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madreJ [45]
3 years ago
6

1000 test scores are approximately normally distributed with a mean of 60 and a standard deviation of 8, if a grade of B is assi

gned to the scores between 68 and 76, how many scores will receive a grade of B?.
Mathematics
1 answer:
DIA [1.3K]3 years ago
8 0

Answer:

c

Step-by-step explanation:

I took the test

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⅒ (to decimal)<br><br>A. 0.1<br>B. 0.53<br>C. 0.10​
nydimaria [60]
⅒ (to decimal)

A. 0.1
7 0
2 years ago
Look at the picture and read the question. I think the answer is 137 degrees but I don't know how to get it. I need help lol. Th
slamgirl [31]

Answer:

That is a parallelogram so that opposite angles are equal.

10x -27  = 2x + 29

x = 7

and therefore those angles equal 43 degrees each

It is a parallelogram, so

angle V + W +X + Z = 360

we know that angle Y + angle W = 2 * 43 = 86 degrees

angle V + angle X = 360 -86 degrees

angle V + angle X = 274 degrees

angle V = 274 / 2 = 137 degrees

Step-by-step explanation:

8 0
3 years ago
Solve for g.<br> 3=9/-4 - 5
barxatty [35]

Answer:

g = -32

Step-by-step explanation:

3 = g/-4 - 5

Multiply both sides of the equation by -4

-12 = g + 20

Swap sides so that the variable terms are on the left hand side

g + 20 = -12

Subtract 20 from both sides

g = -12 - 20

Subtract 20 from -12 to get -32

g = -32

7 0
3 years ago
Write all factor pairs for the number 64
sladkih [1.3K]
A factor pair is two numbers that can be multiplied to get a number.
With any number, we know that 1*itself is a factor pair. So
1*64
The number in the ones place, 4, is even, so we know that 64 is a multiple of 2. Half of 64 is 32, so
2*32
To find out if 3 is a factor of 64, we can add 6+4. If the answer is a multiple of 3, then we know that the number itself is a multiple of 3. Because 6+4=10, and 10 is not a multiple of 3, we know that 64 is not a multiple of 3.
If 2 is not a factor of a number, then we know that 4 (2*2) cannot be a factor. Because 2 is a factor of 64, then 4 might be as well. To discover whether or not 4 is a factor of 64, we can look at the number above multiplied by 2 to equal 64 (32) and see if it divides by 2 evenly, or we can half 64 and then half it again. If either answer is a whole number, then we know that the answer*4 equals 64, and that 64 is a multiple of 4. Because half of 32 is 16, a whole number, we know that
4*16=64
Because 64 does not have a 0 or 5 in the one's place, we know that it cannot be a multiple of 5.
Because 64 is not a multiple of 3, we know it cannot be a multiple of 6, because 6 is 2*3.
I happen to be familiar with my times tables, so I can tell that the multiples of 7 are 63 and 70, but not 64. 
I don't know if 64 is a multiple of 8 off the top of my head, but I can count by 8s and see if 64 comes up: 8, 16, 24, 32, 40, 48, 56, 64, 72 - I can go on, but we can already see that 64 is a multiple of 8, so 8 is a factor of 64. If we count the number of 8s I can see that there are 8 of them when we get to 64. In other words, 
8*8=64 
Because we have gotten to a factor pair that is the same 2 number multiplied by each other (the square root) we know that we have found all factor pairs of 64. 


8 0
3 years ago
Read 2 more answers
An arithmetic sequence has its 5 th term equal to 22
blsea [12.9K]

Answer:

.................................

Step-by-step explanation:

7 0
3 years ago
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