3 years ago

Cesium-137 has a half-life of 30 years. Find the

Mathematics

2 answers:

Lena [83]3 years ago

4 0

Answer:

199 years

Step-by-step explanation:

Hope it helps u

FOLLOW MY ACCOUNT PLS PLS

malfutka [58]3 years ago

3 0

Answer:

199 yr

Step-by-step explanation:

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Gnoma [55]

Answer:

Dilation by a scale factor of 4 followed by reflection over the y-axis

Step-by-step explanation:

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3 years ago

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What is 2 x 7 divided by 3 subtracted by 2.

Fudgin [204]

Answer:

Step-by-step explanation:

2x7=14

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2 years ago

What is the area of the fire pit? (Use 3.14 for pi.)

laila [671]

Answer:

$Area = 65.94$

Step-by-step explanation:

I will assume that the shaded region is the fire pit

Given

$R = 5$

$r = 2$

Required

Determine the area of the fire pit

First, calculate the area of the big circle.

$A_2 = \pi R^2$

Area of the small is:

$A_1 = \pi r^2$

The area of the pit is:

$Area = A_2 - A_1$

$Area = \pi R^2 - \pi r^2$

$Area = \pi (R^2 - r^2)$

$Area = 3.14 (5^2 - 2^2)$

$Area = 3.14 (25 - 4)$

$Area = 3.14 * 21$

$Area = 65.94$

5 0

3 years ago

Fourteen less than eight times a number is three more than four times the number. What is the number?

wel

Answer:

8n - 14 = 4n + 3 is the equation

and

n = 4.25

Step-by-step explanation:

hope this helped a little bit :))

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3 years ago

Based on the Empirical Rule, what percent of the data would fall AFTER the first standard deviation GREATER than the mean?

Tcecarenko [31]

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3 years ago