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Hatshy [7]
3 years ago
5

A contractor digs a hole for the basements of a new house that is 40 feet long and 10 1/2 feet deep. What is the width of the ho

le if 6,510 cubic feet of dirt are removed?
A.80 feet
B.81 1/4 feet
C.16 Feet
D.15 1/2 feet
Mathematics
1 answer:
Tanzania [10]3 years ago
7 0
40 × 10.5 × w = 6510
420 × w = 6510
w = \frac{6510}{420}
w = 15.5 feet
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zubka84 [21]

Answer:

( x, y) =

65 \ \frac{15}{11}

this is your answer

3 0
2 years ago
There are two numbers, one is 7 more than twice the other. The sum of the numbers is 43. Make the equation to find the smaller n
Mrrafil [7]

Answer:

Smaller number: 12

Greater number: 31

Step-by-step explanation:

Hi there!

Let x equal to the smaller number.

Let y be equal to the greater number.

<u>1) Translate the information into equations</u>

"One is 7 more than twice the other"

⇒ y=2x+7

"The sum of the numbers is 43"

⇒ x+y=43

<u>2) Use substitution to solve for the smaller number</u>

x+y=43

Plug the equation y=2x+7 into the above equation

x+(2x+7)=43\\x+2x+7=43\\3x+7=43

Subtract both sides by 7

3x+7-7=43-7\\3x=36

Divide both sides by 3 to isolate x

\frac{3x}{3} = \frac{36}{3} \\x=12

Therefore, the smaller number equates to 12.

<u>3) Use substitution to solve for the greater number</u>

x+y=43

Plug in x as 12

12+y=43

Subtract both sides by 12 to isolate y

12+y-12=43-12\\y=31

Therefore, the greater number equates to 31.

I hope this helps!

3 0
3 years ago
Kim drives x miles a week. Terry drives two times more than Kim and Jerry drives three times more than Terry. Which expression r
Anastasy [175]
Kim drives = x 
Terry drives = 2x 
Jerry drives = 6x 

Let us go through our answer choices and choose one. 

A is incorrect because we are not being asked to add anything.

B is incorrect because it equals what all of the drivers drive. 

2(x+3)
2*x + 2*3
2x + 6x

C is incorrect because we are not being asked to subtract.

D is correct because Jerry drives 3 times as much as terry.

2x*3
6x

So our final answer is D. 6x



3 0
3 years ago
Read 2 more answers
If 350$ is placed in a savings account that earns 3.5% interest once a year, how much money will be in the account after 10 year
Anestetic [448]
472.50 because big maths
5 0
2 years ago
PLEASE HELP I WILL GIVE 25 POINTS AND BRAINLIEST ANSWER FOR RIGHT ANSWER
steposvetlana [31]
The answer would be $3 becaus of x = $12 and y = $9. $12 - $9 = $3.
4 0
3 years ago
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