Question

i will mark you brainliest
can you answer me this question
plz it is urgent​

Answer 1

Step-by-step explanation:

7. Let x be the unknown multiple

5x+3x+2x=70

10x=70

x=7

students who like:

Maths=5x=35

Science=3x=21

Social science=2x=14

8. let rate of interest be x

$interest = \frac{4550 \times 2 \times x}{100} = 1092 \\ x = 12\%$

9. (see in attachment)

Answer 2

Answer:

7) 35 students like maths.

8) 12%

9) 2x^2 - 15xy + 17y^2 - 17

If any of the answer is incorrect, I am really sorry for it.

Hope it helps you.

Thank you.