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ss7ja [257]
3 years ago
14

Select all of the following equations the number 80 will make true.

Mathematics
2 answers:
wel3 years ago
8 0
O wait nvm sry

B and E
Lemur [1.5K]3 years ago
3 0

Answer:

I need Help on this one too.

Step-by-step explanation:

But I think Its E. and B. Cause I just to the test.

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Ricky can ride 17 km on his bike in the same length of time ha can walk 9 km.if his riding speed is 4 kph faster than his walkin
aivan3 [116]
Distance=speed times time
if they take the same time, we cal the time , t

b=bike speed
w=walking speed

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b is 4 more than w
b=4+w

we have
17=bt
9=wt
b=4w

ok so
multiply first equation by 9 and 2nd by 17

153=9bt
153=17wt
set equal
9bt=17wt
divide both sides by t
9b=17w
sub b=4+w for b
9(4+w)=17w
distribute
36+9w=17w
minus 9w both sides
36=8w
divide both sides by 8
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3 years ago
Dwayne brought 5 yards of wrapping paper how many inches of wrapping paper did he buy
Mademuasel [1]
It's 180 inches of wrapping paper.
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Oder of operations is this;

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3 years ago
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Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches. Round your answer to the nearest inch.
Paraphin [41]

Answer:

88 inches

Step-by-step explanation:

Diameter is 2 times the radius (r) so divided 28 by 2 to get 14 as the radius.

Plug this in:

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