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4 years ago

Can someone help me step by step find the value of x??

Mathematics

1 answer:

Anettt [7]4 years ago

3 0

Okay all triangles add up to 180 degrees. So subtract 38 from 180 and since the other angles are congruent divide by two. X=71

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GIVING BRAINLY

Virty [35]

Step-by-step explanation:

The only difference between ultimate Frisbee and basketball is the equipment; instead of using a ball, a disc is used; however, either way it is the same concept. That way, if young athletes play this game in your next practice, they may also develop an interest in ultimate Frisbee and it may be something they explore later on in their athletic careers.

The premise of this game is to pass the ball into the opposing team’s endzone and score the most points. The offensive players are not allowed to dribble the ball or allow the ball to touch the ground, if that does happen it results in a change of possession and turnover. I think this game is a fun way to teach the young athletes how to pass the ball around to their teammates and how to move to open spaces on the court. By playing this game in your practice, you are working on basketball-specific skills, but also teaching young children a sport they may have never heard of or played before; therefore, creating exposure to new activities.

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3 years ago

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Shun is going to flip a fair coin 450 times.

Allisa [31]

Answer:

Close to around 225 times

Step-by-step explanation:

If the coin Shun is flipping is 2 sided the most linear anwser would be to make the prediction of it flipping on the tails side for a perfect total of 225.

6 0

4 years ago

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3. In the following equation, what is the y-intercept? y = -3x + 7

aev [14]

Answer:

the y intercept at this point is 7

Step-by-step explanation:

hope this helps comment if not

5 0

3 years ago

Location is known to affect the number, of a particular item, sold by an automobile dealer. Two different locations, A and B, ar

yKpoI14uk [10]

Answer:

We conclude that the true mean number of sales at location A is fewer than the true mean number of sales at location B.

Step-by-step explanation:

We are given that Location A was observed for 18 days and location B was observed for 13 days.

On average, location A sold 39 of these items with a sample standard deviation of 8 and location B sold 49 of these items with a sample standard deviation of 4.

Let $\mu_1$ = true mean number of sales at location A.

$\mu_2$ = true mean number of sales at location B

So, Null Hypothesis, $H_0$ : $\mu_1-\mu_2\geq0$ or $\mu_1 \geq \mu_2$ {means that the true mean number of sales at location A is greater than or equal to the true mean number of sales at location B}

Alternate Hypothesis, $H_A$ : $\mu_1-\mu_2$ or $\mu_1< \mu_2$ {means that the true mean number of sales at location A is fewer than the true mean number of sales at location B}

The test statistics that would be used here Two-sample t test statistics as we don't know about the population standard deviations;

T.S. = $\frac{(\bar X_1-\bar X_2)-(\mu_1-\mu_2)}{s_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2} } }$ ~ $t_n__1_-_n__2-2$

where, $\bar X_1$ = sample average of items sold at location A = 39

$\bar X_2$ = sample average of items sold at location B = 49

$s_1$ = sample standard deviation of items sold at location A = 8

$s_2$ = sample standard deviation of items sold at location B = 4

$n_1$ = sample of days location A was observed = 18

$n_2$ = sample of days location B was observed = 13

Also, $s_p=\sqrt{\frac{(n_1-1)s_1^{2}+(n_2-1)s_2^{2} }{n_1+n_2-2} }$ = $\sqrt{\frac{(18-1)\times 8^{2}+(13-1)\times 4^{2} }{18+13-2} }$ = 6.64

So, test statistics = $\frac{(39-49)-(0)}{6.64 \times \sqrt{\frac{1}{18}+\frac{1}{13} } }$ ~ $t_2_9$

= -4.14

The value of t test statistics is -4.14.

Now, at 0.01 significance level the t table gives critical value of -2.462 at 29 degree of freedom for left-tailed test.

Since our test statistics is less than the critical values of t as -2.462 > -4.14, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that the true mean number of sales at location A is fewer than the true mean number of sales at location B.

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3 years ago

Which number will make the fractions equal? 5/10=?/100

Mashcka [7]

50 hopefully this will help you

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3 years ago

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