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3 years ago

9

What would be the original cost? $99.50?

1 answer:

NeX [460]3 years ago

3 0

$99.50 / 0.5 = $49.75

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1/4(3c+5)-1/2(2c+3)=1/2<br><br> Please show some work so I can fiqure it out.

PIT_PIT [208]

So,

1/4(3c + 5) + -1/2(2c + 3) = 1/2

First, we distribute to get rid of the parentheses. (PEMDAS)
3/4c + 1 1/4 - c - 1 1/2 = 1/2

Now, we collect like terms.
-1/4c - 1/4 = 1/2

Add 1/4 to both sides.
-1/4c = 3/4

Now, multiply by the reciprocal (-4/1).
c = -3

Check your answer.

1/4(3[-3] + 5) + -1/2(2[-3] + 3) = 1/2

1/4(-9 + 5) + -1/2(-6 + 3) = 1/2

-2 1/4 + 1 1/4 + 3 - 1 1/2 = 1/2

-1 + 1 1/12 = 1/2

1/2 = 1/2

4 0

3 years ago

Read 2 more answers

Whats the slope intercept form for the points [5,2] and [0,-1]

Advocard [28]

Answer:

$\displaystyle y=\frac{3}{5}x-1$

Step-by-step explanation:

<u>The Equation of a Line</u>

The equation of the line in slope-intercept form is:

$y=mx+b$

Where m is the slope and b the y-intercept.

The equation of a line passing through points (x1,y1) and (x2,y2) can be found as follows:

$\displaystyle y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

We are given the points (5,2) and (0,-1), thus:

$\displaystyle y-2=\frac{-1-2}{0-5}(x-5)$

Operating:

$\displaystyle y-2=\frac{-3}{-5}(x-5)$

$\displaystyle y-2=\frac{3}{5}(x-5)$

To find the slope-intercept form, we continue to simplify the expression:

Removing the parentheses:

$\displaystyle y-2=\frac{3}{5}x-\frac{3}{5}\cdot 5$

$\displaystyle y-2=\frac{3}{5}x-3$

Adding 2:

$\displaystyle y=\frac{3}{5}x-3+2$

$\mathbf{\displaystyle y=\frac{3}{5}x-1}$

4 0

3 years ago

B. -8+ -2(3) simplified <br><br> C.4 + -5(-3) + (-7)<br><br> D. (-4.25)(2) + (-4.25)(-2)

shtirl [24]

B. -14
C. 12
D. 0
Hopefully this is right!

7 0

4 years ago

The sum of a number and 6 is at least 15

k0ka [10]

X + 6 is greater than (>) or equal to (=) 15

7 0

4 years ago

5 3/4 x 2 1/3 =? wut da answer?

Alisiya [41]

The answer is 13 5/12 hope this helps

7 0

4 years ago