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3 years ago

What number must be added to -9 to equal +4?

Mathematics

1 answer:

Vlad1618 [11]3 years ago

8 0

Answer:

$13$

Step-by-step explanation:

let the unknown number be x

 $x + ( - 9) = 4 \\ x - 9 = 4 \\ x = 4 + 9 \\ x = 13$ 

hope this helps you.

Can I have the brainliest please?

Have a nice day! 

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Does anyone know the answer?

motikmotik

Answer:

We conclude that the area of the right triangle is:

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Hence, option A is correct.

Step-by-step explanation:

From the given right-angled triangle,

Base = p+1

Perpendicular = 2p-6

Using the formula to determine the area of the right-angled triangle

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