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gayaneshka [121]
2 years ago
9

Help thanks!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
harkovskaia [24]2 years ago
6 0
The answer is A because that information they gave to you
kifflom [539]2 years ago
3 0

Answer: its given for reasons

Step-by-step explanation: a or given

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20x=9<br> How to solve 20x=9
nikdorinn [45]

Answer:

x= 9/20 = .45

Step-by-step explanation:

20x=9

x= 9/20 = .45

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2 years ago
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i am planning to attend a company-paid conference. My charges will include $412.00 for airfare, $ 378.00 for conference registra
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The estimated expense would be about $1000.00 in which taxzation and inflation is unaccounted for.

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3 years ago
Emilio works for the parks department of West Palm City. He tracked how many emails the
MissTica

Answer:

The answer is 50%.

Step-by-step explanation:

I did the question on IXL, and got it right.

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3 years ago
Jackson will buy the items listed below. He has $422.76 in his checking account. He had a stored-valued card worth $75. He withd
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A

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3 years ago
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
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