We can use the number line as a model to help us visualize adding and subtracting of signed integers. Just think of addition and subtraction as directions on the number line. There are also several rules and properties that define how to perform these basic operations.
To add integers having the same sign, keep the same sign and add the absolute value of each number.
To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest.
Subtract an integer by adding its opposite.
Answer:
tsu and hgi
Step-by-step explanation:
Answer:
= 1.22 × 109
(scientific notation)
= 1.22e9
(scientific e notation)
= 1.22 × 109
(engineering notation)
(billion; prefix giga- (G))
= 1220000000
<span>(real number)
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Answer:
= 2.87 × 10-2
(scientific notation)
= 2.87e-2
(scientific e notation)
= 28.7 × 10-3
(engineering notation)
(thousandth; prefix milli- (m))
= 0.0287
<span>(real number)</span>
The distance is 3, because 7 - 4 = 3.
Answer:
∠ 2 = 45°
Step-by-step explanation:
∠ 1 and ∠ 2 are same- side interior angles and are supplementary, thus
∠ 2 = 180° - ∠ 1 = 180° - 135° = 45°
