2 years ago

Plz helpp it important

Mathematics

1 answer:

diamong [38]2 years ago

5 0

Answer:

A.27

Step-by-step explanation:

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Hank has an old oil barrel he will use for a garbage can. The oil barrel is 84 centimeters in diameter and 150 centimeters in he

GREYUIT [131]

The answer to this question is going to be letter B

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2 years ago

Simplify: (7x4 – 7x3 + 7x2 + 2x) + (-5x4 + 7x3 + 5x2 – 9)

ikadub [295]

Answer:

Step-by-step explanation:

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2 years ago

Factor 9y2 - 12y + 4.<br><br> (3 y - 2)(3 y + 2)<br> (3 y - 4)( y + 1)<br> (3 y - 2) 2

lozanna [386]

Answer:

(y - 2)²

Step-by-step explanation:

9y² - 12y + 4 ← is a perfect square of the form

(ax - b)² = a²x² - 2abx + b²

Compare like terms with 9y² - 12y + 4, thus

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b² = 4 ⇒ b = 2 and

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Thus

9y² - 12y + 4 = (3y - 2)²

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2 years ago

What is 15 to the third power

Natalka [10]

Answer:

your answer should be 45

Step-by-step explanation:

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2 years ago

Read 2 more answers

Please help!! I’m stuck on this

beks73 [17]

Answer:

B. $x = -4\,\lor \,x = -1$

Step-by-step explanation:

Let $\sqrt{-4-5\cdot x} = x$ , we solve for $x$ by algebraic means.

1) $\sqrt{-4-5\cdot x} = x$ Given

2) $-4-5\cdot x = x^{2}$ Definition of power/Symmetry of equality

3) $x^{2}+5\cdot x + 4 = 0$ Compatibility with addition/Commutative and associative properties/Existence of additive inverse/Modulative property

4) $(x+4)\cdot (x+1) = 0$ $x^{2}+(a+b)\cdot x +a\cdot b = (x + a)\cdot (x+b)$

5) $x = -4\,\lor \,x = -1$ Result

Hence, the correct answer is B.

7 0

2 years ago