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hoa [83]
3 years ago
5

Kim bought 10 used books at the yard sale.How much did she pay? Did you use addiction or multiplication to solve this this probl

em
Mathematics
1 answer:
asambeis [7]3 years ago
4 0

Answer:

this problem doesn't make sense

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A construction company built a scale model of a building. The model was built using a scale of 3 inches = 32 feet. If the buildi
Vlad1618 [11]

Let x represent the height of the model.

We have been given that a construction company built a scale model of a building. The model was built using a scale of 3 inches = 32 feet. We are asked to find the height of the model, if  the building is expected to be 200 feet tall.

We will use proportions to solve our given problem as:

\frac{\text{Model height}}{\text{Actual height}}=\frac{\text{Model length}}{\text{Actual length}}

Upon substituting our given values, we will get:

\frac{x}{200\text{ ft}}=\frac{3\text{ in}}{\text{32 ft}}

\frac{x}{200\text{ ft}}\times 200\text{ ft}=\frac{3\text{ in}}{\text{32 ft}}\times 200\text{ ft}

x=3\text{ in}\times 6.25

x=18.75\text{ in}

Therefore, the model will be 18.75 inches tall.

7 0
3 years ago
The value of (1-w) (1 -w^2), where w is the cube root of a complex number is
NeX [460]

Answer:(1-w) (1-w*2)

=1-w*2-w+w*3

=1-w-w*2+1

=1-1+1

=1

Step-by-step explanation:

at first we should multiply them with each other

then, put the value of w*3 i.e. w*3=1

then, put the value of -w-w*2 i.e. 1

then, the final answer is 1.

3 0
3 years ago
Sydney purchases a new car for $27,500. The value of the car decreases at rate of 15% each year. In approximately will the $1,25
Pani-rosa [81]

Answer:

Time taken n = 19 years (Approx)

Step-by-step explanation:

Given:

Amount of car P = $27,500

Decrease rate r = 15% = 0.15

Final amount A = $1,254

Find:

Time taken n

Computation:

A = P[1-r]ⁿ

1,254 = 27,500[1-0.15]ⁿ

0.0456 = [0.85]ⁿ

Time taken n = 19 years (Approx)

8 0
3 years ago
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Tcecarenko [31]

Answer:

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Step-by-step explanation:

ggggggggggggggggggggggggggggggg

4 0
3 years ago
A simple random sample of size n=40 from a population with mu = 74 and standard deviation= 7. Does the population need to be nor
Maurinko [17]

Answer:

Step-by-step explanation:

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