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3 years ago

Please help would mean a lot :?)

Mathematics

2 answers:

Ray Of Light [21]3 years ago

5 0

A I think I don't know what your doing

ankoles [38]3 years ago

3 0

The answer is D

To find the mean of something, you have to add up all the numbers and then divide the sum by the amount of numbers you have.
$- 10 + - 30 + - 25 + 15 + 35 = \\ - 15 \\ - 15 \div 5 = 3$

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aleksandrvk [35]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Solve each equation 6=1-2n+5

kirill115 [55]

2n+5=6+1
2n=7-5
n=2/2
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4 0

3 years ago

I don't understand???? I'll give the brainliest!!!!!

olasank [31]

Answer:

Option A is the correct option.

Step-by-step explanation:

${a}^{2} + {b}^{2} - 2ab \: \cos \: c \: = {c}^{2} \\ a = 4 \\ b = 5 \\ c = 2 \\ \\ 2ab \: cos \: c = {a}^{2} + {b}^{2} - {c}^{2} \\ \: \: \: \: \: \: \: \: = {(4)}^{2} + {(5)}^{2} - {(2)}^{2} \\ \: \: \: \: \: \: \: \: = 16 + 25 - 4 \\ \: \: \: \: \: \: = 41 - 4 \\ \: \: \: \: \: \: = 37$

Hope this helps...

Good luck on your assignment...

6 0

3 years ago

I need help with this plz

Ksju [112]

Answer:

The correct answer is D. 10.

Step-by-step explanation:

If Brandy earns 2 stars for every goal, and she scored 8 goals, then we need to multiply 8 by 2.

8 x 2 = 16

She looses 1/2 a star for every miss, and she missed the goal 12 times. Therefore, we need to multiply 1/2 by 12.

12 x 1/2 = 6

Therefore, Brandy lost 6 stars.

Now, we need to subtract the amount of stars Brandy earned by the amount that she lost.

16 - 6 = 10

Therefore, the correct answer is D. 10.

Hope this helps! :D

5 0

3 years ago

In a chemical compound there are three parts zinc for every 16 parts copper by mass. A piece of the compound contains 320 g of c

Orlov [11]

<span>Total mass contains 320g copper. How many parts of 16g copper are there of the total mass of 320g copper? 320/16 = 20. There are 20 portions of 16g copper. (320/16) * 3 = 60g There are 60g of zinc in the compound.</span>

6 0

3 years ago