2 years ago

15.7.3 Quiz: Polynomial Identities

Mathematics

1 answer:

elena-s [515]2 years ago

5 0

Answer:

$B) ~a^3 -b^3 = (a-b)(a^2 +ab+b^2)$

Step-by-step explanation:

$(a-b)(a^2 +ab+b^2)\\\\=a^3 +a^2b+ab^2-a^2b-b^2 a -b^3\\\\=a^3- b^3$

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Sadie spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -6.2°

JulijaS [17]

Answer:

-28.7

Step-by-step explanation:

-6.2 + 2.6 = -3.6 - 18.6 = -22.2 - 6.5 = -28.7

Hopefully I did this right, reply if you have any corrections or questions!

8 0

3 years ago

Mashcka [7]

Answer:

$\frac{11}{20}$

Step-by-step explanation:

We are told that at the popular restaurant Fire Wok, 55% of guests order the signature dish.

To find the fraction of guests who ordered the signature dish we can write 55% as 55 divided by 100.

$\text{Fraction of guests ordered the signature dish}=\frac{55}{100}$

Upon simplifying our fraction we will get,

$\text{Fraction of guests ordered the signature dish}=\frac{11}{20}$

Therefore, $\frac{11}{20}$ of the guests at the restaurant Fire Wok ordered the signature dish.

4 0

4 years ago

Simplify : 7x^2 + 6x + 9x^2 - 5x

anastassius [24]

Answer:

131x

Step-by-step explanation:

7x² + 6x + 9x² - 5x

49x + 6x + 81x - 5x

136x - 5x

131x

7 0

3 years ago

The value of 2 x + 2 y , for x = 7 and y = 3, is 50.TrueFalse

denis-greek [22]

The answer is False as they add up to 20 only
hope it helped ;)

4 0

3 years ago

Read 2 more answers

What is 5/8 dived by 1/4

suter [353]

Answer:

2 1/2

Step-by-step explanation:

5/8 ÷ 1/4

Copy dot flip

5/8 * 4/1

Rewrite

5/1 * 4/8

5/1 * 1/2

5/2

Change to a mixed number

2 1/2

8 0

3 years ago