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Thepotemich [5.8K]
3 years ago
7

PLEASE HELPPPPPP ME ASAP

Mathematics
1 answer:
dalvyx [7]3 years ago
8 0

Answer: 78

Step-by-step explanation:

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With a certain tail wind a jet aircraft arrives at its destination, 1,890 miles away, in 3 hours. Flying against the same wind,
Gelneren [198K]
<span>Find the wind speed and the plane's airspeed.
:
Let s = speed of the plane in still air
Let w = speed of the wind
then
(s-w) = plane speed against the wind
and
(s+w) = plane speed with the wind
:
Change 3 3/8 hrs to 3.375 hrs
:
The trips there and back are equal distance, (1890 mi) write two distance equations
dist = time * speed
:
3.375(s-w) = 1890
3.0(s + w) = 1890

:
It is convenient that we can simplify both these equations:
divide the 1st by 3.375
divide the 2nd by 3
resulting in two simple equations that can be used for elimination of w
s - w = 560
s + w = 630
----------------adding eliminates w, find s
2s = 1190
s = 
s = 595 mph is the plane speed in still air
Find w
595 + w = 630
w = 630 - 595
w = 35 mph is the wind spee</span>
3 0
3 years ago
500 plates cost $18.00 what does each plate cost​
ozzi

Answer:

$0.036

Step-by-step explanation:

I will be solving this questions in a rational, proportional way.

This question given is directly proportional. There are two types of proportion.

Direct - Let's say there are two values, x and y. In direct proportion, while x   increases, y increases with it.  

Inverse- Taking x and y, in inverse proportion, while x increases, y decreases or while y increases, x decreases.

In the given example, there are two values, number of plates and cost of plates. While the number of plates increases, the cost would surely increase. Therefore, giving us that it is a direct proportion.

500 plates : $18.00 :: 1 : $x

500 plates is to 18 dollars, then, 1 plate is to how many dollars?

In direct proportion, the product of extremes is equal to the product of means.

500(x) = 18(1)

500x = 18

x = 18 / 500

x = 0.036

Hence, one plate costs $0.036 or 3.6 cents

5 0
3 years ago
Read 2 more answers
A table shaped like a solid cube needs to painted. All six faces of the table must be painted. The edge length of the table is 1
Dvinal [7]
C. 8.64m^2 because one face of the cube has a surface area of 1.44m^2 (1.2*1.2) and a cube has 6 sides (6*1.44).
3 0
3 years ago
Help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Ann [662]

Hey!

so for the first one its 60°, and for the second one its 1/6

3 0
3 years ago
Point B(5, -6, -1) is translated using the transformation (x - 2, y + 3, z + 1). What are the coordinates of B´?
denpristay [2]
   
B(5 - 2, -6 + 3, -1 + 1) = B(3, -3, 0)



6 0
3 years ago
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