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algol13
3 years ago
5

Y=x^2-2x+8 what is the symmetry

Mathematics
1 answer:
ivann1987 [24]3 years ago
8 0
A graph shows the line of symmetry is x=1.


_____
For y = ax² +bx +c, the line of symmetry is x = -b/(2a). You have a=1, b=-2, so this formula gives the line of symmetry as
  x = -(-2)/(2(1)) = 2/2
  x = 1

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the ratio of the number of cookies baked by anna, danny, and liesa was 5:4:2. after anna ate 30 of her own cookies and danny ate
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harkovskaia [24]

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Step-by-step explanation:

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Read 2 more answers
What is the unit rate of 13/2 pounds per 3/4 quart?
kodGreya [7K]

Answer:

26/3 or 8.66666 (8.6 with a line over the 6)

Step-by-step explanation:

According to the problem, 13/2 pounds is only 3/4 of a quart. A unit rate, however, has a denominator value of 1. To solve this question, we must change the value of 3/4 to 1.

The first step to this is changing 3/4 to 1/4. This means affecting the value 13/2 pounds. 1/4 is a third of 3/4. We must find a third of 13/2 to properly change this relationship. So, we should do 13/2 ÷ 3. This can also be written as 13/2*3. So, a third of 13/2 is 13/6. Our new relationship is 13/6 pounds = 1/4 quart.

Now, we can multiply 13/6 and 1/4 by 4 to get ? and 4/4, or 1. We can multiply the numerator by 4 to finish this step. 13/6 becomes 13*4/6, which equals 52/6. 52/6 can be divided by 2 to simplify the fraction and becomes 26/3.

So, the <em>unit rate of 13/2 pounds per 3/4 quart is 26/3</em>. 26/3 can also be written as 8.66666, or 8.6 with a line over the 6, in decimal form.

3 0
3 years ago
If you add 20% of a number to the number itself what percent of the result would you have to subtract
Alina [70]
N+ 0.2n = 1.2nn = (1.2n) - (1/6)*(1.2n)
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5 0
3 years ago
If x Is a real number such that x3 = 64, the x2 + x equals what?
Annette [7]

Answer:

20

Step-by-step explanation:

Assuming that the equation is x³ = 64, that can be solved by putting cube root on both sides like so: ∛(x³) = ∛64, which simplifies to <em>x = 4</em>.

Plugging that into our expression gives us <em>4² + 4</em>, which is 20.

7 0
3 years ago
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