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3 years ago

To the nearest tenth of a centimeter, what is the circumference of a circle with a radius of 2.5 cm? (Use 3.14 for π.)

1 answer:

6 0

To find a circumference of a circle you have to use this expression: C = d<span>π. d stands for the diameter, so let's find that first.

To find the diameter multiply the radius by 2.
2.5 x 2 = 5

Let's rewrite our equation now. C = 5 </span>· π
<span>15.71 = </span>5 · π

The answer is 15.71

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The lifespans of crocodiles have an approximately Normal distribution, with a mean of 18 years and a standard

antiseptic1488 [7]

Answer:

0.0618.

Step-by-step explanation:

14-18= -4

-4/2.6= -1.538

Use the Z-table to find the proportion that aligns with 1.54 (round up because of the 0.008)

The intersection between 1.5 and 0.04 will be 0.0618.

5 0

2 years ago

In 1980 (before the era of in-vitro fertilization), there were 3,612,258 births in the United States (according to the U.S. Cens

scoray [572]

Answer:

There was a 1.93% probability of having multiples (twins or more) in 1980.

Step-by-step explanation:

There were 3,612,258 births in the US in 1980.

Of those,

68339 + 1337 = 69676 were multiplies.

What was the probability of having multiples (twins or more) in 1980?

$P = \frac{69676}{3612258} = 0.0193$

There was a 1.93% probability of having multiples (twins or more) in 1980.

8 0

3 years ago

I need help please and thank you

s344n2d4d5 [400]

Answer:

20 degrees.

Step-by-step explanation:

The 3 angles of a triangle add up to 180 degrees.

Therefore the third angle in this triangle

= 180 - (120 + 40)

= 180 - 160

= 20 degrees.

4 0

3 years ago

Need help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Rudiy27

I think the equation is y= 3/5x-1 1/2

3 0

3 years ago

There are 37 cans of pineapple on each shelf at food mart if there are 7 shelves of pineapple estimate the number of cans pineap

Luba_88 [7]

Answer:

260

Step-by-step explanation:

7 shelves containing 37 cans of pineapples each would give you 259 cans of pineapple. Then, round to the nearest ten would give you 260.

7 0

3 years ago