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3 years ago

Solve for x. * 3(x + 4)^2=75

Mathematics

1 answer:

Anika [276]3 years ago

7 0

Answer:x=1,-9

Step-by-step explanation:

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Solve y=x²+7 for x for apexvs homeschool 2019

Molodets [167]

Hello!

To solve for x means to isolate x:

y = x^2 + 7

y - 7 = x^2

sqrt(y - 7) = x

Answer:

x = sqrt(y - 7)

Hope this helps if it did please make brainliest!

7 0

4 years ago

How do i figure out these problems ?

Andreyy89

Given two vectors

$v=(a,b),\quad w=(c,d)$

they are parallel if they are a multiple of each other:

$c=ka,\quad d=kb$

You can easily test this by checking if

$\dfrac{c}{a}=\dfrac{d}{b}$

they are orthogonal if their dot product is null:

$v\cdot w=ac+bd=0$

For example, in the first case, we have

$\dfrac{10}{3}\div 2 \neq \dfrac{4}{3}\div 5$

So, they aren't parallel. Similarly, you have

$2\cdot \dfrac{10}{3}+5\cdot \dfrac{4}{3}\neq 0$

So, they aren't orthogonal.

In the second case, we have

$\dfrac{5}{-12}\neq \dfrac{-6}{-10}$

So, they aren't parallel, and

$5(-12)+(-6)(-10)=-60+60=0$

So, they are orthogonal.

Finally, we have

$\dfrac{2}{-4}=\dfrac{-7}{14}=-\dfrac{1}{2}$

So, they are parallel (and thus can't be orthogonal)

7 0

3 years ago

28 please help I don't understand what it's asking

mixer [17]

Isn't it a function considered a function if it has no intersecting lines? Maybe you should graph it and see if it has intersecting lines or not. If it doesn't the it's a function if
it does then it's not. I think..?

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4 years ago

a researcher is studying the effects of playing chess on memory improvement. he identifies 50 people who play chess and 50 peopl

Sever21 [200]

Answer:

Observational study

Step-by-step explanation:

Just took the test

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3 years ago

in a recent survey of gun control laws, a random sample of 1000 women showed that 65% were in favor of stricter gun control laws

Lubov Fominskaja [6]

Sample of Hillarys Campaign

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3 years ago