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Aleks [24]
3 years ago
13

Find the total surface area of this cone

Mathematics
1 answer:
fenix001 [56]3 years ago
3 0

Answer:

S.A. = 1,017.36

Step-by-step explanation:

S.A. = \pi r^{2} + \pi rl

12 x 12 x 3.14 = 452.16

3.14 x 12 x 15 = 565.2

565.2 + 452.16 = 1,017.36

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ANSWER ASAP WILL GIVE BRAINLIEST PLS HELP
jeka57 [31]

Answer:

Step-by-step explanation:

11) Probability of Black is  1/4

12) P of  not orange is  3/4

13) P of blue or black is 1/2

this should be pretty easy for you, why is it tough?  don't say .. " it just is" say what  makes it tough.  I'm curious why this is difficult.   :?

3 0
3 years ago
Suppose f is a continuous function on [-2, 2) such that
Leviafan [203]

Answer:

2. a and b only.

Step-by-step explanation:

We can check all of the given conditions to see which is true and which false.

a. f(c)=0 for some c in (-2,2).

According to the intermediate value theorem this must be true, since the extreme values of the function are f(-2)=1 and f(2)=-1, so according to the theorem, there must be one x-value for which f(x)=0 (middle value between the extreme values) if the function is continuous.

b. the graph of f(-x)+x crosses the x-axis on (-2,2)

Let's test this condition, we will substitute x for the given values on the interval so we get:

f(-(-2))+(-2)

f(2)-2

-1-1=-3  lower limit

f(-2)+2

1+2=3 higher limit

according to these results, the graph must cross the x-axis at some point so the graph can move from f(x)=-3 to f(x)=3, so this must be true.

c. f(c)<1 for all c in (-2,2)

even though this might be true for some x-values of of the interval, there are some other points where this might not be the case. You can find one of those situations when finding f(-2)=1, which is a positive value of f(c), so this must be false.

The final answer is then 2. a and b only.

4 0
3 years ago
PLEASE HELP ME I DONT UNDERSTAND
miss Akunina [59]

Answer:

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Step-by-step explanation:

v7grauvi5c7v6v7g8h

3 0
3 years ago
Laura has $720 and saves $30 a week. Taylor has $1200 and spends $30 a week. in how many weeks will Taylor and Laura have the sa
Setler79 [48]
Let w = number of weeks.

In week w,
Laura has: 720 + 30w
Taylor has: 1200 - 30w

Set the two amounts equal and solve for w, the number of weeks.

720 + 30w = 1200 - 30w

60w = 480

w = 8

They will have the same amount of money in 8 weeks.

Laura will have in 8 weeks:
720 + 30w = 720 + 30 * 8 = 720 + 240 = 960

Taylor will have in 8 weeks:
1200 - 30w = 1200 - 30 * 8 = 1200 - 240 = 960

They will both have $960 in 8 weeks.
4 0
3 years ago
A high speed elevator can rise 500 feet in 30 seconds. What expressions represents the rate, in feet per minute, of the elevator
Artemon [7]
500divided by 30 =16.66666666667
3 0
3 years ago
Read 2 more answers
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