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3 years ago

Help please im stuck on it!

Mathematics

1 answer:

Colt1911 [192]3 years ago

7 0

Answer:

the answer is 1 because of the odd numbers 11 and 17

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Expanding brackets (2x + 4)(x - 6)

Natalija [7]

Answer:

=2x²-8x-24 is the answer

Step-by-step explanation:

=(2x+4)(x-6)

opening brackets by multiplying

=2x(x-6)+4(x-6)

=2x²-12x+4x-24

adding like terms

=2x²-8x-24

i hope this will help you :)

5 0

3 years ago

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You downloaded a video game to your computer. You have a 60-minute free trial of the game. It takes 5 minutes to set up the game

vlada-n [284]

First you subtract 60-5 to see how much time you will have left to play.
60-5= 55
Then you divide 55/7 to see how many levels you can play for free.
55/7= I got 7.85 (rounded).
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4 0

3 years ago

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A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained p

wel

Answer:

A sample size of 1380 should be obtained.

Step-by-step explanation:

Minimum sample size:

The minimum sample size is of:

$n = (\frac{z}{E})^2(p_1(1-p_1) + p_2(1-p_2))$

In which z is the critical value, related to the confidence level, E is the desired margin of error, $p_1$ and $p_2$ are the proportions.

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

Estimates of 22.6% male and 18.1% female from a previous year

This means that $p_1 = 0.226, p_2 = 0.181$ .

Within 3 percentage points, minimum sample size:

This is n for which $E = 0.03$ . So

$n = (\frac{z}{E})^2(p_1(1-p_1) + p_2(1-p_2))$

$n = (\frac{1.96}{0.03})^2(0.226*0.774 + 0.181*0.819)$

$n = 1379.4$

Rounding up:

A sample size of 1380 should be obtained.

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3 years ago

Write an equation in slope-intercept form from the following points:<br> (-4,6) and (0,7)

Flura [38]

Answer: y = 1/4x + 7

Step-by-step explanation:

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3 years ago

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Sun body please help me ASAPPPP

Fittoniya [83]

Answer:

0.0132575758

Step-by-step explanation:

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3 years ago