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n200080 [17]
3 years ago
6

A construction worker is making concrete by mixing sand, gravel, and cement in water. For each pound of sand, he uses 1 2/3 poun

ds of gravel. For each pound of gravel, he uses 2/5 pound of cement. He is making enough concrete that he needs to use 3 pounds of sand. How many pounds of cement does he use?
A. 1 pound
B. 1 4/15 pounds
C. 2 pounds
D. 2 1/15 pounds
Mathematics
1 answer:
guajiro [1.7K]3 years ago
5 0

Hi There!


Your answer should be B) 1 4/15 pounds


Hope this helps.

Good luck!

PLEASE MARK BRAINLIEST


- WeasuLL


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What is the equation of the line that has a slope of 1 and passes through the point (8,6)?
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Answer:

The equation of this line in point-slope form would be y - 6 = (x - 8)

Step-by-step explanation:

In order to find this, we simply plug into the point-slope form using the known information.

y - y1 = m(x - x1)

y - 6 = 1(x - 8)

y - 6 = x - 8

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3 years ago
What value digit in 2,417 is ten times as value of the digit in 2,147
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Answer:

4 in 2,417

4 in 2,147

Step-by-step explanation:

the place value of 4 in 2,417 is HUNDREDS

while the place value of 4 in 2,147 is TENS

Therefore the place value of 4 in 2,417 is ten times the value of 4 in 2,147

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A photograph has a length that is 2 inches longer than its width, x. So its area is given by the expression x(x + 2) square inch
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5 0
3 years ago
Please awnser quickly
lakkis [162]

Answer:

B': (-8,2)

C':(-8,9)

D':(-5,4)

Step-by-step explanation:

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7 0
2 years ago
Find the product. If the result is negative, enter "-". If the result is positive, enter "+". -7(- a2 ) 2 ( -b3 ).
m_a_m_a [10]

Answer:

The product is positive, thus it is \bold{+7a^4b^3}

Step-by-step explanation:

The full question in proper notation is:

"Find the product. If the result is negative, enter "-". If the result is positive, enter "+".

-7(-a^2)^2(-b^3)"

We have to work with it using Order of operations know as well as PEMDAS, thus expression inside parenthesis go first and exponents.

On this expression we have to work with exponents

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Thus we get

-7(-a^2)^2(-b^3)=-7a^4(-b^3)

Lastly we can work with multiplication and remembering that the multiplication of two negative signs becomes positive.

-7(-a^2)^2(-b^3)=7a^4b^3

So the final simplified expression is \bold{7a^4b^3}

5 0
3 years ago
Read 2 more answers
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