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dangina [55]
3 years ago
11

A circular running track is 1/4 mile long. Elena runs on this track completing each lap in 1/4 of an hour. What is Elena's runni

ng speed? [Do not include units (miles per hour) in your answer.
Mathematics
1 answer:
daser333 [38]3 years ago
7 0

Answer:

She is going 1mph

Step-by-step explanation:

each lap is 1/4 of a mile and 1/4 of an hour so 4 laps = 1 mile and in 1 hour

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If the Price Elasticity of Demand for a product is -.8, and the product currently sells for $100 per unit, how much will demand
egoroff_w [7]

Answer: Percentage change in quantity would decrease by 12.5%.

Step-by-step explanation:

Since we have given that

Price elasticity of demand = -0.8

Price of each unit = $100

After change, price of each unit becomes = $110

% change in quantity would be

\dfrac{New-old}{old}\times 100=\dfrac{110-100}{100}\times 100=10\%

As we know the relation between price, quantity and elasticity.

e_D=\dfrac{\text{\% change in quantity}}{\text{\%change in price}}\\\\-0.8=\dfrac{10\%}{x}\\\\x=\dfrac{10}{-0.8}\\\\x=-12.5\%

Hence, Percentage change in quantity would decrease by 12.5%.

8 0
3 years ago
Which relation is a function of x?<br> 1 {(1,2), (7, 6), (3, 2), (1, 0), (5, 6)}. <br> 3. x=3y²–7
avanturin [10]

9514 1404 393

Answer:

  The given graph shows a function of x.

Step-by-step explanation:

Neither 1 nor 3 is a single-valued relation for some values of x. The graph shown passes the vertical line test, so does represent a function.

The graph is a relation that is a function of x.

___

The attached graph is of the equation of 3. A vertical line will intersect the graph in more than one place, so the relation is NOT a function.

4 0
2 years ago
Define right triangle.
Firdavs [7]

Answer:

D

A right triangle is a triangle that has one 90 degree angle, so looking at the options i would say D

Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
Jose earned 15 points in a video game. He lost 40 points, earned 87 points, then lost 30 more points. Write and evaluate an expr
KIM [24]

(15-40)+(87-30)

-25+57

32 total points

7 0
2 years ago
I need help with this please!!
topjm [15]

Answer:

8(3j -2)

4(6j -4)

Step-by-step explanation:

24j - 16

Rewriting

8*3*j - 8*2

Factor out the greatest common factor

8(3j -2)

We can also factor out 4

4*6j - 4*4

4(6j -4)

3 0
2 years ago
Read 2 more answers
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