All categories

3 years ago

Find the missing angle.

Mathematics

1 answer:

Anon25 [30]3 years ago

8 0

Answer:

$x=80$ °

Step-by-step explanation:

$sum ~of ~3~angles ~of ~a~ triangle ~is ~180$

$80+20+x=180$

$x=missing ~angle$

$100+x=180$

$x=180-100=80$

$So, x=80$

hope it helps...

have a great day!!

You might be interested in

Name one pair of parallel planes. All lines and planes that appear to be parallel are parallel.

bezimeni [28]

The parallel plane is the plane that has the same in-between distance at all points on the plane so plane ABF is parallel with plane DCG so option (C) is correct.

<h3>What is the plane?</h3>

The plane is a two dimension(2D) surface that has a surface area.

We can draw lines on a plane and two or more planes can intersect or parallel.

If two planes are parallel then the perpendicular distance between both planes must be the same.

The angle of inclination of two parallel planes with a single reference plane is also the same.

In the given cuboid the plane ABF is parallel with plane DCG.

So, ABF || DCG.

Hence "The parallel plane is the plane that has the same in-between distance at all points on the plane so plane ABF is parallel with plane DCG".

To learn more about planes,

brainly.com/question/1962726

#SPJ1

3 0

1 year ago

Solve for m in D=m/v , if D= 5.1 and v = 0.3.

Katyanochek1 [597]

M=1.53 -> Multiply 5.1 by .3 and you find m.

7 0

3 years ago

Read 2 more answers

Solve for y: 3y+4y=56

nydimaria [60]

Add 3y and 4y: 7y=56
Divide by 7: y=8

4 0

4 years ago

If tanA = 1/2 then evaluate cos A/sinA +sinA /1+cosA

Deffense [45]

Answer:

√5.

Step-by-step explanation:

Tan A = 1/2 means that the right triangle containing angle A has legs of length 1 and 2 units. So the hypotenuse = √(1^2 + 2^2) = √5 (using the Pythagoras theorem). The side opposite to < A = 1 unit and the adjacent side = 2 (as tan = opposite / adjacent).

so cos A = adjacent / hypotenuse = 2/√5.

and sin A = opposite / hypotenuse = 1 / √5

cos A / sin A = 2/√5 / 1/ √5 = 2.

sin A / (1 + cos A) = 1/√5 (1 + 2/ √5)

= 1 / √5 ( (√5 + 2) /√5)

= 1 / (√5 + 2)

So the answer is:

2 + 1 /(√5 + 2).

We can simplify it further by multiplying top and bottom of the fraction by the complement of √5 + 2 which is √5 - 2.

2 + 1 / (√5 + 2)

= 2(√5 + 2) + 1 / (√5 + 2 )

= { 2(√5 + 2) + 1 } / (√5 + 2)

Multiplying this by √5 - 2 / √5 - 2 we get:

(2(5 - 4) + √5 - 2) / (5 -4)

= 2 + √5 - 2 / 1

= √5.

3 0

3 years ago

The temperature at sunrise was -3*F. By noon, the temperature climbed 18 degrees. By sundown the temperature was -14*F. How much

Natalija [7]

Answer:

32*F

Step-by-step explanation:

* = degrees

Started at -3*F

By noon, the temperature climbed 18* = +18*

By sundown the temperature was -14*F

What we want to know: How much did the temperature drop between noon and sundown?

This is actually really easy!

What was the temperature at noon? --> 18*F

What was the temperature at sundown? --> -14*F

So what is the difference between 18* and -14*? We can't use an equation, so we will solve manually.

The distance from -14 to 0 is 14 degrees. Keep that in mind.

The distance from 18 to 0 is 18 degrees. Keep that in mind.

So what is 14 + 18? 14 + 18 = 32*.

So, the temperature dropped 32*F between noon and sundown.

I hope this helps! I know this was a little messy, but that is because we couldn't use an equation/expression to solve this.

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

6 0

3 years ago