A cyclist rode 1 mile at full speed in 3 minutes with the wind and returned in 4 minutes against the wind, again pedaling at full speed. Find his speed without the wind. ("Challenge" question)

Answers

Answer 1

Answer: so 1 mile per 3 minute or
1 times 20=20
3 times 20=60

20 miles in 60 minutes or
20 miles per hour

20 mph with wind

4 mins agains the wind
multiply 15
15 miles per hour agains the wind

so d=st

distances are the same
d=st
20mph with the wind
20=wind+real speed

15mph agains the wind
15=real speed-wind

20=w+rs
15=-w+rs
add together
35=2(rs)
divide 2
real speed=17.5

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What is the value of x

Answers

×=8 you're so welcome. :)

A^2+B^2=x^2

6^2+10^2=2x

36+100=2x

136/2=2x/2

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Can someone help me with my math homework I don't get it and can you please explain how you did it. Also only help me with the highlighter problems...

Answers

1) What you see as 3 $(3)/(8)$ can be also changed to only a fraction, by changing $(3)/(1)$ to $(24)/(8)$ , but since the question wants 2 as a whole number, we must take out $(24)/(8) = 2 (8)/(8)$ and then add the 8 eights to the other 3, to get $2 (11)/(8)$

for # 10- 13, you need to have the same number on the bottom of all the numbers being subtracted, that means turning the number that aren't fractions (like 4) into fraction, and then into fractions with the same denominators.

10) $(4)/(1)$ changes to $(32)/(8)$ to get $(32)/(8) - (3)/(8) = (29)/(8)$ or $3(5)/(8)$

11) $(5)/(1)$ changes to $(50)/(10)$ , and $2(3)/(10)$ to $(13)/(10)$ to get $(50)/(10)-(13)/(10)=(37)/(10)$ or $3(7)/(10)$

Bailey was mixing some instant pudding. The directions said to add 2 cups of milk to the contents of the package. The only measuring cup that she could find was a 2
3
cup. How many times should she fill this measuring cup?

Answers

3 times because 2/3 +2/3= 1 1/3 add another third and you get 2 cups

You get 3 cups

Step-by-step explanation:

Please help!

Which of the following is a trinomial with a constant term?

Answers

Answer:

D. x + 4y + 7

Answer:

Step-by-step explanation:

D. x + 4y + 7

7 is the constant term in the trinomial above.

Zwelibanzi and Jessica are friends. Zwelibanzi takes Jessica’s civil technology test paper and will not tell her what her mark is. He knows Jessica dislikes word problems so he decides to tease her. Zwelibanzi says: : I have 12 marks more than you do and the sum of both our marks are equal to 148. What are our marks?