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Ksivusya [100]
3 years ago
13

Help please and please give a detailed answer

Mathematics
1 answer:
Natali [406]3 years ago
8 0
The answer is 18
Working out:
1 1/2 x 4 =6
6 x 3=18
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Perform the indicated operation and write the answer in the form a + bi.
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Answer: .

Step-by-step explanation:

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3 years ago
A box contains four red balls and eight black balls. Two balls are randomly chosen from the box, and are not replaced. Let event
Leviafan [203]

Answer:

P(B) = 8/12

P(R | B) = 4/11

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Step-by-step explanation:

I just got it right on edge 2020. Good luck with school!!

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3 years ago
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Suppose that cos = 12/13 what is sin what is cos 2
riadik2000 [5.3K]
First, some housekeeping:

cos = 12/13 is incomplete; "cos" must have an argument (input).

cos x = 12/13 is fine; here "cos" has the argument (input) x.

Given that cos x = 12/13, find sin x.  To do this, we'll need to find the length of the opposite side, given that the hypo length is 13 and the adj. side length is 12.

12^2 + opp^2 = 13^2, or            opp^2 = 169-144 = 25.

Then the opp side could be either 5 or -5.  Let's assume that it's +5, and that angle x is in the first quadrant.

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cos 2 is an entirely different kind of problem.  Here you are told what the argument (input) to the cosine function is (it is 2, which here means 2 radians).

Using a calculator:  cos 2 = -0.416.  Note that the angle 2 rad is in QII, which is why the "adjacent side" is negative and also why the cos of 2 is negative.
8 0
3 years ago
4 is 1/4 of what number? Plzzzzzz help
WARRIOR [948]

Answer:

16

Step-by-step explanation:

to reverse the division  meaning the fraction, we multiply 4 by 4:

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i hope this helps u pls give a brainliest and a thx ;)

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3 years ago
What is 12+ n means in verbal expression
Mandarinka [93]

the sum of 12 and a number/n

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3 years ago
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