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igomit [66]
3 years ago
11

Calvin is mixing colored gravel for the bottom of his fish tank. He mixes 12 pounds of blue gravel with 3 pounds of purple grave

l.
How much blue gravel is used per pound of purple gravel?

A.3 pounds
B.4 pounds
c.9 pounds
D.15 pounds
Mathematics
1 answer:
Mnenie [13.5K]3 years ago
5 0

Answer:

B.4

Step-by-step explanation:

I did 12 divided by 3 = 4

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How do you solve these?​
Vinil7 [7]
For the first one, the answer is -1 1/5

for the second one, the answer is 2.75


for the third one and fourth one,
To divide fractions take the reciprocal (invert the fraction) of the divisor and multiply the dividend. This is the quickest technique for dividing fractions. The top and bottom are being multiplied by the same number and, since that number is the reciprocal of the bottom part, the bottom becomes one
6 0
3 years ago
The sum of Eric’s and Bob’s weights is 9 times the difference of their weights. The positive difference of their weights is also
Pie

Answer:

<u>150</u>

Step-by-step explanation:

So I will shorten Eric, and Bob's names as E, and B.

So the equations are this

B-E = B+E - 240, E as Eric, and B as Bob, and this E+B=9(E-B)

Move the variables and you get

-2E =- 240

Just divide them both by -2

and E=120

So when we know the value of E we can just plug it into the 1st question

120+B=9B+1080

Moves the Variables and numbers to the other side

8B=1200

1200/8= 150

B=150

There is Bob's weight

6 0
2 years ago
The solution to −4x ≤ 16 is x ≤−4 true or false
Ivenika [448]

Answer:

true

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Solve for x 6 ( x − 2 ) = 8 ( x − 9 )
valentinak56 [21]

Answer:

x = 30

Step-by-step explanation:

in order to solve for the value of x in the expression 6 ( x − 2 ) = 8 ( x − 9 )

we will first of all open the brackets and then evaluate for the value of x by combining the like terms.

from 6 ( x − 2 ) = 8 ( x − 9 )

6x -12 = 8x -72

combine the like terms

6x - 12 + 72 = 8x

-12 + 72 = 8x -6x

60 = 2x

divide both sides by the coefficient of x which is 2

60/2 = 2x/2

30 = x

x = 30

therefore the value of x in the expression 6 ( x − 2 ) = 8 ( x − 9 ) is equals to 30

4 0
3 years ago
Read 2 more answers
If Joey had 5,000,000 dollars and spent 28% of the money, how much will he have left?
Mrac [35]

Answer:

3600000

Step-by-step explanation:

5000000*.28 = 1400000

5000000-1400000 = 3600000

5 0
3 years ago
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