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Iteru [2.4K]
2 years ago
5

How to work out ratio​

Mathematics
1 answer:
-Dominant- [34]2 years ago
3 0

Answer:

To work out how much each person gets you then multiply theirshare by 100.

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WHY IS NOBODY HELP ME I GOT 2 OTHER QUESTIONS POSTED AND NOBODY ANSWERED ME
andriy [413]
Not everybody knows the answers and sees your questions
3 0
2 years ago
Read 2 more answers
Solve the system of linear equations using any method you choose:<br> -6x + 3y = 18<br> 10x - y = 4
mihalych1998 [28]

9514 1404 393

Answer:

  (x, y) = (1.25, 8.5)

Step-by-step explanation:

I choose to put these equations into reduced general form, then use the "cross multiplication method" to solve.

  2x -y +6 = 0

  10x -y -4 = 0

d1 = 2(-1) -10(-1) = 8

d2 = -1(-4) -(-1)(6) = 10

d3 = 6(10) -(-4)(2) = 68

Solutions are ...

  x = d2/d1 = 10/8 = 1.25

  y = d3/d1 = 68/8 = 8.5

The solution is (x, y) = (1.25, 8.5).

_____

<em>Additional comment</em>

I like a graphing calculator for a quick and easy solution. When the values are not integers, I like an algebraic solution to see what the exact values are.

__

The "cross multiplication method" is similar to Cramer's rule in that determinants of pairs of coefficients are computed. If you look up this method, videos will show you a variation that is slightly different. Here, we determined d1, d2, and d3 as the 2×2 determinant of the coefficients in adjacent columns of the array you get from the general form equations with the first column repeated:

  \begin{array}{cccc}2&-1&6&2\\10&-1&-4&10\end{array}

In each pair, the determinant is the difference between the product of numbers on the down-diagonal and the product of numbers on the up-diagonal.

The determinants relate to the x- and y-values by ...

  1/d1 = x/d2 = y/d3   ⇒   x = d2/d1, y = d3/d1

There is a Vedic solution method for linear equations that is similar to this, but starts from equations in standard form. As a consequence, the cross-differences are done in a different order.

__

Standard form: ax +by = c

General form: ax +by +c = 0

3 0
2 years ago
What is the length of side x? If necessary, round your answer to two decimal places.
Gnoma [55]
I hope this helps you

8 0
2 years ago
Help me please thanks
erik [133]

Answer:

D

Step-by-step explanation:

given c = 8πab

Isolate a by dividing both sides by 8πb

\frac{c}{8b\pi } = a → D


4 0
3 years ago
Read 2 more answers
Look at pic DUE AT 4:00 HELPPP
liraira [26]

Answer:

The first is not equivalent, second is.

Step-by-step explanation:

2x-3.9x+7.5=5.9x+7.5

The first is not equivalent, second is.

7 0
2 years ago
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