All the interior angles of a triangle always add up to 180 degrees.

3x + (2x + 20) + (4x - 20) = 180
3x + 2x + 20 + 4x - 20 = 180
3x + 2x + 4x + 20 - 20 = 180
10x = 180
x = 180/10
Therefore, x = 18

4 0

4 years ago

Read 2 more answers

Find the value of x that makes j ll k.

musickatia [10]

X=10,can i get the brainiest plz?<span />

6 0

3 years ago

What is 16 percent of $36.48 ?

vlabodo [156]

16% of $36.48 is $5.84

9s $\frac{is}{36.48} = \frac{16}{100}$

Cross multiply 16 and 36.48 to 583.68, and then I divided by 100, to get the percent of 5.8368, which I rounded up to 5.84%.

4 0

3 years ago

Sara can travel 23 feet in 11 hours. Please calculate Sara's rate of speed. (round to 2 decimal places)

kari74 [83]

Answer:

How do I ask a question on here?

Step-by-step explanation:

8 0

3 years ago