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nlexa [21]
3 years ago
5

What is the solution to the system of equations. 2x+4y=12. Y=1/4x-3

Mathematics
1 answer:
larisa86 [58]3 years ago
5 0
2/7 not sure but that's what i got 
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frutty [35]
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The horses eat 12 bales
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2 years ago
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30 POINTS NEED HELP
KatRina [158]

a. The expression y=5x represent the number of small marbles she has.

b. The expression z=3x+2 represents the number of large marbles she has.

c. Amy has 310 small marbles, 62 medium marbles and  188 large marbles.

Step-by-step explanation:

a. Let x represent the number of medium marbles Amy has. Write an algebraic expression to represent the number of small marbles she has.

Medium marbles = x

Let,

Small marbles = y

According to given statement;

She has five times as many small marbles as medium marbles.

y = 5x        Eqn 1

The expression y=5x represent the number of small marbles she has.

b. Write an algebraic expression to represent the number of large marbles she has.

Let,

Large marbles = z

The number of large marbles is two more than three times the number of medium marbles.

z = 3x+2        Eqn 2

The expression z=3x+2 represents the number of large marbles she has.

c. If Amy has a total of 560 marbles, how many of each size does she have?

x+y+z= 560     Eqn 3

Putting value of y and z from Eqn 1 and 2 in Eqn 3

x+(5x)+(3x+2)=560\\x+5x+3x+2=560\\9x=560-2\\9x=558

Dividing both sides by 9

\frac{9x}{9}=\frac{558}{9}\\x=62

Putting x=62 in Eqn 1

y=5(62)\\y=310

Putting x=62 in Eqn 2

z=3(62)+2\\z=186+2\\z=188

Amy has 310 small marbles, 62 medium marbles and  188 large marbles.

Keywords: linear equation, substitution method

Learn more about substitution method at:

  • brainly.com/question/11416224
  • brainly.com/question/11638377

#LearnwithBrainly

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3 years ago
Yikes mctugg bought 1/2pound of potato salad . He ate 2/3of it for lunch .How much potato salad was left for an afternoon snack
Anna007 [38]

\frac{1}{2}  -  \frac{2}{3}( \frac{1}{2}) =  \frac{1}{2} -  \frac{2}{6} =  \frac{3}{6} -  \frac{2}{6} =  \frac{1}{6} pound
5 0
3 years ago
Reduce this algebraic fraction. y^3 -3y^2+y-3 / y^2-9
blondinia [14]

Answer:

y³ - 3y² + 1/y+3

Step-by-step explanation:

y² - 9 = (y - 3) ( y + 3)

y-3/(y-3)(y+3) = 1/y+3

6 0
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PLEASE HELP!!
professor190 [17]

Answer:

The answer is 33.2*F (72.3*F - 39.1*F because the temp. is *dropping* 39.1*F)

Step-by-step explanation:

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