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mrs_skeptik [129]
3 years ago
13

What does the symbol ∈ mean

Mathematics
1 answer:
Kazeer [188]3 years ago
8 0
It mean the Element of so x(that symbol) A means x is an element of the set A
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I have no clue how to do this!!!
lara31 [8.8K]
Step One
Find z
All triangles have 180 degrees. No exceptions.
z + 47 + 90 = 180      combine like terms on the left.
z + 137 = 180            subtract 137 from both sides
z =  180 - 137        
z = 43 degrees.

Step Two
Use the sine function to find y
Sin(43) = opposite side / hypotenuse
opposite side = 35 

sin(43) = 35 / hypotenuse
hypotenuse = 35 / sin(43)
y = 35/0.6820
y = 51.32 

Solve using cos(x)
Note this problem could have been done in a shorter way.
Cos(47) = adjacent / hypotenuse.
hypotenuse = adjacent / cos(47)
y = 35 / cos(47)
y = 35 / 0.6820
y = 51.32 Both answers agree. It is a good thing to know how to do this question both ways.
5 0
3 years ago
What is the radius of a circle whose equation is (x-7)2+(y-10)2=4
Drupady [299]
Did you try the square root of 4? 2?
7 0
3 years ago
Read 2 more answers
F(x)=1/2x+2.i need help
m_a_m_a [10]

Answer: If you want to find the x and y intercepts, your answer would be...

x-intercept - (-4,0)

y-intercept - (0,2)

Step-by-step explanation:

To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.

I hope this helps you out! ☺

8 0
3 years ago
Pls help me find perimeter and area, id really appreciate it. thank u!
Agata [3.3K]
Perimeter =  9 + 13 + 6 = 28 m

area = 1/2 x 9 x 5.3 = 23.85 square m
8 0
3 years ago
HELP ME PLEASE!!!!!!!
kotegsom [21]

Answer:

1. (0,0) (3,1) (6,2)

2. proportinal

3. im so sorry but i cant see that one i really am sorry!

Step-by-step explanation:

i hope i helped brainliest?

3 0
3 years ago
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