aubreykudro aubreykudro

05-02-2021
Mathematics

contestada

These are the new questions, there are 2 here. 2 images, 2 different questions

These are the new questions there are 2 here 2 images 2 different questions class=

These are the new questions there are 2 here 2 images 2 different questions class=

Respuesta :

mhanifa mhanifa

05-02-2021

Answer:

1) 12.6
2) 18

Step-by-step explanation:

Use ratios and solve for x

Q1

27/24 = (3x - 21)/(x + 13)
9/8 = 3(x - 3)/(x + 13)
3/8 = (x - 3)/(x + 13)
8(x - 3) = 3(x + 13)
8x - 24 = 3x + 39
8x - 3x = 39 + 24
5x = 63
x = 63/5
x = 12.6

Q2

9/14 = (x + 8)/(3x - 2)
9(3x - 2) = 14(x + 8)
27x - 18 = 14x + 112
27x - 14x = 112 + 18
13x = 130
x = 10
EF = x + 8 = 10 + 8 = 18

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