3 years ago

I don't really understand this can someone explain this to me

Mathematics

1 answer:

azamat3 years ago

8 0

Find the measure of the arc or angle.

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19, find the direction angle of vector v to the nearest tenth of a degree

labwork [276]

The vector v is given by:
v = (7, 2) - (-5, 0)
v = ((7 - (- 5)), (2-0))
v = ((7 + 5), 2)
v = (12, 2)
Then, the angle is given by:
tan (theta) = 2/12
theta = atan (2/12)
theta = 9.46 degrees
Answer:
The direction angle of vector to the nearest tenth of a degree is:
theta = 9.5 degrees

6 0

3 years ago

A set of 3 consecutive integers has a sum of 30. Which integers are they?

riadik2000 [5.3K]

You can only do it like '7.5 plus 9.5 plus 13

8 0

3 years ago

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(b) The arithmetic meană,

Aloiza [94]

Step-by-step explanation:

that it's bad for u if u have it

5 0

3 years ago

Using words, how do you solve for x? <br> -20 = x + 16

nadya68 [22]

-20 = x + 16.....subtract 16 from both sides
-20 - 16 = x....combine like terms
-36 = x

7 0

3 years ago

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Use the diagram of point O. What is the length of OY to the nearest 10th of an Inch? XZ = 10 and OX= 10

Lady bird [3.3K]

From the diagram above,

XZ = 10 in and OX = 10 in

we are to find length of OY

XZ is a chord and line OY divides the chord into equal length

Hence, ZY=YX= 5 in

Now we solve the traingle OXY

To find OY we solve using pythagoras theorem

$(Hyp)^2=(Opp)^2+(Adj)^2$

applying values from the triangle above

$\begin{gathered} OX^2=XY^2+OY^2 \\ 10^2=5^2+OY^2 \\ 100=25+OY^2 \\ OY^2\text{ = 100 -25} \\ OY^2\text{ = 75} \\ OY\text{ = }\sqrt[]{75} \\ OY\text{ = }\sqrt[]{25\text{ }\times\text{ 3}} \\ OY\text{ = 5}\sqrt[]{3\text{ }}in \end{gathered}$

Therefore,

Length of OY =

$5\sqrt[]{3}$

8 0

10 months ago