Solve and verify each of the following of linear eequations

2X+3y=432 and 5x-2y=16

Answers

Answer 1

Answer: There are 3 available methods- Substitution , Elimination and Matrix.

To solve this linear equations lets use Matrix's.

$\left[\begin{array}{ccc}2&3&432\n5&-2&16\n\end{array}\right]$

$\left[\begin{array}{ccc}2&3&432\n0&-19/2&-1064\n\end{array}\right]$

$\left[\begin{array}{ccc}2&3&432\n0&1&112\n\end{array}\right]$

$\left[\begin{array}{ccc}2&0&96\n0&1&112\n\end{array}\right]$

$\left[\begin{array}{ccc}1&0&48\n0&1&112\n\end{array}\right]$

$x=48$

$y=112$

Answer 2

Answer: 2x+3y=432 becomes y=-2/3x+144 and 5x-2y=16 which becomes y=5/2x-8

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Yannick’s class measured the width of one leaf several times. The values that the class recorded included 10 mm, 8 mm, 15 mm, 5 mm, and 13 mm. What is lacking from the measurements that the class made?A.calibration
B.precision
C.repetition
D.validation

Answers

"Precision" is the one among the following choices given in the question that is lacking from the measurements that the class made. The correct option among all the options that are given in the question is the second option or option "B". I hope that the answer has come to your desired help.

Answer:

The answer is b i just took the test

Step-by-step explanation:

I need help explain plz

Answers

When you need to divide one fraction by another one,
here's what you do:

-- Flip the second fraction over.
-- Then multiply them.

================================

2/9 divided by 5/12 = 2/9 times 12/5

When you multiply fractions, you multiply the numerators to get the numerator,
and multiply denominators to get the denominator.

2/9 times 12/5 = (2 times 12) / (9 times 5) = 24/45 = 8/15

HI. So our problem is: 2/9 ÷ 5/12, lets start out with what I explained earlier in the other problem: KCF, which represents: Keep Change Flip, you can always use this for dividing, so what we do: Keep 2/9 we Change the ÷ sign to a × (multiply sign) and we Flip 5/12 to 12/5 (improper fraction)... So what is our problem now? :
2/9*12/5= (12*2=24) (5*9=45) So what do we have? 24/45 :) And for simplest form... you can see it is not equal :) Hope that isn't too long!

A movie theater sold a total of 520 adult and child tickets on a certain day. The theater sold 2.25 times as many adult tickets as child tickets. Each adult ticket cost $8 and each child ticket cost $3. How much revenue did the theater generate in ticket sales that day?

Answers

total tickets sold = 520
Adult tickets = 2.25*child tickets
so, 2.25 child tickets + child tickets = 520
no of child tickets = 520/3.25 = 160
no of adult tickets = 160*2.25 = 360
total revenue = 160*3+360*8
= 480+ 2880
=$3360

Which is the best estimate for the quotient of 198.32 ÷ 9.001?A.
2,000

B.
200

C.
20

D.
2
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Answers

The best estimate for the quotient of 198.32 divided by 9.001 is 20. Because if you calculate the equation, the exact answer would be 22.0331074325. The number among the choices which is closest to the exact quotient is 20. Therefore, the answer is letter C. 20.

Answer:

Step-by-step explanation:

I REALLY NEED HELP PLEASE The measures of three line segments are given in each set Which set of line segments cannot form a triangle? 0 23.2 m, 58.6 m, 72.1 m O 45.2 m, 45.3 m, 45.4 m 0 20.8 m, 34.5 m, 54.2 m 0 12.6 m, 18.1 m, 30.9 m

Answers

Answer:

The Answer is D

Step-by-step explanation:

K12

A computer simulation tossed a 10-faced die 5 times. How many possible outcomes exist?

Answers

The answer to the problem wherein a computer simulation tossed a 10-faced die 5 times and you have to compute for the possible outcomes is simple. The answer is 18,144, 000 possible outcomes (if it's a combination). I got this through simply getting the 10! (3,628,800) and multiplying it 5.

However, if order is important (permutation), the number of possible outcomes is is 30240.

Answer:

B 100,000

Step-by-step explanation:

10^5 = 100,000

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