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3 years ago

15

Will mark you as brainliest. If your good with polynomials.

1 answer:

kobusy [5.1K]3 years ago

4 0

To solve/simplify this all you have to do is group like terms (the x^2's with each other, the x's with each other, and the normal numbers, -8)

14x^2-8+5x-6x^2+2x

group the x^2 (add 14x^2 to -6x^2)

8x^2-8+5x+2x

group the x's together (add 5x and 2x together)

8x^2+7x-8

Your answer will be d) 8x^2+7x-8

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In a swimming class, 2/5 of the participants are girls. there are 24 boys in the class. find the total number of participants in

jeyben [28]

30 because 2/5 are girls so 3/5 are boys and 24/3 +8 so 1/5=8 so 8*5 + 40 kids

Hope this helped

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3 years ago

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Brrunno [24]

Answer:

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Step-by-step explanation:

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2 years ago

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There are 18 cupcakes how many 3/4 size servings can u make

ehidna [41]

You can makeabout 17

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2 years ago

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PLEASE HELP ME.

Nina [5.8K]

Answer:

b.(-2, -1), (3, 4)

Step-by-step explanation:

We are given function as

$f(x)=x^4-3x^3-2x^2+3x-5$

We can verify each intervals

At (-6,-5):

Firstly we will plug x=-6

$f(-6)=(-6)^4-3(-6)^3-2(-6)^2+3(-6)-5=1849$

now, we can plug x=-5

$f(-5)=(-5)^4-3(-5)^3-2(-5)^2+3(-5)-5=930$

since, both are positive values

So, zeros can not lie between them

At (-4,-3):

Firstly we will plug x=-4

$f(-4)=(-4)^4-3(-4)^3-2(-4)^2+3(-4)-5=399$

now, we can plug x=-3

$f(-3)=(-3)^4-3(-3)^3-2(-3)^2+3(-3)-5=130$

since, both are positive values

So, zeros can not lie between them

At (-2,-1):

Firstly we will plug x=-2

$f(-2)=(-2)^4-3(-2)^3-2(-2)^2+3(-2)-5=21$

now, we can plug x=-1

$f(-1)=(-1)^4-3(-1)^3-2(-1)^2+3(-1)-5=-6$

since, one is positive and another is negative

So, zeros will lie between them

At (3,4):

Firstly we will plug x=3

$f(3)=(3)^4-3(3)^3-2(3)^2+3(3)-5=-14$

now, we can plug x=4

$f(4)=(4)^4-3(4)^3-2(4)^2+3(4)-5=39$

since, one is positive and another is negative

So, zeros will lie between them

zeros will be between

(-2, -1), (3, 4)

5 0

2 years ago

Read 2 more answers

To subtract 250-105, Bea needs to regroup tens as ones. There are jelly beans left

KiRa [710]

Answer:

250-105 = 145

Step-by-step explanation:

5 is greater than 0 so you must regroup:

Take 1 from 5, so 5 becomes 4.
Add 10 to 0, so 0 becomes 10.
10 minus 5 is 5
4 minus 0 is 4
2 minus 1 is 1

5 0

3 years ago