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Paul [167]
3 years ago
11

The times for Erin’s five laps around the track were 56.6 seconds, 57.9 seconds, 57.5 seconds, 65.3 seconds, and 65.7 seconds. U

sing rounding to the nearest whole second as the only estimation technique, what is the total estimated time for Erin’s five laps in seconds?
Mathematics
2 answers:
Dafna1 [17]3 years ago
7 0

Answer:

i think is probably 70 sec or 75

Step-by-step explanation: idk

Nezavi [6.7K]3 years ago
3 0
It’s 75 seconds for the answer
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Help pls …..———<br> :….—-
LenaWriter [7]

Answer:

a/

36s ~ 360º

1s ~ ?

so 1 * 360 / 36 = 10º

b/

36*3/4=27s (closest)

36*1/4=9s (farthest)

c/

20ft

4 0
2 years ago
Read 2 more answers
The number of buckets of paint n needed to paint a fence varies directly with the total area of the fence and inversely with the
Vesna [10]
It takes three 1-gallon buckets to paint 72sqft, if you simplify or find the unit rate, you can know that you can paint 24sqft with one 1-gallon bucket of paint. Since you need to paint 90 sqft, you can’t use three buckets because it only covers 72sqft, but if you use 4 buckets, it will cover 96sqft.

THE ANSWER IS 4 1-GALLON BUCKETS OF PAINT
6 0
3 years ago
If Janice works overtime, she receives an hourly rate of 1½ times her regular hourly rate of $14.00 an hour. What is her overtim
ankoles [38]
$21.00 per hour. $14.00 * 1.5 = $21.00
6 0
3 years ago
A certain right triangle with integer side lengths has perimeter $72$. What is its area?
JulijaS [17]

Answer: 216 square units

====================================================

Explanation:

A common pythagorean triple you may be familiar with is the 3-4-5 right triangle. This has two legs of 3 and 4, and a hypotenuse of 5. The perimeter is 3+4+5 = 7+5 = 12. Note how this is a factor of 72.

If we multiply the perimeter (12) by 6, then 12*6 = 72. So we have scaled the triangle by a factor of 6. Each length is 6 times longer

the side length 3 becomes 3*6 = 18

the side length 4 becomes 4*6 = 24

the side length 5 becomes 5*6 = 30

The new perimeter is 18+24+30 = 42+30 = 72

The last step is to find the area. The two legs of this triangle are the base and height

area = 0.5*base*height

area = 0.5*18*24

area = 9*24

area = 216

-----

Or you could find the area of the 3-4-5 right triangle to get

area = 0.5*base*height = 0.5*3*4 = 6

then multiply by 36 to get 6*36 = 216. The 36 is the square of the scale factor 6 we applied above. The new lengths are 6 times longer, so the new area is 6^2 = 36 times larger.

7 0
3 years ago
Translate the sentence into an equation. Nine more than the product of a number and is equal to . Use the variable for the unkno
Blizzard [7]
(X+X)=x+9 what this mean is that when you get the answer you have to add it by nine
6 0
3 years ago
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