3 years ago

Which of the following expressions are equivalent to 4x-8?

Mathematics

2 answers:

slamgirl [31]3 years ago

5 0

Answer:

B) & D)

Step-by-step explanation:

elena-14-01-66 [18.8K]3 years ago

3 0

B & D it’s all equal out to the same answer

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Shown is a pentagon, with the size of<br> each angle shown. Work out the largest angle.

algol13

Answer:

I think it would be the bottom left angle, x + 20 = 20x.

Why the others are smaller:

10x (x + 10)

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Step-by-step explanation:

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Natasha_Volkova [10]

Answer:

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3 years ago

Solve x2 − 10x = −13.

aev [14]

Answer:

Step-by-step explanation:

First, let's rearrange the given equation into something more recognizable. If we add 13 to both sides, we now have the polynomial $x^{2}-10x+13$ . We can now use the quadratic formula to solve.

Remember that the quadratic formula is

$\frac{-b+/-\sqrt{b^{2}-4ac } }{2a}$

Substitute the numbers from the equation into the formula.

$\frac{-(-10)+/-\sqrt{(-10)^{2}-4(1)(13) } }{2(1)}$

Simplify:

$\frac{10+/-\sqrt{100-52} }{2}$

$\frac{10+/-\sqrt{48} }{2}$

Here, I'm going to assume that there was a mistype in option B because if we divide out the 2 we end up with $5+/-\sqrt{48}$ .

Hope this helps!

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2 years ago

What is the constant proportionality of this problem

GaryK [48]

You did not include the problem therefore i cannot help you with this but if you could message me the problem i’d be happy too

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