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vitfil [10]
3 years ago
11

I need help with this math problem. Please someone help me if they can.

Mathematics
2 answers:
My name is Ann [436]3 years ago
7 0
The equation for the surface are of a cylinder is 2pi(r)(h)+2pi(r)^2
SA=2 pi(4)(12.4)+2 pi(4)^2
The surface area is 412.2, which for you is rounded to 412 cm^2
Veronika [31]3 years ago
6 0
The answer is <span>412

hope this helps 
can i plz get brainliest </span>
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dans ice cream comes in to cartons sizes. the large carton is 4 1/2 pounds the small carton holds 1 3/4 pounds les. how much ice
sineoko [7]
So you make them into an improper fraction with a common denominator. so it would be 18/4 - 7/4, and it equals 11/4, or 2 & 3/4!
6 0
3 years ago
Will mark as brainliest<br><br> ...
Anuta_ua [19.1K]

Answer:

Third sequence (7, 2, 1, -4, -10)

In the first sequence, -4 has to be in front of -10 because it is larger.

In the second sequence, 7 goes in the beginning, with 2 then 1 following, with -4 behind and -10 behind -4.

In the third option, 7 must be in the front, with 2, 1, then -4, then -10 following.

The answer = third sequence.

Hope it helped!

4 0
3 years ago
Read 2 more answers
ILL MARK BRAINLIST
Mkey [24]

Answer:

vertical angles

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Write three numbers that round to 70 when rounded to the nearest ten
Trava [24]
The digit 7 is in the tens place so 74 will become either 70 or 80 after rounding off to the nearest ten. Draw a number line with 3 numbers on it: 70, 75 and 80. (Both possible rounded off numbers and the number in the middle.
3 0
3 years ago
Can someone help me for this question please? I just keep getting wrong answer! Pls someone explain to me step by step! ASAP!!!
Kobotan [32]

Answer:

  84 feet

Step-by-step explanation:

This problem involves several steps. The first step is to realize that the given figure does not show the required number of vertical stringers. It shows 5, but there will be 7 of them. The given diagram is helpful in that it shows a vertical stringer on the centerline of the arches.

The second step is to write a function that will tell you how long the stringer will be. I find it convenient to write the equation for an arch shape such as this using the parent function h(x) = 1-x^2. This parent function gives an arch of height 1 and width 1 from center (a total width of 2). You want an arch that is 16 ft high and 40 ft wide (one side from center), so you must scale this parent function both horizontally (by 40) and vertically (by 16). It becomes ...

  H(x) = 16(1 -(x/40)^2)

The taller arch is twice this height, so the length of a vertical stringer at position x is

  vertical length = 2H(x) -H(x) = H(x)

That is, the function H(x) we defined can be used to find the length of the stringers.

The third step is to find the stringer lengths. It can save some energy if you realize that the problem is symmetrical, so that the stringer at x=-30 is the same length as the one at x=30. We need to find stringer lengths every 10 feet from -40 feet to +40 feet. Of course, the ones at ±40 feet are zero length, because that is where the two arches meet.

  H(-30) = 16(1 -(3/4)^2) = 7

  H(-20) = 16(1 -(1/2)^2) = 12

  H(-10) = 16(1 -(1/4)^2) = 15

  H(0) = 16

Then the fourth step is to add up the stringer lengths, rounding the result as required.

  7 +12 +15 +16 +15 +12 +7 = 16 + 2(34) = 84 . . . . feet (no rounding needed)

Finally, you need to answer the question asked:

  The sum of vertical stringer lengths is 84 feet.

5 0
3 years ago
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