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LenaWriter [7]
3 years ago
5

If 1 + + 2 + 3 = 60, then the average (arithmetic mean) of , 2 , 3 , and 4 is equal to what

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
3 0

Step-by-step explanation:

1x+2x+3x=60

x=10

2x+3x+4x=20+30+40=90

average=90÷3=30

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Which of the following would be the best example of parallel lines in the real world
Tema [17]

Answer:

Real life example of parallel lines are railroad tracks and rows in a garden. Also the lines on a basketball court are parallel so basically C if im positive

Step-by-step explanation:

Some examples include the structural frames of buildings, railroad tracks, windows (opposite sides), sailboats, steps, and paper.

parallel bars in men's gymnastics

Also anything that is shaped as a rhombus, square or a rectangle. ( added by a.m.b.)

5 0
3 years ago
Read 2 more answers
Rectangle PQRS is rotated 90 counterclockwise about the origin what are the coordinates of point Q
inna [77]
You have not provided the diagram/coordinates for point Q, therefore, I cannot provide an exact answer.
However, I can help you with the concept.

When rotating a point 90° counter clock-wise, the following happens:
coordinates of the original point: (x,y)
coordinates of the image point: (-y,x)

Examples:
point (2,5) when rotated 90° counter clock-wise, the coordinates of the image would be (-5,2)

point (1,9) when rotated 90° counter clock-wise, the coordinates of the image would be (-9,1)

point (7,4) when rotated 90° counter clock-wise, the coordinates of the image would be (-4,7)

Therefore, for the given point Q, all you have to do to get the coordinates of the image is apply the transformation:
(x,y) .............> are changed into.............> (-y,x)

Hope this helps :)
5 0
3 years ago
Read 2 more answers
How do I solve this?
Sonbull [250]

The question is somewhat poorly posed because the equation doesn't involve <em>θ</em> at all. I assume the author meant to use <em>x</em>.

sec(<em>x</em>) = csc(<em>x</em>)

By definition of secant and cosecant,

1/cos(<em>x</em>) = 1/sin(<em>x</em>)

Multiply both sides by sin(<em>x</em>) :

sin(<em>x</em>)/cos(<em>x</em>) = sin(<em>x</em>)/sin(<em>x</em>)

As long as sin(<em>x</em>) ≠ 0, this reduces to

sin(<em>x</em>)/cos(<em>x</em>) = 1

By definition of tangent,

tan(<em>x</em>) = 1

Solve for <em>x</em> :

<em>x</em> = arctan(1) + <em>nπ</em>

<em>x</em> = <em>π</em>/4 + <em>nπ</em>

(where <em>n</em> is any integer)

In the interval 0 ≤ <em>x</em> ≤ 2<em>π</em>, you get 2 solutions when <em>n</em> = 0 and <em>n</em> = 1 of

<em>x</em> = <em>π</em>/4   <u>or</u>   <em>x</em> = 5<em>π</em>/4

5 0
2 years ago
Each side of a square is increasing at a rate of 5 cm/s. At what rate (in cm2/s) is the area of the square increasing when the a
nikklg [1K]

Answer:

knkkl

Step-by-step explanation:

bjkjjjkhjhjhjkhjhj

4 0
2 years ago
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PLEASEEEEEE HELPPPPPPPP
Natali5045456 [20]
The formula for the sum of n terms in an arithmetic progression is:
S = n/2 * (2a + (n-1)d)
Here, the common difference, d, is 8 and the first term, a, is 1. Substituting these into the formula, we get:

S = n/2 * (2*1 + 8(n - 1))
S = n + 4n² - 4n
S = 4n² - 3n
The answer is A.
8 0
3 years ago
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