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user100 [1]
3 years ago
14

The radius of a circle is 18 inches. What is the circle's area?

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
3 0

Answer:

1017.88 inches

Step-by-step explanation:

Area = πr2 = π x 182 ≈ 1017.87602

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What is the surface area of a box with a height and width of 5 inches and a length of 8 inches ?
vodomira [7]

Answer:

210 sq in

Step-by-step explanation:

Box dimensions: 5 x 5 x 8

2 faces: 5 x 5 -> 2 * 5 * 5 = 50

4 faces: 5 x 8 -> 4 * 5 * 8 = 160

Total = 50 + 160 = 210 sq in

5 0
3 years ago
Jesse wanted to buy some lettuce that sells for $ 0.52 per pound. How much will Jesse spend on 1.3 lbs. of lettuce? A single hea
IgorLugansk [536]

Answer:

Jesse will spend 0.68$ for 1.3 lbs of lettuce. Jesse will spend about 0.46$ on a single head of lettuce.

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
Find the nth term of this quadratic sequence 3,8,15,24,35...
iris [78.8K]

Answer:

n^2 + 2n.

Step-by-step explanation:

n       =       1     2     3     4     5

term t =     3    8     15   24   35

Diffs  =          5    7      9     11

                        2     2     2             - so the nth term contains n^2.

n^2   =       1     4      9    16    25

t - n^2 =    2    4      6     8     10

This is an arithmetic sequence with nth term = 2 + (n-1)2 = 2n

So the nth term of the quadratic sequence = n^2 + 2n.

8 0
3 years ago
(-2 2/3) as a improper fraction. Please explain all steps. Ty.
Neko [114]

Step-by-step explanation:

-2\frac{2}{3}

To convert a mixed number to an improper fraction, you multiply the number in front of the fraction by the bottom number.

In this case, you will multiply 2 (because it is before the fraction) by 3 (because it is the bottom number of the fraction).

2 x 3 = 6

Then, you add 6 to the number on top.

6 + 2 = 8

Finally, you put 8 back onto the bottom number, ending up with -8/3.

Please mark as Brainliest! :)

4 0
3 years ago
Read 2 more answers
Starting at 1:00 p.M., The temperature changes -4 degrees Fahrenheit per hour. Write and solve an equation to find how many hour
lara [203]

Answer:

0.25 hours

Step-by-step explanation:

The equation for a linear function is given by:

y = mx + b,

where y and x are variables, m is the rate of change of y with respect to x and b is the initial value of y (value of y when x = 0).

Let x represent the number of hours after 1:00 P.M and let y represent the temperature in degree Fahrenheit.

Let us assume that initial the temperature is 0°F. The temperature changes -4 degrees Fahrenheit per hour. From the equation of a linear function y = mx + b:

m = -4 degrees Fahrenheit per hour, b = 0. Hence:

y = -4x

The time taken to reach -1°F is gotten by substituting y = -1 and finding x:

y = -4x

substituting:

-1 = -4x

x = -1 / -4

x = 0.25 hours

0.25 hours = 0.25 hours * 60 minute / 1 hour = 15 minute

Therefore at 1:15 P.M, the temperature is -1°F

8 0
3 years ago
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