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LenKa [72]
3 years ago
6

What is cos(3pi)? 1 0 -1 -2

Mathematics
2 answers:
Dafna1 [17]3 years ago
5 0
C: -1 is the answer
Lynna [10]3 years ago
5 0

Answer: -1

Step-by-step explanation:

you do the math

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Cloud [144]

Answer: 100

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Step-by-step explanation:

a) The mean of a normal distribution is also the median. Half the population will have values above the mean. Half of 200 is 100, so ...

... 100 students will have grades above 70%.

b) 84% is 14% above the mean. Each 7% is 1 standard deviation, so 14% is 2 standard deviations above the mean. The empirical rule tells you 95% of the population is within 2 standard deviations of the mean, so about 5% of students (10 students) got grades higher than 84% or lower than 56%. The normal distribution is symmetrical, so we expect about 5 students in each range.

... about 5 students will have grades above 84%.

3 0
3 years ago
Please answer to those<br><br> (a+2)(a+2)<br><br> (b+7)(b+7)<br><br> (c-3)(c-3)
oksano4ka [1.4K]

Answer:   1. a^2 + 4a + 4

                2. b^2 + 14b + 14

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5 0
3 years ago
Read 2 more answers
Please help me if you can. Please also write how you got the answer thank you.
vaieri [72.5K]

Answer:

The three numbers are 341, 342, and 343

Step-by-step explanation:

We start by assigning X to the first integer. Since they are consecutive, it means that the 2nd number will be X + 1 and the 3rd number will be X + 2 and they should all add up to 1026. Therefore, you can write the equation as follows:

(X) + (X + 1) + (X + 2) = 1026

To solve for X, you first add the integers together and the X variables together. Then you subtract three from each side, followed by dividing by 3 on each side. Here is the work to show our math:

X + X + 1 + X + 2 = 1026

3X + 3 = 1026

3X + 3 - 3 = 1026 - 3

3X = 1023

3X/3 = 1023/3

X = 341

Which means that the first number is 341, the second number is 341 + 1 and the third number is 341 + 2. Therefore, three consecutive integers that add up to 1026 are 341, 342, and 343.

341 + 342 + 343 = 1026

We know our answer is correct because 341 + 342 + 343 equals 1026 as displayed above.

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3 years ago
Feven can that you ply two wars will the same base, the new exponent is the product
lorasvet [3.4K]
3.3=3 since the denominator is greater than the numerator
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