Answer:
Your number is 102.
120/3=40 (3 numbers so divide by 3)
3+15=18
120-18=102
Answer:
200 students either bike or walk to school
Step-by-step explanation:
0.4 = 40%
500 * 0.4 = 200
40% is 200 students
200 students either bike or walk to school
Answer:
13
Step-by-step explanation:
(3 times 2)+7=x
6+7=x
x=13
Answer:
Step-by-step explanation:
12a)To rationalize the denominator, multiply the denominator and numerator by √5.
b) (a+b)² = a² + 2ab + b²
(1 +√3)² = 1² + 2*1*√3 + (√3)²
= 1 + 2√3 + 3
= 4 + 2√3
a = 4 ; b =2
13) (a + b)(a - b) = a² - b²
Answer:
x = 19
Step-by-step explanation:
The two angles with measures are supplementary.
6x + 9 + 4x - 19 = 180
10x - 10 = 180
10x = 190
x = 19
