Answer:
To gather information about the validity of a new standardized test for tenth-grade students in a particular state, a random sample of 15 high schools was selected from the state. The new test was administered to every 10th -grade student in the selected high schools . What kind of sample is this ?
Step-by-step explanation:
Answer:
9.958
Step-by-step explanation:
The thousandths spot is where the 8 is so you round 8 with the number behind it 1. Since 1 is below 5, you keep 8 the same and get rid of the 1.
Answer:
you go up by .75 each time per pound so it would be 5 pounds.
hope this helps!!
Answer:
![A= \frac{400}{21} B=\frac{580}{21}](https://tex.z-dn.net/?f=A%3D%20%5Cfrac%7B400%7D%7B21%7D%20B%3D%5Cfrac%7B580%7D%7B21%7D)
Step-by-step explanation:
You just have to remember the rules of the triangles in order to be able to solve this:
The rule of trigonometry that you will have to use is a is similie to 20, B is simile to 29 and 20 is 20.
So you would have to put them like this:
![\frac{21}{20}= \frac{20}{a}= \frac{29}{b}](https://tex.z-dn.net/?f=%5Cfrac%7B21%7D%7B20%7D%3D%20%5Cfrac%7B20%7D%7Ba%7D%3D%20%5Cfrac%7B29%7D%7Bb%7D)
You just have to clear the equations for A and B:
![a=\frac{20*20}{21}=\frac{400}{21}\\ b=\frac{29*20}{21} =\frac{580}{21}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7B20%2A20%7D%7B21%7D%3D%5Cfrac%7B400%7D%7B21%7D%5C%5C%20%20b%3D%5Cfrac%7B29%2A20%7D%7B21%7D%20%3D%5Cfrac%7B580%7D%7B21%7D)
So that would be your answer.
Hey buddy I am here to help!
5. y = ax + b
-5 = a*4 + b
-5 = 4a + b
If we take a as -2
-5 = 4*-2 + b
-5 = -8 + b
b = -5 - (-8)
b = -5 + 8
b = 3
so... a = -2 and b = 3
6. (i) y = 5x - 2
(1,7)
y = 7 & x = 1
7 = 5*1 -2
7 = 5 - 2
7 = 3
so this point (1,7) is wrong
(ii) y = 5x -2
we can take any value for x...
e.g. x = 2
y = 5*2 - 2
y = 10 -2
y = 8
SO answer in this case would be (2,8)
Plz mark my answer brainliest