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Semmy [17]
3 years ago
8

Build an equation with at least three different operations that has solution x=2

Mathematics
1 answer:
spayn [35]3 years ago
8 0

Answer: (10x+7)/2 = -13/2

This is not the only answer possible. There are infinitely many possible answers.

=================================

Explanation:

We start with the given equation x = -2

Multiply both sides by some number. I'll pick 10

So if we multiply both sides by 10, we get

10*x = 10*(-2)

10x = -20

Now let's add something to both sides. Let's say we add 7 to both sides

10x+7 = -20+7

10x+7 = -13

Finally, let's divide both sides by 2

(10x+7)/2 = -13/2

You could keep going to add, subtract, multiply, or divide both sides by some number. This process can continue indefinitely. I'll stop here since we have three operations done.

-------------------

If we were to solve (10x+7)/2 = -13/2, we would get to x = -2

To solve (10x+7)/2 = -13/2, we follow the steps done in the previous section in reverse.

So we'll undo the "divide both sides by 2" operation by multiplying both sides by 2.

Then we'll undo the "add 7 to both sides" operation to subtract 7 from both sides

Lastly, we'll undo the "multiply both sides by 10" by dividing both sides by 10.

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Serhud [2]

Answer:

152

Step-by-step explanation:

12+16=28 so 180 is the total and 180-28=<u>152</u>

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3 0
3 years ago
Three coins are tossed. Each coin has a Head and a Tail. Find the probability of getting three tails. Write answers as a simplif
Ket [755]

Your answer would be 1/8.

The probability for getting a tail one time would be 1/2 because there are only 2 sides of a coin. Since tossing one coin doesn't affect the outcome of tossing the other coins, the probability for getting a tail on all of the coins is 1/2 each. We want this to happen 3 times, so the answer would be 1/2 × 1/2 × 1/2 = 1/8.

I hope this helps!

3 0
3 years ago
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Given the expression 12C7, which of the following scenarios could this combination represent?
jok3333 [9.3K]

Answer: B

<u>Step-by-step explanation:</u>

₁₂C₇ is read as "12 choose 7" which means you are choosing 7 out of 12. Since it is a combination and not a permutation, order does not matter.

6 0
3 years ago
Please helpp me with this asap
kirill115 [55]
I think it 0.64 because if you think about it 6 marble in the pouch won’t be enough for 2.5 gram of vintage glass so instead try to put in and see how much it fit. 3.14 - 2.6 = 0.64
8 0
3 years ago
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Show Your Knowledge
crimeas [40]

9514 1404 393

Answer:

  • 15 nickels
  • 3 dimes

Step-by-step explanation:

Let d represent the number of dimes Molly has. Then she has 18-d nickels, and the total value (in cents) of her coins is ...

  5(18 -d) +10d = 105

  5d +90 = 105 . . . . . . simplify

  5d = 15 . . . . . . . . . . . subtract 90

  d = 3 . . . . . . . . divide by 5; number of dimes

  18-d = 15 . . . . . number of nickels

Molly has 3 dimes and 15 nickels.

8 0
3 years ago
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