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atroni [7]
3 years ago
14

7r-5r+8=9r+8-r translate to an equation, then solve

Mathematics
1 answer:
pshichka [43]3 years ago
7 0

Answer:

r=0

Step-by-step explanation:

7r-5r+8=9r+8-r

This is already an equation

Combine like terms

2r+8 = 8r+8

Subtract 2r from each side

2r-2r +8 = 8r-2r +8

8 =6r+8

Subtract 8 from each side

8-8 = 6r+8-8

0 = 6r

Divide by 6

0/6 = 6r/6

0 =r

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Find y round to the nearest tenth! trigonometry question! please help!!​
Serga [27]

Answer:

Step-by-step explanation:

The top left angle of the triangle is 62°, we know because we are shown that the exterior angle outside that part of the triangle is 28°, so 62° would make that a corner.

We can use Tan of this angle to find the missing side (in this case, the side opposite of the angle measuing 62°)

Tan A = (opposite side)/(adjacent side)

   Tan 62° = y/350

solve for y

 

           350(Tan 62°) = y

                   658.3 = y    (rounded to the nearest tenth)

7 0
3 years ago
What are the coordinates of the circumcenter of the triangle?
gulaghasi [49]

It's the right angle. The circumcenter is in half of hypotenuse.

The formula of a midpoint of segment BC:

M\left(\dfrac{x_B+x_C}{2},\ \dfrac{y_B+y_C}{2}\right)

We have the points B(-2, -2) and C(7, -5). Substitute:

\dfrac{-2+7}{2}=\dfrac{5}{2}=2.5\\\\\dfrac{-2+(-5)}{2}=\dfrac{-7}{2}=-3.5

Answer: (2.5, -3.5)

8 0
3 years ago
M&lt;2 = 4x - 26,<br> m&lt;3 = 3x + 4
mestny [16]

Answer:

m<2 = 4x - 26 = 4(30) - 26 = 94 degrees

m<3 = 3x + 4 = 3(30) + 4 = 94 degrees

Step-by-step explanation:

Congruent angles are equal, so m<2 = m<3

4x - 26 = 3x + 4

x = 30

m<2 = 4x - 26 = 4(30) - 26 = 94 degrees

m<3 = 3x + 4 = 3(30) + 4 = 94 degrees

8 0
3 years ago
PLZ HELP ME!!! I NEED HELP!!!
mariarad [96]

Answer:

The answer is 1

Step-by-step explanation:

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ii)\dfrac{(\frac{229}{45} -\frac{25}{6})\div\frac{83}{15}   }{(\frac{14}{3} +\frac{3}{4})\times\frac{48}{13}}\times\frac{240}{7} + \frac{30}{70} + \frac{2}{7}

<h3 />

iii)(\dfrac{(\frac{458}{90} -\frac{375}{90})\times\frac{15}{83}   }{(\frac{56}{12} +\frac{9}{12})\times\frac{48}{13}}\times\frac{240}{7}) + \frac{30}{70} + \frac{2}{7}

<h3 />

iv) (\dfrac{(\frac{83}{90})\times\frac{15}{83}   }{(\dfrac{65}{12} )\times\dfrac{48}{13}}\times\dfrac{240}{7}) + \dfrac{30}{70} + \dfrac{2}{7}

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v)(\dfrac{(\frac{1}{6})   }{(5\times4)}\times\dfrac{240}{7}) + \dfrac{30}{70} + \dfrac{20}{70}

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vi)(\dfrac{1}{(6\times5\times4)}\times\dfrac{240}{7}) + \dfrac{50}{70}

<h3 />

vii)(\dfrac{1}{120}\times\dfrac{240}{7}) + \dfrac{50}{70}

viii)(\dfrac{2}{7}) + \dfrac{50}{70}

ix)\dfrac{20}{70} +\dfrac{50}{70}

x)= \dfrac{70}{70} \hspace{0.2cm} = \hspace{0.2cm} 1

<h3 />
6 0
3 years ago
If the set of values in the table represents points on a line, what is the value of a?
Goshia [24]

Answer:

3

Step-by-step explanation:

6 0
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