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MatroZZZ [7]
2 years ago
15

Yeah just yeah i need help-

Mathematics
2 answers:
valentinak56 [21]2 years ago
6 0
C i know because we had this in our school
ValentinkaMS [17]2 years ago
3 0
C I answered this before in school
You might be interested in
a jogger runs 4 miles per hour faster downhill than uphill. if the jogger can run 5 miles downhill in the same time that it take
Serga [27]

Answer: the rate uphill is 6 mph.

The rate downhill is 10 mph

Step-by-step explanation:

Let x represent the rate at which the jogger ran uphill.

The jogger runs 4 miles per hour faster downhill than uphill. This means that speed at which the jogger ran downhill is (x + 4) mph

Time = distance/speed

if the jogger can runs 5 miles downhill, then the time taken to run downhill is

5/(x + 4)

At the same time, the jogger runs 3 miles uphill. It means that the time taken to run uphill is

3/x

Since the time is the same, it means that

5/(x + 4) = 3/x

Cross multiplying, it becomes

5 × x = 3(x + 4)

5x = 3x + 12

5x - 3x = 12

2x = 12

x = 12/2

x = 6

The rate downhill is 6 + 4 = 10 mph

8 0
3 years ago
Read 2 more answers
Factor the algebraic expression<br><br> 18a + 15=
Feliz [49]

18a+15

making a subject of formular

a=18-15

=3

4 0
2 years ago
I need help :(((((((
Effectus [21]

Answer:Allen is correct

Step-by-step explanation: Allen is correct because angle 2 has more information than angle 1 and angle 1 is only 30 degrees.

3 0
2 years ago
Read 2 more answers
Hey someone help me with this please
OverLord2011 [107]

Answer:

d

Step-by-step explanation:

d. neither

If I helped please vote brainliest

6 0
3 years ago
Guys i need your HELP ASAP​
ivanzaharov [21]
To solve this, you’ll first need to solve for their slopes.

The slope for line Q is y2-y1/x2-x1 = -8-(-2)/-8-(-10) = -3

We know that the lines are perpendicular so the negative reciprocal of -3 is 1/3

The equation you get it y = 1/3x + b.

Now you will need to solve for b by substituting in the first ordered pair of line R.

2 = 1/3(1) + b.

Once you solve for b, you should get 5/3 and y = 1/3x + 5/3

Now, to find a, you will need to substitute in 10 from the second ordered pair into x in your new equation.

y = 1/3(10) + 5/3.

Your solution should be 5.

So your answer is: a = 5
8 0
3 years ago
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