3 years ago

7th grade math pls help

Mathematics

1 answer:

leva [86]3 years ago

7 0

Answer:

Step-by-step explanation:

308 divided by 4=77

4 sides

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(ab^2 x -b^4a^3)^2<br><br> What is the answers

Umnica [9.8K]

Answer:

$\left(ab^2x-b^4a^3\right)^2:\quad a^2b^4x^2-2a^4b^6x+a^6b^8$

Step-by-step explanation:

Given the expression

$\left(ab^2\:x\:-b^4a^3\right)^2$

solving the expression

$\left(ab^2\:x\:-b^4a^3\right)^2$

$\mathrm{Apply\:Perfect\:Square\:Formula}:\quad \left(a-b\right)^2=a^2-2ab+b^2$

$a=ab^2x,\:\:b=b^4a^3$

so the expression becomes

$=\left(ab^2x\right)^2-2ab^2xb^4a^3+\left(b^4a^3\right)^2$

$=a^2b^4x^2-2a^4b^6x+a^6b^8$

Thus,

$\left(ab^2x-b^4a^3\right)^2:\quad a^2b^4x^2-2a^4b^6x+a^6b^8$

3 0

3 years ago

There are 450 students at a school. If each classroom holds 30 students , how many classrooms are needed at school?

Sati [7]

Answer:

15 classrooms

Step-by-step explanation:

3 0

3 years ago

A box contains 9 pounds of sand the entire box of sand will be poured in equal amounts into 6 small bags how many bags of sand w

spayn [35]

Answer: 1 1/2

Step-by-step explanation: So you have 9 pounds and you have to distribute it out between 6 bags, so 9 divided by 6 you get 1 1/2 and so 1 1/2 pounds of sand go into each small bag

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3 years ago

What is the result when 9r^3 + 27x^2 + 11x +1 is divided by 3x + 1?

morpeh [17]

Answer:

the answer is 3x^2 + 8x + 1

Step-by-step explanation:

(I used x as the variable due to the invalid difference of variables in your question )

To find the correct answer, I had to use polynomial division.

(9 x 3 + 27 x 2 + 11 x + 1) / (3 x + 1)

= ( 3 x + 1 ) ( 3 x 2 + 8 x + 1 ) / (3 x + 1)

= 3 x 2 + 8 x + 1

6 0

3 years ago

Multiply the fractions and reduce to lowest terms. Use cancellation whenever possible. 5/6 x 1/7 x 3/5

asambeis [7]

Answer:

$\frac{1}{14}$

Step-by-step explanation:

$\frac{5}{6}*\frac{1}{7}*\frac{3}{5}=\frac{5*3}{2*3*7*5} =\frac{1}{14}$

5 0

3 years ago