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Ganezh [65]
2 years ago
9

Which of the following is a valid use of the associative property of addition?

Mathematics
1 answer:
Ne4ueva [31]2 years ago
5 0
B is the valid use of the associative property of addition
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Eleanor was curious if triangles DEF and GHI were similar, so he tried to map one figure onto the other using rigid transformati
Fiesta28 [93]

Answer:B

Step-by-step explanation:

4 0
3 years ago
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What solution do 2x2 - 13x + 21 = 0 and 2x2 + 9x - 56 = 0 have in common? Round your answer to the nearest tenth if necessary.
lys-0071 [83]
So if we want to know the common solution(s) to a system of 2 equations, So we can just set both equations equal to each other and solve for the x value(s). That’s where I start below;

2x^2-13x+21 = 2x^2+9x-56
2x^2 cancels out and moving everything to one side and anything with an x variable to the other side we have then;
-22x=-77
22x=77 by cancelling the negative signs
x=77/22 therefore x=7/2 or 3.5

Hope this helps you. Any questions please ask.
4 0
3 years ago
A group of people were given a personality test to determine if they were Type A or Type B. The results are shown in the table b
DIA [1.3K]

Answer:

P(Male or Type B) > P(Male | Type B)

Step-by-step explanation:

Total Female = 85 type A, 12 type B  ⇒ 97 Female.

Total Male = 65 type A, 38 type B   ⇒ 103 Male

Total type A = 65 + 85 = 150

Total type B = 12 + 38 = 50

total number of people = 97 + 103 = 200

Then the probability would be:

P(Male | Type B) = \frac{number of male in B}{total number of male}

                           = \frac{38}{103}

                           = 0.368

P(Male or Type B) = \frac{total number of male + (total number of people in B - total number of male in B)}{total number of male}

                              =  \frac{103 + (50 - 38)}{200}

                              = \frac{103 + 12}{200}

                              = \frac{115}{200}

                              = 0.575

 Hence, P(Male or Type B) > P(Male | Type B)

3 0
2 years ago
Which basic geometric term has no width, no length, and no thickness?
sladkih [1.3K]

Answer:

It's easy a point of course !!!!!

8 0
3 years ago
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I need a break down of the answer in fraction form
Flauer [41]
Umm what do you mean?
6 0
2 years ago
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