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andrey2020 [161]
3 years ago
10

Which BEST describes how the human circulatory and respiratory systems interact?

Mathematics
2 answers:
liberstina [14]3 years ago
7 0
C should be the answer
Nina [5.8K]3 years ago
5 0

Answer:

La d D

Step-by-step explanation:

por que si

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Megan starts eating breakfast at 9:54 AM. Tell what time she is done with breakfast if she takes the given number of minutes to
Studentka2010 [4]

The time she will be done with her breakfast is by = 10:48 am

<h3>Conversation of time</h3>

The time Megan started her breakfast = 9:54 AM.

In terms of hours = 9

In terms of minutes = 54

If she takes the given number of minutes to eat which is = 54 mins .

Therefore, the time she will be done with her breakfast is = 9:54 + 54

= 10: 48 am

Learn more about time here:

brainly.com/question/10428039

8 0
2 years ago
Holly rode her bike for 24 miles at 6 miles per hour. She finished her ride at 1:00 p.m.
Bezzdna [24]
Time = distance/speed
Since you want to find the time Holly spent riding, you need to divide her distance (24 miles) by her speed (6 miles/hour) to get the number of hours (4) that she rode. Her starting time added to the time spend riding will give her ending time. One must subtract the riding time from the ending time to find the starting time.

Selection A is appropriate.
8 0
3 years ago
Verify sin^4 x - sin^2 x = cos^4 x - cos^2 x is an identity
Citrus2011 [14]

Answer:

(identity has been verified)

Step-by-step explanation:

Verify the following identity:

sin(x)^4 - sin(x)^2 = cos(x)^4 - cos(x)^2

sin(x)^2 = 1 - cos(x)^2:

sin(x)^4 - 1 - cos(x)^2 = ^?cos(x)^4 - cos(x)^2

-(1 - cos(x)^2) = cos(x)^2 - 1:

cos(x)^2 - 1 + sin(x)^4 = ^?cos(x)^4 - cos(x)^2

sin(x)^4 = (sin(x)^2)^2 = (1 - cos(x)^2)^2:

-1 + cos(x)^2 + (1 - cos(x)^2)^2 = ^?cos(x)^4 - cos(x)^2

(1 - cos(x)^2)^2 = 1 - 2 cos(x)^2 + cos(x)^4:

-1 + cos(x)^2 + 1 - 2 cos(x)^2 + cos(x)^4 = ^?cos(x)^4 - cos(x)^2

-1 + cos(x)^2 + 1 - 2 cos(x)^2 + cos(x)^4 = cos(x)^4 - cos(x)^2:

cos(x)^4 - cos(x)^2 = ^?cos(x)^4 - cos(x)^2

The left hand side and right hand side are identical:

Answer:  (identity has been verified)

3 0
3 years ago
For her birthday party, Kelly invited her friends to a nearby roller-skating rink. The area of the rectangular rink is 1,530 ft2
oksian1 [2.3K]

Answer:

30ft

Step-by-step explanation:

1530ft2 divided by 51ft.

6 0
3 years ago
One half multiplied by four sevenths
bagirrra123 [75]

Answer:

2/7.

Step--step explanation:

1/2 * 4/7.

Multiply the numerators and the denominators:

= 1*4 / 2*7

= 4 / 14    Now  divide numerator and denominator by 2:

=  2/7.

7 0
3 years ago
Read 2 more answers
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