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Svet_ta [14]
2 years ago
11

A cyclist travels 8 km from home to the park. She leaves home at 10:15 and arrives at the park at 10:30. What is her average spe

ed in km/h?
Mathematics
1 answer:
Viktor [21]2 years ago
5 0

Answer:

speed = 32km/hr

Step-by-step explanation:

Time

10:15 to 10:30 = 1/4 hr

speed = distance/time

speed = 8 / (1/4)

speed = 32km/hr

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m_a_m_a [10]
-7.2x + 8.7x = -3.5 - 10
1.5x = -13.5
x = -13.5/1.5
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5 0
3 years ago
Find an input that yields an output of 214. rule: y= -15x+79
Dafna1 [17]

Answer:

          The input  have to be -9 to get output 214 with the rule y=-15x+79

Step-by-step explanation:

x is the input, y is the output so:

214 = -15x + 79

214 - 79 = -15x

15x = -135

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6 0
3 years ago
Read 2 more answers
7 line tshirt company manufactures t-shirts and sells them online.The company has a model where the cost C, in dollars to make x
bonufazy [111]

Answer:

The company must sell at least 2 shirts to break even.

Step-by-step explanation:

Cost:

The cost is given by the following equation:

C = \frac{40}{30x+20} + 20 = \frac{4x}{3} + 20

Revenue:

The revenue is given by the following equation:

R = 15x

How many t shirts must the company sell to break even?

Breakeven point is when the revenue is the same as the costs. So

\frac{4x}{3} + 20 = 15x

15x - \frac{4x}{3} = 20

\frac{45x}{3} - \frac{4x}{3} = 20

Multiplying everything by 3

45x - 4x = 60

41x = 60

x = \frac{60}{41} = 1,...

Since you cant make a decimal value of shirts

The company must sell at least 2 shirts to break even.

[

7 0
3 years ago
constance can decorate 1 1/2 ornaments in 1/4 hours how many ornaments per hour can constance decorate.​
kkurt [141]

Answer:

6

Step-by-step explanation:

set up a ratio

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x = 1.5 / 0.25 = 6

5 0
2 years ago
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Artist 52 [7]
Answer:

x^2 - 2x + 6

Explanation:

(x^2 + 1) - (2x - 5)
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x^2 - 2x + 6
8 0
3 years ago
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