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3 years ago

PLEASE HELP

Mathematics

1 answer:

V125BC [204]3 years ago

8 0

Multiplication :))
it’s the order of operations!

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In june 2005 peter mailed a package from his local post office in fayetteville north carolina to a friend in radford virginia fo

erik [133]

0.23w = 2.07

w = 2.07 ÷ 0.23

w = 9 ounces

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3 years ago

This right rectangular prism is filled with 1/3-foot unit cubes.

MAXImum [283]

Answer:

0-0 me just joined today and im already at helping hand yay

Step-by-step explanation:

12 would be your anwer

5 0

3 years ago

A plane flew 720 mi with a steady 30 mi/h tailwind. The pilot then returned to the starting point, flying against that same wind

NNADVOKAT [17]

Answer:

Plane's speed is 150 miles/hour

Step-by-step explanation:

Let the plane's airspeed be x

Speed of wind is 30 miles/hour

When a plane flew with the wind , Speed = (x+30)

So, the speed plain with wind on going = (x+30)

Since we are given that on returning plane fly against the wind .

So,When a plane flew against the wind , Speed = (x-30)

So, the speed plain against wind on returning = (x-30)

Distance = 720 miles .

$Time = \frac{Distance}{Speed}$

So, time on going $=\frac{720}{(x+30)}$

Time on returning $=\frac{720}{(x-30)}$

Now we are given that the total time for the whole trip (going + returning) = 10 hours.

So, $\frac{720}{(x+30)}+\frac{720}{(x-30)}=10$

$\frac{720x-21600+720x+21600}{(x+30)(x-30)}=10$

$720x-21600+720x+21600=10(x+30)(x-30)$

$720x+720x=10(x+30)(x-30)$

$1440x=10(x^2 -[30]^2)$

$144x=x^2 -900$

$x^2-144x -900=0$

$x^2-150x+6x -900=0$

$x(x-150)+6(x -150)=0$

$(x-150)(x+6)=0$

$x= 150,x= -6$

So, the plane's speed is 150 miles/hour

4 0

3 years ago

Which angle measure is the measure of an obtuse angle? 90° 64° 105° 87°

fenix001 [56]

Answer:

105°

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the 12th term of the geometric sequence -4,-12,-36...?

aleksandrvk [35]

Answer:

12 term is-5832 okkkkk

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3 years ago