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serg [7]
4 years ago
10

-9 - (-a) = -2 show your work please

Mathematics
1 answer:
Triss [41]4 years ago
4 0
-9 +a =-2 Distribute that negative into the a
a=-2 + 9 Then you do the opposite sign
which mans since the nine was negative you would add it to the negative two

your answer is
a=7
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Find the value for m<br> -10 + 59 = 5m = 7 + 3m
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-10+59=5m=7+3m

49=5m=7+3m

49-7=5m-3m

m=42/2

m=21

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Solve the following equation please!!!
Ivanshal [37]

Answer:

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How can you turn 20/10 into a mixed number
Morgarella [4.7K]
Divide

20/10 = 2

10*2 = 20

There are 2 wholes in 20/10

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3 years ago
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Twice the first number is eleven more than the sum of the other two numbers. The sum of twice the first number and three times t
lidiya [134]
Well first you have to make variables for each number.
1st - x
2nd - y
3rd - z

first sentence says twice first number so 2x. is means equals so =. eleven more than sum of the other two numbers. sum of other two numbers is (y + z) and eleven more than that is (y + z) + 11. So so this sentence says:
2x = (y + z) + 11

second sentence says sum of twice the first and three times third. twice first is 2x and three times third is 3z. their sum would be (2x + 3z). It it says is one more than second number. So = (y + 1). So so this means:
(2x + 3z) = (y + 1)

third sentence says second number (y) is is equal to sum of first and third (x + z). so;
y = (x + z)

now for the work.

We we can easily solve for a by subtracting the first 2 equations. the way to subtract 2 equations is by subtracting one left side of equal sign from the other equations left side and then doing the same with the right side.

So we will subtract the 1st and second equations we made.
So so left sides would be
2x - (2x + 3z)
2x - 2x - 3z
-3z

right side would be:
y + z + 11 - (y + 1)
y + z + 11 - y - 1
z + 10

now put the sides with an equal sign
-3z = z + 10
-4z = 10
z = -2.5

now we can plug in z into the equations and subtract second and third equations. But but we will subtract opposite sides. So so left minus right and right mi is left after we plug in z:
(2x + 3 (-2.5)) - (x + (-2.5))
2x - 7.5 - x + 2.5
x - 5

other one would be
(y + 1) - y
1

So so put an equal sign and get:
x - 5 = 1
x = 6

now plug x and x into 3rd equation
y = x + z
y = 6 + (-2.5)
y = 3.5

now we have values. You can check answer by plugging values into other 2 equations
6 0
4 years ago
a man has been driving a second hand car for the past four years. over these four years he managed to save 16% as a deposit of t
Ksenya-84 [330]

Answer:

$120,000

Step-by-step explanation:

Given that

The price of the new car is $750,000

And, the saving percent is 16%

We need to find out the saving amount for the deposit

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= $750,000 × 16%

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We simply multiply these two to each other so that the saving amount could come

7 0
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