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kow [346]
3 years ago
5

Find the missing side length to the nearest tenth of a millimeter.

Mathematics
1 answer:
Zarrin [17]3 years ago
5 0

Answer:

A = 4.7

Step-by-step explanation:

To find the missing leg, use this formula:

a = \sqrt{c^2 - b^2}

----------------------------------------------------------------------------------------------------------------

Have a good day :)

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the ratio of sallys height is 7:8. if the sum of their heights is 90 inches. how tall are sally and jack?
pickupchik [31]

Answer:

Sally is 42 in. tall, and Jack is 48 in. tall.

Step-by-step explanation:

There are some words missing in the problem.

Perhaps the problem was meant to read:

"The ratio of Sally's height to Jack's height is 7:8. If the sum of their heights is 90 inches, how tall are Sally and Jack?"

Solution:

The ratio of the heights is 7:8.

Sally could measure 7 inches and Jack 8 inches, but then when you add the heights, 7 in. + 8 in. = 15 in. which is not 90 inches.

If you multiply both numbers in a ratio by the same number, the new numbers are still in the same ratio.

Multiply 7 and 8 by 2. You get 14 and 16. Maybe Sally is 14 in. tall and Jack is 16 in. tall. Add the heights, 14 in. + 16 in. = 30 in. This is also not 90 in.

We can keep on guessing what number to multiply by 7 and 8 by so their sum is 90, but we can use algebra to write an equation and not have to go through many guesses.

There is a number, x, that when you multiply 7 and 8 by x, the sum of the products is 90. We don't know what x is, but we can write an equation and solve for x.

The numbers in the ratio are 7x and 8x.

7x and 8x are still in the ratio 7:8.

Now we add the numbers 7x and 8x and set the sum equal to 90. Then we solve for x.

7x + 8x = 90

15x = 90

x = 6

We get x = 6. Now we know we need to multiply both 7 and 8 by 6 to get the heights we need.

7 in. * 6 = 42 in.

8 in. * 6 = 48 in.

Check: 42 in. + 48 in. = 90 in.

Answer: Sally is 42 in. tall, and Jack is 48 in. tall.

7 0
2 years ago
The temperature on the ground during a plane's takeoff was 4*F. At 38,000 feet in the air, the temperature outside the plane was
Finger [1]

Answer:

-22*F

Step-by-step explanation:

The answer is -22*F because you are subtracting -7*F from -29*F.

7 0
2 years ago
Read 2 more answers
A company produces and sells homemade candles and accessories. Their customers commonly order a large candle and a matching cand
Novay_Z [31]
Yes this is true thank you for this
6 0
3 years ago
Read 2 more answers
600,000 gallons of water pass through a given point along a river every minute. Which equation represents the amount of water, y
11111nata11111 [884]

Answer:

y=600,000  x=1

Step-by-step explanation:

y is equal to 600,000 which means that every minute (x) 600,000 gallons of water would pass that point in the river

8 0
3 years ago
Read 2 more answers
PLEASE HELP!!<br> What was the average number of locations chosen per potential customer?
MatroZZZ [7]

Answer: D.2

Step-by-step explanation:

First,

Add all the number together.

32+24+16+8

=80

Next,

80 divided by amount of customers.

80 / 40 = 2


Therefore the average is 2.

3 0
1 year ago
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