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babunello [35]
3 years ago
7

How to do surface area- cylinder worksheet

Mathematics
1 answer:
OLEGan [10]3 years ago
8 0

Answer:

to find surface area of cylinder

A=2πrh+2πr²

Step-by-step explanation:

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Hi boys can u help me? Will mark Brainliest!!!
Juliette [100K]

Answer:y =ax² + bx +c

1) Point (0,7)

7 = a*0² +b*0 +c

c = 7

y=ax² + bx + 7

2) Point (1,4)

4=a*1² + b*1 + 7, ----> 4 = a +b + 7, ------> a+b= - 3

3) Point (2, 5)

5=a*2² + b*2 + 7, ----> 5=4a+2b +7,---> -2=4a+2b, ----> -1=2a + b

4)  a+b= - 3, ----> b= -3 - a (substitute in the second equation)

    2a+b= -1

2a - 3 - a = -1, ----> a - 3 = -1, a =2

5) a+b= - 3

    2 + b = -3

b = -5

y=2x² - 5x + 7

Read more on Brainly.com - brainly.com/question/10543130#readmore

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Please Solve: 3x-22y when x=2 and y=10
ExtremeBDS [4]

Answer:

-214.

Step-by-step explanation:

3x - 22y     When x = 2 and y = 10 we have:

3(2) - 22(10)

= 6 - 220

= -214.

8 0
3 years ago
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the distance covered by one step is approximately 2.5 feet long. how many steps would the average person take to travel 50 feet?
Lady bird [3.3K]
You do 2.5×50 and that would give you your answer which is 125 ft long
7 0
4 years ago
What is the value of a3 in the sequence?<br> 5, 10, 20, 40, 80...
laiz [17]
I can’t see a3 do you have a picture
4 0
3 years ago
At what point does the line given by the following equation cross the y-axis?
QveST [7]
Pretty sure the answer is D:

Because the equation is in the format y=mx+c (c being the y intercept), we know that the y intercept (or where the line will cross the y axis) will be -9.

B also says -9 but we have to be careful because it states that the x axis is -9 rather than the y axis.

Hope that helped you understand.
4 0
3 years ago
Read 2 more answers
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