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3 years ago

DOES ANYONE KNOW THIS PLEASE HELP ME ASAPPP. The radius is 6 m if you can’t see it well enough. Thank you. I’ll give 12 points.

Mathematics

1 answer:

cupoosta [38]3 years ago

4 0

The answer is B i’m pretty sure

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Suppose you spend $23 and you pay with a $50 bill. The cashier gives you your change in bills. List all the different ways you c

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2-10s 1-5 2-1s or 3-5s 1-10 2-1

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3 years ago

suppose the population of a certain city is 5355 thousand. It is expected to decrease to 4566 thousand in 50 years. Find the per

xz_007 [3.2K]

Answer: 14.7338936% decrease

$\frac{5355}{100} = \frac{4566}{x}$

cross-multiply

85.2661064 = x

100 - 85.2661064 = 14.7338936

Check: 0.852661064 * 5355 = 4566

If permitted, you may round for a simpler (yet less precise and exact) answer. For instance, rounding to the hundredths would make it ~14.73%.

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3 years ago

A ride at an amusement park moves the riders in a circle at a rate of 8.0 m/s. The radius of the ride is 4.0 meters. What is the

Vesnalui [34]

Answer:

The Answer is D-0.50 m/s^2.

Step-by-step explanation:

I got it right when graded.

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2 years ago

The total cost of a shopping trip was $123.35? Layla bought 4 skirts and a pair of shoes for $35.67. Which equation can be used

VARVARA [1.3K]

Answer: D

Step-by-step explanation: The 4 skirts cost are unknown which makes up the 4x and the extra pair of shoes adds on to the cost by 35.67.

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4 years ago

A cylinder has radius r and height h. A. How many times greater is the surface area of a cylinder when both dimensions are multi

Ierofanga [76]

Answer: A. Factor 2 => 4x greater

Factor 3 => 9x greater

Factor 5 => 25x greater

Step-by-step explanation: A. A cylinder is formed by 2 circles and a rectangle in the middle. That's why surface area is given by circumference of a circle, which is the length of the rectangle times height of the rectangle, i.e.:

A = 2.π.r.h

A cylinder of radius r and height h has area:

$A_{1}$ = 2πrh

If multiply both dimensions by a factor of 2:

$A_{2}$ = 2.π.2r.2h

$A_{2}$ = 8πrh

Comparing $A_{1}$ to $A_{2}$ :

$\frac{A_{2}}{A_{1}}$ = $\frac{8.\pi.rh}{2.\pi.rh}$ = 4

Doubling radius and height creates a surface area of a cylinder 4 times greater.

By factor 3:

$A_{3} = 2.\pi.3r.3h$

$A_{3} = 18.\pi.r.h$

Comparing areas:

$\frac{A_{3}}{A_{1}}$ = $\frac{18.\pi.r.h}{2.\pi.r.h}$ = 9

Multiplying by 3, gives an area 9 times bigger.

By factor 5:

$A_{5} = 2.\pi.5r.5h$

$A_{5} = 50.\pi.r.h$

Comparing:

$\frac{A_{5}}{A_{1}}$ = $\frac{50.\pi.r.h}{2.\pi.r.h}$ = 25

The new area is 25 times greater.

B. By analysing how many times greater and the factor that the dimensions are multiplied, you can notice the increase in area is factor². For example, when multiplied by a factor of 2, the new area is 4 times greater.

3 0

3 years ago