Answer:
The first one is x = 9
5 (x + 7) - 3 (x - 4) = 7x + 2
The second one is x = 15
(5x - 9) = 2(
x + 6)
The third one is x = -8
4 (3x + 5) - 3 = 9x - 7
Answer:
(-2,8) and (2,-8)
the second is a reflection across the x axis
the third is a reflection across the y axis
this just reverse the points, i'm not sure if it's anything
Step-by-step explanation:
B you just need to know the formula are use and app
Answer:
(-1, -7) (0, -1) (1, 5) (5, 29)
Step-by-step explanation:
okay so the equation is y = 6x - 1
all you have to do is plug in all the x values to get the y
y = 6(-1) - 1
y = - 6 - 1
y = -7
y = 6(0) - 1
y = 0 - 1
y = -1
y = 6(1) - 1
y = 6 - 1
y = 5
y = 6(5) - 1
y = 30 - 1
y = 29
Answer:
The height of First Copy is 20 cm.
Step-by-step explanation:
Given:
Original Height = 25 cm
First copy is reduce to 80% of Original height.
Therefore to find the height of first copy can be find out by multiplying 80 with original height and then dividing by 100.
∴ Height of First Copy = ![\frac{80}{100} \times \textrm{original height}= 0.8\times 25 cm = 20cm](https://tex.z-dn.net/?f=%5Cfrac%7B80%7D%7B100%7D%20%5Ctimes%20%5Ctextrm%7Boriginal%20height%7D%3D%200.8%5Ctimes%2025%20cm%20%3D%2020cm)
Hence Height of first copy is 20 cm
Now Another copy is reduce to 85% of First Copy.
Therefore to find the height of another copy can be find out by multiplying 85 with first copy height and then dividing by 100.
∴ Height of Another Copy = ![\frac{85}{100} \times \textrm{first copy height}= 0.85\times 20 cm = 17cm](https://tex.z-dn.net/?f=%5Cfrac%7B85%7D%7B100%7D%20%5Ctimes%20%5Ctextrm%7Bfirst%20copy%20height%7D%3D%200.85%5Ctimes%2020%20cm%20%3D%2017cm)
Hence Height of Another copy is 17 cm