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prohojiy [21]
2 years ago
5

7.7 cm

Mathematics
1 answer:
svp [43]2 years ago
6 0

Step-by-step explanation:

I guess the 3.14 is to be used for pi (and not r, which is what we need to find out).

the volume of a cylinder is ground area × height.

the ground area is the area of a circle, which is pi×r².

so, we have

pi×r²×height = 115 cm³

3.14×r²×7.7 = 115 cm³

3.14×r² = 14.93506494...

r² = 4.756390107...

r = 2.18091497... cm

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⦁ Use both methods to find the distance between the points on the number line.
Vitek1552 [10]

Answer:

4 and 4

Step-by-step explanation:

Method A

1) Method A: Let 2 be the starting point and -2, the finishing one. Counting between 2 and -2, we can count a distance of 4 units. That's the simplest way, but not convenient to great numbers on the Number Line.

Method B:

There is no such thing as a negative distance, as a physical quantity. So this is the reason why we need to compute the absolute value of two numbers, which is simply what was done on Method B.

|2-(-2)|=|4|=4

As we are dealing with absolute values, the order is not relevant after all, the result remains the same. Take a look:

|-2-2|=|-4|=4

That's why the greater (2) or the lesser number (-2) can be the subtrahend (in bold within the brackets.

3 0
2 years ago
Solve the system.
anyanavicka [17]
X= -2
Y= -1
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3 0
3 years ago
Passes through (4,-5), slope = 3/4
Alchen [17]
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So, your final answer is y = 3/4x - 5/3

Hope this helps!
3 0
3 years ago
When and how do you use logarithms to solve exponential equations? give an example of an exponential equation that does not requ
tatuchka [14]
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x+3=-3\implies \boxed{x=-6}\\\\
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6 0
2 years ago
B. MRS + mST = MRT Q R. S​
babunello [35]

Answer:

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8 0
2 years ago
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