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victus00 [196]
3 years ago
5

15-x=2(x+3) I need this solved and show me how you solved it

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
4 0
15 - x = 2(x + 3)
15 - x = 2x + 6
15 = 3x + 6
9 = 3x
3 = x
x = 3
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What like is perpendicular to the Y equals 6/4 X +4
Fofino [41]
Just flip the slope fraction, and make it negative
6 /4 negative reciprocal is -4 / 6
Then replace the slope with the new slope.
y = -4/6 x + 4
4 0
3 years ago
PLEASE HELP!!! <br> Shade 30% of the whole grid.<br> How much blocks do i shade?
Semenov [28]

Answer:

Shade 6

Step-by-step explanation:

There are 20 squares in the grid. Multiply 0.30 (percentages are written as decimals) by 20. There's your answer.

6 0
2 years ago
Bess and Gina earn $45 per week for delivering flowers. Bess worked for x weeks and earned an additional total bonus of $20. Gin
uranmaximum [27]

I think the answer would be 45x+20+45y. That is because Bess and Gina both earn $45 per week. We don't know how many weeks they worked for so that is x for Bess and y for Gina. But then Bess earns $20 bonus so you would add that to how much she already earned. They want to know the total amount of money they both earned together. So that would be 45x+20 (Bess) plus 45y (Gina).

Hope this helps!

5 0
3 years ago
Read 2 more answers
What’s the quotient 630,000 divided by 10 third
Pavlova-9 [17]

Answer:

Its 189000

Step-by-step explanation:

630000 divided by 10/3

630000 times 3

thats 1890000

1890000/10 = 189000

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5 0
2 years ago
Tap A takes 6 minutes to fill a tank and tap b takes 9 minutes to fill the same tank. Pipe C can empty the tank in 15 minutes. H
jekas [21]

Answer:  approximately 4.7368 minutes

This decimal value is the result of computing 90/19

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

Explanation:

Let's find the LCM of 6, 9 and 15. First, list out the prime factorization of each value.

  • 6 = 2*3
  • 9 = 3*3
  • 15 = 3*5

The unique prime factors are 2, 3, and 5. We have 2 show up at most once, 3 show up at most twice, and 5 show up at most once. The LCM is 2^1*3^2*5^1 = 2*9*5 = 18*5 = 90.

We'll use this LCM value to set up an example below.

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

Consider the tank to be 90 gallons. If we only use tap A, keep tap B closed, and don't open pipe C, then tap A fills the tank at a rate of 90/6 = 15 gallons per minute since it needs 6 minutes to completely fill the tank.

If we have tap B do all the work (keep tap A and pipe C closed), then the rate is 90/9 = 10 gallons per minute for this tap.

Keeping pipe C closed, the two taps A and B work together to have a combined rate of 15+10 = 25 gallons per minute.

Now we consider pipe C being opened. This drains the tank and can do so in 15 minutes (assume the taps A and B aren't open). If we're dealing with a full 90 gallon tank, then its rate is 90/15 = 6 gallons per minute.

The net rate is 25-6 = 19 gallons per minute. We can think of it as a tug of war where the taps A and B ultimately win out despite the fact that pipe C is draining the water. The two taps fill the tank faster than the pipe can drain the tank.

In other words, the tank ultimately gets filled up rather than drained out over the long run. That net speed is at 19 gallons per minute.

The amount of time needed is approximately 90/19 = 4.7368 minutes.

Side note: you can start with any size tank. It doesn't have to be 90 gallons. I picked on this value because it works cleanly with the original given numbers 6, 9 and 15.

6 0
3 years ago
Read 2 more answers
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