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saveliy_v [14]
3 years ago
12

Please help I would really appreciate it

Mathematics
1 answer:
vlabodo [156]3 years ago
8 0

Answer:

Percentage Change Formula

Step-by-step explanation:

Percent change can be applied to any quantity you measure over time. If the price increased use the formula

((New Price - Old Price) / Old Price) × 100

If the price decreased flip the first part to

((Old price - new price)

and then follow the rest of the formula.

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Stanford University's soccer field has an area of 8,800 square yards. Its length is 30 yards longer than its width. Write an equ
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Let x = the width and x + 30 = the length.

x(x + 3) = 8800

x^2 + 3x = 8800

x^2 + 3x - 8800 = 0

Using the Quadratic Formula, I get x ≈ 92.320 yd and x + 30 ≈ 122.320 yd.

2x + 2x + 60 = 600

4x + 60 = 600

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x = 135

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The area would be 22275 yd^2.
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Please answer! It would be appreciated if work is also shown!
borishaifa [10]

Quantity of paint left = \frac{389}{480} gallons

Solution:

Quantity of yellow paint = 1\frac{1}{5}=\frac{6}{5} gallons

Quantity of green paint = 1\frac{1}{6}=\frac{7}{6} gallons

Quantity of blue paint = \frac{7}{8} gallons

Quantity of paint used = \frac{3}{4} gallons of each paint

Quantity of paint left = 1-\frac{3}{4}=\frac{1}{4} gallons of each paint

Quantity of paint left = (\frac{6}{5}+\frac{7}{6}+\frac{7}{8})\times\frac{1}{4}

Taking LCM for 5, 6, 8, we get LCM = 120

(\frac{6}{5}+\frac{7}{6}+\frac{7}{8})\times\frac{1}{4}=(\frac{144}{120}+\frac{140}{120}+\frac{105}{120})\times\frac{1}{4}

                         =(\frac{389}{120})\times\frac{1}{4}

                         =\frac{389}{480}

Hence, Mark will have \frac{389}{480} gallons of paint left after painting the mural.

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