2 years ago

This table shows a linear relationship.

Mathematics

1 answer:

svp [43]2 years ago

5 0

The answer would be y=42x

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What are the roots of the quadratic equation 2x2+7x+4=0? Select all that apply.

skad [1K]

Answer:

option A and B

$x=\frac{-7+\sqrt{17}} {4}$

and

$x=\frac{-7-\sqrt{17}} {4}$

Step-by-step explanation:

we have

$2x^2+7x+4=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^2+7x+4=0$

$a=2\\b=7\\c=4$

substitute in the formula

$x=\frac{-7\pm\sqrt{7^{2}-4(2)(4)}} {2(2)}$

$x=\frac{-7\pm\sqrt{17}} {4}$

$x=\frac{-7+\sqrt{17}} {4}$

and

$x=\frac{-7-\sqrt{17}} {4}$

7 0

3 years ago

10 sqrt 45 <br><br> please show how you did it

bulgar [2K]

$10\sqrt{45}=10\sqrt{9\cdot5}=10\sqrt{3^2\cdot5}=\\\\=10\cdot3\sqrt5=\boxed{30\sqrt5}$

6 0

3 years ago

Why are scientific models important?

SOVA2 [1]

Answer - B = they help visualize things that are very complex, very large and very small

8 0

3 years ago

Pls help will mark as brainliest

harina [27]

The answer is y=1/4^x

If you plug in the x values, such as 2, into the equation you should get the y value. For example 1/4^2 is 1/16 which matches the table

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4 years ago

Read 2 more answers

PLEASE HELP I'LL GIVE BRAINLIEST<br><br> It's both of them.

vladimir2022 [97]

What is your question...?

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4 years ago