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Xelga [282]
3 years ago
15

What is 69= 5(7-5r) + 4(r-2) show work

Mathematics
1 answer:
Serjik [45]3 years ago
4 0

Answer:

r=-2

Step-by-step explanation:

69=35-25r+4r-8 simplify

69=27-21r subtract 27 from both sides

42=-21r divide both sides by -21

r=-2

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Answer:

8+8= 16

Step-by-step explanation:

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3 years ago
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The price of blackberries at a farm is $1.56 per pound. Which equation can be used to determine c, the total price of n pounds o
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C=1.56n

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Name the figure below in two different ways.<br> w<br> F<br> N
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What is the slope of a line that is perpendicular to a line whose equation is −2y=3x+7 ?
MariettaO [177]

The slope of a line that is perpendicular to a line whose equation is −2y = 3x + 7 is \frac{2}{3}

<em><u>Solution:</u></em>

Given that we have to find the slope of the line that is perpendicular to a line whose equation is −2y = 3x + 7

<em><u>The slope intercept form is given as:</u></em>

y = mx + c

Where "m" is the slope of line and "c" is the y - intercept

<em><u>Given equation is:</u></em>

-2y = 3x + 7\\\\-y = \frac{3}{2}x + \frac{7}{2}\\\\y = \frac{-3}{2}x - \frac{7}{2}

On comparing the above equation with slope intercept form,

m = \frac{-3}{2}

We know that product of slope of a line and slope of line perpendicular to it is -1

Therefore,

\frac{-3}{2} \times \text{ slope of line perpendicular to it } = -1\\\\ \text{ slope of line perpendicular to it } = \frac{2}{3}

Thus slope of line that is perpendicular to given line is \frac{2}{3}

3 0
2 years ago
The Martinez family went out for dinner and their meal totaled to $85.49. After they added the tip, their final amount they paid
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Answer:

22%

Step-by-step explanation:

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