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4 years ago

Probability:

Mathematics

1 answer:

HACTEHA [7]4 years ago

6 0

A: We want to select one person who works out three days a week. Our probability is simply 12/80 ~~ 15%

B: At least 4 days a week means 4 days, 5 days, or 6 days.
Hence, we have: (9 + 20 + 8)/80 = 46%

C: At least once a week.
Let's find out how many DO NOT work out and subtract that from our sample space. This means they must work out at least once a week.

(80 - 15)/80 = 81%

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one section of an auditorium has 12 rows of seats each row has 13 seats what is the total number of seats in that section

Svet_ta [14]

12 x 13 =156
There is 156 seats in that section

8 0

4 years ago

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Explain how to make a precise graph of y = -2x + 3 without making a T-Table.

kifflom [539]

Answer:

x 2 + 5 x + 6

Step-by-step explanation:

y = m x + c

y- intercept

x = 0

y = (-2) (0) + 3

(x =0, y = 3)

<h3>slope -2 </h3><h3>y = -1 x + 3</h3>

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3 years ago

What interger is equivalent to 9 1/2

photoshop1234 [79]

Answer:

None

Step-by-step explanation:

There is no integer equivalent to 91/2, integers can't have a decimal.

However, I assume you would like me to answer 9.5, even though it isn't an integer.

8 0

3 years ago

How do you find the value of c that satisfy the equation:

victus00 [196]

Answer:

The value of c = -0.5∈ (-1,0)

Step-by-step explanation:

<u>Step(i)</u>:-

Given function f(x) = 4x² +4x -3 on the interval [-1 ,0]

<u> Mean Value theorem</u>

Let 'f' be continuous on [a ,b] and differentiable on (a ,b). The there exists a Point 'c' in (a ,b) such that

$f^{l} (c) = \frac{f(b) -f(a)}{b-a}$

<u>Step(ii):</u>-

Given f(x) = 4x² +4x -3 …(i)

Differentiating equation (i) with respective to 'x'

f¹(x) = 4(2x) +4(1) = 8x+4

<u>Step(iii)</u>:-

By using mean value theorem

$f^{l} (c) = \frac{f(0) -f(-1)}{0-(-1)}$

$8c+4 = \frac{-3-(4(-1)^2+4(-1)-3)}{0-(-1)}$

8c+4 = -3-(-3)

8c+4 = 0

8c = -4

$c = \frac{-4}{8} = \frac{-1}{2} = -0.5$

c ∈ (-1,0)

<u>Conclusion</u>:-

The value of c = -0.5∈ (-1,0)

<u></u>

8 0

3 years ago

Okay now using distributive property write 2(4x-9) without parenthesis

riadik2000 [5.3K]

2(4x - 9) =
2 * 4x - 2 * 9 =
8x - 18

Hope this helps!!
~Kiwi

6 0

3 years ago