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LenKa [72]
3 years ago
15

How would i find y i need helppp

Mathematics
1 answer:
Jet001 [13]3 years ago
3 0

Answer:

C

Step-by-step explanation:

sin30° = y/6

sin30° = 1/2

y/6 =  1/2

y = 3

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Can someone help me please
aleksklad [387]

9514 1404 393

Answer:

 IS a parallelogram

Step-by-step explanation:

The slope formula for the slope of the line between points (x1, y1) and (x2, y2) is ...

  m = (y2 -y1)/(x2 -x1)

The distance formula for the length of that same line is ...

  d = √((x2 -x1)^2 +(y2 -y1)^2)

Here, you're asked to use each of these formulas 4 times, once for each side of the quadrilateral. I find it convenient to let a calculator or spreadsheet do the repetitive calculations. The result is attached.

The attachment shows that opposites sides have the same length and slope, so are parallel. The quadrilateral is a parallelogram. (The two points used in each calculation are the ones on the result line and the line immediately below. That is why point B is copied to the end of the list.)

_____

<em>Additional comments</em>

There are much simpler ways to prove the figure is a parallelogram. My favorite is to add the coordinates of the end points of the diagonals:

  B +D = (-2+6, -9-3) = (4, -12)

  C +E = (0+4, -5-7) = (4, -12)

These values being the same demonstrates the midpoints of the diagonals are coincident. That will only be the case if the quadrilateral is a parallelogram.

__

If you must use slope and distance formulas, showing either pair of opposite sides is parallel and have the same length is sufficient to guarantee that the other two sides are also parallel and have the same length. That is, the calculations required in this problem only need to be applied to one pair of opposite sides. (Using a spreadsheet, it's not a lot of extra work to do the calculations for both pairs of opposite sides.)

7 0
2 years ago
Use a factor and zero product property to solve the following equation 6x(x+4)=0
Rina8888 [55]
6x(x+4)=0 \\&#10;6x=0 \ \lor \ x+4=0 \\&#10;x=0 \ \lor \ x=-4 \\&#10;\boxed{x=0 \hbox{ or } x=-4}
4 0
3 years ago
The Key Club has 35 members. There are three more girls than boys. Write and solve a system of
Troyanec [42]

Answer:

19 girls

Step-by-step explanation:

Since there are 3 more girls than boys, 35-3=32

32/2=16

Now add back the 3

16+3=19

5 0
3 years ago
Read 2 more answers
If you know this could you help me?
liq [111]

Answer:

Equation : y = -0.5x − 8

Step-by-step explanation:

because i grabbed two points and plugged them in im not very good at explaining but im 99% sure thats right

4 0
2 years ago
The measure of a square wall is 9 feet 7 inches on each side. Estimate the square feet a painter would have to cover to the near
Nookie1986 [14]
First, convert those inches to feet. 
7in =ish 0.5833333
(you find this by dividing 7/12 on a calculator)
Now you just square 9.583333333
9.583333333^2
9.583333333 * 9.583333333
91.84027777ish
Rounded to the nearest foot, means the answer is 92ft.
5 0
3 years ago
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