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3 years ago

Number 7 please help.

Mathematics

2 answers:

Korolek [52]3 years ago

8 0

C is the correct answer. hopes this helps

inysia [295]3 years ago

6 0

The answer is C. I took 4.5% of $70.00 and added it back to the $70.00 then repeated 2 more times.

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Simplify the following expression -12[ 3y - 4x] - 10y

svp [43]

Answer:

-46y+48x

Step-by-step explanation:

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4 years ago

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Solve the equation below for x. 100 = 25e3 In4 O A. 4 B. 3 e O C. X=In4 - 3 c In100 3. In25 O D.

Ray Of Light [21]

Dividing the given equation by 25 we get:

$\begin{gathered} \frac{100}{25}=\frac{25e^{3x}}{25}, \\ 4=e^{3x}\text{.} \end{gathered}$

Applying the natural logarithm to the above equation we get:

$\ln (4)=\ln (e^{3x})=3x\ln (e)=3x\text{.}$

Finally, solving for x we get:

$x=\frac{\ln (4)}{3}\text{.}$

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1 year ago

He percent distribution of the number of grandchildren for a sample of 1904 grandparents is shown in the pie chart. find each pr

jekas [21]

down voteaccepted

P(X=1) = 0.09

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P(X >= 2) = .36 + .23 + .09 + .23

P(2 <= X <= 7) = .36 + .23

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3 years ago

The volume of a sphere is 256/3π cm3.

slava [35]

the surface area of the sphere is π/4 cm^3

<h3>How to determine the surface area</h3>

It is important to know the formula for surface area and volume of a sphere

Surface area = $\frac{4\pi }{r^2}$

Volume = $\frac{4}{3} \pi r^3$

First, let's determine the value of radius, r

The value for volume was given as 256/3π cm3.

$\frac{256}{3} \pi = \frac{4}{3} \pi r^3$

Pi cancels out and we have cross multiply to get the radius

$256 * 3 = 4 * 3 r^3$

$12r^3 = 768$

Make r the subject of the formula

$r = \sqrt[3]{\frac{768}{12} }$

$r = \sqrt[3]{64}$

r = 4

Let's substitute to find the surface area

Surface area = $\frac{4\pi }{4^2}$

Surface area = π/4

Surface area = π/4 cm^3

Thus, the surface area of the sphere is π/4 cm^3

Learn more about a sphere here:

brainly.com/question/10171109

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2 years ago

Which reason justifies the statement that KLC is complementary to KJC?

leva [86]

<span>Well the third and last option are not rational, since all angles are not right angles, and just because they are comp does not mean they are congruent.</span>

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4 years ago

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