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natulia [17]
3 years ago
5

An airplane flies 3800 km in 4 hours 45 minutes. What is its average speed in kilometers per hour?

Mathematics
2 answers:
Oliga [24]3 years ago
8 0
The answer will be 800 kilometers per hour.

Hope this helped!
8_murik_8 [283]3 years ago
3 0

Average speed = (distance covered in some time)  /  (time to cover the distance)

4 hours 45 minutes = 4-3/4 hours = 4.75 hours

Average speed  =  (3,800 km) / (4.75 hours)  =  800 km/hr
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Find the next two terms of the sequence: 80, ?40, 20, ?10, ______, ______. A) 20, 40 B) 1 2 , 1 4 C) 5, ? 5 2 D) ?30, ?40
denis23 [38]

Answer:

The correct option is C) 5, 5/2

The sequence given is:

80, 40, 20, 10, _____, ______

If we look at the given numbers, it appears that every next number is obtained by dividing the previous number of 2.

Like 40 is obtained by dividing 80 by 2

\frac{80}{2}=40

Similarly:

\frac{40}{2}=20

\frac{20}{2}=10

\frac{10}{2} = 5

\frac{5}{2}

Therefore, the complete sequence is:

80, 40, 20, 10, 5, 5/2

Hence the correct option is C) 5, 5/2


6 0
3 years ago
Read 2 more answers
7. Amber has $37 to spend. She bought a coffee for
enot [183]

Answer:

d

Step-by-step explanation:

1.75 ( would be the coffee) + 1.50d (donuts each but an unknown quantity)

total amount must be less than $37 dollars

Your answer would be 37.00 - 1.75 = 35.25 cents

35.25 / 1.50 = 23.5 donuts - you can not purchase a half of a donut  so you can buy 1 coffee and 23 donuts for $36.25

8 0
3 years ago
A stone is thrown upward from ground level. With what minimum speed should the stone be thrown so as to reach a height of 49 fee
Sveta_85 [38]
The correct answer of the given question above would be 8ft/sec. The minimum speed that the stone be thrown so as to reach a height of 49 feet is 8ft/sec. Consider this given solution here:
u^2 = 2x a x 1 
<span>u^2 = 2 x 32 x 1 </span>
<span>u = 8 ft/sec
</span>Hope this answer helps and this is what you are looking for.
6 0
3 years ago
Help please will mark brainliest.
swat32

Answer: the ANSWER IS 11 sqt

Step-by-step explanation:

Factor 1331 into its prime factors

          1331 = 113

To simplify a square root, we extract factors which are squares, i.e., factors that are raised to an even exponent.

Factors which will be extracted are :

          121 = 112

Factors which will remain inside the root are :

          11 = 11

To complete the simplification we take the squre root of the factors which are to be extracted. We do this by dividing their exponents by 2 :

          11 = 11

The simplified SQRT looks like this:

        11 • sqrt (11)  

Simplified Root :

11 • sqrt(11)

7 0
3 years ago
Read 2 more answers
What is the equation in standard form of the line y = 1/9x + 5?
Artist 52 [7]

Answer:

Step-by-step explanation:

9(y = 1/9x + 5)

9y = x + 45

-x + 9y = 45

x - 9y = -45

5 0
3 years ago
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