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vodomira [7]
3 years ago
12

An aircraft flying at an average speed of 770 km/h takes 15 hours to complete a journey. Find the time taken for the aircraft to

complete at same journey if it's average speed is 660 km/h
Mathematics
2 answers:
Hoochie [10]3 years ago
8 0
We can solve it two ways, we´ll do it via physics:
We know that:
d=vt
d=770km/h*15h
d=11550km
Now at 660km/h:
t=d/v
t=11550km/660km/h
t=17,5h
Math way:
770km/h→15h
660km/h→x
So:
(770*15)/660=x
x=17,5h
inessss [21]3 years ago
4 0
Seventeen hours and fifteen minutes
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. $1000 was invested into an account with k = 12, r = 6%. How long one needs to wait until it
Natali5045456 [20]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
when 1770 is divided into 14 equal parts, the remainder is 6. what is the correct way to write th quotient
Anuta_ua [19.1K]
__6__
14 /1770. that's it if that's what ya needed.
4 0
3 years ago
Plz help 14 points
ValentinkaMS [17]
 1)Rewrite the table:
70,  49,  34.3,  24.01,  11.807 {The original size of the wound =70}

2) write the quotient of each number by the number before & notice the value:

49/70= 0.7
34.3/49 = 0.7
24.01/34.3 =0.7
16.0807/24.01 = 0.67 ≈0.7
You notice this is a geometric progression with r 0.7
The last term in a GP =ar^⁽ⁿ⁻¹⁾


3) Domain and Range of this function:
Last term = a₁.rⁿ⁻¹. let last term be y==> f(n) = y =70(0.7)ⁿ⁻¹
or f(n) = y = 70(0.7)ⁿ / 0.7==> f(n) = [(0.7)ⁿ ]/ 100.
This is a decreasing exponential function where the coefficient
raised to n is < 1.
The domain is for all n>= 0.
When n→∞, f(n)→0; For n=0==>f(n) =70. So the range of f(n) is:<=70

7 0
3 years ago
The button on ernestos shirt has a diameter of 8 millimeters.what is the buttons radius
erma4kov [3.2K]

Answer:

4 mm

Step-by-step explanation:

The radius is half the diameter, so in this case the radius of each button is 4 mm.

5 0
3 years ago
Read 2 more answers
Solve the system by substitution
Tatiana [17]

Answer:

(x,y) = (-36,6)

Step-by-step explanation:

-6y=x

x+y=-30

x=-6y,

so -6y+y=-30

-5y=-30

y=6

x=-36

Hope this helps pls hit the crown :D

8 0
3 years ago
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