What happens to a negative number when you take its absolutr value

Mathematics

2 answers:

Ahat [919]2 years ago

8 0

It loses its negative sign.

Stolb23 [73]2 years ago

6 0

It becomes a positive number. A number's absolute value is the number of spaces it is away from 0 on a number line. If you're on negative 5, it is 5 spaces away from 0, so it's absolute value is 5.

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Please help me Find f(-4)

Katyanochek1 [597]

As x < 3, you would use the equation $x^{2} -5$
Plus in -4 for X and you would get $(-4)^{2} -5$
$(-4)^{2}$ is equal to 16.
$16-5=11
$
$f(-4)=11$

5 0

2 years ago

Vanessa purchased a smart TV for $1,500 on a payment plan. Four months after purchasing the TV, her balance was $1,200. 7 months

fredd [130]

Answer:

The expression for her balance is "B(t) = -75*t + 1500". It'll take her 20 months to pay off the loan.

Step-by-step explanation:

We are looking for a function that has the following points:

B(0) = 1500

B(4) = 1200

B(7) = 975

Between B(4) and B(7), there was a variation of 3 months and a variation of -225 on her balance, thefore for each month that passed there was a variation of -75. Thefore, the expression for her ballance is:

B(t) = -75*t + 1500

To check if this expression is valid, we will apply the values provided on the problem:

B(0) = -75*0 + 1500 = 1500 (valid)

B(4) = -75*4 + 1500 = -300 + 1500 = 1200 (valid)

B(7) = -75*7 + 1500 = -525 + 1500 = 975 (valid)

When she pays of her loan, B(t) = 0, so we need to solve for t as shown below:

B(t) = -75*t + 1500 = 0

-75*t + 1500 = 0

75*t = 1500

t = 1500 / 75 = 20 months

It'll take her 20 months to pay the loan.

8 0