MATHEMATICS HIGH SCHOOL

Adam can shovel a driveway in two hours. Bev can shovel the same driveway in three hours. How long would it take them working together

Answers

Answer 1
Answer:

Answer:

1.2 hours

Step-by-step explanation:

Given the following :

Time taken by Adam to shovel driveway = 2 hours

Time taken by BEV to shovel highway = 3 hours

How long will it take them working together

Hence Adam's rate of shoveling per hour :

Reciprocal of time taken = 1/2 per hour

BEV's rate will also be ;

1/ 3 per hour

If both work together ; that is combining the rate :

1/2 + 1/3 = (3 + 2) = 5/6

Combined rate = 5/6

Total fraction of shoveled area = 1:

Time taken = area / rate

= 1 ÷ (5/6)

= 1 × (6 / 5)

= 6/5

= 1 1/5 hours = 1.2 hours

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What does Fern do that proves she can hear the animals talk? A.
She reacts to what the animals say.

B.
She makes comments to the animals.

C.
She asks the animals questions.

D.
She tells Lurvy about the animals talking.

Answers

A is the answer about what she tellls lurby

Susan can read 72 words in One-third of a minute. Which statement is correct? She can read 24 words per minute, because 72 divided by One-third is equal to 24. She can read 24 words per minute, because 72 times One-third is equal to 24. She can read 216 words per minute, because 72 divided by One-third is equal to 216. She can read 216 words per minute, because 72 times One-third is equal to 216.

Answers

Answer:

The answer is

"She can read 216 words per minute because 72 divided by One-third is equal to 216."

Step-by-step explanation:

Given the statement

Susan can read 72 words in One-third of a minute ....pause

Whats is one-third of a minute

it is expressed as 1/3*60=20sec

so Susan can read 72 words in 20 second

this means that in a minute she can read

72+72+72 words= 216 word since 20sec*3 is 1 minute

alternatively

=(72)/((1)/(3) )

we then multiply 73 with the inverse of the denominator

=72*(3)/(1)

=216 words

Answer:

is c then

Step-by-step explanation:

Find the volume of a sphere that is circumscribed about a cube with a volume of 216 cubic inches

Answers

 Volume Cube = Side^3 
Volume Sphere = 4/3 x PI x radius^3 
since radius sphere = 1/2 side cube 

V cube = 216 = Side^3 
Side cube = 6 inch 
Volume sphere = 4/3 x 3.1416 x (3)^3 
Volume sphere = 113.10 cubic inches

Im trying to figure out how to do this 3t-7=5t,then 6t=  i want to know how they get the answer -21

Answers

3t-7=5t
-7=2t |•3
-21=6t
3t-7=5t
3t-5t=7
-2t=7 |·(-1)
2t=-7 |:2
t=-3,5

t=-3,5 |·6
6t=-21

3It takes 47 yd of fabric to make a costume for a school play. How much fabric would be needed for 10 costumes?

Answers

47 per costume X 10 costumes
47x10
470

3 to the 7th power times 3 to the power of negative 4

Answers


{3}^(7) * {3}^( - 4)
Multiplying to exponents is the same as adding their powers which will be equal to
{3}^(3)
Which is equal to
3 × 3 × 3
9 × 3
27
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