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Salsk061 [2.6K]
3 years ago
6

What is the average speed of a biker if she biked 4.25 of a mile in 25 minutes?

Mathematics
1 answer:
slega [8]3 years ago
3 0

Answer:

0.17

Step-by-step explanation:

You need to divide the distance biked by the amount of time taken to bike 4.25 of a mile. Ignore the of a mile, that isn't needed. so then you divide 4.25 by 25 and get?

0.17 for average speed/0.17 mpm or miles per minute

Hope this helped!

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Can someone please explain to me how to solve this problem? I have the answer already all I need is to know how to solve the pro
omeli [17]

Answer:

Step-by-step explanation:

you have two supplementary angles,

both added up=180

7y+5y=12y

12y=180y=15

angle DBC=7y=15*7=105

5 0
2 years ago
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The equation y = 8x + 12, where x is the number of hours and y is the total cost, represents what the surf instructor charges fo
Lelu [443]
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A die with six faces has the number 1 painted on three of its faces, the number 2 painted on 2 of its faces, and number 3 on one
salantis [7]

Answer:

a) S = {1, 2, 3}

b) P(odd number) = \frac{2}{3}

c) No

d) Yes

Step-by-step explanation:

a) The sample space is the set of all possible outcomes. By definition, the elements of a set should not be repeated. Hence, the sample space S = {1, 2, 3}

However, the sample is not equiprobable because each element has different probabilities.

b) P(odd number) = \frac{number of odd digits}{number of faces}=\frac{4}{6}=\frac{2}{3}

Note that the odd numbers are 1 (on three faces) and 3 (on one face).

c) The fact the die has been biased does not change the possible outcomes. It only changes the probability of getting any given number.

d) Because the 3-face has been loaded, this probability changes. In fact, it is calculated thus:

Let's assume the probability for 1 or 2 is x. Then that of 3 is 2x(because it is twice the others). The sum of probabilities must be 1.

x+x+x+x+x+2x=1

7x=1

x=\frac{1}{7}

P(odd number) = 3\timesProb(1) + Prob(3)

= 3\times\frac{1}{7}+\frac{2}{7} = \frac{5}{7}

7 0
3 years ago
Draw to show how you can use models to compare a 345 and 391
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Hope this helps!

6 0
3 years ago
Y=–3x + 6y=9 What is the solution to the system of equations? (–21, 9) (9, –21) (–1, 9) (9, –1)
weqwewe [10]

ANSWER


The solution is (-1,9)

EXPLANATION

We want to solve the simultaneous equations


y=-3x+6---(1)


and


y=9--(2).


We substitute equation (2) in to equation (1), to obtain


9=-3x+6


This has now become a linear equation in a single variable x.


We solve for x  by grouping like terms.


9-6=-3x


3=-3x


We divide through by negative 3 to get;


-1=x.


Hence, the solution is (-1,9)





7 0
3 years ago
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