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3 years ago

Can someone tell me the answer and explanation??

Mathematics

1 answer:

Schach [20]3 years ago

6 0

Answer:

$15.21

Step-by-step explanation:

Why it would be D is if find out what the 17% is ($2.21) you would add it on top of the $13 and it gives you $15.21 or D.

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I’m new and i need help!!<br> Please help me of you know the answers.

Molodets [167]

Answer:

2, x, 2x

Step-by-step explanation:

A) 2

They are even numbers, so it is going to be 2.

B) x

It is going to only be x because the exponents are even and odd.

C) 2x

It is going to be 2x because the numbers are even but the exponents are even and odd.

Hope this helps.

5 0

3 years ago

Read 2 more answers

Sphere A has a diameter of 2 and is dilated by a scale factor of 3 to create sphere B. What is the ratio of the volume of sphere

krok68 [10]

Answer:

1:27 (D)

Step-by-step explanation:

Given:

Sphere A has a diameter of 2

Sphere A is dilated to create sphere B

Scale factor = 3

Volume of a sphere = 4/3 πr³

Radius = r = diameter/2 = 2/2

r = 1

Volume of sphere A = 4/3 ×π(1)³

Volume of sphere A = 4/3 × π

Volume of sphere B = 4/3 πR³

Since the diameter was dilated, the diameter of B = diameter of A × scale factor

diameter of B = 2×3 = 6

Radius of B = R = diameter/2 = 3

Volume of sphere B = 4/3 × π(3)³

Volume of sphere B = (4/3)(27)π

Ratio of the volume of sphere A to volume of sphere B

= [4/3 ×π]: [(4/3)(27)π]

= (4π/3)/[(4π/3)×27] = 1/27

= 1:27

7 0

3 years ago

Read 2 more answers

Which of the following could be the equation of a line parallel to the line y =-2/3x-1

kkurt [141]

It would be c, y = 2/3x + 6

5 0

3 years ago

Suppose that a particular candidate for public office is in fact favored by 48%of all registered voters in the district. A polli

Mumz [18]

Answer: 0.1854

Step-by-step explanation:

Given : Suppose that a particular candidate for public office is in fact favored by 48% of all registered voters in the district.

Let $\hat{p}$ be the sample proportion of voters in the district favored a particular candidate for public office .

A polling organization will take a random sample of n=500 voters .

Then, the probability that p will be greater than 0.5, causing the polling organization to incorrectly predict the result of the upcoming election :

$P(\hat{p}>0.5)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}>\dfrac{0.5-0.48}{\sqrt{\dfrac{0.48(0.52)}{500}}})\\\\=P(z>0.8951)\ \ [\because\ z=(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}]\\\\=1-P(z\leq0.8951)\ \ [\because\ P(Z>z)=1-P(Z\leq z)]\\\\ = 1-0.8146=0.1854$

∴ Required probability = 0.1854

7 0

3 years ago

What foreign language is this bro (requires answer for part a and b )

kotegsom [21]

Given

a) x+x+x+x+x+x

b) 30y-12

Find

Equivalent expressions

Explanation

a) x + x + x + x + x + x = 6x

b) 30y-12 = 6(5y-2)

$\begin{gathered} 30y-12 \\ 6\cdot5y-6\cdot2 \end{gathered}$

Final Answer

a) the equivalent expression is 6x .

b) the equivalent expression is

$\begin{gathered} 6\cdot5y-6\cdot2 \\ and \\ 6(5y-2) \end{gathered}$

5 0

2 years ago