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Nostrana [21]
3 years ago
11

Which of the following is the best approximation of the volume of a sphere with a 7 cm radius?

Mathematics
2 answers:
White raven [17]3 years ago
8 0

To find the volume of a sphere you would use the equation: \frac{4}{3}πr³

You would plug in the radius in r

Your equation would look like this now:

\frac{4}{3}π(7)³

When you solve that you would get:

1436

Since it's 3 dimentional you would use ⇒ ³

Your answer would be B. 1436cm³


Zielflug [23.3K]3 years ago
7 0

the answer is 1436.03 but your approximation is 1436

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The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference.
il63 [147K]

Answer:

2

Step-by-step explanation:

If the common difference is d we can write:

-5 + 9d = 13

9d = 18

d = 2

3 0
3 years ago
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A hot air balloon is traveling at a altitude of 2400 feet. It begins to descend at a rate of 75 per minute. What is an expressio
irina1246 [14]

Answer:

y=-75x+2400

Step-by-step explanation:

y is the height

-75 is the rate of change so you put that before your x

2400 is your starting value/y intercept

not very good explanation but hope this helps

7 0
3 years ago
Use a table to find (x+3)(x+2).​
bixtya [17]

Answer:

X^2 + 5x + 6

Step-by-step explanation:

(X times X) + (x times 2) + (x times 3) + ( 3  times 2)

X^2 + (2x) + (3x) + 6

combind like terms

X^2 + 5x + 6

8 0
3 years ago
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Which two points in the graphed function have an average rate of change of 5?
serious [3.7K]

Answer:

B. points A and B

Step-by-step explanation:

"Rate of change" is just a fancy name for slope.

The question asks for points on the graph having a slope of 5.  We know a slope of 5 is a positive (goes up from left to right) and it's quite steep.

By looking at the graph, we see that to have a slope of 5, it has to take place in the first half of the graph.

Let's look at the possible options:

A. Points D and F: From point D to point F, you're going down, so the slope is negative.  NO

B. Points A and B: goes up, pretty steep.  Let's calculate the slope.

Point A: (2,1), Point B: (3,6)

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We found it!

C. Points B and C: goes up, pretty steep too.  Let's calculate the slope:

Point B: (3,6) , Point C: (4,9)

Slope = (9 - 6) / (4 - 3) = 3 / 1 = 3, NO, not the slope we're looking for

D. Points C and E: goes down, NO,  not what we want.

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3 years ago
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The temperature outside was 8 degrees below zero. The next day it went up 5 degrees, followed by a decrease of 7 degrees. What i
Tatiana [17]

Hello! Your answer would be -10 degrees.

The temperature starts out eight degrees below zero. 0 - 8 = -8. Therefore, it starts off at -8 degrees.

Then, it increases by 5 degrees. Therefore, add 5 to -8. -8 + 5 = -3. Therefore, the next day has a temperature of -3 degrees.

Finally, it decreases by 7 degrees. -3 - 7 = -10. This shows us our final result - -10 degrees.

Hope this helps!

6 0
3 years ago
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