3 years ago

Pls help It worth 21points

1 answer:

7 0

V=d/t
=> v=120/( $1\frac{3}{4}$ )
v=120/ $\frac{7}{4}$
v=120*4/7
v=480/7 mph
The problem must have an error because the answer is 480/7 and not 7/480 mph.

You might be interested in

14x to the power of -2 , for x=7

OverLord2011 [107]

Answer:

:5:5&&'4&4&4&:&;4"33*2**223$&4&4&55&

6 0

2 years ago

Read 2 more answers

If it takes 6 hours for a plane to travel 720km with a tail wind and 8 hours to make the return trip with a head wind. Find the

denis-greek [22]

The speed of wind and plane are 105 kmph and 15 kmph respectively.

<u>Solution:</u>

Given, it takes 6 hours for a plane to travel 720 km with a tail wind and 8 hours to make the return trip with a head wind.

We have to find the air speed of the plane and speed of the wind.

Now, let the speed wind be "a" and speed of aeroplane be "b"

And, we know that, distance = speed x time.

$\text { Now, at tail wind } \rightarrow 720=(a+b) \times 6 \rightarrow a+b=\frac{720}{6} \rightarrow a+b=120 \rightarrow(1)$

Now at head wind → $720=(a-b) \times 8 \rightarrow a-b=\frac{720}{8} \rightarrow a-b=90 \rightarrow(2)$

So, solve (1) and (2) by addition

2a = 210

a = 105

substitute a value in (1) ⇒ 105 + b = 120

⇒ b = 120 – 105 ⇒ b = 15.

Here, relative speed of plane during tail wind is 120 kmph and during head wind is 90 kmph.

Hence, speed of wind and plane are 105 kmph and 15 kmph respectively.

6 0

3 years ago

Definition of a line segment?

Nostrana [21]

Part of a line but has 2 end point, extends in no direction. example: @[email protected]

5 0

2 years ago

50 points please help!!

igomit [66]

I’m really not to sure sorry about that

8 0

2 years ago

Read 2 more answers

If there is a class of 30 students and 6 of them are off, what fraction of students are there and what percentage of students ar

elena-s [515]

As fraction it would be 6/30 reduced 1/5 and as percentage 20% so 20% of the students were off.<span />

3 0

3 years ago