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Leni [432]
2 years ago
11

There are 15 boys and 13 girls in a class. what are the probabilities of choosing a boy? answer as decimal

Mathematics
1 answer:
Aleksandr [31]2 years ago
6 0

Answer:

0.54 chance

Total boys: 15

Total girls: 13

Total students: 15 + 13 = 28

\frac{boys}{students} = 15/ 28

15 divided by 28 equals: 0.53571...

Round it to the nearest hundredth:

0.54 (54%)

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To one-one functions g and h are defined as follows.
Andreyy89

Answer:

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Step-by-step explanation:

The inverse function for a set of ordered pairs can be found by swapping the x- and y-coordinates in each pair.

  g^{-1}(-1)=9\qquad\text{from the $g(x)$ ordered pair $(9, -1)$}

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The inverse of a function expressed algebraically can be found by swapping the x- and y-variables and solving for y.

  h^{-1}(x)\qquad\text{is found from }x=h(y)\\\\x=3y+8\\x-8=3y\\\\y=\dfrac{x-8}{3}\\\\\boxed{h^{-1}(x)=\dfrac{x-8}{3}}

A function of its own inverse returns the original value:

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3 years ago
Y=4x-9 <br> complete the missing value in the solution to the equation <br> (3,__)
kozerog [31]
So we need to plug in our values so now y=4(3)-9 so 4*3 is 12 now we have y=12-9 Subtract 12 and nine to get 3 so y equals 3.
The answer is (3, 3). Hope this helped please look at others answers and check other resources as well
5 0
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Which classification best represnts a triangle with side lengths 10in 12in and 15in
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mel-nik [20]

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Step-by-step explanation:

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3 years ago
PROBLEM 2 The height of a golf ball in feet can be determined using the formula h(t) = -16t2 + 100x , where t is the number of s
wolverine [178]

Answer:

<h3>H. 150 ft</h3>

Step-by-step explanation:

Given the height of a golf ball in feet modelled by the formula h(t) = -16t² + 100x where t is in seconds, we are to find the height of the golf after 2.5 seconds. To do that we will simply substitute t = 2.5secs into the formula given;

h(t) = -16t^2 + 100x\\\\h(2.5) = -16(2.5)^2 + 100(2.5)\\\\h(2.5) = -16(6.25) + 250\\\\h(2.5) = -100+250\\\\h(2.5) = 150\\\\

Hence the height of the golf after 2.5 seconds is 150ft.

8 0
3 years ago
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