Answer:
Jiao's total swimming time is 59.73 seconds
Step-by-step explanation:
i) Ava took 31.49 seconds to finish her first lap.
ii) Ava took 30.03 seconds to finish her second lap.
iii) Therefore Ava took 31.49 + 30.03 = 61.49 seconds to complete her two laps.
iv) Jiao finished her two-lap swimming race 1.76 seconds before Ava.
v) Jiao's total swimming time = 61.49 - 1.76 = 59.73 seconds
Answer:
Step-by-step explanation:
cos θ=sinθ
divide by cos θ
1=tan θ
tan θ=1=tan 45,tan (180+45)
θ=45°,225°
Answer:
7
Step-by-step explanation:
add whats in the ( ) then divide by 8
The number of hours she practices each day is unknown, so let's call it x.
She practices dancing x hours each day she goes to practice.
Since she practices 3 days per week, in a week she practices 3x hours.
In two weeks she practices 2(3x) hours, or 6x hours.
We are told she practices 12 hours in 2 weeks, so 6x must equal 12.
The equation is
6x = 12
We can solve it by dividing both sides by 6.
x = 2
She practices 2 hours per day.
Check:
2 hours per for 3 days = 2 * 3 hours = 6 hours in 1 week.
In 2 weeks, she practices 2 * 6 hours = 12 hours.
Our solution is correct.
Answer:
y=1.7x
Step-by-step explanation:
yo yo, yo yo, yo yo, yo yo, yo yo, yoo
