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Verdich [7]
3 years ago
8

Lena has $2800 dollars in her account and makes automatic $700 monthly payments on a cell phone bill. Use a table to find when a

utomatic payments would make the value of the account zero.
Mathematics
2 answers:
nataly862011 [7]3 years ago
3 0

Answer:

Well you can't go thur a month because $700 by 12 months is $8400.

Step-by-step explanation:

700 x 12 = 8400

8400 - 2800 = -5600

So you would be negitative.

Schach [20]3 years ago
3 0

Answer:

 The correct answer is the account will reach zero within 4 months.

Step-by-step explanation:

To make a correct table and find out when the 2800 in Lena's account will reach zero, you must subtract 700 from the total for each month.

The table would be formed as follows:

TOTAL                         2800    

MONTH 1:                     2100

MONTH 2:                    1400

MONTH 3:                     700

MONTH 4:                     0

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How is this equation completed? I cannot find any examples in the book.
djverab [1.8K]

Answer: Option D

t_{max} =19\ s

Step-by-step explanation:

Note that the projectile height as a function of time is given by the quadratic equation

h = -12t ^ 2 + 456t

To find the maximum height of the projectile we must find the maximum value of the quadratic function.

By definition the maximum value of a quadratic equation of the form

at ^ 2 + bt + c is located on the vertex of the parabola:

t_{max}= -\frac{b}{2a}

Where a

In this case the equation is: h = -12t ^ 2 + 456t

Then

a=-12\\b=456\\c=0

So:

t_{max} = -\frac{456}{2*(-12)}

t_{max} =19\ s

7 0
3 years ago
I write down a number lager than 1 and less than 10. Find the chance that the number is a factor of 12.
Ratling [72]

Answer:

4

Step-by-step explanation:

2*6 = 12

3*4 =12

these are all the numbers that would be a factor of 12 between 2-10

3 0
3 years ago
How do I write each number as a power of the given base? <br><br>example: 49; base 7
VLD [36.1K]
7^n=49
we know that 7*7=49 so thus 7^2=49
7^n=7^2
therefor n=2
it is written as 7^2
7 0
3 years ago
Which expression is equal to p + (q + r)?
Svetach [21]
The answer should be a) (p+q)*r
7 0
3 years ago
Answer four of these question and you will be the brainliest. Answer this with solution please
lawyer [7]

(1) -1.79, 2 1/4, 2.54 , -4

negative -> positive

reorder: -4. -1.79, 2 1/4 (or 2.25), 2.54

(2) -x

The larger x is the smaller the value

-$40.75<-$25.20

BUT the larger after the minus the more you owe so Renae owes more.

(3)

sorry idk

(4)

78F-x=70F

|x|=8*F

4 0
3 years ago
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