Answer:
8×10⁸
Step-by-step explanation:
2.25×10⁸ +3.50×10⁸ +2.25×10⁸ = (2.25 +3.50 +2.25)×10⁸ = 8×10⁸
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Your calculator can do this for you and display the result in scientific notation.
One company wants $10 per 3.5 hours, so they want 10 / 3.5 ≈ 2,86 dollars per hour (after rounding to the closest hundreths).
Second company wants $1.25 per half an hour, so they want 2 * 1,25 = 2,50 dollars per hour.
The unit rate is 2,86:2,50
Answer:
1. x = 24
2. r = -7
3. x = - 110
4. x = 10/3
Step-by-step explanation:
1. x/6 = 4 => x = 6 · 4 = 24
2. r/7 = -1 => r = -1 · 7 = -7
3. -x/11 = 10 => -x = 11 · 10 = 110 => -x = 110 / ·(-1)
Now we will multiply the both sides with (-1) and get
x = -110
4. x/4 = 5/6 It's the same as proportion x : 4 = 5 : 6
Now we will multiply external and internal members and get
6 x = 4 · 5 => 6 x = 20 => x = 20/6
Now we reduce the numerator and the fractional denominator with the number two and get
x = 10/3
God with you!!!
Answer:
A
Step-by-step explanation:
have a good day!