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sweet [91]
3 years ago
14

What is the value of the expression 12.25 + (-17.75)?

Mathematics
1 answer:
Reika [66]3 years ago
7 0

Answer:

-5.5

Step-by-step explanation:

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The number of subscribers to a streaming video service doubles each week.
Ilya [14]

Answer:

Step-by-step explanation:

This is an exponential equation that is solved by taking the natural log of both sides.  The equation is

f(x)=2^x

If we are looking for x when f(x) = 64, then

64=2^x

Take the natural log of both sides:

ln(64)=ln(2^x)

The rules of logs allows us to bring the x down in front:

ln(64)=xln(2)

Divide both sides by ln(2) to get:

\frac{ln(64)}{ln(2)}=x

Do this on your calculator to get that x = 6.

You could also have just gone right to your calculator and started raising 2 to consecutive powers starting at like 3 or 4 to eventually get that 2 to the 6th power is equal to 64, but for the basics of solving log equations, you need to know how to do this.

5 0
3 years ago
Read 2 more answers
For a biology project, you measure the weight in grams and the tail length in millimeters of a group of mice. The correlation is
olga nikolaevna [1]

Answer:

Step-by-step explanation:

Given that for a biology project, you measure the weight in grams and the tail length in millimeters of a group of mice.

The correlation is r = 0.9

If you had measured tail length in centimeters instead of millimeters, what would be the correlation?

For this we must understand the meaning of correlation and formula

Correlation is a measure of linear association between the two variables and always lie between -1 and 1

This is got by dividing covariance of (x,y) by product of std deviation of x and y

So because we changed the units of length correlation coefficient would not change.

It would remain the same as 0.90

8 0
3 years ago
Which is an equivalent form of the expression 1800(1.2)^-t
ololo11 [35]

Answer:

1800(5/6)^t

Step-by-step explanation:

I don't see any answer choices, but this would be another form if it is listed. The negative exponent means that you get the reciprocal of the fraction (in this case 1.2). This turns 1.2 into (1/1.2), which is equivalent to 5/6.

7 0
1 year ago
Copy and complet the table compare the values of 2^x-2 with the values of 2^x-2
Vladimir79 [104]

#2^(x-2)

For 2

  • 2^(2-2)=2⁰=1

For 3

  • 2^(3-2)=2

For 4

  • 2^(4-2)=2²=4

For 5

  • 2^{5-2}=2³=8

For 6

  • 2^{6-2}=2⁴=16

#2^x-2

For 2

  • 2²-2=2

For 3

  • 2³-2=6

For 4

  • 2⁴-2=14

For 5

  • 2⁵-2=30

For 6

  • 2⁶-2=62
3 0
2 years ago
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What is the solution set of the equation 3x^2-34x-24=0?
scoray [572]
X= 6/17or the alternative form is 0.352941
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