Answer:
f^-1 (9) = 7 equals f = 9/7
Step-by-step explanation:
f^-1 x 9 = 7, f ≠ 0
1/f x 9 = 7
9/f = 7
9 = 7f
7f = 9
Answer:
110 cards were sold on Mother's Day
Step-by-step explanation:
Bob's gift shop sold 20% of all the cards sold on Mother's Day.
Let the number of cards sold on Mother's day be m
Bob sold 20% of m or 0.2m
We know that 0.2m is 22, so now we can solve for m
- 22 = 0.2m
- 22 ÷ 0.2 = m
- 110 = m
110 cards were sold on mothers day
Note
We know that 0.2 is 1/5, so instead of dividing each side by 0.2, we could have multiplied both sides by 5
- 22 = 0.2m
- 22 * 5 = 1/5m * 5
- 110 = 1m
- 110 = m
-Chetan K
There are different kinds of math problem. There will be 11 rats in sewer #1.
<h3>What are word problem?</h3>
The term word problems is known to be problems that are associated with a story, math, etc. They are known to often vary in terms of technicality.
Lets take
sewer #1 = a
sewer #2 = b
sewer #3 = c
Note that A=B-9
So then you would have:
A=B-9
B=C- 5
A+B+C=56
Then you have to do a substitution so as to find C:
(B- 9) + (C-5) + C = 56
{ (C- 5)-9} + (C-5) + C = 56
3C - 19 = 56
3C = 75
B = C- 5
B = 25 - 5
Therefore, B = 20
A = B - 9
= 25 - 9
=11
Therefore, there are are 11 rats in sewer #1
Learn more about Word Problems from
brainly.com/question/21405634
In mathematics, two variables are proportional if a change in one is always accompanied by a change in the other, and if the changes are always related by use of a constant multiplier. The constant is called the coefficient of proportionality or proportionality constant.
Answer: 3
x
+
52
Step-by-step explanation: