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Lyrx [107]
3 years ago
14

Use properties of addition to find each sum mentally. Show your steps and identify the properties that you used. 13+29+7=

Mathematics
1 answer:
Arisa [49]3 years ago
6 0
It is 49 i did it like 5 times to check there you go buddy
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Describe a real-world situation that the graph could represent
oee [108]
You could say one person is at 1:5 and say they moved up and up
7 0
4 years ago
What is the domain and range of the set of order pairs? (7,3),(-2,-2),(4,1),(-9,0),(0,7)
erastovalidia [21]

Answer:

Domain {7,-2,4,-9,0} Range {3,-2,1,0,7}

Step-by-step explanation:

Just remember that domain is the x values and the range is the y values.

5 0
3 years ago
6-7 Please help BRAINLEST!
elena55 [62]

Answer:

18

Step-by-step explanation:

25=7+r     25-7=18     7-7=0

r=18 Do you understand? I really hoped I helped. I was in your position when i was learning that.

6 0
4 years ago
Read 2 more answers
1/2 times x = 92<br> please help I do not know how to do this.
77julia77 [94]

Answer:

184

Step-by-step explanation:

1/2 times x = 92

so 1/2 means half so what we do is add 92 to 92 so its 184

8 0
3 years ago
Given tan(A) = 2 and A is in Quadrant I, find sin(2A) and find cos(2A).
artcher [175]
We can use following formula

tan^{2}(A) = \frac{1- cos(2A)}{1+cos(2A)} &#10;\\ \\ tan(A) =2, so&#10;\\ \\4= \frac{1- cos(2A)}{1+cos(2A)} &#10;\\ \\1-cos(2A)=4+4cos(2A) &#10;\\ \\ 5cos(2A) = -3&#10;\\ \\ cos (2A) = -3/5

Now, we need to find sin(2A).

sin^{2}(2A) + cos^{2}(2A) = 1&#10;\\ \\ sin^{2}(2A) + (- \frac{3}{5})^{2} =1&#10;\\ \\ sin^{2}(2A) =1 - \frac{9}{25} &#10;\\ \\ sin^{2}(2A) =  \frac{16}{25} &#10;\\ \\ sin(2A) =  \frac{4}{5}  \ or \  - \frac{4}{5}

Because, the angle A is in the 1st quadrant, and cos(2A) is negative, that means that the angle 2A is in the 2nd quadrant and sin(2A) is a positive number,so sin(2A) = 4/5.


sin(2A) = 4/5
cos(2A) = -3/5
7 0
3 years ago
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