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Fittoniya [83]
3 years ago
13

Help? I forgot how to do this lol I have really bad memory

Mathematics
1 answer:
pashok25 [27]3 years ago
8 0
\dfrac{2}{3} \times  \dfrac{3}{4}  \times  \dfrac{1}{2}

Cancel out 2, the common factor for the numerator and denominator:

=  \dfrac{1}{3} \times  \dfrac{3}{4}  \times  \dfrac{1}{1}

Cancel out 3, the common factor for the numerator and denominator:

=  \dfrac{1}{1} \times  \dfrac{1}{4}  \times  \dfrac{1}{1}

Combine into single fraction:

=  \dfrac{1 \times 1 \times 1}{1 \times 4 \times 1 }  =  \dfrac{1}{4}

\bf \text {Answer = }  \dfrac{1}{4}

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Matt and Anna Killian are frequent fliers on​ Fast-n-Go Airlines. They often fly between two cities that are a distance of 1680
vladimir1956 [14]

Answer:Wind speed = 30 miles/hour

Plane speed = 450 miles/hour

Step-by-step explanation:

First we have to know the formula for finding speed, which is distance divided by time

Speed = distance/time

Then we label the speed of the plane to be x

And the spend of the wind to be y

From the question, we are told that when the plane flies into the wind, it takes 4 hours to travel a distance of 1680 so we have the time and distance

And since the plane is flying against the wind speed

We can form an equation

x - y = 1680/4

x - y = 420 (1)

Then when the plane is coming back, the wind is going in the same direction with the plane and it take 3.5 hours to cover the same 1680 miles distance, so we form another equation

x + y = 1680/3.5

x + y = 480 (2)

So we solve (1) and (2) simultaneously

x - y = 420 (1)

x + y = 480 (2)

Using elimination method, we eliminate y by adding both equations

2x = 900

x = 450 miles/hour

So therefore, plane speed is 450 miles/hour

Putting the answer in either (1) or (2) to get y

I choose to put it in (2)

x + y = 480

450 + y = 480

y = 480 - 450

y = 30 miles/hour

So therefore, wind speed = 30miles/hour

4 0
3 years ago
Bella's back garden deck cost ₹5,391.47 per square metre to build. The deck is 11 metres wide and 12 metres long. How much did i
Gwar [14]

Answer:

₹711,674.04

Step-by-step explanation:

1.firstly we need to solve for the total area of Bella's back garden deck.

2. Then we need to estimate mate the total cost of the garden given that a square metre cost ₹5,391.47 to build.

Given

length of garden = 12 metres

width of garden = 11 metres

Hence the area of the garden is given as

Area= length* width

Area = 12*11= 132m^2

if a square metre cost ₹5,391.47 to build.

132 square metre will cost= ₹5,391.47*132= ₹711,674.04

6 0
3 years ago
A car used 1/75 of a gallon of gas to drive 1/5 of a mile. At this rate, how many miles can the car travel using 1 gallon of gas
brilliants [131]

Answer:

15 Miles/Gallon

Step-by-step explanation:

M/G\\\frac{1}{5} /\frac{1}{75}\\\frac{1}{5} *\frac{75}{1}\\\frac{1}{1}*\frac{15}{1}  (75/5=15, cancels)\\1*15\\15

7 0
3 years ago
Jack is buying a video game for $54.00 and has to pay 7.5% sales tax. What is the final price Jack
Nana76 [90]

Answer:

Jack will pay 58.05$. jsjsksjsj

8 0
3 years ago
Simplify each expression -10-(-8)+(-4)-20
nata0808 [166]

-10- ( -8 ) + ( -4 ) - 20

=  -10 + 8 - 4 - 20

= -2 - 4 - 20

= -6 - 20

= -26 <=== answer

5 0
3 years ago
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