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3 years ago

11

Hot air balloons generally descend at the rate of 200 to 400 ft./min. Six balloons to send 245 ft./min. For four minutes find th

e total change of the outlet today for all six balloons

1 answer:

Alenkinab [10]3 years ago

6 0

Answer:

1,715 feets

Step-by-step explanation:

Give the following :

General descent rate of hot air balloon = 200 - 400ft/min

Six balloons descend at a rate of 245 ft/min for four minutes

The total change in altitude for all six balloons :

From speed = distance / time

Speed = 245 ft / min ; time = 7 minutes

Hence distance descended by the six balloons :

245 ft/min × 7 minutes = 1,715 fts

Hence total change in altitude = 1,715 feets

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A bicycle training wheel has a radius of 3 inches. The bicycle wheel has a radius of 10 inches. Approximately how much smaller,

zhuklara [117]

Answer:

$285.74\text{ inch}^2$

Step-by-step explanation:

GIVEN: A bicycle training wheel has a radius of $3\text{ inch}$ . The bicycle wheel has a radius of $10\text{ inch}$ .

TO FIND: Approximately how much smaller, in square inches, is the area of the training wheel than the area of the regular wheel.

SOLUTION:

radius of bicycle wheel $=10\text{ inch}$

area of bicycle wheel $=\pi r^2$

putting value,

area of bicycle wheel $=3.14\times10^2$

$=314\text{ inch}^2$

radius of bicycle training wheel $=3\text{ inch}$

area of bicycle training wheel $=\pi r^2$

putting value,

area of bicycle wheel $=3.14\times3^2$

$=28.26\text{ inch}^2$

difference in area of bicycle wheel and bicycle training wheel

$=\text{area of bicycle wheel}-\text{area of bicycle training wheel}$

$=314-28.26$

$=285.74\text{ inch}^2$

hence the training wheel is $285.74\text{ inch}^2$ smaller than regular wheel

4 0

3 years ago

Len [333]

The answer is b. 2.5 x 10^5

6 0

4 years ago

In the figure above, square ABCD and triangle EFG have the same areas. If AB =6 and EG =8, what is the height o triangle EFG?

lawyer [7]

Answer:

The height of triangle EFG is 9 units

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the area of a square ABCD

The area of a square is equal to

$A=b^2$

where

b is the length side of the square

we have

$b=AB=6\ units$

substitute

$A=6^2=36\ units^2$

step 2

Find the height of triangle EFG

The area of triangle EFG is equal to

$A=\frac{1}{2}(b)(h)$

where

b is the base of triangle

h is the height of triangle

we have

$b=EG=8\ units$

$A=36\ units^2$ ---> area of triangle EFG is the same that the area of square ABCD

substitute the given values in the formula

$36=\frac{1}{2}(8)(h)$

solve for h

$36=4h\\h=9\ units$

therefore

The height of triangle EFG is 9 units

3 0

3 years ago

Round 3,842,532 to the nearest 1,000

jek_recluse [69]

3,843,000. the number next to 2 (which is in the thousands place) is 5. so we add one and it became 3,843,000

7 0

3 years ago

Read 2 more answers

Find the difference.<br><br> Show your work<br><br> -3/4 - 4/3

myrzilka [38]

Answer:

-25/12

Step-by-step explanation:

I assume you want to subtract 4/3 from -3/4 OR combine -3/4 and -4/3.

Here the LCD is (4)(3) = 12.

Then -3/4 becomes -9/12 and -4/3 becomes -16/12.

Then -9/12 - 16/12 = -25/12

6 0

4 years ago