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Tom [10]
3 years ago
15

im almost done with this hw. plz help!!! give explanation if you actually know the answer so ik u dont just want points

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
6 0

Answer:

B

Step-by-step explanation:

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13 of 15
Slav-nsk [51]

Answer:

  1. (√30 - 1, 0)
  2. (-√30 - 1, 0)

Step-by-step explanation:

Making the equation of the parabola :

⇒ y = a(x - h)² + k

⇒ y = (x + 1)² - 17 - 13

⇒ y = (x + 1)² - 30

x-intercepts have y = 0 :

  • 0 = (x + 1)² - 30
  • (x + 1)² = 30

Taking the square root on each side :

  • √(x + 1)² = √30
  • x + 1 = ±√30
  • x = ±√30 - 1

The x-intercepts are :

  1. (√30 - 1, 0)
  2. (-√30 - 1, 0)
7 0
1 year ago
the price of an item has been reduced by 95%. the original price was $75. what is the original sale price
Natalka [10]

3.75$ is the price of the item after the 95% price reduction.

3 0
3 years ago
Hi everyone i got a 16/20 on a final what percent is that im jw
Allushta [10]

Answer:

80%

Step-by-step explanation:

5 0
3 years ago
Work out the area of a circle with a radius 6.2cm, take n/pi to be 3.142 and give your answer to 2 decimal places.
s344n2d4d5 [400]

Answer:

Step-by-step explanation:

Area is pi times r squared.  I don't know how to write that on the keyboard.  Take your pi(3.142) times the radius(6.2)squared.  Pemdas tell us to do exponents first, so 6.2 squared is 38.44.  To square a number, just multiply it times itself.  So now, we have pi(3.142) times the squared radius(38.44).  So, 3.142X38.44=

120.778  Second place is seven followed by eight.  Round up.  120.78

3 0
3 years ago
Find distance in parsec
olganol [36]

1. 200 Parsecs, 652.312 Light years 2. 8 Parsecs, 26.09248 Light years ; Use this formula, p=1/P(parallax), to solve the equation. Then multiply 3.26156 (light years per parsec) by the number of parsecs.

1. p= 1/0.005 = 200*3.26156 = 652.312

200 Parsecs, 652.312 Light years

2. p=1/0.125 = 8*3.26156 = 26.09248

8 Parsecs, 26.09248 Light years

4 0
3 years ago
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