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docker41 [41]
3 years ago
14

How can you decide which operation to use to solve a problem?

Mathematics
1 answer:
almond37 [142]3 years ago
7 0

Answer:

it you're asking for like an equation like "4x +3 = 15 " then you do the opposite of what the equation is doing. Basically undoing the problem to get back to the roots of it. like for the example i provided you would subtract 3 from both sides, because it was added originally. then you would divide both sides by 4 because originally you were multiplying.

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Solve the equation. |x + 5| = 9 {–4, 14} {–14, 4} {4, 14} {–14, –4}
inna [77]

Answer:

{-14, 4}

Step-by-step explanation:

the absolute value function only makes sure that the result always has a positive sign.

so, (x + 5) must be either +9 or -9 to make the original equation true. the absolute value would turn both into +9.

so,

x + 5 = 9

x = 4

and

x + 5 = -9

x = -14

that gives us the correct set of solutions as indicated above.

6 0
3 years ago
Aditi bought 20 apples at Rs 25 each and sold them at Rs 32 each. What is her total profit?​
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Step-by-step explanation: 25x20=500

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1 year ago
How many solutions exist for the given equation?
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Answer: X = 2

Step-by-step explanation:

Step 1: Simplify both sides of the equation!

Step 2: Subtract 4x from both sides.

Step 3: Subtract 6 from both sides.

Step 4: Multiply both sides by 2/(-7).

3 0
3 years ago
River C is 500 miles longer than River D. If the sum of their lengths is 5,560 miles, what is the length of each river?
AleksAgata [21]

Answer:

River D: 2780 River C: 2280

Step-by-step explanation:

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The answer is 1753...
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Read 2 more answers
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