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Alexxx [7]
3 years ago
9

State whether the triangles are similar. If so, write a similarity statement and the postulate or theorem you used.

Mathematics
2 answers:
BARSIC [14]3 years ago
7 0

I just did the JMHS quiz and the answer is not Helen's or ABD ~ CDB; SAS~.

The correct answer is either ADB ~ CDB; SAS ~ or SSS~.

ratelena [41]3 years ago
6 0
I believe the triangles are not similar. In order for the triangles to be similar, they would either need one more set of sides or angles to be congruent, but they only have one set of angles and one set of sides congruent. I am not entirely sure I am correct
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Which expression shows (3*100)+(5*10)+(5*1/10) in standard form?​
Ivenika [448]

Answer:

Step-by-step explanation: 3 x 100 + 4 x 10 + 5 x 1 Standard form is the reverse ...

7 0
3 years ago
Consider the sequence 3, -9, 27, -81 what an explicit formula for the sequence
Nataly_w [17]
-(-3)power (n )
n is 1;2;3;4;....

6 0
3 years ago
A researcher selects two samples of equal size and computes a mean difference of 1.0 between the two sample means. If the pooled
s344n2d4d5 [400]

Answer:

The Cohen's D is given by this formula:

D = \frac{\bar X_A -\bar X_B}{s_p}

Where s_p represent the deviation pooled and we know from the problem that:

s^2_p = 4 represent the pooled variance

So then the pooled deviation would be:

s_p = \sqrt{4}= 2

And the difference of the two samples is \bar X_a -\bar X_b = 1, and replacing we got:

D = \frac{1}{2}= 0.5

And since the value for D obtained is 0.5 we can consider this as a medium effect.  

Step-by-step explanation:

Previous concepts

Cohen’s D is a an statistical measure in order to analyze effect size for a given condition compared to other. For example can be used if we can check if one method A has a better effect than another method B in a specific situation.

Solution to the problem

The Cohen's D is given by this formula:

D = \frac{\bar X_A -\bar X_B}{s_p}

Where s_p represent the deviation pooled and we know from the problem that:

s^2_p = 4 represent the pooled variance

So then the pooled deviation would be:

s_p = \sqrt{4}= 2

And the difference of the two samples is \bar X_a -\bar X_b = 1, and replacing we got:

D = \frac{1}{2}= 0.5

And since the value for D obtained is 0.5 we can consider this as a medium effect.  

7 0
3 years ago
Which vector best describes the translation below?
Nimfa-mama [501]
<h3>Answer: Choice A)  <9,0></h3>

Explanation:

Focus on one of the points in the figure on the left. Let's say we go for the upper left corner point (-7, 4)

Notice it moves to the corresponding image point (2,4). It has shifted 9 units to the right to follow the translation rule (x,y) \to (x+9, y). We've added 9 to the x coordinate, and the y coordinate stays the same.

This notation can be shortened to <9, 0>

In general, the notation (x,y) \to (x+a, y+b) is shortened to the translation vector notation < a, b >. In this case, a = 9 and b = 0.

8 0
2 years ago
I have 10 dollars and my brother has 25 dollars. How much will I have if he gives me 15 dollars?
kotykmax [81]

you will have 25 dollars 10+15=25

4 0
3 years ago
Read 2 more answers
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