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slava [35]
3 years ago
13

Add and subtract positive and negative decimals

Mathematics
1 answer:
Semenov [28]3 years ago
5 0
You would add and subtract them like a normal whole number, make sure to link up the decimals. You can use 0's as place holders if you need to. If you have two negatives your answer would be negative. When you subtract / add decimals just add them together. A positive plus a positive would be positive. If you have a positive plus a negative, subtract them and go with the sign of the greater number.
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Round 49.38 to nearest ten
Genrish500 [490]
49.38 to the nearest tenth is 49.4

Hope I helped!
8 0
4 years ago
Please help i need it
Dima020 [189]

Answer:

Mei is correct because -9 is to the left of -3 on the number line.

Step-by-step explanation:

This is because -9 is LESS than -3, when you add or subtract using negative numbers, such as 7-9, you get -2. However when you subtract 7-13, you get -6. Because you subtracted a greater number from 7, your answer is -6 is LESS than -2. This is the same with inequalities, greater negative numbers will always be smaller and smaller negative numbers will always be greater.

Hope this helps!

4 0
1 year ago
Solve the following system of equations algebraically. <br><br> y=2x-12<br> y=x+22+3
kirill [66]

Answer:

x=37

Step-by-step explanation:

because

y=y

or as, 2x-12=x+22+3

or as, 2x-x=12+22+3

or as, x = 37

4 0
3 years ago
5x-4y+-13 and 3x-4y+-11
drek231 [11]
5x + -4y = 13

Solving
-5x + -4y = 13

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4y' to each side of the equation.
-5x + -4y + 4y = 13 + 4y

Combine like terms: -4y + 4y = 0
-5x + 0 = 13 + 4y
-5x = 13 + 4y

Divide each side by '-5'.
x = -2.6 + -0.8y

Simplifying
x = -2.6 + -0.8y
Simplifying
3x + -4y + -11 = 0

Reorder the terms:
-11 + 3x + -4y = 0

Solving
-11 + 3x + -4y = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '11' to each side of the equation.
-11 + 3x + 11 + -4y = 0 + 11

Reorder the terms:
-11 + 11 + 3x + -4y = 0 + 11

Combine like terms: -11 + 11 = 0
0 + 3x + -4y = 0 + 11
3x + -4y = 0 + 11Combine like terms: 0 + 11 = 11
3x + -4y = 11

Add '4y' to each side of the equation.
3x + -4y + 4y = 11 + 4y

Combine like terms: -4y + 4y = 0
3x + 0 = 11 + 4y
3x = 11 + 4y

Divide each side by '3'.
x = 3.666666667 + 1.333333333y

Simplifying
x = 3.666666667 + 1.333333333y
3 0
3 years ago
Read 2 more answers
Please help asap....​
tino4ka555 [31]

Answer:

a d9x9x6xx0x8x7x7x

Step-by-step eaxplanation:

4 0
3 years ago
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