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amm1812
3 years ago
13

Solve the following systems of equations. y = -x2+2x+1 y = 2x+1

Mathematics
1 answer:
boyakko [2]3 years ago
7 0

Answer:

I think it's (0,1) x=0, y=1

Sorry if that's wrong

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I need the solution
Kazeer [188]
24 beats per minute      
5 0
3 years ago
I need help with this onehelp me please I have to show work too
adoni [48]
Correct, because $.6 per ounce works for all of the number of ounces. Times 0.6 for all of the number of ounces on the left side (5,10,15,20) to find the result (cost of detergent)

y=.6x
8 0
4 years ago
A radioactive substance decays exponentially. A scientist begins with 190 milligrams of a radioactive substance. After 19 hours,
Lelu [443]

Answer:

  51 milligrams

Step-by-step explanation:

Exponential growth or decay can be modeled by the equation ...

  y = a·b^(x/c)

where 'a' is the initial value, 'b' is the "growth factor", and 'c' is the time period over which that growth factor applies. The time period units for 'c' and x need to be the same.

In this problem, we're told the initial value is a = 190 mg, and the value decays to 95 mg in 19 hours. This tells us the "growth factor" is ...

  b = 95/190 = 1/2

  c = 19 hours

Then, for x in hours the remaining amount can be modeled by ...

  y = 190·(1/2)^(x/19)

__

After 36 hours, we have x=36, so the remaining amount is ...

  y = 190·(1/2)^(36/19) ≈ 51.095 . . . . milligrams

About 51 mg will remain after 36 hours.

8 0
2 years ago
Jenny is making a toilet cleaner from vinegar and water in the ratio of 1 : 5. She starts by mixing 4.5 cups of water with 7 cup
blsea [12.9K]

Answer:

She need need 0.5 more cups of water.

Step-by-step explanation:

If you do 5 - 4.5 it will equal 0.5.

3 0
3 years ago
Using the Pythagorean
miss Akunina [59]

Answer:

  • 13.5 units

Step-by-step explanation:

<u>Use distance formula:</u>

  • d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

<u>Substitute the coordinates:</u>

  • d = \sqrt{(-3-7)^2+(-3-6)^2} =\sqrt{10^2+9^2} =\sqrt{181} =13.5 rounded
4 0
2 years ago
Read 2 more answers
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