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Gre4nikov [31]
3 years ago
7

Use the equation below to calculate the average speed for each problem, then complete the data table below. Problem Distance Tim

e Speed Distance/Time 1. Ron walks 22.5 km in 5 hours, find his speed. 22.5 km 5 hours 22.5km/ 5hr= 4.5 km/hour 2. A train covers 168 km in 4 hours. Find its speed. 3. Rachel travelled 240 km in 4 hours by train and then travelled 120 km in 3 hours by car and 3 km in 1/2 hour by cycle. What is the average speed during the whole journey? 4. A car moves from A to B at a speed of 50 km/hr and comes back from B to A at a speed of 30 km/hr. Find its average speed during the journey.

Mathematics
1 answer:
Naddik [55]3 years ago
4 0

1. Answer is 4.5 km / hr.

... because you divide the time but the distance so for this question you divide 22.5 by 5 and that's your answer. do the same for every question! hope this helps.

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Please help me I need help please​
MakcuM [25]

Answer:

p = 4

Step-by-step explanation:

Given equation:

x^2+(p-3)y^2-4x+6y-16=0

<u>Standard equation of a circle:</u>

(x-a)^2+(y-b)^2=r^2

(where (a,b) is the centre of the circle, and r is the radius)

If you expand this equation, you will see that the coefficient of y^2 is always one.

Therefore, p-3=1

\implies p=1+3=4

<u>Additional information</u>

To rewrite the given equation in the standard form:

\implies x^2+y^2-4x+6y-16=0

\implies x^2-4x+y^2+6y=16

\implies (x-2)^2-4+(y+3)^2-9=16

\implies (x-2)^2+(y+3)^2=16+4+9

\implies (x-2)^2+(y+3)^2=29

So this is a circle with centre (2, -3) and radius √29

3 0
2 years ago
What is the formula for the sum of an infinite geometric series
algol13
An infinite geometric series is the sum of an infinite geometric sequence . This series would have no last term. The general form of the infinite geometric series is a1+a1r+a1r2+a1r3+... , where a1 is the first term and r is the common ratio. We can find the sum of all finite geometric series.
3 0
3 years ago
So I’m stuck on these 3 problems can anyone help me? If you can pls simplify the problems are: 20/26 ÷ 5 =? 28/56 ÷ 2 =? 75/90 ÷
Tamiku [17]

Answer:

2/13 or 0.15 ,  1/4 and 5 /18 or 0.28

Step-by-step explanation:

20/26 ÷ 5 =?

10/13 ÷ 5 = 2/13 or 0.15

28/56 ÷ 2 =?

1/2 ÷ 2 = 1/4

75/90 ÷ 3 =?

5/6 ÷ 3 =5 /18 or 0.28

7 0
2 years ago
Two charges are placed on the x axis. One of the charges (q1 = +9.1 µC) is at x1 = +2.8 cm and the other (q2 = -22 µC) is at x2
Tcecarenko [31]

Answer:

See it in the pic

Step-by-step explanation:

See it in the pic

6 0
3 years ago
PLEASE HELP
Gre4nikov [31]

It'd be B, and eating breakfast can also vary. Sometimes people eat unhealthy things, such as bacon and eggs and pancakes.

6 0
4 years ago
Read 2 more answers
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