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AleksandrR [38]
3 years ago
5

RSM Question NEED HELP!!! A cyclist rides into the country at an average speed of 10 miles per hour. When his bicycle gets a fla

t tire, he walks it back at an average speed of 3 miles per hour. If he returns home 6 and a half hours after he starts, how far into the country does he go?
Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
3 0

Let x = distance traveled (not round trip)

x/10 + x/3 = 6.5

13/30x = 6.5

x = 15 miles

answer: 15 miles

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Evaluate the expression Ab/c for <br>A. = 2.1 B.= 4 and c= 0.5<br>​
ELEN [110]
2.1 x 4/0.5
2.1 x 4 = 8.4
8.4/0.5 =
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2 years ago
Two cars at the same point on I-75. One heads north going 75mph and one heads south going 60mph. How long will it take for the c
Mice21 [21]

It will take 3 hours 6 minutes 40 seconds for the cars to be 420 miles apart.

Step-by-step explanation:

Step 1; The cars are traveling in the opposite direction at different speeds. One is going north at a speed of 75 mph while the other is going 60 mph. So for every hour, the cars are traveling they increase the distance between in between themselves by 75 miles + 60 miles = 135 miles.

Step 2; Assume that in x hours the distance between them is 420 miles. To calculate x we divide the distance to be traveled by the distance being traveled every hour.

x = distance to be covered / distance being traveled every hour

= 420 / 135 = 3.11 hours

We multiply the 0.11 hours with 60 to convert it into minutes. 0.11 × 60 = 6.66 minutes and if we do the same for seconds, 0.66 minutes × 60 = 40 seconds.

5 0
3 years ago
Calculate the length of the circumference of a circle with a diameter of 14cm (2dp)
kondaur [170]
C= 2 (pi) r

d= 14 cm

d= 2r 

r= 7 cm

c= 2 (pi) (7cm)
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hope that helps

3 0
3 years ago
Someone please show me how to do this
Degger [83]
The 1 represents the y intercept so a point is (0,1). To find other points, plug in values for x. For example, plus in x and you get a y value of 2. So just plot a number of points and then connect them with a curved line( called a parabola).
8 0
3 years ago
Read 2 more answers
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Afina-wow [57]

Answer:

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Step-by-step explanation:

You need to complete the square before you can take the square root of both sides.

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Subtract 10 from both sides.

x^2 + 7x = -10

To complete the square, you need to add the square of half of the x-term coefficient to both sides.

The x-term coefficient is 7. Half of that is 7/2. Square it to get 49/4. Now we add 49/4 to both sides of the equation.

x^2 + 7x + \dfrac{49}{4} = -10 + \dfrac{49}{4}

(x + \dfrac{7}{2})^2 = -\dfrac{40}{4} + \dfrac{49}{4}

(x + \dfrac{7}{2})^2 = \dfrac{9}{4}

Now we use the square root property, if

x^2 = k, then

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x + \dfrac{7}{2} = \pm \sqrt{\dfrac{9}{4}}

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x = -\dfrac{4}{2}   or   x = -\dfrac{10}{2}

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5 0
3 years ago
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