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svet-max [94.6K]

2 years ago

12

a scale drawing of an automobile has a scale of 1 inch= 1/2 foot. The actual width of the car is 8 feet. What is the width on th

e scale drawing?

1 answer:

Trava [24]2 years ago

7 0

Answer:

16 inches

Step-by-step explanation:

8 x 2 = 16

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A toy's store percent of markup is 35%.a model train costs 100$.what is the markup

Semenov [28]

Markup =35%
Model train cost =100
So 135%=100
1%=100/135
100%=100/35)*100=74.07
Original cost =74.07

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3 years ago

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Sara had 97 dollars to spend on 6 books. After

nalin [4]

The answer is 19 6×13 It’s 78-97 you get 19

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2 years ago

Please help:<br> In Δ ABC, sin A=88, sin B=42, and a =17, find the length of b.

iren2701 [21]

Answer:

Step-by-step explanation:

Use the law of sines.

$\frac{sin A}{a} = \frac{sin B}{b} \\$

Plug values in.

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Cross multiply.

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Hope that helps.

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3 years ago

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How many liters of 60% alcohol solution should be added to 40 liters of a 20% alcohol solution to make a 50% solution?

kolbaska11 [484]

Answer:

120 liters of 60% alcohol solution is needed

Step-by-step explanation:

Let's assume

x liters of 60% alcohol solution is added

so, we get solution as

$=\frac{60}{100}\times x$

$=0.6x$

we are given

40 liters of a 20% alcohol solution is

$=40\times\frac{20}{100}$

$=40\times\frac{20}{100}$

$=8$

so, total alcohol solution is

$=8+0.6x$

now, we can find total solutions

total solutions is

$=x+40$

now, it is making 50% solution

so, we get

$\frac{8+0.6x}{x+40} =\frac{50}{100}$

now, we can solve for x

$\left(8+0.6x\right)\cdot \:100=\left(x+40\right)\cdot \:50$

$800+60x=50x+2000$

$10x=1200$

$x=120$

So,

120 liters of 60% alcohol solution is needed

4 0

2 years ago

Calculate the new area using a scale factor of 3.

Ludmilka [50]

Answer:

315

Step-by-step explanation:

Using a scale factor of 3 basically means just multiply the length and the width by 3.

So instead of 5 * 7, we are doing 15 * 21.

15 * 21 = 315

8 0

3 years ago