The first problem
x(x+3)=28
x^2+3x=28
x=4
The second problem
x(x-4)=32
x^2-4x-32=0
x=8
Answer:
i) around 41.7 kg
ii) 72 books
Step-by-step explanation:
i) if 108 books are 30 kg then how much is the mass for 150? You cross multiply so 150 multiply by 30 and 108 multiply by x (the unknown mass). you will get 4500=108x and then 4500/108 is the unknown mass.
ii) use the same way as above.
Answer:
Simplify the expression.
7x + 10
Step-by-step explanation:
i hope this help you
Answer:
5/24
Step-by-step explanation:
First, we want to get a common denominator, so we multiply them together.
The 2 new fractions are. . .
4/24 (1/6) and 6/24 (1/4)
Now, if you are looking for the number between 4/24 and 6/24, the answer is 5/24.
It is 1/6 or .16 I used Photomath
