Answer:
1 and 1/6 cups of flour
Step-by-step explanation:
We need the fractions to have common denominators so multiply 1/2 by 3 and 2/3 by 2 to get the common denominator of 6.
1/2 x 3/3 = 3/6
2/3 x 2/2 = 4/6
Add the two fractions
3/6 + 4/6 = 7/6 or 1 & 1/6
Answer:
Step-by-step explanation:
Usually, this wording means the decrease is proportional to the current price, characteristic of an exponential function.
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The decay factor is 1-(decay rate), so is 1-0.15 = 0.85. After 3 years, the value has been multiplied by this factor 3 times:
$50×0.85³ ≈ $30.71 . . . . cost in 3 years
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<em>Comment on percent per year</em>
Less often, the indicated decrease is intended to be <em>that percentage of the original price</em>. The result is that the price decreases by a constant amount each year, a linear decrease. This condition most often arises in conjunction with figuring depreciation in value for tax or accounting purposes.
The upshot is that you always need to be careful to understand what the base of a percentage is intended to be.
Answer:
40 mph.
Step-by-step explanation:
Hope I helped!
x-5=speed of car B
x=speed of car A
distance=speed times time
(x-5)(4.5)=(x)(4)
4.5x-22.5=4x
Multiply both sides by 2 to get rid of the decimals.
9x-45=8x
Subtract 8x from each side.
x-45=0 9 (A)
Add 45 to both sides.
x=45
Speed of car A=45 mph
Speed of car B=40 mph
