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Genrish500 [490]
2 years ago
13

Solve the equation 5n+45=55

Mathematics
2 answers:
blondinia [14]2 years ago
8 0
N = 2 is the answer to this one
Andrej [43]2 years ago
6 0
N = 2, 5 * 2 + 45 = 55, 10 + 45 = 55, 55 = 55
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Segment PH is graphed on the coordinate grid where P is (-31,8) and H is (29,-10). Point E is the midpoint of segment PH. If poi
maks197457 [2]

Answer:

The coordinates of point A are (-11 , 2)

Step-by-step explanation:

- The coordinates of point P are (-31 , 8)

- The coordinates of point H are (29 , -10)

- Point E is the mid-point of segment PH

- The coordinates of the the mid-point are:

→ x=\frac{x_{1}+x_{2}}{2} and y=\frac{y_{1}+y_{2}}{2}

∵ E is the mid-point of segment PH

∴ The x-coordinate of point E is x=\frac{-31+29}{2}=-1

∴ The x-coordinate of point E is -1

∴ The y-coordinate of point E is y=\frac{8+-10}{2}=-1

∴ The y-coordinate of point E is -1

∴ The coordinates of point E are (-1 , -1)

- Point A is graphed \frac{2}{3} of the way along the segment from P to E

- That mean the distances from points P to A is 2 parts and from P to E

  is 3 parts, then the distance from A to E is "3 - 2" = 1 part

- So point A divides the line segment PE at ratio 2 : 1 from P

- The coordinates of the division point are:

→ x=\frac{x_{1}m_{2}+x_{2}m_{1}}{m_{1}+m_{2}} and y=\frac{y_{1}m_{2}+y_{2}m_{1}}{m_{1}+m_{2}}

∵ Point A divides PE at ratio 2 : 1

∵ The coordinates of point P are (-31 , 8)

∵ The coordinates of point E are (-1 , -1)

∴ The x-coordinate of point A is x=\frac{(-31)(1)+(-1)(2)}{2+1}= -11

∴ The x-coordinate of point A is -11

∴ The y-coordinate of point A is x=\frac{(8)(1)+(-1)(2)}{2+1}=2

∴ The y-coordinate of point A is 2

∴ The coordinates of point A are (-11 , 2)

* The coordinates of point A are (-11 , 2)

3 0
3 years ago
15 plus the difference of 10 and a number X is 15 (X=?)
Verizon [17]
15+(10-x)=15 would be your equation if that is what you are looking for.
5 0
3 years ago
What is 10.417 rounded to the nearest hundredth?
Zarrin [17]
10.417 rounded to the nearest hundredth is 10.42

Hope it helps!

7 0
3 years ago
Help now pls! Algebra 1 HW stuck on a question
Rus_ich [418]

Answer:

false a = -3

Step-by-step explanation:

7v^2 + 2v^3 -7v - (5v^3 -4v^2 +10v)

7v^2 + 2v^3 -7v - 5v^3 +4v^2 -10v

-3v^3 + 11v^2 -17v

6 0
3 years ago
Quadratic equation whose vertex is (2,3) and y intercept is 11
never [62]

Answer:

y = 2(x - 2)² + 3      vertex form

y = 2x² - 8x + 11     standard form

Step-by-step explanation:

Vertex form

y = a(x - h)² + k

(h, k) = (2, 3)

y = a(x - 2)² + 3

To find "a" plug in the y-intercept (0, 11)

11 = a(-2)² + 3

11 = 4a + 3

Subtract 3 from both sides

8 = 4a

a = 2

y = 2(x - 2)² + 3

Expand

y = 2(x² - 4x + 4) + 3

y = 2x² - 8x + 11

5 0
3 years ago
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