Answer:
115
Explanation:
Angles in a triangle sum to 180
Add the two angles given and subtract it from the total sum of angles to find the missing interior angle -
75 + 40 = 115
180 - 115 = 65
Now that we have the interior angle, we can work out the exterior angle by subtracting it from 180
180 - 65 = 115
The equation would be x+3x(10+2x)=142
The sides are 22cm , 54cm and 66 cm.
Solution: Let x be the height of a student in Marta's class.
The mean height of 18 students in Marta's class is 60 inches
We know that:




Therefore, the total measure of all 18 student's heights is 1080 inches
Answer:
38 cards
Step-by-step explanation:
x/2+14=33
33-14=x/2
19=x/2
x=19 * 2
x= 38