It took John 12 hours riding his bike to make the round trip to his uncle's. If he averaged 20 mph out and 30 mph back, how long did he travel each way? (Round answer to nearest tenth.)

Answers

Answer 1

Answer: I belive it would be 7 hours going and 5 hours coming back

Answer 2

Answer:

Let d = dist traveled one way
Write a time equation;
time = dist/speed
d/20+d/30 = 12

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Find the slope of the line that contains (4, -10) and(3,9).
Divide 500 in a ratio of 3:7
If a gain of 5 yards is shown by 5, what does -5 mean?
Given that (-9,-3) is on the graph of f(x), find the corresponding point f(x+1)

What is the first step in solving the following equation 3x - 5 = 20?

Answers

Add 5 to both sides.

Add 5 in the both sides

Which ordered pair would form a proportional relationship with the point graphed below?On a coordinate plane, point (negative 20, 40) is plotted.

Answers

Answer:

Step-by-step explanation:

Answer:

its B

Step-by-step explanation:

i did the test and got 100%

What is the reciprocal of 7/9

Answers

A reciprocal is denominator over the numerator so
9/7

0.01587301587 should be the answer

Laurie's favourite football team has had a bad century! They have only won the grand final once in a hundred years. Laurie won't say what year it was. All he will say is that it's the same year when you're standing on your head as when you are standing upright. What year (in the 1900's) did his team win the grand final?

Answers

Answer: 1961

Step-by-step explanation: If you flip 1961 upside-down, it looks the same.

There are 250 students in a senior. of the 250 students, 102 are boys. there are 20 senior girls and 18 senior boys on the track team. What is the probablity a randomly chosen student from the senior class is a girl who does not run track?

Answers

If 102 are boys then 250 - 102 = 148 are girls.
If 20 girls run track, then 148 - 20 = 128 girls do not run track
probability a randomly chosen student from the senior class is a girl who does not run track = (probability the student chosen is a girl) * (probability the student does not run track)
= (148/250) * (128/250) = 128/250 = 62/125

The division property of equality could be used to solve which of the following equations?a. 5x= 30
b. x+ 3 = 7
c. (x+ 2) (x- 2) = 0
d. = 16

Answers

If you would like to know which of the above equations could be solved by the division property of equality, you can find this using the following steps:

a. 5 * x = 30 /5
x = 30 / 5
x = 6
b. x + 3 = 7 /-3
x = 7 - 3 = 4
c. (x + 2) * (x - 2) = 0
1. x = -2
2. x = 2
d. = 16

The correct result would be a. 5 * x = 30 can be solved by the division property of equality.

Answer:

Option a is correct that is 5x=30 will use division property of equality.

Step-by-step explanation:

We have been given four different equations we need to tell which one could be used to solve by division property:

In Option a:

x can will be solved by division property

$5x=30$