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joja [24]
3 years ago
6

5. An airplane takes 4 hr to travel a distance of 4100 km. Another airplane travels at a speed

Mathematics
1 answer:
Mazyrski [523]3 years ago
7 0

Answer:

4.969696 hours

Step-by-step explanation:

The distance traveled is shown through the following equations

Distance = velocity * time

This means that

4100=velocity*4

This means that ariplane 1 travles at 1025 km/hr

We can then subtract 200 from this to find that airplane two travels at a speed of 825 km/hr

Now we need to find how long it takes for that plane to travel 4100

So using the same equation

4100=825*time

Divison will tell us that the answer is around 4.9696 hours which is pretty much 5

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The scores on a test for a sample of 42 statistics students are summarized in the following table. 9, 90, 18, 80, 15, 70. Find t
igomit [66]
<h3>Answer:   78.6</h3>

Work Shown:

\begin{array}{|c|c|} \cline{1-2}\text{Number of People} & \text{Score}\\\cline{1-2}9 & 90\\\cline{1-2}18 & 80\\\cline{1-2}15 & 70\\\cline{1-2}\end{array}

Multiply across the rows to form a third column. Example: 9*90 = 810 in the first row.

\begin{array}{|c|c|c|} \cline{1-3}\text{Number of People} & \text{Score} & \text{Number*Score}\\\cline{1-3}9 & 90 & 810\\\cline{1-3}18 & 80 & 1440\\\cline{1-3}15 & 70 & 1050\\\cline{1-3}\end{array}

The values in the third column add to 810+1440+1050 = 3300

Divide this over the total number of people which is 9+18+15 = 42

The mean is 3300/42 =78.571 approximately which rounds to 78.6

5 0
1 year ago
If Miguel types 40 words per minute and he types for 30 minutes how many words will he have typed total? *
krok68 [10]

Answer:

1200 words

Step-by-step explanation:

If he types 40 words a minute, you have to multiply that by thirty because he typed 40 words 30 timers. 40 x 30=1200

8 0
3 years ago
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I've wasted 42 points already. Can someone PLZ just answer my Question and stop wasting my points. PLz, this is due. I need help
Misha Larkins [42]

Step-by-step explanation:

You can put the value of x into the equation to solve for y. Hopes this works.

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2 years ago
F (x) = 4x + 7. Find the inverse of f(x).
Brilliant_brown [7]

Answer:

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Step-by-step explanation:

NB: Let f(x) = y

Exchange X and Y

Make y the subject

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y = x - 7 all over 4

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What’s 47.5 % as a fraction in simplest form
SpyIntel [72]

Answer:95/2


Step-by-step explanation: you covert the decimal number to a fraction 475/10 then divide both by 5

95/2


6 0
3 years ago
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