Help me please

Mathematics

1 answer:

MariettaO [177]3 years ago

3 0

Answer:

$n=37^\circ$

Step-by-step explanation:

Two lines intersect and create vertical angles.

Vertical angles are the angles opposite each other when two lines intersect. These two angles formed are said to be equal.

Given vertical angles: $(3n-28)^\circ$ and 83^\circ.$

$(3n-28)^\circ$ = 83^\circ.\\$Add 28 to both sides\\(3n-28+28)^\circ$ = 83^\circ+28^\circ\\3n=28^\circ+83^\circ\\3n=111^\circ\\$Divide both sides by 3\\n=37^\circ$

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8+2x-4=6+2(x+1) please help

Citrus2011 [14]

Answer:

Step-by-step explanation:

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3 years ago

Points K, L, and M are the midpoints of their respective sides. If LM = 10, determine the length of side YX. answers:

MAVERICK [17]

Answer:

D) 20

Step-by-step explanation:

Ml║ YK and YM║KL ⇒ YK= ML= 10

ML║KX and XL║KM ⇒ KX= ML=10

YX= YK + KX= 10+10= 20

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3 years ago

What is the area of parallelogram rstu? 21 square units 24 square units 28 square units 32 square units

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The area of the considered parallelogram RTSU is given by: Option A: 21 sq. units

<h3>How to find the area of a parallelogram?</h3>

Area of a parallelogram = (its height × its base) sq. units.

<h3>What is the distance between two points ( p,q) and (x,y)?</h3>

The shortest distance(length of the straight line segment's length connecting both given points) between points ( p,q) and (x,y) is:

$D = \sqrt{(x-p)^2 + (y-q)^2} \: \rm units$

For this case, the missing diagram is attached below.

If we take the base as ST then as ST is parallel to y axis, the line perpendicular to ST would be parallel to x axis. The heigth of a parallogram is the perpendicular distance between its base and top.

The base is ST and top is RU, the line segment US is perpendicular to both RU and US and its length,therefore, will serve as height as its length=perpendicular distance between the base and the top of the parallelogram.

Thus, we get:

Area of RTSU = Length of ST × Length of US

The coordinates of endpoints of ST are (4,-1), (4,-4)

Thus, the length of ST = distance between S and T = $\sqrt{(4-4)^2 + (-1 - (-4))^2 }= 3$