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ANTONII [103]
3 years ago
9

Which expression is equivalent to 142 +35 - 2142

Mathematics
1 answer:
OLga [1]3 years ago
8 0
The last one on the bottom
7 (2x +5 -3y)
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I ONLY need HELP on number 3 what does it mean for me to do?? Thank You All in Advance!!!!!!
Sladkaya [172]
3(5+7) is the problem you are looking at. To figure it out, you can use properties. On the right side of the equals sign, it shows a property you can use to do the problem. In this case, they are distributing.
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3 years ago
HELPPPPPPPPPPPPPPPPPPP ASAP SOMEONE PLEASE! i need to know if im correct
Step2247 [10]
Sadly your incorrect. The answer is (-1,5)
4 0
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Suppose it costs $ 20 per day and $ 0.12 per mile to rent a car. What is the total bill if the car is rented for 3 days and is d
DochEvi [55]
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5 0
3 years ago
Depreciation
hammer [34]

Answer:

a) y=-3950\cdot{x}+21500

b) f(x) =21500\cdot{(0.7953)^x}

c) Year 1: Linear $17550, exponential $17099

Year 4: Linear $5700, exponential $8601

d) Exponential model

e) The linear model depreciates the value quicker than exponential model long term around 4 years

Step-by-step explanation:

a) At year 0 the price is 21500 and at year 2 the price is 13600

WE can use points (0,21500) and (2,13600)

We can determine the gradient

m=(13600-21500)/(2-0)=-3950

We can use the point slow formula:

y-y_1=m\cdot{(x-x_1)}

y-21500=-3950\cdot{(x-0)}

y=-3950\cdot{x}+21500

b) We can use the following equation:

f(x) =a\cdot{(1+r)^x}

f(x) is the depreciation value after amount of time t, a is the new value, r is the rate of depreciation and x is the time.

13600=21500\cdot{(1+r)^2}

r=-0.2047

The depreciation rate is 20.47% and is negative because it decreases the new value of the car

c) Year 1:

y=-3950\cdot{1}+21500=17550

f(x) =21500\cdot{(0.7953)^1}=17099

Year 4:

y=-3950\cdot{4}+21500=5700

f(x) =21500\cdot{(0.7953)^4}=8601

d) Year 2

y=-3950\cdot{2}+21500=13600

f(x) =21500\cdot{(0.7953)^2}=13598

3 0
3 years ago
The answer I honestly don’t get this
Alex
The answer is probably 1018 cm3
3 0
3 years ago
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