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kherson [118]
3 years ago
10

What is the axis of symmetry?

Mathematics
1 answer:
jarptica [38.1K]3 years ago
3 0

Answer:

2 or y=2

Step-by-step explanation:

You can find it by calculating -\frac{b}{2a}

- \frac{-20}{10} = 2

The axis of symmetry is 2

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the first term of an arithmetic sequence is 10 and the sum of the first five terms is 250,find the sequence​
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Answer:

The  sequence  is:

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Step-by-step explanation:

We have,

First term (a) = 10

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or, \frac{n}{2} [{2a+(n-1)d}] = 250

or, \frac{5}{2} [2*10 + 4d]=250

or, \frac{5}{2} * 4[5+d]=250

or, 10(5 + d) =250

or, 5 + d = 25

∴ d = 20

Now,

2nd term = a + d = 10 + 20 = 30

3rd term = a + 2d = 10 + 2*20 = 10 + 40 = 50

4th term = a + 3d = 10 + 3*20 = 10 + 60 = 70

5th term = a + 4d = 10 + 4*20 = 10 + 80 = 90

8 0
3 years ago
Odysseus found that his troubles varied directly as his distance from his home island of Ithaca. If he had 20 troubles when he w
Vitek1552 [10]
Lol


trouble varies directly as distance
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given
when t=20, and d=400
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t=(1/20)d

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3 years ago
There were 26 students in the classroom. 14 of the students went to the cafeteria and the rest went to the gym. What percentage
OverLord2011 [107]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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What is the scale factor from triangle PRQ to triangle SUT
Alex

Answer:

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ST = PR

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