penguins to whales 8:4 ( 2:1 )
Answer:
t = 3
Step-by-step explanation:
Given
- 3 (t - 2) + 7t = 9t - 9 ← distribute left side and simplify
- 3t + 6 + 7t = 9t - 9
4t + 6 = 9t - 9 ( subtract 9t from both sides )
- 5t + 6 = - 9 ( subtract 6 from both sides )
- 5t = - 15 ( divide both sides by - 5 )
t = 3
Answer:
t = 3.
Step-by-step explanation:
-3(t - 2) + 7t = 9t - 9 Distribute the -3 over the parentheses:
-3t + 6 + 7t = 9t - 9 Subtract 9t from both sides:
-3t - 9t + 7t + 6 = -9 Subtract 6 from both sides:
-3t - 9t + 7t = -9 - 6
-5t = -15
t = -15/-5
t = 3 (answer).
Answer:
29
Step-by-step explanation:
7(4 + 5 + 2) - 6(3 + 5)
First we need to know what PEMDAS is. It is an acronym that helps remind you what steps to take when evaluating any kind of equation or expression.
In PEMDAS, multiplication/division and addition/subtraction are in no particular order-- they are solved from left to right.
Knowing what PEMDAS means, you can start evaluating the expression. Start by solving inside the parentheses, as PEMDAS tells you to do.
Add 4 + 5 + 2 and 3 + 5 inside of the two parentheses in the expression.
7(11) - 6(8)
Since there are no exponents, you can skip this step and move on to multiplying 7 * 11 and 6 * 8.
(77) - (48)
The final process in evaluating this expression is to subtract 48 from 77.
29 is your answer.
Answer:
7(11) -6(8)
77-48=29
Step-by-step explanation:
Meg wants to take tennis lessons. In the chart, four instructors are listed with what they charge. Which instructor gives the best deal? Mark $100 for 10 hours Rick $80 for 9 hours Steve $75 for 8 hours Andy $60 for 5 hours
Mark charges $10.hour. Rick charges $8.89.hour. Steve charges $9.38/hour. Andy charges $12/hour. The best deal is to take tennis lessons from Rick.
So Rick would be the choice
h/20=5/4
Answer:
25
Step-by-step explanation:
Cross multipy
4h = 100
now divide by 4
h = 25