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tatyana61 [14]
3 years ago
13

a motor scooter travels 20 miles an hour in the same time that a bicycle covers 9 miles an hour if the rate of the scooter is 9

miles per hour more than twice the rate of the bicycle find both rates?
Mathematics
1 answer:
sdas [7]3 years ago
3 0
0.4 hours or 24 minutes
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A drug company developed a new formula for their headache medication. To test the effectiveness of this new formula, 250 people
irina1246 [14]

Answer: correct is B

Step-by-step explanation:

Annex the bar graph that shows which improvement time is less, the new formula being more effective, with an average of 55 minutes and the average of the old formula is 75 minutes, which leads to the conclusion that the new formula is better than the previous one with a time difference of 20 minutes.

5 0
4 years ago
Pls help<br> Enter the equation for the graph.
prisoha [69]

Answer:

y=[1]cos([\frac{2\pi }{3}]x)

Step-by-step explanation:

Looking at the graph, we can see the domain to be from (0 , 2π).

Now we have to find one period that corresponds to cos(x).

The half-period of cos(x) for this graph appears to be pi/3 and adding another pi/3 gets us 2pi/3 to be our cosine period.

b = 2pi/3

a is the same range as cos(x). Range: (0,0)

y = [a] * cos ([b]*x)

y = [1] * cos([2pi/3]x)

4 0
2 years ago
Find The equation of the line which passes through the point (14,-14) and is parallel to y= -1/3x+23/6
marishachu [46]

Answer:

y = -⅓x - 9⅓

Step-by-step explanation:

-14 = -⅓[14] + b

-4⅔

-9⅓ = b

y = -⅓x - 9⅓

* Parallel lines have SIMILAR <em>RATE OF</em><em> </em><em>CHANGES</em><em> </em>[<em>SLOPES</em>], so -⅓ remains the way it is.

I am joyous to assist you anytime.

8 0
3 years ago
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snow_lady [41]

Answer:

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Null Hypothesis is the hypothesis of no difference so apt null hypothesis would be that there is no relation between the photosynthetic rate and the amount of available nitrogen

3 0
3 years ago
jen makes a rectangular banner. it is 3/4 yard long and 1/4 yard wide. what is the area, in square yards of the banner
SashulF [63]
Ok so in order to find the answer to this problem we are going to Multiply \frac{3}{4} and \frac{1}{4}. \frac{3}{4}* \frac{1}{4}= \frac{3}{4}&#10; Answer:\boxed{ \frac{3}{4}} \\ &#10;
8 0
3 years ago
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