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Varvara68 [4.7K]
3 years ago
13

Write an equation to find how long it will take for the mass of the radioactive substance to reach 27grams.

Mathematics
1 answer:
kiruha [24]3 years ago
3 0

were are the answer choices

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The net of a solid figure is shown below:
TiliK225 [7]
The answer is 6*4*4 square inches where 4*4 gives us the area of one square and multiplying by 6 gives you the total surface area.
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if your bicycle tire has a diameter of 9 inches. how many rotations does each tire make if you travel 300 feet?
Vesnalui [34]
Step One
Calculate the number of feet traveled in 1 rotation.

Formula
C = π*d
P = 3.14
d = 9 inches = 9/12 feet = 3/4 of a foot.

C = 3.14 * 3/4 = 2.355 So that means that every time the tire turns around 1 complete turn, the distance traveled on the ground is 2.355 feet.
 
Step Two
Figure out the number of revolutions.
1 revolution = 2.355 feet
x revolutions = 300 feet.

1/x = 2.355/ 300  Cross multiply
2.355 feet * x = 1 rev * 300 feet
2.355 x = 300 rev Divide by 2.355
x = 300 / 2.355 
x = 127.39 revolutions. <<<< Answer

8 0
3 years ago
Exhibit 10-7 In order to estimate the difference between the average hourly wages of employees of two branches of a department s
Leokris [45]

Answer:

E(x)=1

Step-by-step explanation:

From the question we are told that:

Sample mean 1 \=x_1=$9

Sample mean 1 \=x_2=$8

Sample standard deviation 1 \sigma_1 = $2

Sample standard deviation 1 \sigma_2 = $1

Generally the equation for Point estimate is mathematically given by

E(x)=\=x_1-\=x_2

E(x)=9-8

E(x)=1

8 0
2 years ago
What is the value of x?
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Answer: B 15 units

Step-by-step explanation:

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Given angle 2 is congruent to angle 4 prove measure of angle 1 equals measure of angle 3
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If two angles are equal then the other angles will also be equal
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