the two functions
Inga [223]

The area between the two functions is 0

<h3>How to determine the area?</h3>

The functions are given as:

f₁(x)= 1

f₂(x) = |x - 2|

x ∈ [0, 4]

The area between the functions is

A = ∫[f₂(x) - f₁(x) ] dx

The above integral becomes

A = ∫|x - 2| - 1 dx (0 to 4)

When the above is integrated, we have:

A = [(|x - 2|(x - 2))/2 - x] (0 to 4)

Expand the above integral

A = [(|4 - 2|(4 - 2))/2 - 4] - [(|0 - 2|(0 - 2))/2 - 0]

This gives

A = [2 - 4] - [-2- 0]

Evaluate the expression

A = 0

Hence, the area between the two functions is 0

Read more about areas at:

brainly.com/question/14115342

#SPJ1

5 0
2 years ago
A baseball team played 147 regular season games. The ratio of the number of games they won to the number of games they lost was
makvit [3.9K]

Answer:

They won 63 and lost 84.

Step-by-step explanation:

147 in 7 parts

1 part= 21

ratio of 3 parts to 4 parts

3 parts=63

4 parts=84

8 0
4 years ago
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