In the equation 2x + 7 = 21, what is the value of x? A.7 B.9 C.11 D.14

Anne is running on a trail at an average speed of 6 miles per hour beginning at mile marker 4. John is running on the trail at t

Sphinxa [80]

Answer:

John is running faster.

Step-by-step explanation:

Given that:

Average Speed of Anne = 6 miles per hour

Speed of John can be represented in the table below:

$\begin{center}\begin{tabular}{ c c}Time (hours) x & Mile Marker y \\ 0 & 1 \\ 0.5 & 4.5 \\ 1 & 8 \\ 1.5 & 11.5 \\\end{tabular}\end{center}$

To find:

Who is running faster of the both i.e. Anne and John?

Solution:

Here, to find the faster runner we can compare the average speed of both the runners.

We are given that, average speed of Anne = 6 miles per hour

We will have to calculate the average speed of John to find the faster runner.

Average speed can be calculated by dividing the total distance traveled with the total time taken.

Total distance traveled by John = 11.5 - 1 = 10.5 miles

Total time taken by John = 1.5 hours

Average speed of John = $\frac{10.5}{1.5} = 7\ miles/hr$

Clearly Average speed of John is greater than that of Anne's.

Therefore, John runs faster.

6 0

2 years ago

In triangle DEF, CG = (x + 5) units and DG = (3x – 2). What is DG? ______units

natulia [17]

In triangle DEF, CG = (x + 5) units and DG = (3x – 2).

What is DG? ___34___units

6 0

3 years ago

Read 2 more answers

A skier is trying to decide whether or not to buy a season ski pass. a daily pass cost $70. a season las costs $300. the skier w

Musya8 [376]

Answer:

hi, can you please answer mine too it's just a 1 question I really need the answer because I have to pass it later at 10 pm and it's already 9:01pm I hope you can help me:(

Step-by-step explanation:

about your question I'll just put it in the comment section:)

3 0

2 years ago

**answers needed fast** what goes in the small boxes

Nutka1998 [239]

Answer:

4 & 7 are the correct answers for this equation.

3 0

2 years ago

If the vertex of a parabola is negative for 6 and the other point of the curve is (-3,14) what is the coefficient of the squared

Anton [14]

Answer:

coefficient of the square is a.6

6 0

3 years ago