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Ratling [72]
3 years ago
5

Proportion Application

Mathematics
1 answer:
balu736 [363]3 years ago
3 0
Set up the proportions
\frac{3}{4.5}  =  \frac{825}{x}
Cross multiply
3x = 3712.5

Divide by 3
x = 1237.5

4.5 gallons would cover 1237.5 square feet
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Does anybody know it part 2
makvit [3.9K]

Answer:

x = 33

Step-by-step explanation:

(x + 13) + (4x + 2) = 180

x + 13 + 4x + 2 = 180

5x + 15 = 180

5x = 180 - 15

5x = 165

x = 165/5

x = 33

Check:

(x + 13) + (4x + 2) = 180

(33 + 13) + 4(33) + 2 = 180

46 + 132 + 2 = 180

46 + 134 = 180

4 0
3 years ago
The sum of two integers is 81.if the product is 1088.what are the integers
arlik [135]

Answer:

(a;b)={(17; 64); (64; 17)}

Step-by-step explanation:

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a²-64a-17a+1088=0

a(a-64)-17(a-64)=0

(a-17)(a-64)=0

=> a=17 and a=64

for a=17 => b=81-17=64

for a=64 => b=81-64=17

(a;b)={(17; 64); (64; 17)}

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Step-by-step explanation:

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Step-by-step explanation:

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