If y = (x-5)(x+7) then what does x equal?

Mathematics

1 answer:

DochEvi [55]3 years ago

7 0

Answer:

x = 5, x = -7

Step-by-step explanation:

If you mean find the roots, then x = 5 and x = -7

Because roots makes the equation equal to 0 and 5 - 5 = 0 and -7 + 7 = 0

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-22 = 6x + 4<br> Hehehhe I need help agaaaaiiin

UkoKoshka [18]

Hey there!

$Answer:\boxed{x=\frac{-13}{3}}$

$Explanation:$

$-22=6x+4$

Let's start off with flipping the equation.

$6x+4=-22$

Now we need to subtract 4 from both sides of the equation.

$6x+4-4=-22-4\\6x=-26$

Now in our third/last step, we will divide both sides by 6.

$\frac{6x}{6}=\frac{-26}{6}$

$x=\frac{-13}{3}$

$\boxed{x=\frac{-13}{3}}\text{ is the answer.}$

Hope this helps!

$\text{-TestedHyperr}$

3 0

3 years ago

Help please

MissTica

Answer:

243cm^3

Step-by-step explanation:

By Pythagoras' Theorem,

height of the prism ^2 + 5.4^2 = 7.8^2

height of the prism = ±√(7.8^2 -5.4^2) = ±5.6285cm (5s.f.) (rej. - 5.6285 since height > 0cm)

volume of the prism = 1/2 x 5.4 x 5.6285 x 16 = 243cm^3 (3s.f.)

This is a question on mensuration. If you wish to venture further into it/understand this topic better, you may want to follow my Instagram account (learntionary), where I post some of my own notes on certain topics and also some tips that may be useful to you :)

8 0

3 years ago

I need help - Geometry - 15 points + brainlyist - 1 question -

lara [203]

Answer:

$120 = (15 + 22)x + 4 + 5 \\ 120 - 9 = 37x \\ 111 = 37x \\ x = 111 \div 37 = 3 \\$