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Alexxx [7]
3 years ago
11

Need help! The product of the polynomials (2ab + b) and (a2 – b2) is 2a3b-2ab3+a2b-b3 . If this product is multiplied by (2a + b

), the result is a polynomial with terms.
Mathematics
1 answer:
ella [17]3 years ago
6 0
The result is polynomial:
=4a^{4}b - 4 a^{2} b^{3} + 2 a ^{3} b - 2ab^{3}  + 2 a ^{3}b^{2} - 2 ab^{4} + a ^{2}  b^{2} -b^{4}
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What is the sales tax for an item that costs $1400 and has a sales tax rate of 75% ?
dexar [7]
What this question is asking, without all the wording, is what is 75% of 1400. You can easily find this by multiplying 1400 by 0.75. This will be your sales tax.

1400*0.75

1050

Sales Tax: $1050

6 0
3 years ago
A researcher wants to know if there is a relationship between the number of shopping centers in a state and the retail sales (in
sesenic [268]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

Num shopping centers (X) :

630

370

616

700

430

558

1200

2976

Sales (Y) :

15.5

7.5

13.9

18.7

8.2

13.2

23.0

87.3

The regression equation obtained using the online regression calculator is :

y = 0.03025X - 4.87014

2.) The slope value, for every unit change in number of shopping centers, the number of sales increases by 0.03025

3.)

The Coefficient of determination (R²) as obtained by the R² value calculator is : 0.9823

4.)

About 98%  of variation in number of sales is explained by the regression line

5.)

Correlation Coefficient = 0.9911

H0 : p ≥ 0.99

H1 : p < 0.99

3 0
2 years ago
These 3 questions pleaseeee!
Sergio039 [100]

Answer:

1. m<T =72 , m<U =54

2. EF= 18 in. , m<F=134'

3. x=4

Step-by-step explanation:

1. <s=<u , there is 180' in a triangle total so 180- <S - <U = <T

180 - 54 - 54 = 72

2. ef = gf

180 - 23 - 23 = 134

3. since bottom 2 angles are = , the 2 sides are also =

see attachment for work

5 0
3 years ago
Divide. Round to the nearest tenth? 2.1/1.488
Keith_Richards [23]
<span>2.1/1.488
</span><span>=<span>1.41129

Rounded to the nearest tenth is, </span></span><span>1.4.

I hope this helped! ;)</span>
4 0
3 years ago
Read 2 more answers
If g(t) = 2(t)-6, find g(10)
ElenaW [278]
All good. Fill in t with 10 and solve for the expression g(t). 10 = t so it fill in

4 0
3 years ago
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