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2 years ago

Is this correct?! Correct me if i am wrong!

Mathematics

2 answers:

katrin [286]2 years ago

7 0

Answer:yes i think

Step-by-step explanation:

Trava [24]2 years ago

4 0

Yes! Keep up the great work!

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Monique is going to give away 35% of her orange harvest to her neighbors. If she picked 480 oranges, how many will she be giving

chubhunter [2.5K]

Answer:

168

Step-by-step explanation:

Figure out 10% which is 48

Times by 3 to get 30% 144

then half 48 to get 5% which is 24

7 0

2 years ago

Find the exact value expression. tan^-1 (0)

Nezavi [6.7K]

Zero. The negative one means arctan. Arctan times 0 is 0.

3 0

3 years ago

Read 2 more answers

At a soccer tournament 12 teams are wearing red shirts, 6 teams are wearing blue shirts, 4 teams are wearing orange shirts and 2

earnstyle [38]

Answer:

24 blank shirts

Step-by-step explanation:

I'm guessing you're asking for blank shirts. 12+6+4+2=24. 24 teams so far, but there are the blank shirts.

(24+b)/2=b. Multiply by 2

=24+b=2b. Subtract b

24=b

8 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

2 years ago

7 - (-11) = _ Please help having trouble with answer

stepladder [879]

Use long addition to evaluate: the answer is 18

8 0

2 years ago