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Anni [7]
2 years ago
14

Plz help its just math

Mathematics
2 answers:
uranmaximum [27]2 years ago
4 0

Answer:

The solution is -9.

Explanation:

→ 12(\frac{14}{2})-3³ +15 - 9²

→ 6(14)-27+15-81

→ 84-27+15-81

→ -9

Oksi-84 [34.3K]2 years ago
4 0

Answer:

-9

Step-by-step explanation:

use P.E.M.D.A.S. to solve (Parenthese, Exponents, Multiplication, Division, Addition, Subtraction)

12(14/2)-3^3+15-9^2

first, divide 14 by two

(14/2)=7

12(7)-3^3+15-9^2

then, simplify your exponents

3^3=27 (3*3*3)

9^2=81 (9*9)

12(7)-27+15-81

next, multiply 12 by 7

12*7=84

84-27+15-81

Finally, go through and solve the subtraction/addition problems

84-27=57

57+15=72

72-81=-9

Hope this Helps!

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Answer:

15

Step-by-step explanation:

8.25 minus 7.80 is 0.45 45 divided by 3 is 15 so the answer is 15

8 0
3 years ago
The probability of contamination in batch 1 of a drug (event A) is 0.16, and the probability of contamination in batch 2 of the
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We have:
Event A ⇒ P(A) = 0.16
Event B ⇒ P(B) = 0.09
Probability of event B given event A happening, P(B|A) = P(A∩B) / P(A) = 0.12

By the conditional probability, the probability of event A and event B happens together is given by:
P(B|A) = P(A∩B) ÷ P(A)
P(B|A) = P(A∩B) ÷ 0.16
0.12 = P(A∩B) ÷ 0.16
P(A∩B) = 0.12 × 0.16
P(A∩B) = 0.0192

When two events are independent, P(A) × P(B) = P(A∩B) so if P(A∩B) = 0.0192, then P(B) will be 0.0192 ÷ 0.16 = 0.12 (which take us back to P(B|A))

Since P(B|A) does not equal to P(B), event A and event B are not independent.

Answer: <span>Events A and B are not independent because P(B|A) ≠ P(B)</span>

4 0
3 years ago
F(x)=3x+10x and g(x)=2x-4, find (f+g)(x)
djyliett [7]

Answer:

15x - 4

Step-by-step explanation:

Add both of the equations together.

f(x) + g(x)

(3x + 10x) + (2x -4)

Then, combine like terms

3x + 2x + 10x = 15x

15x - 4

8 0
3 years ago
Read 2 more answers
a researcher finds 200 women over 50 who exercise regularly, pairs each with a woman who has a similar medical history but does
Shtirlitz [24]

A researcher finds 200 women over 50 who exercise regularly, pairs each with a woman who has a similar medical history but does not exercise, then follows the subjects for 10 years to see which group develops more cancer. this is a prospective study.

<h3>Define prospective study.</h3>

Individuals are tracked over time in prospective studies, and information is gathered about them as their characteristics or circumstances change. Prospective studies include things like birth cohort studies. In retrospective research, people are sampled, and details about their past are gathered. Always after a predetermined number of incidents, the analysis takes place. The fact that individuals were enrolled and baseline data was obtained before any subjects experienced an outcome of interest identifies a study as prospective.

Given,

A researcher finds 200 women over 50 who exercise regularly, pairs each with a woman who has a similar medical history but does not exercise, then follows the subjects for 10 years to see which group develops more cancer. this is a ...

Prospective study

To learn more about prospective study, visit:

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3 0
1 year ago
Jennifer makes 1.7 liters of lemonade. If she pours 3 tenths of the lemonade in a glass, how many liters of lemonade are in the
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Answer:

0.51 liters in the glass

Step-by-step explanation:

Given

Litres = 1.7L

Pour= \frac{3}{10}th

Required

Determine how many liters in the glass

To do this, we simply multiply the fraction poured by the total.

So, we have:

Poured = \frac{3}{10} * 1.7

Poured = \frac{3* 1.7}{10}

Poured = \frac{5.1}{10}

Poured = 0.51

<em>There will be 0.51 liters in the glass</em>

8 0
2 years ago
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