Answer:
15.33cm
Step-by-step explanation:
when you try to draw out this figure, satisfying the fact that Ad and Ac are both straight lines. you find the ultimately it forms a right-angled triangle with sides AC and AD and hypotenuse CD.
Now, you may use Pythagoras theorem to solve:
AC^2 + AD^2 = CD^2
12.3^2 + 9.15^2 = CD^2
CD^2 = 235.0125
CD = square root of 235.0125 = 15.33cm
Hope this helps
Step-by-step explanation:
13. -43
14. 2101
15. 11.25
Answer:
y = 34
Step-by-step explanation:
PEMDAS =
Parenthesis
Exponents (& Roots)
Multiplication
Division
Addition
Subtraction
Remember to follow PEMDAS. First, multiply -6 with 4:
-6 * 4 = -24
-24 + y = 10
Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. Add 24 to both sides:
-24 (+24) + y = 10 (+24)
y = 10 + 24
y = 34
y = 34 is your answer.
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The number of bus riders is 3.5 times the number of walkers.