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3 years ago

What values of b satisfy 3(2b + 3)2 = 36?

2 answers:

4 0

To find the answer, you need to solve for b.

2(2b + 3) = 12 divide both sides by 3
2b + 3 = 6 divide both sides by 2
2b = 3 subtract 3 from both sides
b = 1.5 divide both sides by 2

b = 1.5 satisfies the equation. if you plug 1.5 in, you get that the equation is true.

zaharov [31]3 years ago

3 0

Answer:

Everyone is simplifying too far. The answer is A. b = (-3 +- 2 square root 3) / 2

Step-by-step explanation:

+-square root 3 - 3/2 is correct but that is not one of the options.

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What if i=radical -1, what is the value of i^3

aleksklad [387]

$\bf i^3\implies \sqrt{-1}\cdot \sqrt{-1}\cdot \sqrt{-1}\implies (\sqrt{-1})^2\sqrt{-1}\implies \sqrt{(-1)^2}\cdot \sqrt{-1} \\\\\\ -1\cdot i\implies \boxed{-i}$

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3 years ago

An electrical power company is looking to expand into a new market. Before they commit to supplying the new area with electricit

TiliK225 [7]

Answer:

atleast 385

Step-by-step explanation:

Given that an electrical power company is looking to expand into a new market. Before they commit to supplying the new area with electricity, they would like know the mean daily power usage for homes there.

Population std deviation = $\sigma = 50$

Sample size = $n$

STd error of sample mean = $\frac{50}{\sqrt{n} }$

Margin of error for 95% would be Critical value ( std error)

Here since population std dev is known we can use Z critical value= 1.96

$1.96*\frac{50}{\sqrt{n} }19.6^2\\n>384.16$

Sample size should be atleast 385

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3 years ago

Based on the line plot, how many recipes call for more than 1/4 tsp of salt?

Studentka2010 [4]

It would be 6 haha I just took a test and got it right

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3 years ago

Read 2 more answers

Select all of the following ordered pairs that are in the solution set of the inequality shown.

Ilya [14]

Answer:

points on the boundary line: (0, 10), (20, 0)

solution points not on the boundary line: (100, 100)

Step-by-step explanation:

We cannot tell from the posted picture whether the boundary line is solid or dashed, so the answer above is split into two parts. If the boundary line is solid (x+2y≥20), all three listed points are in the solution set. If the boundary line is dashed (x+2y>20), only (100, 100) is in the solution set

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2 years ago

What is the difference between the altitude rule and the leg rule?

aivan3 [116]

The leg rule is hypotenuse/leg and the altitude rule is side 1/altitude=altitude/side 2

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2 years ago