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Amanda [17]
3 years ago
7

David burns 220 calories riding her bike each hour. He wants to burn 550 calories riding his bike at the same rate. what answer

represents all possible values for h, the number of hours David must ride her bike to burn more than 550 calories?
Mathematics
1 answer:
JulijaS [17]3 years ago
4 0

Answer:

3

Step-by-step explanation:

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At which value in the domain does f(x)=0 ?
lina2011 [118]

f(x)=0

Domain are the set of x values

f(x)=0 , we find all the x values where y =0

At x intercepts y is always 0

so we find all the x intercepts.

x intercepts are the points where the graph crosses x axis

In the graph we can see that the graph crosses x axis at

-2.5 , -0.75 and 1

-2.5 , -0.75 and 1 are the domain where f(x)=0

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Answer:

x= -3+√2 or x= -3-√2   ( answer : A  and B )

Step-by-step explanation:

hello :

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so two solutions :

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7 0
3 years ago
Kenny takes a cab to the airport. He is charged $2.56 per mile. Kenny pays the driver a total of $59.72 for the trip which inclu
KIM [24]

Answer:

Kenny traveled 19.5 miles

Step-by-step explanation:

8 0
3 years ago
The area of a rectangle is 20 square inches. If the length is 4 inches less than 6 times the width, then find the dimensions of
Tpy6a [65]

Step-by-step explanation:

Let the width=x

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{\boxed{\sf Area=LB}}

  • Substitute the values

\hookrightarrow\sf x (6x-4)=20

\hookrightarrow\sf 6x^2-4x=20

\hookrightarrow\sf 6x^2-4x-20=0

  • Here a=6, b=-4, c=-20.
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\hookrightarrow\sf x=\dfrac {1}{3}+\dfrac {1}{3}\sqrt {31} \quad or \quad \dfrac {1}{3}+\dfrac {-1}{3}\sqrt {31}

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Answer:

B. 407

Step-by-step explanation:

equation: y= A(1- r/n)^nt

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