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Ne4ueva [31]
3 years ago
13

I need help i dont understan

Mathematics
2 answers:
Serhud [2]3 years ago
5 0
Use a protractor to measure the angles!
Afina-wow [57]3 years ago
4 0

Answer:

you would have to use a protracter to mesure the angles

Step-by-step explanation:

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The ratio of boys to girls in Ms. Ralph's class is 2 to 3. There are 18 girls in the class. What is the total number of students
Mars2501 [29]

Answer:

30

Step-by-step explanation:

5 0
3 years ago
Solve for x.<br> 2x2 – 40x + 200 = 0
Eduardwww [97]

Answer:

5.1

Step-by-step explanation:

you subtract 200 from 0 which =-200 then you can multiply 2 and 2 which =4 so then it's 4 -40x=-200 then u add -4 and -204 which is -204 so then the equation is -40x=-204 then u divide -204 by -40 to get 5.1 so x = 5.1. not sure if I did this right but whatevs

5 0
4 years ago
Read 2 more answers
Acar traveled 50 miles in 40 minutes. Assume that the car will continue at this constant
zalisa [80]

Answer:

Would 50 divided by 40 work?

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Phil can paint the garage in 12 hours and Rick can o it in 10 hours. If they work together for 3 hours and then Phil leaves, how
daser333 [38]

Answer:

It will take 4.5 hours for rick to complete the job.

Step-by-step explanation:

Given:

Time taken by Phil to paint the garage = 12 hours.

It means that for each hour he does =  \frac{1}{12}of the job.

.

Time taken by Rick to paint the garage = 10 hours.

It means that for each hour he does = \frac{1}{10} of the job

.

If they work together for 3 hours,

Phil does job in 3 hrs =  3\times\frac{1}{12} = \frac{1}{4}=0.25

Rick does job in 3 hrs =  3\times\frac{1}{10} = \frac{3}{10}=0.3

.

So in three hours of working together job done = 0.3+0.25 = 0.55

.

This means job of the painting entire garage have been done 0.55 of it.

1 - 0.55 = 0.45.

So  there is 0.45 job left

At this point Phil quits and Rick presses on by himself. Since he does 1/10 of the garage every hour

Let T represents the time that Rick needs to complete the job after Phil leaves.

Hence, \frac{1}{10}\times T= 0.45\\\\T = 0.45 \times 10\\T =4.5 hrs

Hence it will take rick 4.5 hours to complete the remaining job.

5 0
3 years ago
Please answer the question and provide a solid definition of what an expression is, thank you :)
xz_007 [3.2K]

Answer:

Answers are: 2x - 7, and 2x -7 = 14

Step-by-step explanation:

An expression must have variables must have a coefficient, a number that is multiplied divided added or subtracted by our variable. The variable is a place holder.

So our answers would be 2x - 7, and 2x -7 = 14

5 0
3 years ago
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