Let’s make
P = Pamela
J = Jiri
J - 6 = P
P + J = 78
We can replace P with J - 6 because they are the same thing.
J - 6 + J = 78
2J - 6 = 78
2J = 84
J = 42
Jiri is 42 years old.
Answer:
See below
Step-by-step explanation:
In #4, the angles are vertical because the angles are congruent to each other. Therefore, you would set up the equation x+8=120 where x=112.
In #5, the angles are complementary because their sum is 90°. Therefore, you would set up the equation 43+x+3=90 where x=44.
In #6, the angles are supplementary because their sum is 180°. Therefore, you would set up the equation 76+2x+4=180 where x=50.
Answer:
634
Step-by-step explanation:
=625
3²=9
625+9=634
Answer:
44
Step-by-step explanation:
The formula to find to area of a circle is 
= Area
The perimiter formula is 
= Perimeter
Since we know the area (154cm) we can find the radius (r) with the formula.
You first have to find what the radius of the circle is with.
= 154
3.14
=154
Now simplify.
=49 (rounded)
r=7
Now we can find the perimeter with the formula above.
= P
Now plug in.
2(3.14)(7)= P
44=P (Rounded)
