MATHEMATICS HIGH SCHOOL

Solve this using substitution y=4x-8 and y=2x+10

Answers

Answer 1
Answer: \left\{\begin{array}{ccc}y=4x-8\ny=2x+10\end{array}\right\n\n4x-8=2x+10\n4x-2x=10+8\n2x=18\ \ \ /:2\nx=9\n\ny=4\cdot9-8=36-8=28\n\nAnswer:x=9\ and\ y=28

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Multiply and simplify.
(a - 2b) (2a - b) (a + 2b)

Answers

(a - 2b) (2a - b) (a + 2b)=\n (2a-b)(a^2-4b^2)=\n 2a^3-8ab^2-a^2b+4b^3=\n 2a^3-a^2b-8ab^2+4b^3

An object that starts at rest accelerates until it is moving at 247 km/h. If it takes 1.7 minutes for this change to occur what is the average acceleration in m/s? 20 PTS!

Answers

I figured out the answer Chaseashley24! The answer to your question is:

0.673 m/s²

Hope this helps!

What is the solution of the linear system of equations?


y=2x-3
y=2x+5

Answers

Hi Brainiac


y=2x-3

y= 2x+5


Ok we need to solve y=2x-3 for y

Now substitute 2x-3 for y in y=2x+5

y=2x+5

2x-3=2x+5

Add -2x

2x-3-2x=2x+5-2x

-3=5

Add 3

-3+3=5+3

0=8

No Solutions


I hope that's help:0

What is the simplified value of the exponential expression 16^1/4?

Answers

The simplified value of the exponential expression 16^(1)/(4)is 2.

What does Fractional power mean for an integer?

Fractional power implies the root of the strength of the denominator of that integer.

For example: a^(1)/(n)=\sqrt[n]{a}.

Given here the exponential expression is 16^(1)/(4)

So here a=16,n=4

We know that, 2^4=16

Thus, 16^(1)/(4)=\sqrt[4]{16}=\sqrt[4]{2^4}=2

Hence the equivalent value of the given expression 16^(1)/(4) is 2.

Learn more about Fractional Power here -

brainly.com/question/13689764

#SPJ2

Answer

2

Explanation

First, we are going to use the law of fractional exponents: a^{(1)/(n) =\sqrt[n]{a}

We can infer form our expression that a=16 and n=4, so let's replace the values:

a^{(1)/(n) =\sqrt[n]{a}

16^{(1)/(4) }=\sqrt[4]{16}

Notice that we can also decompose 16 into prime factors to get 16=2^4, so we can rewrite our expression as follows:

\sqrt[4]{16}=\sqrt[4]{2^4}

Finally, we can use the rule of radicals: \sqrt[n]{a^n} =a, so:

\sqrt[4]{2^4}=2

Katie says when n=3 the answer to 4n2=144jack says when n=3 the answer to 4n2=36who is correct and why?

Answers

JACK IS CORRECT.

4n²= 36 when n=3, not 144.

It is because you have to power up first, then you should multiply. But Katie did the opposite, so she was wrong.

Find the x and y intercepts of the line with equation 3y - 6 = 3?

Answers

X - Intercept
  3y - 6x = 3
3(0) - 6x = 3
    0 - 6x = 3
        -6x = 3
         -6    -6
           x = -0.5

Y - Intercept
  3y - 6x = 3
3y - 6(0) = 3
    3y - 0 = 3
         3y = 3
          3     3
           y = 1

X - Intercept and Y - Intercept
(x, y) = (-0.5, 1)
the answer is 3 times y minus six equals to 3 .y=5 so three times five is fifteen so then you take that total and subtract it with six which equals to three . hope this helps you
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