Because 45 is half of 90, 5x=90. 5 times 18 is 90 so x is 18.
Answer:
7.2
Step-by-step explanation:
distance between the two points. (1, 2), (7, 6) = √(x-x')²+(y-y')²
d = √(7-1)²+(6-2)² = √52 = 7.2
4) 41% of 78 is what?
Answer = 31.98
Work:
x = 41/100 x 78
x = 3198/100
x = 31.98
6) 58% of what is 63.4?
The number is = 109.31
Explanation:
Let the number be = x
58/100 (x) = 63.4
x = 63.4 x (100/58)
x = 6340/58
x = 109.31
Polygon EDF and Polygon BAC
They are not similar since their angles are not equal.
3x+y=27, when x=7
1. Replace any x in the equation with 7.
3(7) + y=27
2. Simplify.
21+y=27
3. Solve for y.
y=27-21
y=6
4. Check your answer by inserting x=7 and y=6 into the original equation.
3(7) +6=27
21+6=27
27=27
Yes, it checks.
