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Vladimir79 [104]
3 years ago
10

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!! What is the value of x?

Mathematics
1 answer:
lutik1710 [3]3 years ago
4 0

Answer: C

<u>Step-by-step explanation:</u>

\dfrac{x+2}{15} =\dfrac{x+1}{5}

cross multiply: 5(x + 2) = 15(x + 1)

distribute: 5x + 10 = 15x + 15

                <u> -5x         </u>  <u>-5x          </u>

                          10 = 10x + 15

                        <u> -15 </u>    <u>       -15 </u>

                          -5  = 10x

                           \dfrac{-5}{10}=\dfrac{10x}{10}

                           -\dfrac{1}{2} =x

                           

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3 years ago
Solve the system of equations y=5x-1 y=9x-9
Leto [7]

Answer:

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7 0
2 years ago
The table represents a linear function. find the values of a,b, and c. Show your work.
viva [34]

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The values of a , b , c are ⇒ a = 1 , b = 10 , c = 9

Step-by-step explanation:

* Lets describe the meaning of the linear function

- Linear function is represented by a line graphically

- The equation of the line is y = mx + c, where m is the slope

  of the line and c is the y-intercept (the point of intersection

  between the line and the y-axis is (0 , c))

- m = change of y/change of x

- We can find m from any two points on the line

* Lets use m to find a, b and c

- Use the points (3 , 8) and (5 , 9) to find m

∵ m = (y2 - y1)/(x2 - x1)

∴ m = (9 - 8)/(5 - 3) = 1/2

- Find a by using points (a , 7) and (3 , 8) ⇒ (or (5 , 9))

∵ m = (8 - 7)/(3 - a) = 1/2

∴ 1/(3 - a) = 1/2  ⇒ by using cross multiplication

∴ 3 - a = 2 ⇒ subtract 3 from both sides

∴ -a = -1 ⇒ × -1 both sides

∴ a = 1

- Find b by using points (5 , 9) and (7 , b) ⇒ (or (3 , 8))

∵ m = (b - 9)/(7 - 5) = (b - 9)/2

∴ (b - 9)/2 = 1/2  ⇒ by using cross multiplication

∴ 2(b - 9) = 2 ⇒ open the bracket

∴ 2b - 18 = 2 ⇒ add 18 to both sides

∴ 2b = 20 ⇒ ÷ 2

∴ b = 10

- Find b by using points (5 , 9) and (c , 11) ⇒ (or (3 , 8))

∵ m = (11 - 9)/(c - 5) = 2/(c - 5)

∴ 2/(c - 5) = 1/2  ⇒ by using cross multiplication

∴ c - 5 = 4 ⇒ add 5 to both sides

∴ c = 9

* The values of a , b , c are ⇒ a = 1 , b = 10 , c = 9

6 0
3 years ago
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Aneli [31]

Answer: with what

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8 0
3 years ago
Can someone Please help me ???<br> If you can help me ill give you 20 points and brainliest :)
Phoenix [80]

First, classify each line segments of triangle that are the same in both triangles.

RS = XU

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Second, divide to find the scale ratio.

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16/6.4 = 2.5

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Since the scale ratios are identical, the triangles are similar.

Therefore, the answer is [ Yes, the sides are in the ratio 2:5 ]

Best of Luck!

4 0
3 years ago
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