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3 years ago

Which of the following is the best approximation of the volume of a sphere with a 9 cm radius?

1 answer:

5 0

Volume = 4/3 * PI * r^3
Volume = 4/3 * 3.14159 * 9^3
Volume = 4.18879 * 729
Volume = 3,053.62 cubic centimeters

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A company has 8 mechanics and 6 electricians. If an employee is selected at random, what is the probability that they are an ele

Andre45 [30]

Answer:

$Probability = \frac{3}{7}$

Step-by-step explanation:

Given

Electrician = 6

Mechanic = 8

Required

Determine the probability of selecting an electrician

First, we need the total number of employees;

$Total = n(Electrician) + n(Mechanic)$

$Total = 6 + 8$

$Total = 14$

Next, is to determine the required probability using the following formula;

$Probability = \frac{n(Electrician)}{Total}$

$Probability = \frac{6}{14}$

Divide numerator and denominator by 2

$Probability = \frac{3}{7}$

Hence, the probability of selecting an electrician is 3/7

4 0

3 years ago

Bloom works for 7.5 hours a day how much money would he make if he made $15.76 per hour

Andre45 [30]

If bloom works for 7.5 hrs a day and makes 15.76 an hour that would be 118.20 a day, 591 a week, 2,364 a month, and 28, 368 a year.

8 0

2 years ago

PLEASE HELP ASAP FOR 10 POINTS!! ❤️

Paha777 [63]

Answer:

$6a^5$

Step-by-step explanation:

3a²*2a³ = (2*3)(a² *a³)= $6a^{2+3}=6a^5$

7 0

3 years ago

Miguel wants to bike a total of 100 miles over the course of one week in the summer. He logs how much he bikes each day in the t

bagirrra123 [75]

Answer:

Change all of the number into the same form for ease of adding.

16.3 + 14.5 + 18.75 + 12.25 + 22.6 = 84.4

100 - 84.4 = 15.6

Miguel has to ride a total of 15.6 miles on Saturday and Sunday

4 0

3 years ago

Willie changes the quadratic function f(x)=x2?6x+14 to vertex form f(x)=a(x?h)2+k. If Willie does this correctly, what is the va

andrew11 [14]

Answer:

The value of k is 5.

Step-by-step explanation:

Since we know we can convert function's quadratic form to vertex form by completing the square.

f(x)=x2?6x+14

We will add and subtract 9 to our equation in order to complete the square.

$1(x^{2} ?6x+9)-9+14$

Upon completing the square and combining like terms we will get,

$1(x?3)^{2} +5$

Upon comparing Willie's vertex form with our expression we can see that k is 5.

Therefore, the value of k is 5.

8 0

3 years ago