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djyliett [7]
3 years ago
8

Can someone PLEASE help me with this

Mathematics
2 answers:
shepuryov [24]3 years ago
4 0
The area of triangle ABD is 4.5 cm squared (the last multiple choice option)
Mekhanik [1.2K]3 years ago
3 0

Answer:

4.5 u

Step-by-step explanation:

There are many ways to do it, the most easier is this:

Area=(b*h)/2

Area of ABD = (3*3)/2 = 4.5 u

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True or False: A p is the probability that the results are not due to chance, the probability that the null hypothesis (H0) is f
professor190 [17]

Answer:

False

Step-by-step explanation:?

The hypothesis tests compare weather an event is meant to alter a population mean results, for example, a scientist experiment might have or not have a significant effect over the population results. The test aims to reject the null hypothesis, so what it really want to find out is if the alternative Hypothesis H1 is likely true. The null hypothesis is the probability that the results are not due to chance – if it’s rejected, then the results are due to chance.The level of significance , or so called p-value, is the probability that the null hypothesis (H0) happen , If p is very small then the null hypothesis is rejected - isn’t true- and the alternative Hypothesis is accepted. A higher P value implies a higher probability than results are not happening so that the H0 is accepted and H1 rejected. The null Hypothesis will normally will rejected when the level of significance are either lower than 0.05 or 0.01, the lower P value the higher the level of confidence that the results are due to chance.

Since the first part of the statement (A p is the probability that the results are not due to chance) is correct, and the second part is wrong (…the probability that the null hypothesis (H0) is false), the total statement is false. The correct statement would be as follows : A p is the probability that the results are not due to chance, the probability that the null hypothesis (H0) is true.  

7 0
3 years ago
Can you help me with number 2,3,4,5,6. Don't worry they are only fractions they are not questions that need to be explained. Als
joja [24]
2. 1/3 + 1/3 = 2/3
     2/6 + 2/6 = 4/6 = 2/3
     1/3 + 2/6 = 2/3

3. 3/6 - 2/6 = 1/6             2/2 - 1/2 = 1/2
    2/3 - 1/6 = 1/2             5/6 - 1/2 = 1/3
    
     
8 0
3 years ago
Read 2 more answers
A skateboarding ramp is 12 in. high and rises at an angle of 21​°. How long is the base of the​ ramp? Round to the nearest inch.
bagirrra123 [75]

Answer:

the base of the ramp is 31 inches long.

Step-by-step explanation:

c = a/sin(α)

= 33.48514

b = √c2 - a2

= √33.4851373155042 - 122

= √977.25442103816

= 31.26107

3 0
3 years ago
23 yd
stealth61 [152]
72.22 I think I’m sorry if I’m wrong
4 0
3 years ago
Read 2 more answers
Suppose each square on the grid shown is 1 cm by 1 cm. Estimate the area of the figure.
finlep [7]

Answer:

10cm cm2

Step-by-step explanation:

5 0
3 years ago
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