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ki77a [65]
3 years ago
15

You track the temperature from the time you eat lunch to the time you go to bed. You find that it drops 4 degrees each hour for

8 hours. which expression best show the change in temperature?
A. -4 x -8

B. 4 x 8

C. -4 x 8

D. 4 + 8
Mathematics
1 answer:
Aneli [31]3 years ago
7 0
I believe its C.-4 x 8 :) 

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does the following represent a function that can be represented using the equation =+? how would do you know
scoray [572]

Answer: It's not a function because the line is curved, and it has an exponent in the equation which makes the line curved instead of straight which will make x repeat.

3 0
2 years ago
pam deposited $6,900 in a savings account with simple interest. Four months later she had earned $23 in interest. What was the i
3241004551 [841]

Answer:

1%

Step-by-step explanation:

We use the simple interest equation of A=P(1+rt).

A-the total amount with interest earned

P-the initial amount or principal

r-rate

t-time in years

We substitute the values P=6900, A=6923, and t=0.33 since 4 months divided by 12 months is 0.333 years. We then solve for r.

6923=6900(1+r(0.33))\\6923=6900(1+0.33r)\\\frac{6923}{6900} =\frac{6900(1+0.33r)}{6900} \\1.0033=1+0.33r\\1.0033-1=1-1+0.33r\\0.0033=0.33r

Our final step is to divide both sides by 0.33.

\frac{0.0033}{0.33} =\frac{0.33r}{0.33} \\0.01=r

This is the decimal of the rate. We convert to a percentage by multiplying by 100. 0.01(100)=1%.


5 0
3 years ago
Help please. math isn't my strong suit.
Neporo4naja [7]
What are you needing help with 

6 0
3 years ago
What is the point-slope equation of the line with slope -12 that goes through the point (5,3)
nikklg [1K]

Answer:

the correct answer is c

Step-by-step explanation:

because we use formule when we write a equation

6 0
3 years ago
Please please help i beg ill give brainlist
Marta_Voda [28]

Answer:

a_{15}=-268,435,456

Step-by-step explanation:

First, find what factor each term is multiplied by to get to the next. To do this, divide the second term by the first, the third term by the second, etc

4\div-1=-4\\-16\div4=-4\\64\div-16=-4

The common factor is 4. Using that, you can now write the equation for the geometric sequence in the form of:

a_n=a_1x^{n-1}

It looks scarier than it is. aₙ is the nth term in the sequence, x is the factor, and n is the index in the sequence, that's all it is.

Plug in the information we have to get the equation for this sequence:

a_n=(-1)(-4)^{n-1}

Then, you can solve for the 15th term:

a_{15}=(-1)(-4)^{15-1}\\a_{15}=(-1)(-4)^{14}\\a_{15}=(-1)(268,435,456)\\a_{15}=-268,435,456

Basically, just raise the scale factor to the power of the term you want minus 1, then multiply that by the first number.

4 0
2 years ago
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