Answer:
180
Step-by-step explanation:
What you have to do is multiply all of them.
9 x 4 x 5 = 180
Answer:
18
Step-by-step explanation:
Substitute 9 as y. 6(9-6). Subtract: 6(3). Multiply: 18
The third choice is very useful. It's valid because two things that are both equal to 'y' are equal to each other, and it can be easily solved to find 'x'.
Answer:
x=21
Step-by-step explanation:
Notice the right angle. Perpendicular to it on the right, we have two complementary angles, 25, and 3x+2 (you can ignore the parentheses basically). Because they are complementary angles, they will add up to 90, so we can make an equation to solve for x:
25+3x+2=90
3x+2=65
3x=63
x=21
So x=21 is the correct answer. Let me know if you have any questions about my explanation.
