Sign In
Ask Question
Chevy
Mathematics
23 November, 00:27
If 9a + 8b+9c=-9, what is 81c+72b+81a?
+3
Answers (
2
)
Maritza Mays
23 November, 00:28
0
Ok so given
9a + 8b + 9c = - 9
&
81c + 72b + 81a
now i rearrange the terms (since addition is commutative)
81a + 72b + 81c
what is this equal to?
well comparing the first and 2nd equation
9a + 8b + 9c = - 9
81a + 72b + 81c = ?
well compare 9a to 81a? is there something you can multiply to the first to get the 2nd
compare 8b to 72b, can you use that same number to get 2nd
same for 9c to 81c
you would probably notice that by multiplying them all by 9, you will get the terms in the 2nd expression
so, if you multiply each term in the first to get the 2nd, wouldnt the answer of the 2nd be the 1st multiplied by 9?
Comment
Complaint
Link
Mckinley Wagner
23 November, 00:38
0
9x9=81
8x9=72
9x9=81
-9x9=-81
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“If 9a + 8b+9c=-9, what is 81c+72b+81a? ...”
in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
Solve T=C (3 + AB) for A.
Answers (1)
8 is 25% of what number?
Answers (2)
Cristal is using geometry software to construct a regular octagon by using rotations. What is Cristal using for the angle of rotation?
Answers (1)
In Jonah's restaurant, each table seats 4 people. Jonah has 78 napkins to place at the tables. How many tables can Jonah set with the napkins he has?
Answers (2)
What is the area of a semicircle with diameter of 6
Answers (2)
New Questions in Mathematics
If 1 6 of a gallon of milk is shared equally between 3 friends, how much mIf 1 6 of a gallon of milk is shared equally between 3 friends, how much milk will each friend getilk will each friend get
Answers (2)
There are 276 plan in the flower garden what is 276 rounded to the nearest ten?
Answers (2)
13 out of 60 people surveyed what angle in a pie chart would you use?
Answers (1)
A toy company produces rubber balls that have a radius of 1.7 cm. A sphere has a radius of 1.7 centimeters. What is the volume of one rubber ball? Round to the nearest hundredth of a centimeter.
Answers (1)
Translate this sentence into an equation. 33 is the product of Jenny's height and 3 Use the variable to represent Jenny's height.
Answers (1)
Home
»
Mathematics
» If 9a + 8b+9c=-9, what is 81c+72b+81a?
Sign In
Sign Up
Forgot Password?