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Cloud [144]
2 years ago
11

7.6.35 Question Help A pilot can travel 400 miles with the wind in the same amount of time as 352 miles against the wind. Find t

he speed of the wind if the​ pilot's speed in still air is 329 miles per hour
Mathematics
1 answer:
Law Incorporation [45]2 years ago
5 0

9514 1404 393

Answer:

  21 miles per hour

Step-by-step explanation:

Let w represent the wind speed. Then the travel time is ...

  400/(329 +w) = 352/(329 -w)

  400(329 -w) = 352(329 +w)

  (352+400)w = 329(400 -352)

  w = (400 -352)/(400 +352)·329 = 48/752·329 = 21

The wind speed is 21 miles per hour.

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Find the volume of rectangular prism if the length is 4X +3 with is X -6 and a height is 2X -1
cricket20 [7]

Answer: 8x³ - 46x² - 15x + 18

Step-by-step explanation:

To find the volume of a rectangular prism we will multiply each of the three dimensions given

First, let's multiply 4x+3 by x-6: (4x+3)(x-6) = 4x² - 21x - 18

Then we will multiply 4x²... by 2x-1: (4x²-21x-18)(2x-1) = 8x³ - 46x² - 15x + 18

5 0
3 years ago
What is the value of the expression ​
Westkost [7]

Answer:

2.0 \times  {10}^{4}

Step-by-step explanation:

\frac{2.8 \times  {10}^{7} }{1.4 \times  {10}^{3} }  \\ 2 \times  {10}^{7 - 3}  \\ 2 \times  {10}^{4}

3 0
2 years ago
Read 2 more answers
If Tony can run 3 miles in 18 minutes. How far can he run in 27 minutes?
Rzqust [24]
4 miles and half because every 6 minutes Tiny runs 1 mile.
4 0
3 years ago
2) (3 pt) Write the function from the table and graph.хf(x)-10004122130.52) f(x) =
DaniilM [7]

(x - h)^2 = 4p(y - k)

(-1 - 3)^2 = 4p(8 - 0.5)

(-4)^2 = 4p(7.5)

16 = 30p

p = 16/30

p = 8/15

(x - 3)^2 = 16/15(y - 0.5)

15(x^2 - 6x + 9) = 16y - 8

15x^2 - 90x + 135 = 16y - 8

16y = 15x^2 - 90x + 135 + 8

y = 15/16 x^2 - 90/16 x + 143/16

f(x) = 15/16 x^2 - 90/16x + 143/16

4 0
10 months ago
1. In order to save for her high school graduation, Kathrina decided to save ₱200 at the end of every other month, starting the
max2010maxim [7]

Answer:

1) 202.52

2) P107089

Step-by-step explanation:

Compound interest is calculated as

A = P (1 + r/n)^(nt), where

A = compounded interest

P = present value

r = interest

n = number of times interest applied

t = time taken

A = 200 (1 + 0.25%/30)^(30 * 5)

A = 200 (1 + 8.3*10^-5)^150

A = 200 * 1.0126

A = 202.52

Present Value Annuity Due is usually given by the formula

P = c*((1-(1+ i)^(-n))/i)*(1 + i ), where

P is the present value

C is the Cash flow per period

i is the interest rate and

n is the number of payments

P = 10000*((1-(1+ 12/1200)^(-1*12))/(12/1200))*(1+12/1200)

P = 113676

Also, it's worthy of note that

Effective Annual Rate = [(1 +stated rate/no. of compounding periods) ^no of compounding periods - 1]* 100

EAR = ((1+12/(12*100))^12-1)*100

EAR = 12.68%

And lastly, the

Future value = present value*(1+ rate)^time

113676 = Present value*(1+0.1268)^0.5

Present Value = 113676 / 1.1268^0.5

Present Value = 113676 / 1.0615

Present value = 107089

5 0
2 years ago
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