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deff fn [24]
3 years ago
15

12 is 40% of what number?

Mathematics
2 answers:
bezimeni [28]3 years ago
7 0

Answer:

the correct answer is 30

Step-by-step explanation:

divide 12 by .4 to get the correct asnwer

balandron [24]3 years ago
3 0

Answer:

30

Step-by-step explanation:

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mars1129 [50]

Answer:

X = 75

Step-by-step explanation:

Angle F and angle X are corresponding angles so they are congruent  (equal)

Angle F and 105 form a straight line so they are supplementary angles, which means they add to 180

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3 years ago
When a water-cooled nuclear power plant is in operation, oxygen in the water is transmuted to nitrogen-17. After the reactor is
wolverine [178]

Answer:

The differential equation is \frac{dR}{dt} = -kR

Step-by-step explanation:

Differential equation for the rate of change in radiation level:

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\frac{dR}{dt}

After the reactor is shut down, the radiation from the nitrogen-17 decreases in such a way that the rate of change in the radiation level is directly proportional to the radiation level.

Rate of change is k. Decreases means that k is negative. Proportional to the radiation level of R means that -k multiplies R. So the differential equation is:

\frac{dR}{dt} = -kR

7 0
3 years ago
How much should be added to 58.4 to makes 400?​
Ket [755]

Answer:

341.6

Step-by-step explanation:

400-58.4=341.6

6 0
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Special right triangles
telo118 [61]

Answer: please find the attached files

Step-by-step explanation:

A unit circle formula and special triangle of 45, 30 and 60 degrees can be used to solve the problem.

Please find the attached files for the solution

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3 years ago
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