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Doss [256]
3 years ago
14

Please help me I will give brainliest

Mathematics
1 answer:
fiasKO [112]3 years ago
8 0

Answer: the second option I think

Step-by-step explanation:

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15. Before oil is added to a certain road surface material, the other ingredients are mixed. The mixture contains
mojhsa [17]

Answer:

sand = 3450 pounds

3/4 inch stones =6750 pounds

1 inch stones =4800 pounds.

Step-by-step explanation:

The mixture composition is :

45% three-quarter inch stones

32% inch stones and

sand for balance

The percent here is by mass of material used.

Weight of mixture is 15,000 pounds before oil addition.

Use the percent by weight for the two types of stones and calculate real values in pounds

Formula to apply is:

Mass percent = (mass of a material/ total mass of mixture) * 100

For 3/4 inch stones it will be:

0.45= \frac{x}{15000} *100\\\\0.45=\frac{x}{150} \\0.45*150=x\\x=6750

The 3/4 inch stones weigh 6750 pounds

The 1 inch stones will be

32/100 * 15000 =4800

The 1 inch stones weigh = 4800 pounds

Total for the two items : 4800+6750 =11550 pounds

The sand used weighs : 15000 - 11550 = 3450 pounds

8 0
4 years ago
I WILL UPVOTE YOUR ANSWER!!<br> ANSWER THIS CORRCTLY<br> THANK YOU!
kramer
-0.85, 0.25, 60, 60 2/40
hope this helps! :)
8 0
3 years ago
How can u use math to detirmine fractions equalvalent to 1/4
serg [7]

Answer:

You can multiply the numerator and denominator by the same number.

For example, 1x2/4x2=2/8 which is equal to 1/4.

4 0
4 years ago
Portioning a line segment​
harkovskaia [24]

Answer:

the ratio is 2:30 sorry if its incorrect have a nice day

4 0
2 years ago
1 of 5
timofeeve [1]

Answer:20 girls

Step-by-step explanation:the difference between 3 and 4 is one so there will be a difference of one between the 2 questions.

5 0
3 years ago
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