Part a:
x + y = 55
y = x + 25
part b:
jackie runs 15 minutes every day.
part c:
it is not possible for jackie to spend 45 minutes a day dancing, since the time she spends dancing and running is 55 minutes, and we know that it takes 15 minutes to run
step-by-step explanation:
let's call and while jackie is dancing
let's call x while jackie is running
then we know that jackie runs and dances for a total of 55 minutes every day
this means that:
x + y = 55
we also know that jackie dances 25 minutes more than she runs.
this meant that:
y = x + 25
now we substitute the second equation in the first and solve for the variable x
x + x + 25 = 552x = 55-252x = 30x = 15
jackie runs 15 minutes every day.
now we find the value of the variable -y
15 + y = 55y = 55-15y = 40
note that it is not possible for jackie to spend 45 minutes a day dancing, since the time she spends dancing and running is 55 minutes, and we know that it takes 15 minutes to run
Let's first find the sum of the interior angles in this polygon. We can use the equation (n - 2) x 180.
There are 8 sides on this polygon, so (8 - 2) x 180 = 1080 degrees.
Now that we know the sum of the interior angles, we can find the value of z by adding up all of the given values for the interior angles and setting the sum equal to 1080.
(134) + (2z - 15) + (2z + 1) + (2z) + (z + 44) + (2z) + (147) + (2z - 12) = 1080
299 + 11z = 1080
11z = 781
z = 71 degrees
Hope this helps! :)
I mean cause 2 x 2 is 4
So 2+2 is 4 you’re just putting 2 into 4 twice
