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Tomtit [17]
3 years ago
13

I NEED HELP PLZ(what's the answer????)

Mathematics
1 answer:
kogti [31]3 years ago
4 0

Answer: c

Step-by-step explanation:

Multiply the diameter by pi. You got it right

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The vector has components +5 and +7 along the x- and y-axes respectively. along a set of axes rotated 90 degrees counterclockwis
lisabon 2012 [21]
Refer to the diagram shown below.

Let the coordinates of the rotated vector be (a,b).
From the Pythagorean theorem,
d = √(5² + 7²) = 8.6023

The angle θ is given by
tan θ = 7/5 = 1.4
θ = tan⁻¹ 1.4 = 54.46°
φ = 180 - (90 + 54.46) = 35.54°

The coordinates of the rotated vector are
a = - d cos φ = - 8.6023*cos(35.54) = 7
b = d sin φ = 8.6023*sin(35.54) = 5

Answer:  (-7, 5)

6 0
3 years ago
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Given: ZF and ZG are right angles.
leonid [27]

Answer:

Step-by-step explanation:

3 0
2 years ago
Write the equation of the perpendicular bisector of . Point B is located at (–3, 1), and point C is located at (1, 5).
maxonik [38]

The equation of perpendicular bisector of BC is

y=-x+2

Further explanation:

A perpendicular bisector passes through the mid-point of a line so to get an ordered pair from which the perpendicular bisector will pass we need to find the mid-point of BC.

Mid-point = (\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2} )\\Here\\(x_1,y_1) = (-3,1)\\(x_2,y_2) = (1,5)\\Putting\ values\ in\ formula\\M = (\frac{-3+1}{2} , \frac{1+5}{2} )\\= (\frac{-2}{2} ,\frac{6}{2})\\= (-1, 3)

So the perpendicular bisector will pass through (-1,3)

Let m1 be the slope of BC

Then

m_1 = \frac{y_2-y_1}{x_2-x_1} \\=\frac{5-1}{1+3} \\=\frac{4}{4}\\ =1

Let m2 be the slope of perpendicular bisector

We know that the product of slopes of perpendicular lines is -1.

m_1.m_2 = -1\\1*m_2 = -1\\m_2 = -1

The standard form of point-slope form of line is:

y=mx+b

Putting the value of slope of bisector we get

y=(-1)(x)+b\\y=-x+b

To find the value of b, put the ordered pair (-1,3) in the equation

3 = -(-1) +b\\3= 1+b\\3-1 =b\\b=2\\

Putting the values of m and b in standard form

y=-x+2

Hence the equation of perpendicular bisector of BC is

y=-x+2

Keywords: Perpendicular bisector, Point-slope form

Learn more about point-slope form at:

  • brainly.com/question/7490805
  • brainly.com/question/8358304

#LearnwithBrainly

6 0
3 years ago
If ef bisects aed, aef=4x+3 and fed=7x-33 find m
Alex73 [517]

Answer:

makes no sence

Step-by-step explanation:

but at least i get all dem points

7 0
3 years ago
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The table shows Mitch’s record for the last thirty par-3 holes he has played.
nlexa [21]

Answer:c. 3/10

Step-by-step explanation:

4 0
3 years ago
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