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3 years ago

How do you find the area of a square

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

7 0

Answer:

width times length

Step-by-step explanation:

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A skydiver accelerates downward at 8m/s^2 during the first second. Her weight is -540 N. The net force on the skydiver is -290 N

nikdorinn [45]

Answer:

formula of force in mass*acceleration

Step-by-step explanation:

7 0

1 year ago

Solve for y in terms of x. 4y - 2=3(2x + 3y) y=

yaroslaw [1]

Answer: x3y5

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hopefully this helps!

8 0

2 years ago

In a video game clare

dangina [55]

Answer: C=t+50

Step-by-step explanation: This equation means that Clare's score equals Tyler's score plus 50.

Only one choice is correct here.

7 0

2 years ago

Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. Th

denpristay [2]

Answer:

(1) Correct option is B.

(2) Correct option is C.

Step-by-step explanation:

The information provided is:

$n_{1}=200,\ \bar x_{1}=22.7,\ s_{1} = 4.5\\n_{2}=200,\ \bar x_{2}=19.7,\ s_{2} = 4.3$

The (1 - α)% confidence interval for the difference between two mean is:

$CI=\bar x_{1}-\bar x_{2}\pm t_{\alpha/2, (n_{1}+n_[2}-2}\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}} }$

The critical value of t is:

$\alpha /2=0.05/2=0.025$

degrees of freedom $=n_{1}+n_{2}-2=200+200-2=398$

$t_{\alpha/2, n_{1}+n_{2}-2}=t_{0.025, 398}=1.96$

Compute the 95% confidence interval for the difference between two mean as follows:

$CI=22.7-19.7\pm 1.96\sqrt{\frac{4.5^{2}}{200}+\frac{4.3^{2}}{200} }\\=3\pm0.8624\\=(2.1376, 3.8624)\\\approx(2.14, 3.86)$

Thus, the 95% confidence interval, (2.14, 3.86) implies that the true mean difference value is contained in this interval with probability 0.95.

Correct option is B.

The null value of the difference between means is 0.

As the value 0 is not in the interval this implies that there is a difference between the two means, concluding that priming does have an effect on scores.

Correct option is C.

4 0

3 years ago

Nita wants to buy a new keyboard for her computer. She will buy the keyboard when it is on sale for under $50 Write an inequalit

adoni [48]

This would be k < 50.

This inequality states that k, the price at which Nita wants to buy the new keyboard, is less than 50 dollars.

3 0

3 years ago

Read 2 more answers