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3 years ago

When a number is doubled and then taken away from 10, the result is negative 18, what is the number

Mathematics

1 answer:

geniusboy [140]3 years ago

5 0

Answer:

The number is 14.

Step-by-step explanation:

Assuming that x is the number that we are looking for, then it is first doubled "2x", if it's taken away from 10 we have "10 - 2x" and this is equal to -18. Therefore we have the expression:

10 - 2x = -18

-2x = -18 -10

-2x = -28

x = -28/-2

x = 14

The number is 14.

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4 years ago

Write a number with two decimals places that is bigger than 4 1/5 but smaller then 4.25 (Could u explain so i can actually under

zubka84 [21]

The possible answers are:
4.21
4.22
4.23
4.24

Explanation:
We want a number between 4 1/5 and 4.25. We will convert 4 1/5 to a decimal first:

Divide 1 by 5: 1/5 = 0.2.

This makes 4 1/5 = 4 + 1/5 = 4 + 0.2 = 4.2.

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7 0

3 years ago

Read 2 more answers

An observer (O) is located 900 feet from a building (B). The observer notices a helicopter (H) flying at a 49° angle of elevatio

Firdavs [7]

Answer:

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Step-by-step explanation:

h=900tan49

=1035.33 feet

I hope it helps

6 0

3 years ago

This is to confusing

erastova [34]

Answer:

40%

Step-by-step explanation:

because there is 10 parts and if the 10 multipied by 10 (to find the percent) is 100 then the 4 is 40 (the unshaded part would be 60%)

Have a fantastic day!

7 0

3 years ago

Select the correct answer.

rusak2 [61]

I don't know i just need points sorry

7 0

3 years ago