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Nastasia [14]
3 years ago
5

An airplane maintaining a constant airspeed takes as long to travel 925 mi with wind as it does to travel 775 mi against the win

d. If the wind is blowing at 15 mph, what is the rate of the plane in still air
Mathematics
1 answer:
kow [346]3 years ago
5 0

9514 1404 393

Answer:

  170 mph

Step-by-step explanation:

The speed of the airplane can be represented by s. The travel time will be ...

  time = distance/speed

  925/(s +15) = 775/(s -15)

  925(s -15) = 775(s +15)

  150s = 25500 . . . . . . . . . add 13875-775s

  s = 170

The rate of the plane in still air is 170 mph.

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Please help asapppp!!!!
Pavlova-9 [17]

Answer:

The only option 3 is correct

Step-by-step explanation:

See the given diagram.

1. ∠ D = ∠ B {Since AB ║ DE and DB is transverse line. So, they are alternate angles.}

So, ∠ D = 43° ≠ 28°

2. Now, ∠ A = ∠ CED {Again they are alternate angles}

⇒ ∠ A = ∠ CED = 180° - ∠ CEF = 180° - 152° = 28° ≠ 43°.

3. Again, ∠ ACD = 180° - ∠ ACB = ∠ A + ∠ B = 28° + 43° = 71°.

4. ∠ BCE = ∠ ACD {Vertically opposite angles}

⇒ ∠ BCE = 71° ≠ 109°

Therefore, the only option 3 is correct. (Answer)

7 0
3 years ago
Solve f(-4) if f(x) = -4x - 2.
nirvana33 [79]
F(-4)= -4(-4) -2
F(-4)= 14
3 0
3 years ago
Tracey wants to ride her bicycle at least 150 miles this week. She has already ridden her bicycle 42 miles. If she plans on ridi
hichkok12 [17]

Answer:

m=\frac{108}{x}

m=18 mi/day

Step-by-step explanation:

#The distance remaining is:

d=150-42\\\\=108 \ miles

Let m be the number of miles per day for the remaining distance and let x be the remaining number of days:

v=\frac{d}{t}, v-speed, t-time, d-distance\\\\m=\frac{108}{x}\\\\

#Given that the remaining number of days is 6, we substitute and solve for m:

v=\frac{d}{t}, v-speed, t-time, d-distance\\\\m=\frac{108}{6}\\\\=18\ mile/day

Hence her speed per day is 18 mile/day using the inequality m=\frac{108}{x}

4 0
4 years ago
<img src="https://tex.z-dn.net/?f=2%5Cpi%20%2A11%5C%5C" id="TexFormula1" title="2\pi *11\\" alt="2\pi *11\\" align="absmiddle" c
Natasha_Volkova [10]

Answer:

That equals 22π

Step-by-step explanation:

hope this helps

6 0
3 years ago
What is the the value of 3 in 6,300 times the value of 3 in 530?
Sergeeva-Olga [200]
6300:
The 3 is in the hundreds place, so the value is 3*100=300

530:
The 3 is in the tens place, so the value is 3*10=30

Multiply the values
300*30= 9,000

Final answer: 9,000
8 0
4 years ago
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