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vladimir2022 [97]
3 years ago
10

(Need asap plz)

Mathematics
2 answers:
Vikentia [17]3 years ago
7 0

Step-by-step explanation:

add up all of the numbers in the five groups then divide the numbers by the number of numbers you have for example if the sum of all of those numbers is let's a 25 and you have 5 numbers you'll divide 25 by 5 and your men will be 5:00 and if the sum of the numbers was 30 and you have six numbers you'll / 30by6 then your answer then the mean will be six

Citrus2011 [14]3 years ago
5 0

Answer:

I don't know which school you are asking for, so here are all of them, followed by the general mean of all the schools.

a: 1.7

b: 4.7

c: 3.9

d: 5.3

e: 4.5

gen: 4

Step-by-step explanation:

This is easiest to solve with a calculator.

When finding the mean, you need to add all the numbers together, then divide by how many numbers you added.

Let's say that you have the numbers 2, 5, and 8. You add them together to get 15, then divide 15 by 3. The mean is 5.

With your problem, the general mean of all 5 schools is 4.

Hope that this helps!

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A lady buys 20 trinkets at a yard sale.
Katen [24]

Answer:

Lady purchased 12 trinkets costing $0.30 each and 8 trinkets costing $0.65 each.

Step-by-step explanation:

A lady buys total number of trinkets = 20

Cost of each trinket is either $0.30 or $0.65.

Let the number of trinkets is x she purchased for $0.30 and y for $0.65

Then x + y = 20 --------(1)

Since she spends total amount = $8.80

Then the equation will be

0.30x + 0.65y = 8.80 ---------(2)

We replace x = (20 - y) from equation (1) to equation (2)

0.30(20 - y) + 0.65y = 8.80

6 - 0.30y + 0.65y = 8.80

0.35y + 6 = 8.80

0.35y = 8.80 - 6

0.35y = 2.80

y = \frac{2.80}{0.35}

y = 8

Now we put y = 8 in equation (1)

x + 8 = 20

x = 20 - 8

x = 12

Therefore, lady purchased 12 trinkets costing $0.30 each and 8 trinkets costing $0.65 each.

7 0
3 years ago
Find the measure of angle Y.<br><br><br> A. 115°<br><br> B. 65°<br><br> C. 43°<br><br> D. 22°
Gala2k [10]

Answer:

The answer is B. 65

Step-by-step explanation:

add 43 and 22, then subtract that by 180 and that will give you 115. Then subtract 180 and 115 and the answer is 65.

3 0
3 years ago
Read 2 more answers
The tree in Kira’s backyard is 9 meters high. How high is it in centimeters?
Serggg [28]

Answer:

900

Step-by-step explanation:

1 meter = 100 centimeters

9 meters=?

9×100÷1 =900

6 0
3 years ago
Read 2 more answers
So i need help with this question
lawyer [7]

Answer:

multiply both sides by 8

Step-by-step explanation:

I don't really know why I just know lol hope this helps

8 0
3 years ago
The product of a number and 4 increased by 16 is -2
sesenic [268]
4x+16=-2

Subtract 16 from both sides
4x=-18

Divide both sides by 4
x=-18/4
x= -9/2

Final answer: x=-9/2
6 0
3 years ago
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