3 years ago

1. James and Alexis simplified the expression 5 + 42 - 6/3. James' said the answer is

Mathematics

1 answer:

Trava [24]3 years ago

4 0

Answer:

Step-by-step explanation:

5 + 4^2 - 6/3

= 5 + 16 - 2

= 21 - 2

= 19

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A radio station has $400 to give away for a contest. It gives away a $50 prize each week. The equation y = 400 – 50x represents

Vlad1618 [11]

Answer:

The y intercept, (0,400) represents the amount of money the radio station originally had. The x-intercept, (8,0), represents the amount of weeks it will take for the radio station to have $0 left.

Step-by-step explanation:

5 0

2 years ago

Solve the equation for y. 4.2x-1.4y=2.1

mr Goodwill [35]

Subtract 2.1 from both sides:

$4.2x-1.4y-2.1=0$

Add 1.4y to both sides:

$4.2x-2.1=1.4y$

Of course, we can rewrite this as

$1.4y=4.2x-2.1$

Divide both sides by 1.4

$y = \dfrac{4.2}{1.4}x - \dfrac{2.1}{1.4} = 3x - 1.5$

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3 years ago

Simplify. (-2)^-3 <br> ?????

Licemer1 [7]

Remember
$(ab)^c=(a^c)(b^c)$ and
$x^{-m}= \frac{1}{x^m}$
so
$(-2)^{-3}= \frac{1}{(-2)^3}= \frac{1}{(-1)^3(2)^3}=\frac{1}{(-1)(8)}=\frac{1}{-8}=\frac{-1}{8}$