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Mekhanik [1.2K]
2 years ago
15

A car travels a distance of 1280 metres at an average speed of 64 kilometres per hour.

Mathematics
1 answer:
Colt1911 [192]2 years ago
6 0

Answer:

The answer is 20 hours

Step-by-step explanation:

This is becuase 1280 divided by 64 equals 20.  There are no unit coversions.

dxazsaa
2 years ago
Hi, I had a question, how will the answer be if it requires for it to be in seconds? Ive seen some other websites but none have a proper explanation. I was wondering if you could help
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In the two diagrams, all the triangles weigh the same and all the squares weigh the same.
dimulka [17.4K]

Answer:

1. A triangle weighs more than a square.

2. A triangle could weigh more than a circle.

3. A triangle cannot possibly weigh more than 4 squares and a circle.

4 0
3 years ago
Keiko determined that the coordinate points (–4, 0), (–3, –1), and (2, –6) are solutions to the following system. y = − x − 4 y
Bess [88]

Answer:

only (-4,0) is a reasonable solution.

Step-by-step explanation:

In order to see which ones are reasonable we need to apply the points to the system and check if they make both equations valid at the same time.

y = -x - 4

y = x² + x - 12

For (-4, 0):

0 = -(-4) - 4 -> 0 = 4 -4 -> 0 = 0 (valid)

0 = (-4)² - 4 - 12 -> 0 =  16 - 16 -> 0 = 0 (valid)

For (-3, -1):

-1 = -(-3) -4 -> -1 = 3 -4 -> -1 = -1 (valid)

-1 = (-3)² -1 - 12 -> -1 = 9 -13 -> -1 = -4 (invalid)

For (2, -6):

2 = -(-6) - 4 -> 2 = 6 -4 -> 2 = 2 (valid)

2 = (-6)² -6 -12 -> 2 = 36 -18 -> 2 = 18 (invalid)

Therefore only (-4,0) is a reasonable solution.

7 0
3 years ago
The mean of the temperatures in the chart is 24° with standard deviation of 4°. How many years had temperatures within one stand
lions [1.4K]

Answer:

Step-by-step explanation:

Given: The mean of the temperatures in the chart is 24° and standard deviation is 4°.

To find: How many years had temperatures within one standard deviation of the mean

Solution: Mean temperature μ = 24 , standard deviation σ =4

The lower and upper bound for temperature within one standard deviation of the mean is given as:

Lower bound = μ - σ = 24 - 4=20

Thus, the Lower bound is = 20

Upper bound = μ + σ = 24+ 4=28

Thus, the Upper bound is = 28

Now, The temperature value between (Lower bound, Upper bound) that is (20, 28) is said to be within one standard deviation of the mean.

Hence 27° is the temperature value that is within one standard deviation of mean.

5 0
2 years ago
Read 2 more answers
Help me with my math please
monitta

Answer:

Volume of a cylinder = πr²h

Given

V=81π

r=3

find h

Making h the subject

h= V/πr² = 81π/π(3)²

h= 81/9

h= 9cm

3 0
3 years ago
Read 2 more answers
–3(x – 14) + 9x = 6x + 42
sesenic [268]

Answer:

All real numbers

0 = 0

Step-by-step explanation:

Hope i'm right

Solving this equation results in the statement 0 = 0. Because this is a true statement, the equation has infinitely many solutions.

3 0
2 years ago
Read 2 more answers
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