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sammy [17]
3 years ago
8

A car travels at a steady speed and takes 5 hours to travel 510 miles work out the average soeed

Mathematics
2 answers:
kenny6666 [7]3 years ago
4 0
Hi there! The answer is 102 mph.

A car travels at a steady speed and takes 5 hours to travel 510 miles.

To work out the average speed, we only need to find the speed per hour (miles per hour - mph). Since we now have our distance covered in 5 hours, we must divide by 5.

Distance covered per hour = 510 miles / 5 hours = 102 miles per hour.

Therefore the speed is 102 mph.
klasskru [66]3 years ago
3 0

102 miles per hour is the answer.

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Substract 6 to both sides and you get 36 =-2d then you use the multiplicative inverse and d=-18.
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One type of insect is 0.0052 meters long. What is the lenght in scientific notation
Ket [755]

Answer:

5.2 × 10^{-3}

Step-by-step explanation:

a number in scientific notation is expressed as

a × 10^{n}

where 1 ≤ a < 10 and n is an integer

write 0.0052 as a number between 1 and 10, that is 5.2

we have to the move the decimal point 3 places to the left to retain it's value

3 places left means n is - 3

0.0052 = 5.2 × 10^{-3}


8 0
3 years ago
Question 13 (4 points) (05.03) Which of the following statements best describes the graph of -5x + 2y = 1? (4 points)
alexandr1967 [171]

Answer:

  C) straight line through (1, 3) ... (-3, -7)

Step-by-step explanation:

The linear equation will describe a straight line. The slope and general location of the line on a graph can be estimated from its x- and y-intercepts.

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<h3>intercepts</h3>

The x-intercept is the value of x that satisfies the equation when y=0.

  -5x +2·0 = 1

  x = -1/5 . . . . . . divide by the coefficient of x

The y-intercept is the value of y that satisfies the equation when x=0.

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  y = 1/2 . . . . . . divide by the coefficient of y

<h3>nature of the graph</h3>

The intercept values mean the line crosses the positive y-axis and the negative x-axis. It will have a positive slope. Points on the line that have integer x- and y-coordinates will have coordinates that have the same sign.

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2 years ago
??????????????????????????????????????????????????
AnnyKZ [126]

Answer:

what's the question ndndn

6 0
3 years ago
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The area of a rectangle is 243.9 m2. If the length is 15 m, what is the perimeter of the rectangle?
patriot [66]

Step-by-step explanation:

Given

Area of rectangle (A) = 243.9 m²

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first calculating the breadth (b)

We know

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b = 243.9/ 15

b = 16.26 m

Now

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Hope it will help

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