The perimeter of this rectangle and area, and if the area was 100 what would the value of x be, also if the area is 200, what is the value of x. thank you so much to whoever answers

Given:

Length of the rectangle = x + 21

Width of the rectangle = 5

To find:

Perimeter and area of the rectangle

Solution:

Perimeter =

Perimeter units

Area = length × width

Area square units

Substitute perimeter is 100 and find the value of x:

Subtract 52 from both sides.

Divide by 2 on both sides, we get

x = 24

Substitute area is 200 and find the value of x:

Subtract 105 from both sides.

Divide by 5 on both sides, we get

x = 19

If the perimeter is 100, then the value of x is 24.

If the area is 200, then the value of x is 19.

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

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2/3

step-by-step explanation: