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erica [24]
3 years ago
9

*7.NS.1: Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers;

Mathematics
1 answer:
aleksandrvk [35]3 years ago
5 0

Answer:

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Step-by-step explanation:

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A car, originally valued at 70,000 in 2006 depreciates exponentially at a rate of 4% each year. Round the expected value of the
lora16 [44]

Answer:

$42,890

Step-by-step explanation:

The standard form for an exponential equation is

y=a(b)^x

where a is the initial amount value and b is the growth rate or decay rate and t is the time in years.  Since we are dealing with money amounts AND this is a decay problem, we can rewrite accordingly:

A(t)=a(1-r)^t

where A(t) is the amount after the depreciation occurs, r is the interest rate in decimal form, and t is the time in years.  We know the initial amount (70,000) and the interest rate (.04), but we need to figure out what t is.  If the car was bought in 2006 and we want its value in 2018, a total o 12 years has gone by.  Therefore, our equation becomes:

A(t)=70,000(1-.04)^{12} or, after some simplification:

A(t)=70,000(.96)^{12}

First rais .96 to the 12th power to get

A(t) = 70,000(.6127097573)

and then multiply.

A(t) = $42,890

8 0
3 years ago
State the inverse of x5
sashaice [31]
The inverse of multiplying by five is dividing by 5.
3 0
3 years ago
If the probability that a bird will lay an egg is 75%, the probability that the egg will hatch is 50%, and the probability that
garik1379 [7]

Answer: (A) 30%

Step-by-step explanation:

Given : The probability that a bird will lay an egg =0.75

The probability that the egg will hatch  =0.50

Now, the probability that the egg will lay an egg and hatch = 0.75\times0.50

Also,The probability that the chick will be eaten by a snake before it fledges =0.20

Then, the probability that the chick will not  be eaten by a snake before it fledges : 1-0.20=0.80

Now, the probability that a parent will have progeny that survive to adulthood will be :-

0.75\times0.50\times0.80=0.30=30\%

Hence, the probability that a parent will have progeny that survive to adulthood =  30%

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3 years ago
If you multiply or divide both sides of an inequality by a negative number, you need to______the inequality sign.
bezimeni [28]

If you multiply or divide both sides of an inequality by a negative number, reverse the direction of the inequality sign!

5 0
3 years ago
Which answer choice will correctly complete the sentence?
expeople1 [14]

Answer: Option (1)

Step-by-step explanation:

3 0
2 years ago
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