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Serjik [45]
4 years ago
5

Ann took

Mathematics
2 answers:
kow [346]4 years ago
3 0

How do you calculate the mean (average) ?
Isn't it just

  Mean = (total points of all the tests) divided by (number of tests)  ?

Let's work with that.

Multiply each side of that formula by (number of tests), and you have

       Total points of all the tests  =  (Mean) times (number of tests).

In this problem, you know the mean, and you know the number of tests,
so you can easily calculate the total points.


AlladinOne [14]4 years ago
3 0
Less than 600 but more thatn 525

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7 + 7x - (2x) + 3 if x = -4
frutty [35]

Answer:

-10

Step-by-step explanation:

7 + 7(-4) - (2(-4)) + 3

7 - 28 - (-8)+3

7 - 28 +8 +3

= -10

4 0
3 years ago
Read 2 more answers
Find the length of segment AB
SSSSS [86.1K]

Answer:

35

hope this helps you!!

6 0
3 years ago
According to a poll, 30% of voters support a ballot initiative. Hans randomly surveys 5 voters. What is the probability that exa
VMariaS [17]

The probability that exactly 2 voters will be in favor of the ballot initiative is 0.309.

<h2>Given</h2>

Number of voters who support ballot initiative = 30 % = 0.30

Number of voters who does not support this initiative = 1 - 0.30 = 0.70

Number of voters selected for Surveying = 5

<h3>What is probability?</h3>

The probability of success and failure remain the same throughout the trials.

The probability that exactly 2 voters will be in favor of the ballot initiative is given by;

If P denotes Success and Q denotes failure;

\rm = ^{5}C_2 \times (0.3)^2 \times (0.70)^3\\\\= 10 \times 0.09 \times 0.343\\\\= 0.309

Hence, the probability that exactly 2 voters will be in favor of the ballot initiative is 0.309.

To know more about Probability click the link given below.

brainly.com/question/20344726

3 0
3 years ago
I’m thinking of a number.if you multiply it by 6 and then add 10 you will get 58.what is my number?
Anna007 [38]

Answer:

your number is 8

Step-by-step explanation:

58-10=48

48 divided by 6=8

3 0
3 years ago
Solve for y<br>7y + 9 - 10y = -18<br>What is y simplify your answer as much as possible.
Tpy6a [65]
Y = 9

7y - 10y = -3y
bring down the 9 = -18 so

-3y + 9 = -18

9 - 9 = 0
- 18 - 9 = - 27

- 3y ÷ - 3 = y
- 27 ÷ -3 = 9

therefore y =9
7 0
3 years ago
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