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bija089 [108]
3 years ago
10

plane has 360 total seats, which are divided into economy class and business class. For every 13 seats in economy class, there a

re 5 seats in business class
Mathematics
1 answer:
Lemur [1.5K]3 years ago
5 0
Do you need the ratio of Economy to Business?
If so, 18 goes into 360 20 times, so 20 x 5 = 100, and 20 x 13 = 260, so
260:100
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The height 'h' (in feet) of a ball in a baseball game can be modeled by h = -16t² + 28t + 8 , where 't' is the time (in seconds)
lidiya [134]

Answer:

  a)  No. t < 0 is not part of the useful domain of the function

  b) 2.0 seconds

Step-by-step explanation:

a) A graph of the function is shown below. It shows t-intercepts at t=-0.25 and t=2.0. We presume that t is measured forward from some event such as the ball being thrown or hit. The model's predicted ball location has no meaning prior to that event, when values of t are negative.

__

b) It is convenient to use a graphing calculator to find the t-intercepts. Or, the equation can be solved for h=0 any of several ways algebraically. One is by factoring.

  h = 0 = -16t² +28t +8 . . . . . . . . . . . . the ball hits the ground when h = 0

  0 = -4(4t² -7t -2) = -4(4t +1)(t -2)

This has t-intercepts where the factors are zero, at t=-1/4 and t=2.

The ball will hit the ground after 2 seconds.

4 0
3 years ago
Interior and Exterior Triangle Angles<br><br> please help asap !!!!
Fiesta28 [93]

Answer:

∠ WUV = 36°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ VWX is an exterior angle of the triangle, thus

8x - 18 = 2x + 8 + 3x + 16

8x - 18 = 5x + 24 ( subtract 5x from both sides )

3x - 18 = 24 ( add 18 to both sides )

3x = 42 ( divide both sides by 3 )

x = 14

Thus

∠ WUV = 2x + 8 = 2(14) + 8 = 28 + 8 = 36°

8 0
2 years ago
Two angles are supplementary. The first angle measures 60°. What is the measurement of the second angle?
sp2606 [1]
Supplementary angles add up to 180 degrees.

so if one angle is 60 degrees, then the other angle is (180 - 60) = 120 
8 0
3 years ago
Please help me !!!!!
Lelu [443]

Answer:

thats hard

Step-by-step explanation:

6 0
3 years ago
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What is the b in this math question -17+b/8=1
brilliants [131]
Are you supposed to find B?
5 0
3 years ago
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