A rectangle is 5 units long. The rectangle is also 3 units wide. What is its perimeter?

Answers

Answer 1

Answer: 5+5+3+3= 16
(5x2)+(3x2)=16

Answer 2

Answer: you add 5+3 (=8)and multiply your by two (8*2=16 units)

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Gavin's anemometer measures the wind speed at 44.14 kilometers per hour. 4 times faster than the wind speed 5 hours ago. What was the wind speed 5 hours ago?

Bill measures the circumference of a circular fish pond to be 28 ft. What is the diameter of of the fish pond, rounded to the nearest foot? Use 3.14 to approximate pi.

Answers

C=pid C=28 pi=3.14 28=3.14d divide both sides by 3.14 8.9=d round 9=d answer is 9ft

you would divide 28 by 3.14 since the equation is 2pi R so the diameter would be 8.92

Alphonse is training for a marathon. He runs 6 1/2 miles every 2/3 hour. How far does he run in 2 hours?

Answers

Answer:

$19.5\ miles$ or $19(1)/(2)\ miles$

Step-by-step explanation:

we know that

Alphonse runs $6(1)/(2)$ miles every $(2)/(3)$ hour

by proportion

Find how far does he run in $2$ hours

Convert to an improper fraction first

$6(1)/(2)=(6*2+1)/2=13/2$

$((13/2))/((2/3))(miles)/(hours) =(x)/(2)(miles)/(hours) \n \nx=(13/2)*2/(2/3)\n \nx=39/2\n \nx=19.5\ miles$

Convert to mixed number

$19.5\ miles=19+0.5=19+(1)/(2)=19(1)/(2)\ miles$

19 1/2 miles. Because you take 6 1/2 and divide that in half which is 3 1/4, so that is 1/3 of an hour. 3 1/4 times 3 is 9 3/4. Since that is only 1 hour you double that, which is 19 1/2.

Suppose y is a positive integer.If x-(-y)=z will z be greater than x ?