Answer:
The product of (x-3) and (x+7) is x² + 4x - 21
Step-by-step explanation:
The product of (x-3) and (x+7) is x² + 4x - 21
The product of (x - 3) and (x + 7) can be found as follows:
(x - 3)(x + 7)
open the bracket by multiplying
Therefore,
x(x) +x(7) - 3(x) - 3(7)
x² + 7x - 3x - 21
combine like terms
x² + 4x - 21
Answer:
56 problems
Step-by-step explanation:
So we already know that the answer is: 56. However, a good help is knowing how to obtain this answer from the data provided.
Tony's quiz had 80 questions
Tony correctly answered 70% of them.
We can always write a percentage amount as a ratio by dividing the amount by 100.
.
This means that for every 100 questions, tony will respond correctly 70.
So, if Toni did a questionnaire of n questions, the amount that will answer correctly is calculated by the following expression:
If 
then:
1/3 and 2/5 --> what we need is a least common denominator
(1/3)x5 (2/5)x3
5/15 and 6/15
so he needs to paint his room two more times which will make the 5/15 become 15/15
you start with 5/15 and you need to add "5/15" two more times which will make 15/15
so you do that to 6/15
6/15+6/15+6/15=18/15=1 3/15 or 1 1/5 cans of paint ANSWER
Answer:
yes
Step-by-step explanation:
she did it goood
