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adoni [48]
3 years ago
13

How to subtractat a positive and negative rational number

Mathematics
1 answer:
Anna71 [15]3 years ago
5 0

Answer:

<em>75</em>

Step-by-step explanation:

Subtracting a number means adding the opposite.

The opposite of a number is the number you obtain by just changing the sign.

The opposite of 5 is -5. The opposite of 100 is -100. The opposite of -4.5 is 4.5. The opposite of 0 is 0. Zero is the only number that is equal to its opposite.

You need to subtract -45, so add the opposite of -45 which is 45.

30 - (-45) = 30 + 45 = 75

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Nancy sold a house for $225,900 and earned 4% commission. How much did Nancy earn for the sale of this house?
timurjin [86]

Answer:

$9,036.00

Step-by-step explanation:

225900×.04

4%= .04

4. Move decimal twice to the left=.04

3 0
3 years ago
A calculator screen shows a number in scientific notation as 4.67e-8 write this number in standard form
Amanda [17]

Answer:

467 000 000

Step-by-step explanation:

4.67e-8 is rewritten as 4.67 x 10^-8.

Negative -> decimal with lots of places, Positive -> big, big number

Move the decimal place right 8 times so you end up with a small decimal.

4.67 -> 467000000

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3 years ago
Help I’ll mark brainliest
lakkis [162]

Answer:

12.04m = l

Step-by-step explanation:

We can use the Pythagorean theorem

a^2 + b^2 =c^2

where a and b are the legs and c is the hypotenuse

12^2 + 1 ^2 = l^2

144 + 1 = l^2

145 = l^2

Take the square root of each side

sqrt(145) = sqrt(l^2)

12.04159458 = l

To the nearest hundredth

12.04m = l

5 0
3 years ago
Read 2 more answers
Add 7 to me. Then subtract 10. If you subtract 5 and then add 9, you get 14. What number am I?
Vesna [10]

Answer:

your answer is 13.

am I correct.

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3 years ago
Three divided by four
muminat

Answer:

0.75

Step-by-step explanation:

3/4=0.75

Hope this helps! :)

8 0
3 years ago
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