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REY [17]
2 years ago
15

Determine the perimeter of a equilateral triangle with the sides of 28 cm.

Mathematics
1 answer:
Arada [10]2 years ago
3 0

Answer:

84

Step-by-step explanation:

28*3

asdfffghjkkll

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Pumps A, B, and C operate at their respective constant rates. Pumps A and B, operating simultaneously, can fill a certain tank i
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Answer:D) 1 hr

Step-by-step explanation:

Given

Pump A and B can fill tank in \frac{6}{5} hr

Pump A and C can fill tank in \frac{3}{2} hr

Pump B and C can fill tank in 2 hr

Let A be the total hr taken A therefore rate of A=\frac{1}{A} /hr

Let B be the total hr taken B therefore rate of B=\frac{1}{B} /hr

Let C be the total hr taken C therefore rate of C=\frac{1}{C} /hr

\frac{1}{A}+\frac{1}{B}=\frac{5}{6}-----1

\frac{1}{B}+\frac{1}{C}=\frac{1}{2}-----2

\frac{1}{A}+\frac{1}{C}=\frac{2}{3}-----3

Adding 1,2 & 3

2(\frac{1}{A}+\frac{1}{B}+\frac{1}{C})=\frac{5}{6}+\frac{1}{2}+\frac{2}{3}

\frac{1}{A}+\frac{1}{B}+\frac{1}{C}=\frac{2}{2}

\frac{1}{A}+\frac{1}{B}+\frac{1}{C}=1

thus time taken by A,B and C combined is 1 hr

7 0
2 years ago
Papa john is 50 years old. His age is 2 years more than 3 times the age of jimmy John
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Jimmy John is sixteen
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Simplify 8(3+5)<br><br><br> Help me please
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Answer:

64

Step-by-step explanation:

pemdas says parenthesis first

3+5=8

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8 times 8 equals 64

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S+M+L=49

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Please please help me
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