4. 3x+(-x)=4
3x-x=4
2x=4
x=4/2
answers:
x=2
y=-2
5.
y=x-1
4x-y=19
-x+y=-1
4x-y(cross the y’s out they cancel eachother)=19
3x=18
x=6
-6+y=-1
y=-1+6
y=5
answers:
x=6
y=5
Diagonal of the rectangular prism=√(l²+w²+h²)
√(l²+w²+h²)=√(100+25+64)=√189 cm
If the number of students in the class is considered to be 1, and 8/9 of the students have a cell phone, the fraction indicating the number of students who do not have a cell phone is:
1- 8/9= 1/9.
1/9 of the students don't have a cell phone~
If the interior angle of a regular polygon is 160 degrees, then the exterior angle is 20 degrees. The sum of all exterior angles is 360 degrees so there must be:
360/20 sides = 18 sides
Answer:
B
Step-by-step explanation:
hope u got it!.............
