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erastovalidia [21]
3 years ago
9

How can you determine which property of equality is needed to isolate a variable and solve a given equation? Explain. A. Use inv

erse relationships to "undo" the operation. B. Use the same operation to "undo" the operation. C. Use the Distributive Property to isolate the variable. D. Substitute the known values and simplify.
Mathematics
2 answers:
mamaluj [8]3 years ago
6 0

Answer:

A. Use inverse relationships to "undo" the operation.

Step-by-step explanation:

I took the , and this was the correct answer. :)

sesenic [268]3 years ago
6 0

Answer:

A

I had that test and got 100%

Step-by-step explanation:

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Which logarithmic equation is equivalent to the exponential equation below?<br><br> 7^x=21
Irina-Kira [14]
Log base 7 (21)=x
Hope this helps!
7 0
3 years ago
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-3x+10y=-60<br> 3x+5y=15
Verdich [7]

Answer:

x=10, y=-3

Step-by-step explanation:

solve by addition/elimination

6 0
3 years ago
A city-wide gardening club is up of men, women and children in the ratio 5:4:11.
Sever21 [200]

Answer:

Women: 448  Men: 560  Children: 1232

Step-by-step explanation:

5+4+11 = 20/2240 = 112

Women = 4 x 112 = 448

Men = 5 x 112 = 560

Children = 11 x 112 = 1232

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3 0
3 years ago
3x+3y+2(2x-y) equivalent fractions to this problem
Anastaziya [24]
Distribute the 2 into the 2x and -y

Then add “like terms” which are 3x and 4x... 3y and -2y

Which then becomes 7x+y

There are no more “like terms” so that is your final answer

6 0
3 years ago
-15.6 = -3.9r<br> please include an explanation of how you got your answer :) thanks
Mumz [18]

Here is the equation:

-15.6 = -3.9r

Since both decimals are negative, the answer will be positive.

  • Negative times Negative = Positive

Divide both sides by -3.9 to leave the variable alone:

-15.6 \div -3.9  = -3.9r \div -3.9 \\ 4 = r

r is equal to 4 → r = 4

5 0
3 years ago
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