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skad [1K]
4 years ago
14

An airliner travels 15 miles in 2 minutes.what is its speed in miles per hour

Mathematics
2 answers:
pychu [463]4 years ago
6 0
(15 miles / 2 minutes) times (60 minutes / 1 hour) = 15 x 60 / 2 = 450 miles per hour.
jonny [76]4 years ago
3 0
Remember:

1 mile per minute = 60 miles per hour

So:

\frac{15 \ miles}{2 \ min}=\frac{15}{2}*60=450 \ miles \ per \ hour
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Which equation, when graphed, has x-intercepts at (2, 0) and (4, 0) and a y-intercept of (0, â€"16)? f(x) = â€"(x â€" 2)(x â€" 4
zmey [24]

To find the equation, for the x-intercepts at (2, 0) and (4, 0) and a y-intercept of (0, –16) we have to find the nature of the curve.

The correct option is f(x) = –2(x – 2)(x – 4).

Given:

The x-intercepts at (2, 0) and (4, 0).

The y-intercept of (0, –16).

The nature of the graph is quadratic curve. Write the general equation for x-intercept.

y=a(x-2)(x-4)

Where is a number

Substitute 0 for x.

y=a(0-2)(-4)\\y=8a

We have y-intercept of (0, –16).

-16=8a\\a=-2

The equation would be,

f(x) = -2(x - 2)(x - 4).

Thus, the correct option is f(x) = –2(x – 2)(x – 4).

Learn more about equitation here:

brainly.com/question/3337307

3 0
3 years ago
I seem to be very confused on this, anyone know the answer
EastWind [94]

Answer:

C

Step-by-step explanation:

You have to put the numbers in order from greatest to least.

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3 years ago
Select the correct answer from each drop-down menu.
olchik [2.2K]

Answer:

d_{n+1}=d_n\,+\,2^n

with d_1=81

Step-by-step explanation:

We can study what happens day by day starting with day one (1) to understand how the recursive relation can be constructed:

Day #     Number of stamps     What is added relative to previous day

1               d1 = 80 + 1 = 81

2              d2 = 81 + 2 = 83            d2 = d1 + 2

3              d3 = 83 + 4 = 87           d3 = d2 + 2^2

4              d4 = 87 + 8 = 95           d4 = d3 + 2^3

5              d5 = 95 + 16 = 111          d5 = d4 + 2^4

6              d6 = 111 + 32 = 143        d6 = d5 + 2^2

(n+1)                                               d(n+1) = dn + 2^n

3 0
3 years ago
You want to buy one DVD for $24.99 and another for $19.99. What is the total price of both DVD's plus tax if the sales tax is 6.
Charra [1.4K]

Answer:

I got 48.03.

Step-by-step explanation:

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Alex bought a small desk for $19, a chair for $18, and a lamp for $11 at the resale shop.
ElenaW [278]
C 48 is closer to 50
5 0
3 years ago
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