Answer:
Mark is 9 and his brother is 14.
The expression for Mark: 23 - 9 = 14
The expression for his brother: 23 - 14 = 9
Step-by-step explanation:
We know that 14 is 5 more than 9, and Mark is the younger one so he would be 9 and his brother 14. 9 + 14 also equals 23, so thats how you know you have the right answers.
Answer:
18.44%
Step-by-step explanation:
Let :
Percentage who rode bus to work last year = x
Percentage who ride bus to work this year = 27.1%
Percentage who ride bus to work this year = [percentage who rode bus to work last year + 47% of percentage who rode bus to work last year]
Mathematically ;
27.1% = x + 47% of x
0.271 = x + (0.47x)
0.271 = x + 0.47x
0.271 = 1.47x
x = 0.271 / 1.47
x = 0.1843537
x = 0.1843537 * 100%
x = 18.435%
x = 18.44%
Answer:
209 cars
Step-by-step explanation:
95/5=19. 19 cars is the unit rate. 19*11=209
The tree, bamboo pole and the ground will form a right triangle. the length of the pole is the hypotenuse of the right triangle form. so it can be solve using:
sin A = o / h
where A is the angle
o is the oposite side of the angle
h is the hypotenuse
h = o / sin a
h = 12.2 / sin 40
h = 18.7 m is length of the pole
the first few bars are the people who walked fewer than 4,000, so add up the numbers on the side (2 and 5) and you get 7, so a
