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Sindrei [870]
3 years ago
9

3. An airplane flies 105 miles in ½ hour. How far can it fly in 1 ¼ hours at the same rate of speed?

Mathematics
2 answers:
ella [17]3 years ago
6 0

Answer:

105 at 30 min.

<em>x</em> at 75 min.

105 mph x 2 = 210 mph at one hour

There is still 15 min to go soooo...

210/4 = 52.5

210 + 52.5 = 262.5 mph for 75 min

Check by dividing

262.5/75=3.5

raketka [301]3 years ago
5 0
262.5 miles
explanation 1/4 is half of 1/2 so 52.5 is half of 105 and then 210 for an hour of travel
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In a geometry class, the students were asked to prove the theorem below by contradiction.
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3 years ago
Which is an ordered pair on the line 2.5,14 2.25,12 1.25,5 1.5,9
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I would think that all but one point would be on the line.  One way to approach this problem is to find the equation of the line based upon any two points chosen at random, and then determine whether or not the other points satisfy this equation.  Next time, would you please enclose the coordinates of each point inside parentheses:  (2.5,14), (2.25,12), and so on, to avoid confusion.
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What is the eqn of the line:     y = mx + b becomes

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14-20 = b = -6.  Then,   y = 8x - 6.

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5 0
3 years ago
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e-lub [12.9K]

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Miranda's car :

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3 0
3 years ago
Read 2 more answers
Evaluate x(y-z)2 for =-1,y=5,and z=
Nata [24]

Answer:

The value of x(y-z)^2 is -16.

Step-by-step explanation:

We need to evaluate x(y-z)^2 for x = -1, y = 5 and let us assume that z = 1

It can be simply done by putting the values of x,y and z in the given expression.

x(y-z)^2=(-1)(5-1)^2\\\\=-1(4)^2

We know that the value of 4² = 16

So,

x(y-z)^2=16\times -1\\\\=-16

So, the value of x(y-z)^2 is -16.

6 0
3 years ago
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