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3 years ago

Jessica makes $9.00 an hour babysitting her sister. If Jessica made $38.25 how many hours did she babysit?

Mathematics

1 answer:

lozanna [386]3 years ago

4 0

Answer

4.25

Step-by-step explanation:

She would have baby sat for 4 hours and 15 minutes.

the 15 minutes comes in when we have the .25 because 1/4 of an hour is 15 minutes.

we can check this if we do 38.25 divided by 4.25 and we get 9.

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9ax+9b-6=21 <br><br> based on the equation above what is the value of ax+b

klemol [59]

We have $9ax+9b-6=21$ .

We add 6 to both sides. $9ax+9b=27$ .

Now, to solve for $ax+b$ , we factor out and divide by a 9 to get

$9(ax+b)=27 \\ ax+b=3$ .

6 0

3 years ago

Write a formula that will compute the final grade for the course, using G to represent the final grade, H to represent the homew

Tasya [4]

Answer:

To calculate final grade we use the formula:

Final grade = H( the weight of h) + Q( the weight of q) + P (the weight of project) +T (the weight of test) + F(the weight of final exams).

This formula help us to calculate the grade we need to get.

Step-by-step explanation:

Solution:

Suppose grade breakdown for certain college course is as follow:

Homework = 15%

Quizzes = 20%

Project = 10%

Test = 40%

Final exam= 15%

Let G represent the final grade

H represents homework average,

Q represents quizzes and P represent project, T represent test average and F represent final exam.

To calculate final grade we use the formula:

Final grade = H( the weight of h) + Q( the weight of q) + P (the weight of project) +T (the weight of test) + F(the weight of final exams).

This formula help us to calculate the grade we need to get.

8 0

4 years ago

If each point in the diagram can act as an endpoint, how many distinct line segments can be formed using the set of points

sdas [7]

Answer:

Option D 6 is the answer.

Step-by-step explanation:

the given points are A, D, C and B. If each point in the diagram can act as end points, we have to calculate number of distinct line segments formed.

This ca be calculated in two ways.

(1) We will form the line segments

AB, AC, AD, BC, BD, DC

Therefore 6 segments can be formed.

(2) By combination method

Number of segments = $^{4}C_{2}$

= $\frac{4!}{2!2!}=\frac{4\times 3\times 2\times 1}{(2\times 1)\times (2\times 1)}$

= $\frac{4\times 3}{2\times 3}=\frac{12}{2}$

= 6

Option D 6 is the answer.

8 0

3 years ago

Read 2 more answers

What is the algebraic expression for the difference between nine times a number and four more than six times the number?

Mazyrski [523]

Answer:

9n-(6n+4)

Step-by-step explanation:

n is number

7 0

4 years ago

On a number line suppose point E has a coordinate of -2 and EG =10 what are the possible coordinates of point G ?

galina1969 [7]

| E - G | = EG

| -2 - G | = 10

-2 - G = 10 -2 - G = -10

- G = 12 - G = -8

G = -12 G = 8

Answer: -12 or 8

3 0

3 years ago