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photoshop1234 [79]
3 years ago
6

An airplane heads in the direction of N25°E at 325 mph. A tailwind is blowing in the direction N40°W at 50 mph. What is the actu

al velocity of the plane? A) 315.786 mph B) 349.084 mph 438.064 mph D) 121860.018 mph​
Mathematics
1 answer:
geniusboy [140]3 years ago
6 0

Answer: I Think It’s A 315.786

Step-by-step explanation: Let me know if that’s correct

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Enter the value of the 8 in the following number. 438.13
d1i1m1o1n [39]

Answer:

8

Step-by-step explanation:

It is in the one's place, so it is just 8x1, which is 8

8 0
2 years ago
What is the equation of the line expressed in slope-intercept form?
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(x,y)
x=how far to the right
y=how far up
ok so
y=mx+b
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b=y intercept or where the line intercept the y axis

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3 years ago
Nick was surveying his field and saw some cows and ducks. Nick counted a total of 80 heads and
Natali [406]

Answers:

  • Total equation:  x+y = 80
  • Legs equation:  2x+4y = 248
  • How many ducks? 36
  • How many cows? 44

====================================================

Further explanation:

  • x = number of ducks
  • y = number of cows

x+y = 80 is the total equation (ie the head count equation) since we assume each animal has 1 head, and there are 80 heads total.

That equation can be solved to y = 80-x after subtracting x from both sides.

The legs equation is 2x+4y = 248 because...

  • 2x = number of legs from all the ducks only
  • 4y = number of legs from all the cows only
  • 2x+4y = total number of legs from both types of animals combined

We're told there are 248 legs overall, so that's how we ended up with 2x+4y = 248

------------

Let's plug y = 80-x into the second equation and solve for x.

2x+4y = 248

2x+4( y ) = 248

2x+4( 80-x ) = 248

2x+320-4x = 248

-2x+320 = 248

-2x = 248-320

-2x = -72

x = -72/(-2)

x = 36

There are 36 ducks

Now use this x value to find y

y = 80-x

y = 80-36

y = 44

There are 44 cows.

------------

Check:

36 ducks + 44 cows = 80 animals total

36*2 + 44*4 = 72 + 176 = 248 legs total

The answers are confirmed.

5 0
2 years ago
Find three prime numbers that add up to another prime number.
Illusion [34]
5+7+11=23
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3 years ago
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What is the equation of the line of best fit for this data
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Answer:

y = 0.96x + 0.57


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