MATHEMATICS HIGH SCHOOL

"Among 40 students, 20 liters of juice was served. How much juice did each student get?"

Answers

Answer 1
Answer:

Answer:

How much juice did each student get?"

40/20=2

each student received 2L of juice

Step-by-step explanation:
Answer 2
Answer: Each student got 1/2 a litre or 500 ml sa 20 divided by 40 equals half

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Sally has twice as many dimes as nickels. The total value is $3.50 how many nickels and dimes does she have?

Answers

d=2n
.05n+.1d=3.5
I multiplied the nickels and dimes by these values because that is their actual monetary value 
.05n=3.5-.1d
multiply everything by 20
n=70-2d
d/2=70-2d
.5d+2d=70 
2.5d=70
d=28 
n=14 
so there are 28 dimes and 14 nickels 
checking this answer 
28 dimes = $2.8
14 nickels = .70
2.8+.7=3.5
2n=d
nickel is 0,05 dollars     dime is 0.1 dollars
0.05(n)+0.1(2n)=3.5
0.25n=3.5
n=14
d=2(14)=28
hope u can understand

David recycles 5 cans every week. Which expression shows the total number of cans he recycles in w weeks?A.5w
B.w/5
C.5 + w
D.5 + 5w

Answers

the answer would be option A 
because if you know that David recycles 5 cans a week every week that the week would turn into w and 5 would stay the same so when you put 5 and w (week) together you would get 5w 
(i am not sure if that is right thought i am taking a test with the same question)

p.s. sorry if i confused you i don't really know how to explain it
a because 5 per week so 10 in two weeks etc...so 5 per (w) any number of weeks
hope i help

Is 89 a prime number

Answers

89 is a prime number because it's only factors are 1 and itself
Yes , 89 is a prime number !

A pyramid is placed inside a prism as shown. The pyramid has the same base area, B, as the prism but half the height, h, of the prism. Which expression gives the volume of the pyramid?Its not v=1/3*b*h

a.v=2/3bh
b. v=1/4bh
c.v=2bh
d.v=1/6bh

Answers

Answer: D) V= 1/6 bh

Step-by-step explanation:

Since according to the given question,  A pyramid is placed inside a prism.

And, The pyramid has the same base area, b, as the prism but half the height, h, of the prism.

Therefore, base area of the pyramid = b

Height of the pyramid = h/2

Since, The volume of the pyramid,

V = 1/3 × base ares × height

V= 1/3 × b × h/2

V= 1/6 bh

Thus the required volume = 1/6 bh cube unit.

Therefore Option D is correct.

Answer:

V = 1/6 BH

Im also taking this class on edmentum

Step-by-step explanation:

the volume of a pyramid is 1/3 BH , since the pyramid is only half the height of the prism you'll have to multiply 1/3 x 2 = 1/6

Simplify 8y(y - 4) + 3y(y + 2). the choices are below 24y 2 - 26y

11y 2 - 26y - 8

11y 2 - 26y

11y 2 - 8

Answers

8y(y - 4) + 3y(y + 2) =

8y^2 - 32y + 3y^2 + 6y =

11y^2 - 26y

Answer:           11y^2 - 26y

                                               

(a)
127.5
is what percent of
51
?

Answers

To solve this, you need to divide 127.5 by 51:
127.5/51 = 2.5
To find the percent, multiply 2.5 by 100:
2.5 x 100% = 250%
So 127.5 is 250% of 51
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Can someone help me?