Answer:
490 students have back packs
Step-by-step explanation:
700 / 10 = 70
70* 7 = 490
Complementary angles add up to 90 degrees.
The complement of 57 is (90 - 57) = 33 degrees.
Answer:
x = -25
x = infinite solutions
Step-by-step explanation for 1:
4(-25) - 10 = 5(-25) + 15
-100 - 10 = -125 + 15
-110 = -110
Step-by-step explanation for 2:
Both equations are the exact same. So whatever number you put, the answer will be right
I believe this is Pythagorean theorem
The equation is
a^2+b^2+=c^2
In this case the equation would be
6^2+4^2=c^2
36+16=c^2
52=c^2
c=7.21110255093
It will take them 9 minutes to wash a car if they work together! take half of each time