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Volgvan
2 years ago
15

Which of the following algebraic expressions correctly represent the phrase fifteen less than twice a number

Mathematics
2 answers:
Vlad1618 [11]2 years ago
8 0

Answer:

15-(2×X)

Step-by-step explanation:

hope this is what you need

marishachu [46]2 years ago
8 0

Answer:

Step-by-step explanation:

i can't see the expressions, but your answer will be 2x-15

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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
Please help I need a answer on this question
mestny [16]
Your answer would be D.....

Why well because rising bike is green which is more time and more hrs, playing video games would be purple and green would be t.v so yeah

3 0
2 years ago
What is the directrix of the parabola defined by `(1)/(4)(y + 3) = (x − 2)^2`? A. `y = -(49)/(16)` B. `x = -(49)/(16)` C. `y = (
taurus [48]

The correct answer is y=−1/16

8 0
3 years ago
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What is the median of this data set? {10, 15, 12, 6, 2}
Vedmedyk [2.9K]

Hello there!

Median is the middle of the data set.

So, first we have to arrange it into proper numerical order (least to greatest).

2,6,10,12,15

Then, we look for the middle number.

It is 10, therefore 10 would be the median of this data set.

5 0
2 years ago
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A vending machine that serves coffee pours a varying amount of liquid into a cup with varying mass. Assume
bonufazy [111]

Answer:400

Step-by-step explanation:

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3 years ago
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