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3 years ago

HELP PLEASE!!!!!!!!!!!!!!!

Mathematics

1 answer:

n200080 [17]3 years ago

5 0

<h3>Answer: Choice C) -3m^12n^6</h3>

Explanation:

The coefficients -24 and 8 divide to -24/8 = -3. Based on this alone, the answer is between choices B and C.

The m terms divide to $\frac{m^5}{m^{-7}} = m^{5-(-7)} = m^{5+7} = m^{12}$

Notice how I subtracted the exponents. The general rule is $\frac{a^b}{a^{c}} = a^{b-c}$

Since we get m^12, this points us to choice C as the final answer

For the sake of completeness, here's what the n terms divide to

$\frac{n^4}{n^{-2}} = n^{4-(-2)} = n^{4+2} = n^{6}$

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Jackie earned $15 babysitting. she went to the movies the next night and spend $10. her brother paid her back $4 the next day sh

swat32

Answer:$1

Step-by-step explanation:

15-10=5 +4=9 -8= $1

4 0

3 years ago

A car is traveling down a highway at a constant speed, described by the equation d=65t, where d represents the distance, in mile

Alexxx [7]

Answer:

Step-by-step explanation:

We are given an equation d = 65 t, where d represents the distance, in miles, that the car travels at this speed in t hours.

We know distance, speed and time relation

d = s * t.

Where d represents the distance, that the car travels at this speed in t at the speed s.

If we compare that relation with the given equation, we can see s = 65.

So,

a) The 65 tell us speed of 65 miles per hour in this situation.

b) Second part seems to be incorrect. Please check it again.

c) We are given distance = 26 miles.

Plugging d= 26 in the given equation.

26 = 65 t

Dividing both sides by 65, we get

26/65 = t

t= 0.4 hours.

So, it takes 0.4 hours or 0.4 * 60 = 24 minutes o travel 26 miles at this speed.

6 0

3 years ago

5x+8=9x+12 helpppppp

Marina CMI [18]

Hi there! :)

Answer:

$\boxed{X=-1}$

*THE ANSWER MUST HAVE A NEGATIVE SIGN!*

Step-by-step explanation:

First, you subtract by 8 from both sides of an equation.

5x+8-8=9x+12-8

Subtract.

12-8=4

5x=9x+4

Then, you subtract by 9x from both sides of an equation.

5x-9x=9x+4-9x

Simplify by equation.

-4x=-4

Divide by -4 from both sides of an equation.

-4x/-4=-4/-4

Divide by the numbers from left/right.

-4/-4=-1

$\boxed{X=-1}$ , is the FINAL/CORRECT ANSWER! :)

Have a nice day! :)

:D

-Charlie

Thank you!

4 0

3 years ago

Please help me find the y intercept! (show work)

taurus [48]

Answer:y=2x+1

Step-by-step explanation:

y − y 1= m( x − x 1 ) .

Slope-intercept form: y = 2 x + 1

5 0

3 years ago

Read 2 more answers

Nick's telephone company charges $0.07 per minute for weekend calls and $0.08 per minute for calls made on weekdays. This month

DerKrebs [107]

So pretend weekend calls is x and weekday calls are y.

the formulas is x + y = 610
                        0.07x + 0.08y = 48.05

So, x = 610 - y

Then, substitute x into the second equation.

0.07(610 - y) + 0.08y = 48.05
42.7 - 0.07y + 0.08y = 48.05
                        0.01y = 5.35
                               y = 535

Then substitute y into the first equation.

x + 535 = 610
          x = 75

Just to be sure, substitute x and y into the second equation.

0.07(75) + 0.08(535) = 48.05
             5.25 + 42.80 = 48.05
                        48.05 = 48.05

So, on weekends, he used 75 minutes.
On weekdays, he used 535 minutes.

6 0

3 years ago