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prisoha [69]
3 years ago
6

During his vacation, Dalyn rents a small boat from a rental service that charges a flat fee of $30 plus $10 per hour (including

taxes). The total charge comes to $90. Which equation can be used to calculate the number of hours, x, that Dalyn rents the boat?
Mathematics
1 answer:
Helga [31]3 years ago
3 0
What’s they answers question then
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In triangle ABC angle C 105° B 45° BD median of triangle ABC find the angle bdc
antiseptic1488 [7]

Answer:

30

Step-by-step explanation:

105 + 45 +  bdc = 180

bdc=30

8 0
1 year ago
Select the set of equations that would be used to solve the following absolute value equation: |x+6|=18
Wewaii [24]
The answer is A. x-6=18 and x+6=18.

8 0
3 years ago
Read 2 more answers
Waht is this plz help ​
Nata [24]

Answer:

The answer is 10 and 37 degrees.

Step-by-step explanation:

Triangle angles add up to 180.

I hope this helped and if it did I would appreciate it if you marked me Brainliest. thank you and have a nice day!

5 0
3 years ago
If θ=0rad at t=0s, what is the blade's angular position at t=20s
babunello [35]
The attached figure represents the relation between ω (rpm) and t (seconds)
To find the blade's angular position in radians ⇒ ω will be converted from (rpm) to (rad/s)
              ω = 250 (rpm) = 250 * (2π/60) = (25/3)π    rad/s
              ω = 100 (rpm) = 100 * (2π/60) = (10/3)π    rad/s

and from the figure it is clear that the operation is at constant speed but with variable levels
            ⇒   ω = dθ/dt   ⇒   dθ = ω dt

            ∴    θ = ∫₀²⁰  ω dt  
 
while ω is not fixed from (t = 0) to (t =20)
the integral will divided to 3 integrals as follow;
       ω = 0                                          from t = 0  to t = 5
       ω = 250 (rpm) = (25/3)π            from t = 5   to t = 15
       ω = 100 (rpm) = (10/3)π            from t = 15 to t = 20

∴ θ = ∫₀⁵  (0) dt   + ∫₅¹⁵  (25/3)π dt + ∫₁₅²⁰  (10/3)π dt
     
the first integral = 0
the second integral = (25/3)π t = (25/3)π (15-5) = (250/3)π
the third integral = (10/3)π t = (25/3)π (20-15) = (50/3)π

∴ θ = 0 + (250/3)π + (50/3)π = 100 π

while the complete revolution = 2π
so instantaneously at t = 20
∴ θ = 100 π - 50 * 2 π = 0 rad

Which mean:
the blade will be at zero position making no of revolution = (100π)/(2π) = 50
















3 0
3 years ago
Give the answer to the question below.
alexira [117]

Answer:

1/4 assuming x is not 0

Step-by-step explanation:

x^0 is 1 and 1/4 * 1 = 1/4

4 0
3 years ago
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