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Rama09 [41]
3 years ago
15

In one day, Annie traveled 7 times the sum of the number of hours Brian traveled and 4. Together they traveled 56 hours. Find th

e number of hours each person traveled.
Mathematics
1 answer:
Alenkinab [10]3 years ago
7 0

Find out the hours travels by the annie and brian

To proof - Let us assume that the hours travelled by brian be x.

As given in the question Annie traveled 7 times the sum of the number of hours Brian traveled and 4.

So, Annie travelled = 7(x+4)  and Brian travelled = x

Total hours travel by them is 56.

According to question:

x +7 ( x+4) = 56

x+7x +28=56

8x=56-28

x=3.5 hours

Therefore,  Brian travel for 3.5 hours and Annie travels for the 52.5 hours.

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A sample of 100 people is classified by gender (male/female) and by whether they are registered voters. The sample consists of 8
Alex_Xolod [135]

Answer:

80

Step-by-step explanation:

Using this as a guide,

Number of Registered voters = 60

Number of non registered voters = 40

Total number of women in sample is 80

Total number of men in sample is 20

Thus, the expected frequencies for female registered voters

= (80/100)*60

= 48

Expected frequency for female non registered voters is

= (80/100)*40

= 32

Therefore, the total number of females for the expected frequencies is

48+32 = 80

6 0
3 years ago
Your cell phone carrier charges you a flat rate of $60 a month for unlimited talk/text and 4 GB of data. You are charged $5 for
Musya8 [376]
If you use 7 GB of data, you will spend $75.

I would switch my plan because in the end, the new plan would cost less than the original plan by approximately $10.

If you use 10 GB on your old plan, you would spend $90 monthly. but with the new plan you would only be spending $80.

I hope I was able to help.
5 0
3 years ago
Auto-Check Motors charged Mr. Jones $84.00 for an automotive part plus $68.00 per hour that a mechanic worked to install the par
avanturin [10]

You're going to want to take the total, which is $353.00 and subtract the initial cost, which is $84.00, the number now should be $269. Using that total divide it by $68.00, there you should find your answer of about 4 hours. The precise answer is 3.99588235. But you would round that to 4 hours.

5 0
3 years ago
Is the square root of 1/4 a rational number
Mrrafil [7]
Yes the square root of 1/4 is a rational number
3 0
3 years ago
Find the value of x, y, and z in the figure below:<br> ہ<br> 2y<br> IN<br> 2x<br> 90°<br> t
natima [27]

Answer:

x=30°

y=15°

z=150°

Step-by-step explanation:

2x+90+x=180°

2x=180°-90°

x=90/3

x=30

2y=x

y= 30/2

y=15°

2y°+z°=180°

2(15°)+z°=180°

z=180°-30°

z=150°

Hope it helps! :)

6 0
2 years ago
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