Answer:
There were 7 cats
Step-by-step explanation:
In this question, we are asked to calculate the number of individual cats and dogs present at an animal shelter on a certain Monday.
Since we do not know the exact numbers, let’s represent these animals by variables. Let the number of dogs be d and the number of cats be c .
Since there are a total of 9 animals, this means;
c + d = 9 •••••••••(I)
Let’s now get the second equation out of their finances;
Total amount spent on dogs will be 7 * d = 7d while total amount spent on cats will be 5.5 * c = 5.5c. If we add both, we will get the total amount spent which is $52.5
Mathematically therefore;
5.5c + 7d = 52.5 ••••••••(ii)
Now from 1, we can say that c = 9 - d
Let’s substitute this in ii
5.5(9-d) + 7d = 52.5
49.5 - 5.5d + 7d = 52.5
1.5d = 52.5 - 49.5
1.5d = 3
d = 3/1.5 = 2
Since d = 2, c = 9 - d = 9 - 2 = 7
Answer:
a = 9
b = 19
Step-by-step explanation:
DO B FIRST
The mean is the average of all the terms (numbers) in the sequence
To find the average you find the sum of the terms and divided the sum by the number of terms there are.
The mean times the number of terms equals the sum of all the terms subtract the terms that you know from the sum to get A
a = 17(10)-7-12-15-17-19-20-22-24-25
a = 170-161
a = 9
The median is found by taking the average of the two middle terms
Our middle terms are 17 and B
the median times 2 equals the sum of the two terms and then subtract the term you know from the sum
b = 18(2)-17
b = 36-17
b = 19
Answer:
41
Step-by-step explanation:
because that is the only number that does not have any factors
Answer:
6
Step-by-step explanation:
she would need 3 packs to give each student 1 pencil, so she would have to double that to give each student 2 pencils.