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Nataly [62]
4 years ago
9

When Carrie mows a lawn, she charges a flat fee of $5 plus an hourly rate, r. Carrie worked 2 hours at her last job. The equatio

n 2r+5=20 represents, in dollars, what Carrie charged. What is Carrie’s hourly rate?
Mathematics
1 answer:
Dmitrij [34]4 years ago
3 0

Answer:

$7.50

Step-by-step explanation:

You use inverse operations to evaluate the equation. You subtract 5 from 20, which is 15. Then you divide 15 by 2, which is 7.5.

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What is the discriminant of the quadratic equation
kkurt [141]
The discriminant is  b^2 -4ac
a = 1
b = -2
c = 4

discriminant = 4 -4 * 1 * 4 =
4  -16 =
 -12
I get MINUS 12 as the answer but that isn't one of the choices.





7 0
3 years ago
Solve each of the following inequalities for x. a. 3+x>8
Leni [432]

Answer:

x > 5

Step-by-step explanation:

3+x>8

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3-3+x>8-3

x > 5

6 0
4 years ago
The Mega Millions lottery is available in multiple states including New Jersey. A Mega Millions ticket consists of 5 different n
shutvik [7]

Using the combinations formula, the probability that you'll win the jackpot is given by:

A. 1/302575350.

<h3>What is the combination formula?</h3>

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by:

C_{n,x} = \frac{n!}{x!(n-x)!}

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C_{70,5}C_{25,1} = \frac{70!}{5!65!} \times \frac{25!}{1!24!} = 302575350

Only one combination is correct, hence the probability of winning is given by:

A. 1/302575350.

More can be learned about the combination formula at brainly.com/question/25821700

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6 0
2 years ago
The surface area of a cylinder is 140 pie square feet, and its height is 9 feet. find its radius
cricket20 [7]

Answer:

the radius is 2.02

Step-by-step explanation:

use the formula to solve the radius of a cylinder

8 0
2 years ago
You walk around a circle which has a diameter of 9 m, how far have you walked?
Snezhnost [94]

Answer:

C =28.26m

Step-by-step explanation:

We are walking around a circle, which means we are finding the perimeter.  The perimeter of a circle is called the circumference.

We find the circumference by

C = pi *d  where d is the diameter

C = 3.14 * 9

C =28.26m

6 0
3 years ago
Read 2 more answers
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