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Phantasy [73]
3 years ago
5

Cheryl wants to find the number of hours seventh-graders do homework each week. There are 297 girls and boys in seventh grade. W

hich is the best way for Cheryl to get a representative sample without spending too much time?
Mathematics
1 answer:
Nadusha1986 [10]3 years ago
6 0

Answer:

The best way is for Cheryl to take a survey of a group of seventh graders and average that answer

Step-by-step explanation:

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Please hurry I need the answer
timama [110]

Answer:

4.12

Step-by-step explanation:

A^2+b^2=c^2 so 8^2+b^2=9^2 so 64+b^2=81 so b^2=17 so b=4.12

7 0
2 years ago
I need help i'm about to cry lol
grigory [225]

Answer and Step-by-step explanation:

The answer is the last answer choice.

g(x) = -(x + 2)^2 + 1

We don't even have to look at the numbers to tell that this is the correct answer. We look at what is being placed there.

The equation for a transformed function is:

f(x) = a(x-h)^2 + k

a determines the scale of the graph and whether the graph opens up or down.

h determines whether the graph shifts left or right.

k determines whether the graph shifts up or down.

We see that there is a -1 for a, which means the graph will be facing downwards. We see a 2 for where h is, but it really is a -2, and when it becomes a positive after simplifying, the graph will shift to the left.

k is a positive 1, so the graph will be shifted up 1 unit.

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5 0
3 years ago
Read 2 more answers
Solve for b.<br><br> 3 (b−4 )+ 5b = 44<br><br><br> b =
Sergeu [11.5K]
B=7
3(b-4)+5b=44
3b-12+5b=44
8b=44+12
8b=56
b=7
7 0
2 years ago
What is the slope of the linear equation below?
spayn [35]

Answer:

-5

Step-by-step explanation:

-5 is the slope because it is the multiplier of x

7 0
2 years ago
Find the coefficient of the x7y2term in the binomial expansion of (x+y)^9
statuscvo [17]

Answer:

36

Step-by-step explanation:

first, see the formula in the attached picture.

now, by applying that formula we get :

the coefficient of the x7y2 is :

9C7 = 36  (you can either use a calculator or just the algebraic formula)

8 0
2 years ago
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