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fgiga [73]
2 years ago
10

David is a groundskeeper at Triangle Park, scale shown below.

Mathematics
1 answer:
stellarik [79]2 years ago
3 0
Oh you got an answer good luck
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Simplify 4.510.<br> a 4.51<br><br><br> b 1
attashe74 [19]

Answer:

a

Step-by-step explanation:

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3 years ago
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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

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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
3 years ago
Which best describes the error in finding the surface area of the cylinder?<br> I aM CoNfuSiOn
Kazeer [188]

The area of only one base was added. The first term should have a factor of 2.

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Aleksandr-060686 [28]

Answer:

-5(2) (-2) +2 + 4(-2) +7 = 21

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The length of a rectangle exceeds its width by 7 inches and the area is 30 inches what are the length and width of the rectangle
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