Answer:
67.5
Step-by-step explanation:
7.5 (the lenght of the pencil) multiplied by 9 (the number of pencils) is 67.5
Answer:

Step-by-step explanation:
Zeros of a quadratic equation are -1 and 5.
Sum of zeros = -1 + 5 = 4
Product of zeros = (-1)(5) = -5
The quadratic equation will be :

So, the required quadratic equation is
.
You use distributive property to distribute the numbers out.
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I)
8 - 3x = 23
-3x = 15
x = -5
ii)
5x - 16 = 34
5x = 50
x = 10
iii)
2 - 5x = -3
-5x = -5
x = 1