Answer:
r = 2
Step-by-step explanation:
(2-3)/(6-5)
= -1/1
= -1
Answer:
18 meters if my mental math is right.
Answer:
<h3>1/24</h3>
Step-by-step explanation:
The race car is doing 8 laps in 1/3 hour, in one hour the car is doing:
8laps * (1/3) hour) = 8*3 laps / 1hour = 24 laps/hour.
Now, to complete one lap, the car will it take:
1 lap * (1 hour / 24 laps) = 1/24 hours the race car requires to complete 1 lap. Right answer is:
<h3>1/24</h3>
For this case, the first thing we must do is define variables:
x: Jane's age
y: Helen's age
By writing the system of equations we have:
y = x + 8
y-20 = 3 (x-20)
Solving the system we have:
x = 24
y = 32
Answer:
Jane is 24 years old
Helen is 32 years old
the equation for Jane would look like:
x + 8 = 3 (x-20) + 20
5)
x = 132 - 42
x = 90
Answer
90 degrees, right angle
6)
180 - 126 = 54
The other two are congruent so 54/2 = 27
Answer
27
7)
An exterior angle of a triangle is equal to the sum of the opposite interior angles
So
6x = 38 + 82
6x = 120
x = 20
Answer
20
8)
Sum of interior in a triangle = 180 degrees
So
2x - 3 + 23 + 128 = 180
2x + 148 = 180
2x = 32
x = 16
Answer
16
