3 years ago

My child has algebra homework

Mathematics

1 answer:

Pachacha [2.7K]3 years ago

3 0

Answer:

I believe the answers 216

Step-by-step explanation:

6|2|(9+9)

6|2|(18)

12*18

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-8(2b-7)-9(b-5)<br>simplify

GenaCL600 [577]

Answer:

Step-by-step explanation:

$-8(2b-7)-9(b-5)\qquad\text{use the distributive property:}\ a(b+c)=ab+ac\\\\=(-8)(2b)+(-8)(-7)+(-9)(b)+(-9)(-5)\\\\=-16b+56-9b+45\qquad\text{combine like terms}\\\\=(-16b-9b)+(56+45)\\\\=-25b+101$

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3 years ago

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What is the vertex of the parabola whose equation is y = (x + 1)2 + 3?

Ilya [14]

Answer:

The answer would be -1,-3.

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4 years ago

In triangle LMN, LM = 6, MN = 9, and LN = 7. Find m∠M to the nearest tenth of a degree.

kozerog [31]

7^2 = 6^2 + 9^2 - 2(6)(9)cos(m)
-68 = 2(6)(9)cos(m)
cos(m) = -0.6296
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m = 129.0 degrees

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3 years ago

For a standard normal distribution find the approximate value of p(z<0.42)

Kruka [31]

Answer:

p(z<0.42) = 0.6628

Step-by-step explanation:

A normal distribution with a mean of 0 and a standard deviation of 1 is called a standard normal distribution. That is to say:

μ = 0

σ² = 1

Using a calculator, we find that:

p(z<0.42) = 0.6628 (See picture attached)

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4 years ago

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An 8-person committee is to be formed from a group of 15 women and 12 men.

mariarad [96]

Answer:

1860 WAYS

Step-by-step explanation:

Combination is the technique used to compute the selection of items based on given criteria.

ⁿₐC = n!/(n - a)! a!

The number of ways an 8-person committee of 4 men and 4 women is to be formed from a group of 15 women and 12 men

= 15 ₄C + 12₄C

= 15!/(15 - 4)!4! + 12!/(12 - 4)!4!

= 1365 + 495

= 1860 WAYS

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3 years ago