3 years ago

Which equation represents the sentence? Four more than a number is half the number.

1 answer:

5 0

A. n+4=n/2

B. cannot be the answer because it is subtracting instead of adding.

C. cannot be the answer because half of the number is supposed to go after the equal sign.

D. cannot be the answer because the half of the number part did not go before adding the number. Also, it's subtracting instead of adding.

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What are factors of 42 that subtract to -8

MrRa [10]

You might have to do the quadratic formula

8 0

3 years ago

solve systems of equation. equation number 1: 9 x squared + 4 y squared equals 144. equation 2: x squared plus y squared equals

grigory [225]

$9x^{2} + 4y^{2} =144$
$x^{2} + y^{2}=24$

$9x^{2} + 4y^{2} =144$
$4x^{2} + 4y^{2}=96$
by the difference
5 $x^{2}$ =48
so x= $\sqrt{\frac{48}{5}}$ or x=- $\sqrt{\frac{48}{5}}$
and $y^{2}$ =24- $\frac{48}{5}$
then y= $\sqrt{\frac{72}{5}}$ or - $\sqrt{\frac{48}{5}}$

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3 years ago

If I have a triangle with a leg of 4 and a leg of 3 what is the length of the hypotenuse

Dmitrij [34]

Answer:

Step-by-step explanation:

To solve for hypotenuse we use the Pythagorean theorem:

$a^2+b^2=c^2$