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Maslowich
3 years ago
15

SIMPLIFY THIS POLYNOMIAL EXPRESSION: 4 (5X2 + 2) - (-4X2 + 7). + (- 3X2-5)

Mathematics
2 answers:
GarryVolchara [31]3 years ago
8 0

Answer:

21x^2-4

Step-by-step explanation:

lana66690 [7]3 years ago
5 0

Answer:

6x^2-10

Step-by-step explanation:

You add like terms. All the x^2 you add them and you add together the ones that are not multiplied by x. Make sure to distribute the negative.

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Diego needs to put down sod on a yard that measures 30 feet by 45 feet. Company A says it can do the job for $3.90 per roll of s
N76 [4]

Answer:

Company B is the better deal. Diego will save $31.5.

Step-by-step explanation:

First, find the area of the rectangle: 45*30=1350 sq.ft.

Next, find out how much it will cost for Company A: $3.9 for 2 x 5 ft (10 sq.ft)

Divide 1350 by 10 to see how many of their sod rolls will fit into his yard=135.

Multiply $3.9 by 135=526.5$

Do the same with Company B: $150 for 450 sq.ft plus $45 delivery.

Dived 1350 by 450 to see how many rolls= 3

Multiply $150 by 3= $450, then add $45= $495

Subtract Company B's $495 from Company A's $526.5= $31.5 <-how much Diego saved.

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3 years ago
Find an equation for the line below
Alexandra [31]
Y = 6/9x + 1
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8 0
3 years ago
Kelly shows all the ways to make 49 as tens and ones. What ways does she show?
xeze [42]
Kelly can show 49 with 4 ten blocks and 9 one blocks, 49 ones blocks, and she take a one hundred grid block, places 4 tens on 4 columns of the 100 and 9 one blocks  on one row of the 100 grid block.
7 0
3 years ago
Helpppppp!!!!
allsm [11]

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

Answer:

Let's solve!

Step-by-step explanation:

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\____/

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x = 9/8 --or-- 1\frac{1}{8}

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I hope this helps!

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If the volume of a full sphere is 4/3×3.14 R^3 what is the volume of a half sphere, also called a hemisphere?
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3 0
3 years ago
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