So r+c=42
c=4+r
subsitute c=4+r for r in r+c=42
r+4+r=42
add like terms
2r+4=42
subtract 4 from both sides
2r=38
divide both sides by 2
r=19
rob=19
subsitute r=19 for r in c=4+r
c=19+4
carly=23
Answer:
the triangle above is an isoceles triangle
therefore the base angles are equal
So we have:
X + X + 38= 180
2x = 180-38
2x = 142
X = 71°
Tanα=5/12
α=arctan(5/12)°
α≈22.62° (to nearest hundredth of a degree)
Tell me if the answer is true or wrong
Answer:
the answer should be 3/10
Step-by-step explanation:
if you look at the photo you can solve it from there
