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djverab [1.8K]
3 years ago
10

Please help due tonight

Mathematics
1 answer:
Alona [7]3 years ago
3 0

Answer:

n = 13

Step-by-step explanation:

1. (9n-8) and (6n-7) combined equal 180 degrees, and we can translate that into an equation and then solve it: 9n - 8 + 6n- 7 = 180

2. (Solving)

Step 1: Simplify both sides of the equation.

  • (9n+6n)+(-8-7) = 180
  • 15n-15=180

Step 2: Add 15 to both sides.

  • 15n-15+15 = 180+15
  • 15n = 195

Step 3: Divide both sides by 15.

  • \frac{15n}{15}  = \frac{195}{15}
  • n = 13

Therefore, n = 13.

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A. The point-slope form of the equation of a line is y ? y1 = m(x ? x1), where m is the slope and (x1, y1) is a point on the lin
Rudiy27

Answer:

A.

y - 5 = -2(x-6)

Negative reciprocal gives you the perpendicular slope so negative reciprocal of 1/2 is -2.

Then apply point-slope form.

B. The answer is x = 6.

The midpoint of JK is

\left( \frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2} \right) = \left( \frac{8+ 4}{2}, \frac{4 + 4}{2} \right) = \left(6,4\right)

The line that goes through JK is just a horizontal line y = 4 because the y-coordinate does not change. So its perpendicular bisector is the vertical line that goes through the x-coordinate of the midpoint, that is, x = 6.

8 0
3 years ago
MARIA WALKED 4.035 KILOMETERES. WHAT IS 4.035 WRITTEN IN AS EXPANDED FORM ?
notka56 [123]
Here's my interpretation:  4 whole km, plus zero tenths of a km, plus 3 hundredths of a km, plus 5 thousandths of a km.
4 0
3 years ago
Read 2 more answers
A pet shop has rabbits and gerbils for sale. They have 20 animals altogether. They sell two rabbits. Then one of the gerbils has
Triss [41]
20 animals - 2 rabbits = 18 animals
18 animals + 2 gerbils = 20 animals.
20 animals / 4 = 5 animals
There are 5 rabbits and 15 gerbils now.
At the start 2 rabbits were sold so add that on.
5 + 2 = 7
There were 7 rabbits.
There weren't any twin gerbils then.
15 - 2 = 13.
There were 13 gerbils and 7 rabbits to start with.

Hope This Helps You!
Good Luck Studying :)
4 0
3 years ago
What is the value of 4 to the power of 3 divided by 2 to the power of 3
sp2606 [1]

Answer:

8

Step-by-step explanation:

4^3/2^3

(4^3)/(2^3)

  1. 4^3 = 64
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64/8 = 8

7 0
3 years ago
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Solve the system using elimination.5x-9y=12x-9y=-12
NemiM [27]

Answer:

x = 6

y = 2

Explanation:

To solve the system using elimination, we need to multiply the second equation by -1, so the second equation is equivalent to:

x - 9y = -12

-1 (x - 9y) = -1 (-12)

-x + 9y = 12

Then, we can sum this equation and the first equation. So:

5x - 9y = 12

-x + 9y = 12

4x + 0 = 24

So, we can solve for x, as:

4x = 24

4x/4 = 24/4

x = 6

Then, we can replace x by 6 on the first equation and solve for y, so:

5x - 9y = 12

5(6) - 9y = 12

30 - 9y = 12

30 - 9y - 30 = 12 - 30

-9y = -18

-9y/(-9) = -18/(-9)

y = 2

Therefore, the solution of the system is x = 6 and y = 2

​

4 0
1 year ago
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