MATHEMATICS MIDDLE SCHOOL

Solve 2c+5=c+8
hellppp mee pleasee

Answers

Answer 1
Answer: 2c+5=c+8
-c -c
c+5=8
-5 -5
c=3
Answer 2
Answer: Hello,

Shall we begin?

2c+5 = c + 8
2c - c = 8 - 5
c = 3
 
Answers: c = 3

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A dispenser holds 5652 cm3 of liquid soap and is now full. The radius of the dispenser is 7.5 cm. What is the difference between the height of the soap in the full dispenser and the height when 4239 cm3 of soap remains in the dispenser? Use 3.14 to approximate pi.

Answers

30cm is the difference between the height of the soap in the full dispenser and height of the remaining soap. 

The formula for cylindrical height is: 

  Area
  --------     -  r
2 * π * r

Cylindrical height of full dispenser.

      5652                            5652
---------------------   - 7.5    =  ------------  - 7.5  =  120 - 7.5 = 112.50
2 * 3.14 * 7.5                     47.1

Cylindrical height of dispenser with lesser liquid soap 
     
     4239                       4239
--------------------  - 7.5 =  ------------  - 7.5 = 90 - 7.5 = 82.50
2 * 3.14 * 7.5                47.1


Cylindrical height of full soap                112.50
Cylindrical height of lesser soap           - 82.50 
Difference in height of soap content       30.00 

Plz help i beg i will give 20 points and give brainlist ALEX tried to find the value of x. FIND HIS ERROR AND CORRECT IT.

Answers

it’s a 90 degree angle. So the equation so be 28+2x =90 and find x from there.


28+2x=90
-28 -28
2x= 62
x=31
His error was he put 180 rather than 90 because it’s and acute angle so the number you minus by would be 90 done and then you finish the equation like he did

Can someone please help me!!

Answers

Answer: B

If you would like further explanation let me know. :)
The answer would be B.

Please help in Math!? What value of y makes the equation true? A.
–28

B.
–21

C.
21

D.
28

Answers

(-7)/(12) = (y)/(-36)

First, simplify (y)/(-36) to - (y)/(36) / Your problem should look like: - (7)/(12) = -(y)/(36)
Second, multiply both sides by 36. / Your problem should look like: -21=-y
Third, multiply both sides by -1. / Your problem should look like: 21 = y
Fourth, switch your sides. / Your problem should look like: y = 21

Answer: C) 21

A bicycle wheel travels about 82 inches in 1 full rotation. What is the diameter of the wheel, to the nearest inch?(use 3.14 for pi)

Answers

d-diameter\ of\ the\ wheel\n\nd\pi=82\ in\n\n\pi\approx3.14\ then:\n\n3.14d\approx82\ in\ \ \ /:3.14\n\nd\approx(82)/(3.14)\ in\n\nd\approx26.11\ in\n\nd\approx26\ in\leftarrow answer

Caley has a bag that contains 9 blue marbles and 13 yellow marbles. She selects a marble at random, and then, without replacing the first one, selects another marble at random. What is the probability that Caley selects a blue marble and then a yellow marble? Round your answer to the nearest percent. P(blue and yellow) ≈ %

Answers

The answer would be 24%.

You need to multiply the probabilities of each of those circumstances occurring separately (9/22 for choosing a blue one and 13/22 for choosing a yellow one) in  order to find the probability of them happening in a row.

9/22 * 13/22 * 100% ~ 24%
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