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Bad White [126]
3 years ago
13

If you know the concept of proportionality M for two proportional quantities X and Y what equation can you write to describe the

relationship?
Mathematics
1 answer:
liubo4ka [24]3 years ago
6 0

Answer:

Y = MX

Step-by-step explanation:

If two quantities X and Y maintain a proportional relationship with each other, then we can write this as Y ∝ X.

Now, converting this relation into the equation we write Y = MX ........ (1), where M is a constant.

Now, from the above equation, we can say that the rate of change of Y with respect to the unit change of X is always constant.

Graphically. this equation represents the graph of a straight line with a constant slope and passing through the origin. (Answer)

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kompoz [17]

Answer:210. 2/3

you would have to add all the numbers to get the answer even the fractions

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9 boys and 5 girls took part in the music competition. What is the ratio of the number of girls to the number of boys who partic
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5:9

Step-by-step explanation:

the ratio of the number of girls to the number of boys who attended the competition is 5:9

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4 years ago
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2x - 2y = 12<br> 29. - 3y = -2
Sophie [7]

Olá boa tarde meu nome é "Guilherme" sou de Brasil e vou resolver a sua pergunta

a ) 2x - 2y = 12

{ a 2

{ b 2

{ c 12

<u>/</u><u>\</u> = b elevado 2 -4 a.c

<u>/</u><u>\</u> = (2) elevado 2 -4 . 24

<u>/</u><u>\</u> = 4 -4 . 24

<u>/</u><u>\</u> = 24

X = <u>-</u><u>b</u><u>+</u><u>/</u><u> </u><u>/</u><u>\</u><u> </u> = <u> </u><u>2</u><u> </u><u>-</u><u> </u><u>5</u>

2a 2

<u> </u><u>5</u>

2

<u> </u><u>5</u>

2

S = {20,10}

b) 29. - 3y = -2

{ a = 29

{ b = -3

{ c = -2

<u>/</u><u>\</u> = b elevado 2 -4 a.c

<u>/</u><u>\</u> = (-6) -4 . 58

<u>/</u><u>\</u> = -10 . 58

<u>/</u><u>\</u> = -48

X = <u> </u><u>b</u><u> </u><u>+</u><u> </u><u>/</u><u> </u><u>/</u><u>\</u><u> </u> = <u> </u><u>-</u><u>3</u><u> </u><u>+</u><u> </u><u>24</u><u> </u>

<u> </u><u>5</u>

3

<u> </u><u>5</u>

3

S = { 15,15}

Espero ter ajudado

2a 2

3 0
3 years ago
Store 1 earned 10% of the money invested I it while store 2 lost 8% of the amount invested in it. The net total gain was $1,300.
Alex17521 [72]

Answer:

Store 1= $150

Store 2= $250

Step-by-step explanation:

Let the amount invested by store 1 be x while store 2 be y hence

10x-8y=1300 Eqn 1

Make x the subject of the formula for the first equation

10x=1300+8y divide both sides by 10

X=130+0.8y

6x+5y=2250 Eqn 2

Substituting where there’s x with 130+0.8y in equation 2 we obtain

6(130+0.8y)+5y=2250

780+4.8y+5y=2250

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Y=1470/9.8=150

X=130+0.8y= 130+0.8(150)=250

4 0
3 years ago
Six machines, each working at the same constant rate, together can complete a certain job in 12 days. How many additional machin
Schach [20]

Answer:

3 machine

Step-by-step explanation:

It is given that 6 machine each working at the same rate can complete the work in 12 days

We the has to complete in 8 days

Let we need x extra machine to complete the work in 8 days

So total number of machines =x+6

Now according to man work day equation M_1D_1=M_2D_2

6\times 12=(x+6)\times 8

8x+48=72

8x=24

x=3 machine

7 0
3 years ago
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