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kondaur [170]
3 years ago
11

A parabola opening up or down has vertex (0, 3) and passes through (-10, -2). Write its

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
7 0

Answer:

y = -1/20x^2 + 3.

Step-by-step explanation:

The vertex form is:

y = a(x - 0)^2 + 3

When x = -10 y = -2, so:

-2 = a(-10)^2 + 3

-2 = 100a + 3

100a = -5

a = -1/20.

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The diameter of a cone is 15 meters, the height is 1.5 times the radius, what is the volume?​
Fynjy0 [20]

Answer:

V ≈ 662.68

Step-by-step explanation:

15 div by 2 = 7.5 (Radius)

7.5 x 1.5 = 11.25 (height)

Pi x 7.5^2 x 11.25/3
= 662.68

5 0
2 years ago
If A and B are independent events and P(A)=0.25 and P(B)=0.333, what is the probability P(ANB)?
Pachacha [2.7K]

The probability P(ANB), that is, P(A ∩ B), given that A and B are independent events and P(A) = 0.25 and P(B) = 0.333 is <u>0.08325</u>. Hence, <u>option C</u> is the right choice.

For any two events A and B, the probability of event A and B, that is, P(A ∩ B) is given as:-

  1. When the events are dependent, P(A ∩ B) = P(A).P(B|A).
  2. When the events are independent, P(A ∩ B) = P(A).P(B).

In the question, we asked the probability P(ANB), that is, P(A ∩ B), given that A and B are independent events and P(A) = 0.25 and P(B) = 0.333.

We know that when the events are independent, P(A ∩ B) = P(A).P(B).

Thus, P(A ∩ B) = (0.25)*(0.333),

or, P(A ∩ B) = 0.08325.

Thus, the probability P(ANB), that is, P(A ∩ B), given that A and B are independent events and P(A) = 0.25 and P(B) = 0.333 is <u>0.08325</u>. Hence, <u>option C</u> is the right choice.

Learn more about the probability of independent events at

brainly.com/question/12783373

#SPJ4

8 0
2 years ago
1. A fast food outlet claims that the mean waiting time in line is less than 3.8 minutes. A random sample of 60 customers has a
kolezko [41]

Answer:

There is no significant evidence to conclude that the mean waiting time is less than 3.8 minutes

Step-by-step explanation:

H0 : μ = 3.8

H1 : μ < 3.8

Test statistic :

(x - μ) ÷ s/sqrt(n)

(3.7 - 3.8) ÷ 0.6/sqrt(60)

Test statistic = - 1.29

The Pvalue from test statistic :

P(z < -1.29) = 0.0985

Reject Null if

Pvalue < α

0.0986 > 0.01 ; Hence, we fail to reject the null ;

There is no significant evidence to conclude that the mean waiting time is less than 3.8 minutes

7 0
3 years ago
Solve for -3 (x+2) + 5x 8
sleet_krkn [62]
40 because it’s just 40
3 0
4 years ago
-5x + 8 + 12x + 10<br> Can someone simplify this?
Vitek1552 [10]

Answer:

7x+18

Step-by-step explanation:

5 0
3 years ago
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