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blagie [28]
3 years ago
12

The California Board of Education wants to know how 5th grade students are doing in math this year. They get a list of all 5th g

raders
in the state of California and look at the overall math grades of every 10th student on the list. Then they add the scores and divide to
get an average. What kind of sampling is this?
Mathematics
1 answer:
kolbaska11 [484]3 years ago
3 0

Answer: I think random sample

Step-by-step explanation:

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NEED HELP DUE TODAY!!
Anon25 [30]
I think the answer is B I got this right but it was for a completed grade so i’m not sure
7 0
3 years ago
Hi, can you help me to find (if passible) the complement andsupplement of the angle 3pi/ 4.
nika2105 [10]

Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees.

In radians this are

\begin{gathered} \frac{\pi}{2}\text{ for }90\degree \\ \pi\text{ for }180\degree \end{gathered}

To find the complement of 3π/4, subtract it by π/2

\frac{\pi}{2}-\frac{3\pi}{4}=-\frac{\pi}{4}

To find the supplement of 3π/4, subtract it by π.

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6 0
1 year ago
Chen writes down a two digit number. He finds that if he swaps the digits of the numbers around, the new number he creates is th
Anestetic [448]

Answer:

The original number is 72

Step-by-step explanation:

72 swapping digits around results in 27

1/3 of 72 = 24

24 + 3 = 27

5 0
3 years ago
Read 2 more answers
The number line is shown below. Which decimal is shown on the number line by point M?
Snezhnost [94]

Answer:

The number associated with point M is 5.64

Step-by-step explanation:

notice that there are 10 divisions marked with ticks in between 5.6 and 5.7. So that means that the difference between these two numbers : 5.7 - 5.6 = 0.1

has been subdivided into 10: 0.1/10 = 0.01

Therefore we can assign a real number to each of the ticks by adding successively increments 0.01 (starting from the left "5.6"), and learn which number corresponds to the point M.

Please see the attached image that illustrates this, and shows in red the number assigned to the tick where point M is located: 5.64

5 0
3 years ago
Does anyone have a clue lol. I know it has something to do with proportion but to me it makes 0 sense.
katrin [286]
57508.5 and 120, it gives you ounces for first one and then asks for pounds and it gives you the number of ounces per pound on the side so you do 920136/16 and for the second you do the same thing but with the number of feet per yard and you would do 360/3
8 0
2 years ago
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