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damaskus [11]
3 years ago
9

12 is 40% of what number? (Hint: Divide) * O 24 30 36 O 48

Mathematics
2 answers:
Dennis_Churaev [7]3 years ago
3 0

Answer:

B. 30

Step-by-step explanation:

Honestly I just looked it up

navik [9.2K]3 years ago
3 0

Answer:

30

Step-by-step explanation:

12÷ 40= 0.30

0.30= 30

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Subtract.
3241004551 [841]

Answer:

405

Step-by-step explanation:

5 0
2 years ago
Round your answer to the nearest tenth.
Kruka [31]

Answer:

The value of MB = 8.4

Step-by-step explanation:

We know that the point of intersection of the Medians of a triangle is called the centroid of a triangle.

Thus,

For the given triangle ΔJKL,

  • The point M is the centroid of the triangle.

We also know that the centroid is 2/3 of the distance from each vertex to the midpoint of the opposite side.

Also, each Median is split into two parts such that the longer part is 2 times the length of the smaller part.

In our case,

The median KB is split into two parts such that the longer part KM is 2 times the length of the smaller part MB.

i.e.

KM = 2 MB

Given KM = 16.8

so substitute KM = 16.8 in the equation KM = 2 MB

16.8 = 2 MB

MB = 16.8/2

MB = 8.4

Therefore, the value of MB = 8.4

7 0
3 years ago
Read 2 more answers
If 15 is added to a number the result is 56 less than twice the number
mart [117]
Let, the number = x
It would be: x + 15 = 2x - 56
2x - x = 15 + 56
x = 71

In short, Your Answer would be 71

Hope this helps!
3 0
3 years ago
Suppose that 8% of the general population has a disease and that the test for the diesease is accurate 70% of the time. What is
balu736 [363]

Answer:

P = 0.332

Step-by-step explanation:

The probability of having the disease is 0.08

The probability that the test predicts with accuracy is 0.7.

We need to find the probability that the test positive for the disease.

Several cases may occur.

Case 1.

You have the disease and the test predicts it accurately

P_1 = 0.08(0.7) = 0.056

Case 2

You do not have the disease and the test predicts that you have it

P_2 = 0.92(0.3) = 0.276

Then the probability that the test predicts that you have the disease is the union of both probabilities P1 and P2

P = P_1 + P_2\\\\P = 0.056 + 0.276\\\\P = 0.332

8 0
3 years ago
Jill can answer 50 math questions every 20 minutes.
Artemon [7]

Answer:

12- 30

36- 90

Step-by-step explanation:

if she can answer 50 in 20 mins then that means she is answering 2.5 questions in 1 min and then you must multiply 2.5 by the number of mins she has making it

12 x 2.5= 30

36 x 2.5= 90

3 0
3 years ago
Read 2 more answers
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