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3 years ago

I NEED HELP PLEASE ASAP!!

Mathematics

1 answer:

MrMuchimi3 years ago

6 0

Answer:

A correct!!!

Step-by-step explanation:

Usatestprep

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A sample of 200 college freshmen was asked how many hours per week they spent playing video games. The following frequency distr

JulsSmile [24]

Answer:

$\% Below\ 50 = 88 \%$

$\% 43\ or\ more = 17 \%$

Step-by-step explanation:

Given

$Total = 200$

<em>The attachment presents the table properly</em>

Solving (a): Percentage of those who play for less than 50 hours weekly

To do this, we simply consider the frequency of students that fall within:

1.0 - 7.9, 8.0 - 14.9,......,43.0 - 49.9

Their frequency is:

$Frequency = 21 + 37 + 40 + 27 + 23 + 18 + 10$

$Frequency = 176$

The percentage is then calculated as:

$\% Below\ 50 = \frac{Frequency}{Total} * 100\%$

$\% Below\ 50 = \frac{176}{200} * 100\%$

$\% Below\ 50 = \frac{176* 100}{200} \%$

$\% Below\ 50 = \frac{176* 1}{2} \%$

$\% Below\ 50 = \frac{176}{2} \%$

$\% Below\ 50 = 88 \%$

Solving (b): Percentage of those who play for 43 or more hours weekly

To do this, we simply consider the frequency of students that fall within:

43.0 - 49.9,......,64.0 - 70.9

Their frequency is:

$Frequency = 10 + 7 + 5+12$

$Frequency = 34$

The percentage is then calculated as:

$\% 43\ or\ more = \frac{Frequency}{Total} * 100\%$

$\% 43\ or\ more = \frac{34}{200} * 100\%$

$\% 43\ or\ more = \frac{34* 100}{200} \%$

$\% 43\ or\ more = \frac{34* 1}{2} \%$

$\% 43\ or\ more = \frac{34}{2} \%$

$\% 43\ or\ more = 17 \%$

7 0

3 years ago

5. Which of the following shows 12/28 written in prime factored form to help in reducing the fraction to simplest form?

Simora [160]

Answer: A. _3x2x2____

7x2x2

Step-by-step explanation:

given fraction 12/28

here is the numerator = 12 = 2x2x3

here is the Denominator = 28 = 2x2x7

the prime factorization simplest form is _12_= _2x2x3______

28 7x2x2

the simplest form is 12/28 is 3/7

Mark me as brainliest

4 0

3 years ago

What is the value of p in the equation below?

stepladder [879]

Answer:

p = 8

Step-by-step explanation:

3x2 x 2x4 = px6

6 × 8 = 6p

48 = 6p

p = 48/6

p = 8

hope it helps!

3 0

3 years ago

Identify the vertex, focus, and directrix of the parabola with the equation x^2-6x-8y+49=0

NeTakaya

Get it in form 4P(y-k)=(x-h)^2
add 8y to both sides
x^2-6x+49=8y
complete the square
-6/3=-3, (-3)^2=9
(x^2-6x+9)+40=8y
(x-3)^2+40=8y
minus 40 both sides
(x-3)^2=8y-40
undistribute 8 on right side
(x-3)^2=(y-5)8
4P(y-k)=(x-h)^2
4(2)(y-5)=(x-3)^2

(h,k) is center
p is distance from vertex to directix and also from vertex to focus
p=2
vertex=(3,5)
in that form, the prabola opens up so
directix is 2 below vertex
focus is 2 above vertex
up and down is y so
5-2=3
5+2=7

directix is y=3
focus=(3,7)
vertex=(3,5)

5 0

3 years ago

Read 2 more answers

Simplify the expression <br> 3-(2x+5)

Zigmanuir [339]

Answer:

-2x - 2

Step-by-step explanation:

Step 1: Write expression

3 - (2x + 5)

Step 2: Distribute negative

3 - 2x - 5

Step 3: Combine like terms

-2x - 2

8 0

4 years ago