Ask question

Ask question

All categories

nataly862011 [7]

2 years ago

14

A survey of students' favorite sports was taken from a random sample of

1 answer:

White raven [17]2 years ago

6 0

Answer:

129

Step-by-step explanation:

Considering the survey to be representative, you can simply multiply the share of students <em>p</em> preferring “Track & Field” with the whole school population at the same time to estimate the number of such students in the whole school.

First we need to find the relative share <em>p</em> of such answers in the study by dividing it by the sum of answers, assuming that the table is complete for that random sample:

<em>p</em> = 4/(8 + 5 + 4) = 4/17

Then for the whole school we get 550 <em>p</em> ≈ 129.4

You might be interested in

In general, the intercept of the function F(X) = a•b^x is the point

Murljashka [212]

Answer:

$(0,a)$

Step-by-step explanation:

Given

$f(x) = ab^x$

Required

Determine the intercept

The intercept is at point: $x = 0$

So, we have:

$f(0) = ab^0$

$f(0) = a*1$

$f(0) = a$

So, the intercept is at point $(0,a)$

<em>None of the options is true</em>

7 0

2 years ago

Show the work please help me

stepladder [879]

X=45 since 90-45=45

Hope this helps

8 0

3 years ago

Read 2 more answers

The cost of a gallon of gas increased from $3.54 to $3.87 over the weekend. What is the percent increase for the cost of gas, ro

Dmitrij [34]

Answer:

9%

Step-by-step explanation:

percent increase is calculated as

$\frac{increase}{original}$ × 100%

increase = $3.87 - $3.54 = $0.33 , then

% increase = $\frac{0.33}{3.54}$ × 100% ≈ 9% ( to the nearest whole percent )

5 0

1 year ago

Read 2 more answers

Neeeeed helpppppp please

MissTica

Answer:

Scale factor = 7

Step-by-step explanation:

Dilation with scale factor to map HEFG to DABC will be,

Scale factor = $\frac{\text{Dimension of Image DABC}}{\text{Dimension of preimage HEFG}}$

= $\frac{\text{Length of CD}}{\text{Length of GH}}$

Length of CD = Distance between two points C(0, -7) and D(-7, 0)

= $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

= $\sqrt{(-7-0)^2+(0+7)^2}$

= $\sqrt{98}$

= $7\sqrt{2}$

Length of GH = Distance between G(0, -1) and H(-1, 0)

= $\sqrt{(-1-0)^2+(0+1)^2}$

= $\sqrt{2}$

Scale factor = $\frac{7\sqrt{2} }{\sqrt{2} }$

= 7

6 0

3 years ago

A man weighs k kg. He goes on a diet and

Natasha_Volkova [10]

Answer:

His weight is 9/10 of what it used to be before.

Step-by-step explanation:

3 0

3 years ago