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Anuta_ua [19.1K]
3 years ago
14

What is the value of x, when 5+x+(−2)=−8?

Mathematics
2 answers:
Arlecino [84]3 years ago
8 0
5 + x + (-2) = -8
5 + x - 2 = -8
5 + x = -8 + 2
5 + x = -6
x = - 6 - 5
x = -11
nasty-shy [4]3 years ago
3 0
<span>5+x+(−2)=−8
5 + x - 2 = -8
x + 3 = -8
x = -11</span>
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What is 27% of 81 using the Decimals strategy?
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what is peter's number? "if you subtract 12 from my number and multiply the difference by -3, the result is -54
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7 0
3 years ago
a bag contains 10 white gold balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio
wolverine [178]

Answer:70 white golf balls and 42 striped golf balls

Step-by-step explanation:

First we find the ratio of white to striped balls

White golf balls = 10

Striped golf balls = 6

Ratio = 10/6 = 5/3

We are told a golfer wants to add extra 112 balls to the already 16 balls

And the ratio after adding 112 balls must stay the same

First we label the extra golf balls to be added x and y

x = white golf balls

y = striped golf balls

So since we know the 112 balls added is a combination of the extra white golf balls and striped golf balls, we create an equation for that, labelling it (1)

x + y = 112 (1)

And we are told that after putting these extra balls the ratio must remain the same, which is 5/3

which will be (10 white balls + x) divided by (6 striped ball + y) will be equals to 5/3

So we create another equation for this, labelling it (2)

(10+x)/(6+y) = 5/3 (2)

So we have two simultaneous equations

We pick (1)

x + y = 112

We either make x or y the subject of formula, I choose to make x the subject of formula, we label the equation (3)

take y to the other side, causing it to change to -y

x = 112 - y (3)

We then work with (2)

(10+x)/(6+y) = 5/3

We cross multiply

3(10+x) = 5(6+y)

We open the brackets

Making the equation simplified and labelling it (4)

30 +3x = 30 + 5y

Collect like terms

3x -5y = 30-30

3x -5y = 0 (4)

Remember from (3) we know that

x = 112 -y

So we put (3) in (4)

3(112 - y) - 5y = 0

Open bracket

336 -3y -5y =0

336 -8y = 0

Transfer -8y to the other side, changing to +8y

336 = 8y

Divide both sides by 8

336/8 = y

42 = y

y = 42

from (3) we know that x equals 112 - y

So we put y = 42 in (3)

x = 112 - y

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x = 70

So therefore number of white golfs balls and striped golfs balls to be added to keep the same ratio is 70 and 42 respectively

4 0
3 years ago
I think i found the right one but I let her go thru my things but she wont lemme go thru her stuff what does that mean :( I want
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Answer:

she is ether hiding something. or she just wants you to respect her privacy and she is trying to see how much you trust her so she can figure out how much she can trust you. i say you should just tell her you don't care what she does to just do what she would want and then let her actions decide whether she realy cares abought or respects yall's relationship. maby put it in kinder words than  did tho or you might just pi22 her off

Step-by-step explanation:

the 22 is ss i just dont want to get banned

8 0
3 years ago
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