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1 year ago

6

Help me with this problem

1 answer:

slega [8]1 year ago

4 0

Answer:

$20x^3-14x^2+37x-7$

Explanation: We need to simplify the given expression:

$(4x^2-2x+7)(5x-1)$

Simplification step by step:

$4x^2(5x-1)-2x(5x-1)+7(5x-1)$ $4x^2\times5x-4x^2-2x\times5x+2x+7\times5x-7$ $20x^3-4x^2-10x^2+2x+35x-7=20x^3-14x^2+37x-7$

Therefore this is the simplified expression:

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(I WILL GIVE BRAINLIEST) PLEASE HELP!!

Klio2033 [76]

Answer:

C. I,II,III

Step-by-step explanation:

Absolute value is the distance of a number from 0 on a number line. 6 is 6 units from 0, therefore this option is correct. -6 is 5 units to the left of 0, but it is still 6 units away, therefore this option is correct. 6 is 6 units away from 0, therefore, III is correct. But 0 is 0 units away from 0, therefore this option is incorrect.

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2 years ago

Read 2 more answers

1. x=1/(root3-root2). find rootx-(1/rootx) 2. if x=[root(a+2b)+root(a-2b)]/[root(a+2b)-root(a-2b]. show that bx^2-ax+b=0

timofeeve [1]

1. x = 1/ ( $\sqrt{3} - \sqrt{2)}$ = $\sqrt{3}+ \sqrt{2}$ ;
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3 years ago

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If M(6,9) is the midpoint of the line segment AB, and if A has coordinates (3,5), find the coordinates of B.

ANEK [815]

(9,13) .................

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3 years ago

In a family, each brother has as many sisters as brothers, but each sister has twice as many brothers as she has sisters. How ma

daser333 [38]

Answer:

4 brothers and 3 sisters

Step-by-step explanation:

Let x be the number of brothers and y be the number of sisters in the family.

1. Each brother has x-1 brothers and y sisters. If each brother has as many sisters as brothers, then

$x-1=y.$

2. Each sister has y-1 sisters and x brothers. If each sister has twice as many brothers as she has sisters, then

$2(y-1)=x.$

3. Solve the system of two equations:

$\left\{\begin{array}{l}x-1=y\\ \\2(y-1)=x\end{array}\right.\Rightarrow 2(y-1)-1=y,\\ \\2y-2-1=y,\\ \\2y-y=2+1,\\ \\y=3.$

Then

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3 years ago

Y = -4.r - 2<br>4x - 2y = -8 <br>

MAXImum [283]

Answer:

if it is thren true (???) you gots to be more specific...pls)

Step-by-step explanation:

is this a trues or false satement

6 0

2 years ago