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Maksim231197 [3]
3 years ago
9

PLZ HELP BRAIN FAM!!!

Mathematics
2 answers:
Mamont248 [21]3 years ago
8 0
Hello there!

So basically all you have to do is remove these signs that makes it complicated. However, you must know the rules in order to do so.

The rules says:

When you have plus sign * negative sign, the answer will carry the negative sign.

So let's start!

20 + (-3.05) + (-9.5)

= 20 - 3.05 - 9.5

= 16.95 - 9.5

= 7.45

I hope this helps and please let me know if you have questions about the answer.

Good luck with your studies!

Happy New Year!
RideAnS [48]3 years ago
5 0
It would be 7.45 since the -3.05 and the -9.5 together would equal -12.55 which subtracted from 20 would equal 7.45
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A tennis coach took his team out for lunch and bought 8 hamburgers and 5 fries for $24. The players were still hungry so the coa
g100num [7]

The cost of 1 hamburger is $ 2.5 and cost of 1 fries is $ 0.8

<h3><u>Solution:</u></h3>

Let "f" be the cost of 1 fries

Let "h" be the cost of 1 hamburger

<em><u>Given that, tennis coach took his team out for lunch and bought 8 hamburgers and 5 fries for $24</u></em>

8 x cost of 1 hamburger + 5 x cost of 1 fries = 24

8 \times h + 5 \times f = 24

8h + 5f = 24 -------- eqn 1

<em><u>The players were still hungry so the coach bought six more hamburgers and two more fries for $16.60</u></em>

6 x cost of 1 hamburger + 2 x cost of 1 fries = 16.60

6 \times h + 2 \times f = 16.60

6h + 2f = 16.60 ------ eqn 2

<em><u>Let us solve eqn 1 and eqn 2</u></em>

Multiply eqn 1 by 2

16h + 10f = 48 ------ eqn 3

Multiply eqn 2 by 5

30h + 10f = 83 -------- eqn 4

<em><u>Subtract eqn 3 from eqn 4</u></em>

30h + 10f = 83

16h + 10f = 48

( - ) ----------------------

14h = 35

<h3>h = 2.5</h3>

Substitute h = 2.5 in eqn 1

8(2.5) + 5f = 24

20 + 5f = 24

5f = 4

<h3>f = 0.8</h3>

Thus cost of 1 hamburger is $ 2.5 and cost of 1 fries is $ 0.8

5 0
3 years ago
6a*2-a-15 factoring and soulutions
eduard
6a(2)-a-15
=12a+-a+-15
Combine Like Terms:<span>=<span><span><span>12a</span>+<span>−a</span></span>+<span>−15</span></span></span><span>=<span><span>(<span><span>12a</span>+<span>−a</span></span>)</span>+<span>(<span>−15</span>)</span></span></span><span>=<span><span>11a</span>+<span>−15</span></span></span>Answer:<span>=<span><span>11a</span>−15</span></span> <span>

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3 years ago
Look to make 10 ones or 10 tens to solve 36+23+17
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I don't know what you are asking for the first part of the question but 36+23+17 = 76

Hope this helped a little! :)
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Use the order of operations to simplify 43/5 + 15 / 5 - 1/5.
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Step-by-step explanation:

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