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Sergio [31]
3 years ago
5

Find the difference: -7 -− (-2) = A 9 B -9 C 5 D -5

Mathematics
1 answer:
AveGali [126]3 years ago
8 0

Answer: B. −9

Step-by-step explanation: -7--(-2)

−7+−2

−9

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A company purchased 400 units for $20 each on January 31. It purchased 520 units for $26 each on February 28. It sold a total of
kvv77 [185]

Answer:

there is $9360 worth of invertory left as of december 31

Step-by-step explanation:

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3 years ago
The current population of a town is 10,000 and its growth in years can be represented by P(t) = 10,000(0.2)^t, where t is the ti
DiKsa [7]

Answer:

1) 20%

2) Choice a.

Step-by-step explanation:

P(t)=10000(0.2)^t

1) P(0) is the population initially.

P(1) is the population after a year.

\frac{P(1)}{P(0)} represents the population increase factor.

So let's evaluate that fraction:

\frac{P(1)}{P(0)}

\frac{10000(0.2)^1}{10000(0.2)^0}

\frac{0.2^1}{0.2^0}=\frac{0.2}{1}=0.2

0.2=20%

2) Let's figure out the population growth in terms of months instead of years.

P(t)=10000(0.2)^{t}

We want t to represent months.

A full year is 12 months, in a full year we have that P(1)=10000(0.2)^1=10000(0.2)=2000

So we want a new P such that P(12)=2000 since 12 months equals a year.

Let's look at the functions given to see which gives us this:

a) P(12)=10000(0.87449)^{12}=2000 \text{approximately}

b) P(12)=10000(0.87449)^{12(12)}=0 \text{ approximately}

c) P(12)=10000(0.87449)^{\frac{1}{12}}=9889 \text{approximately}

d) P(12)=10000(0.87449)^{12+12}=400 \text{approximately}

So a is the function we want.

Also another way to look at this:

P(t)=10000(.2)^t where t is in years.

P(t)=10000(.2^\frac{1}{12})^t where t is in months.

And .2^\frac{1}{12}=0.874485 \text{approximately}

8 0
3 years ago
Vincente slept 5 more hours this past weekend than Dorinda. Dorinda only slept half as many hours this weekend as Sade.
Ahat [919]

Answer/Step-by-step explanation:

<em><u>*An average person on Earth needs 8.5 hours of sleep each night*</u></em>

1. V - 5 = D

2. D ÷ 2 = S

3. S + 5 = V

<em><u /></em>

4 0
2 years ago
An online bookstore sells all paperback books for x dollars each. Aidan bought 7 paperback books and spent $3.95 on shipping. Ni
rusak2 [61]

Answer:

Here's the answer

Step-by-step explanation

y= 18x+9.20

8 0
2 years ago
I need help with these questions. PLEASE HELP
Svetach [21]
The answers are MK and PY and AH.
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3 years ago
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