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Mariulka [41]
3 years ago
15

How do u do cross multiplication

Mathematics
1 answer:
koban [17]3 years ago
3 0
U take the denominator in the equation and multiply it by the opposite numerator
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Given the equation y=12x, x representing number of hours worked, y representing amount of money earned, how much would John earn
JulijaS [17]

9514 1404 393

Answer:

  72

Step-by-step explanation:

Substitute 6 for x in the equation and do the arithmetic.

  y = 12x

  y = 12·6 = 72

John earns 72 money units in 6 hours.

8 0
3 years ago
You ride your skateboard to school and tell all your friends you rode at a speed of 25 mph. They know this cannot he true becaus
andrew-mc [135]
<span>The distance between your house and school and how long it took you to get there</span>
7 0
3 years ago
Jovana is inviting 9 friends to a party each friend wants 7 cookies and each box has 12 cookies how many boxes should Jovana get
gulaghasi [49]

Answer:

3boxes

Step-by-step explanation:

1st we should know the number of cookies

7*5=35

Divide the total of cookies to cookies per box 35/12=2 11/12

2 boxes and 11 cookies remaning (they need an extra box)= 3 boxes

8 0
2 years ago
What is the shaped called that looks like a rectangle with sides of a triangle (has 6 sides)
Oxana [17]

Its called a hexagon.

6 0
3 years ago
In the book,the distance between two planets is given as 4.07×10^¹² kilometres. The speed of light is 1.1×10^⁹ kilometres per ho
Sphinxa [80]

Answer:

3700hours

154days

Step-by-step explanation:

Speed can be defined as the distance cover per time, it can be expressed as

Speed= distance/ time........eqn(1)

Given:

distance between two planets= 4.07×10^¹²

speed of light = 1.1×10^⁹ kilometres per hour

Time= ??

Then substitute the values into equation (1) we have

Speed= distance/ time

1.1×10^⁹ kilometres per hour= 4.07×10^¹²kilometre/ time

Cross multiply, we have

Time= (4.07×10^¹²kilometre) /(1.1×10^⁹ kilometres per hour)

Time= 3700hours.

To convert to day, we know that

60 minute= 1hour

24hour=1day

Time= (3700hour×1day)/24hour

Time= 154days approximately.

Hence, the time taken for light to travel from one of these planets to the other is 154days or 3700hours

7 0
3 years ago
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