Answer:
The mean of A and C is equal to 10.
Step-by-step explanation:
We know that,
The mean of A and B is 20,
The mean of B and C is 24,
The mean of A,B and C is 18,
Put the value of A+B from (1) in (3),
C = 14
Put the value of B+C from (2) in (3)
A = 6
Mean of A and C is :
So, the mean of A and C is equal to 10.
Answer: x = 3. the length of side ST is 14.
Step-by-step explanation:
Since both sides are equal, we can use the equation 3x + 5 = 5x - 1.
To start the problem, we subtract 3x from each side which makes our equation 5 = 2x - 1.
The next step would be to simplify the equation by adding 1 to each side which makes our equation 6 = 2x.
We then need to simplify the equation to x = 3.
This means the answer to 9 is x = 3.
For the next problem, since we already know the value of x, we substitute its value which in this case would be 3. This leaves us with an equation of 9 + 5, which equals 14.
This means the length of side ST is 14.
Answer:
Jessica spent S28 on fruit at the grocery store. She spent a total of $40 at the store. What percentage of the total did she spend on fruit?
Step-by-step explanation:
The answer is D. You just need to subtract and simplify it
Answer:
For one meal each person paid 1.07 times the price of the meal (includes 7% tax).
Therefore price of each person's meal was 13.75/1.07 = $12.85
Total cost for all 5 meals was therefore $64.25--before taxes. $68.75 including the taxes.