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Jet001 [13]
3 years ago
5

Raul=Distance in miles was 31 1/4 his start time was 1:50 pm and end time was 4:20pm.If Raul rode at constant speed ,how fast di

d he travel in miles per hour?
Mathematics
1 answer:
kotegsom [21]3 years ago
3 0
Raul took 2 hours and 30 mins to bike 31 1/4 miles. Well 31 1/4 is equivalent to 31.25 and 2hr 30mins is equivalent to 2.5. Now we need to divide the distance by the time to get the rate in mph. 31.25/2.5 = 12.5  So Raul rode at 12.5 miles per hour. 
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1. HELP Use front-end estimation to estimate the sum 8.86 + 9.43 + 5.75
marta [7]

Answer:

1. Option D.

2. Option A.

Step-by-step explanation:

1. You need to follow these steps in order to estimate the sum of 8.86 + 9.43 + 5.75:

Step 1: Add the digits in the ones places of the whole numbers (these are: 8, 9 and 5).

Step 2: Round the decimals to the nearest whole number:

0.86\approx 1\\\\0.43\approx0\\\\0.75\approx1

 Step 3: Add them together:

8+9+5+1+0+1=8+9+5+2=24

2. The procedure to estimate  the difference of 83.92-47.23 is:

83.92-\\47.23\\........\\40.00\\\ -4.00\\\ \ + 0.70\\-0.01\\...........\\+36.00\\+0\ 0.69\\..............\\36.69

Rounded to the nearest whole number:

36.69\approx 37

5 0
3 years ago
For a charity event, Jean biked at a fixed speed from Pine Bluff to Newberry. The graph shows the distance she rode along the y-
tamaranim1 [39]

Answer:

<u>The average speed or proportionality constant (y to x) of Jean biking from Pine Buff to Newberry to go to the charity event was 15 miles per hour</u>

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Distance from Pine Bluff to Newberry (y axis) = 75 miles

Time it took Jean to rode her bicycle (x axis) = 5 hours

2. The proportionality constant (y to x) is?

We can calculate the answer this way:

Proportionality constant (y to x) = Distance from Pine Bluff to Newberry (y axis)/Time it took Jean to rode her bicycle (x axis)

Substituting with the real values, we have:

Proportionality constant (y to x) = 75/5

Proportionality constant (y to x) = 15 miles per hour

<u>The average speed or proportionality constant (y to x) of Jean biking from Pine Buff to Newberry to go to the charity event was 15 miles per hour</u>

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3 years ago
Which diagram shows the construction of the perpendicular bisector of AB?
OLga [1]

Answer:

a

Step-by-step explanation:

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3 years ago
A car travels a total distance of 150km. At the 50 minutes mark the car has travelled 50km and at the 110 minutes the car has tr
Nitella [24]

Answer:

The average velocity is 19.44 m/s.

Step-by-step explanation:

The average velocity between two points can be calculated with the following formula:

\bar v=\dfrac{\Delta X}{\Delta t}=\dfrac{(120-50)\, km}{(110-50)\, min}=\dfrac{70\,km}{60\,min}\\\\\\\bar v=1.667\dfrac{km}{min}*\dfrac{1\,min}{60\,s}*\dfrac{1000\,m}{1\,km}=19.44\dfrac{m}{s}

The procedure is to calculate the difference for both distance and time, and dividing the two differences, we get the average velocity.

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