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Leno4ka [110]
3 years ago
12

What is the probability of correctly guessing at random exactly 5 correct answers?round your answer to the nearest whole number.

Mathematics
1 answer:
Reil [10]3 years ago
8 0

Answer: There are 20 sets of numbers in the picture, one set is all 1's, which would be having all 5 answers correct.

Divide 1 by 20 to get 5%.

The answer is A.

Step-by-step explanation:

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The vertex of this parabola is at (2, -4). When the y-value is -1, the x-value is 3. What is the coefficient of the squared term
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Answer:

3

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (2, - 4) , thus

y = a(x - 2)² - 4

To find a substitute (3, - 1 ) into the equation

- 1 = a(3 - 2)² - 4 ( add 4 to both sides )

3 = a

Thus

y = 3(x - 2)2 - 4 ← equation in vertex form

   = 3(x² - 4x + 4) + 4

    = 3x² - 12x + 12 + 4

     = 3x² - 12x + 16 ← equation in standard form

with coefficient of x² term = 3

5 0
3 years ago
a pond is being dug according to plans that have a scale of 1 inch= 6.5 feet. The maximum distance across the pond is 9.75 inche
cestrela7 [59]

We are given a scale that for every 1 in on the plan, the actual length will 6.5 ft. 

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We can visualize this a different way

1 in = 6.5 ft

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And from here it's a little more clear to see what needs to be done. 

Hope this helped! 

6 0
3 years ago
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Standard form would be
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A ramp is 17 feet long, rises 8 feet above the floor, and covers a horizontal distance of 15 feet, as shown in the figure. The r
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In the given question, it is given that

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tan B = \frac{8}{15}

And that's the required missing ratio for tan B .


3 0
3 years ago
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