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defon
3 years ago
8

Please answer quickly thanks :) good morning btw

Mathematics
1 answer:
Alisiya [41]3 years ago
8 0

1. 1/9

2. 0

3. -9

4. -1

Reasoning: To get the opposite of a number just add a negative sign or take it away. This can be done to all numbers other than 0

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Suppose a local park is rectangular in shape and has a length of 210 yards and a width of 105 yards. What is the length of the d
Otrada [13]

Answer:

234.784 ~ 235

Step-by-step explanation:

One side = 210

other side = 105

a2+b2 = c2

210 ^2 + 105 ^2 = c2

55125 = c ^2

c = \sqrt{55125} = 234.784 ~ 235

hope its right!!!

7 0
3 years ago
A​ 9-year-old girl did a science fair experiment in which she tested professional touch therapists to see if they could sense he
Orlov [11]

Answer:

We conclude that the the touch therapists does not use a method equivalent to random guesses.

Yes, the results suggest that touch therapists are​ effective.

Step-by-step explanation:

We are given that in a 9-year-old girl did a science fair experiment in which she tested professional touch therapists to see if they could sense her energy field.

Among 264264 ​trials, the touch therapists were correct 105105 times.

<u><em>Let p = proportion that touch therapists uses a random guess method.</em></u>

Here, random guess means; p = 50%

So, Null Hypothesis, H_0 : p = 50%     {means that the touch therapists use a method equivalent to random guesses}

Alternate Hypothesis, H_A : p \neq 50%     {means that the touch therapists does not use a method equivalent to random guesses}

The test statistics that would be used here <u>One-sample z proportion statistics</u>;

                         T.S. =  \frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p  = sample proportion of touch therapists were correct = \frac{105}{264} = 0.39

            n = sample of trials = 264

So, <em><u>test statistics</u></em>  =  \frac{\frac{105}{264} -0.50}{\sqrt{\frac{\frac{105}{264}(1-\frac{105}{264})}{264} } }  

                                =  -3.395

The value of z test statistics is -3.395.

<em>Now, at 0.05 significance level the z table gives critical value of -1.96 and 1.96 for two-tailed test. Since our test statistics does not lie within the range of critical values of z, so we have sufficient evidence to reject our null hypothesis as it will in the rejection region due to which </em><u><em>we reject our null hypothesis</em></u><em>.</em>

Therefore, we conclude that the the touch therapists does not use a method equivalent to random guesses.

Yes, the results suggest that touch therapists are​ effective.

3 0
3 years ago
Turn 15/9 to a decimal
navik [9.2K]

Answer:

1.67 this is rounded but original is just endless 6

Step-by-step explanation:

1 6/9

1 2/3

1.66

Hopes this help please mark brainliest

7 0
1 year ago
What's the answer to this problem
andrey2020 [161]
A, C, and D are true
4 0
3 years ago
The next morning, Charlie got up and went to gather eggs from the chickens. He gathered three eggs from three chickens and 2 egg
ElenaW [278]

Answer: 21 eggs

Step-by-step explanation:

Charlie gathered 3 eggs from each of the three chickens so the total he gathered from chickns is:

= 3 * 3

= 9 eggs

From the 6 turkeys he got:

= 2 * 6

= 12 eggs

Eggs in total:

= 9 + 12

= 21 eggs

6 0
3 years ago
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