Please help! Hi, I'm stuck on a part of this question, we have to solve using Gauss Jordan Elimination: A corporation wants to lease a fleet of 12 airplanes with a combined carrying capacity of 220 passengers. The three available types of planes carry 10,15,20 passengers. How many of each type of plane should be leased?

Answers

Answer 1

Answer: Do common sense has anything to do with this question? Because
corporation might forget the arbitrary 12 airplane rule
and have 11 times 20 = 220.
But perhaps they get a discount if all 12 hangars are used!

Playing by the rules of the question:-
Let a, b, c be the aeroplanes that carry
10, 15, and 20 passengers, respectively,

a + b + c = 12
10a +15b +20c = 220

We may rearrange these as
4a + 4b + 4c = 48
2a + 3b + 4c = 44
Now subtract
2a + b = 4

There appear to be 3 options
a = 0, b = 4 which means 220 = 0*10 + 4*15 + 8*20
a = 1, b = 2 which means 220 = 1*10 + 2*15 + 9*20
a = 2, b = 0 which means 220 = 2*10 + 0*15 + 7*20

If you dismiss the ones with zeros it may be that
the expected answer to "How many of each plane" is

One that carries 10, 2 that carries 15, and 9 that carries 20

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3,628,800 what is the place value of the 3 in this number?

Answers

That is the millions place.

3,628,800
^Millions

3,628,800
^Hundred thousands

3,628,800
^Ten thousands

3,628,800
^Thousands

3,628,800
^Hundreds

3,628,800
^Tens
3,628,800
^Ones

the 3 in 3,628,800 is three millions because the last zero is ones,the other zero is tens,the eight is hundreds and so on...

I need help solving this

Answers

The area of the triangle is 15*25*sin(30) = 187.5;

When you add 18 to 1/4 of a number you get the number itself

Answers

-- Then when you only have 1/4 of the number, 18 must be
the missing 3/4 of it.

-- If 18 is 3/4 of it, then each quarter of it is 6 .

-- When you have all 4 quarters in the same place, if each one is 6,
then the whole thing must be 24.

What is the correct reason for statement 3?Prove: (2y) ∙ 4 + y = 9y

Statements Reasons
1. (2y) ∙ 4 + y 1. Given
2. 4 ∙ (2y) + y 2. Commutative Property
3. (4 ∙ 2) ∙ y + y 3.
4. 8y + y 4. Commutative Property
5. 9y 5. Addition

Multiplication

Distributive Property

Addition

Associative Property

.

1 points

Question 3

Answers

The answer would be Associative Property.

Hope this helps you =)

Kayden is a stunt driver. One time, during a gig where she escaped from a building about to explode(!), she drove at a constant speed to get to the safe zone that was 160160 meters away. After 33 seconds of driving, she was 8585 meters away from the safe zone. Let D(t)D(t) denote the distance to the safe zone DD (measured in meters) as a function of time tt (measured in seconds). Write the function's formula.