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Aleks [24]
3 years ago
11

Convert the following equation into standard form. 2y = 4x – 9 - [?]x+[ ]y = -9

Mathematics
1 answer:
Tresset [83]3 years ago
4 0

Answer: 2x - 2y = 9

here you go

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Maria and farida has 250 beads altogether. After Maria used 18 beads to make a bracket and farida gave away 2/5 of her beads, th
Elenna [48]

Answer:

Maria had 105 beads at first.

Step-by-step explanation:

Let number of beads Maria have be x.

Let number of beads Farida have be y.

Given:

Maria and Farida has 250 beads altogether.

Hence equation is represented as;

x+y =250 \ \ \ \ equation \ 1

Also Given:

Maria used 18 beads to make a bracket.

hence bead left with maria = x-18

farida gave away 2/5 of her beads.

Hence beads left with Farida = y - \frac{2}{5}y= \frac{5y}{5}-\frac{2y}{5}=\frac{5y-2y}{5}=\frac{3y}{5}

Also they have the same number of beads left.

bead left with maria = beads left with Farida

x-18= \frac{3y}{5}\\5(x-18)=3y\\5x-90=3y\\5x-3y =90 \ \ \ \ equation \ 2

Now Multiplying equation 1 with 3 we get;

3(x+y)=3\times250 = 3x+3y = 750 \ \ \ \ equation \ 3

Now adding equation 2 by equation 3 we get;

(5x-3y)+(3x+3y) = 750+90\\5x-3y+3x+3y = 840\\8x=840\\x=\frac{840}{8}=105

we know the value of x = 105

hence substituting value of x in equation 1 we get;

105+y=250\\y=250-105 =145

Maria had 105 beads and Farida had 145 beads at first.

Final Answer: Maria had 105 beads at first.

7 0
3 years ago
How do you solve 2x + 4 > 16
myrzilka [38]
X > 6

2x + 4 > 16
2x > 12
x > 6


Mark brainliest please
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2^4

Step-by-step explanation:

there are four 2's being multiplied to each other.

You can combine them and say 2 x 2 x 2 x 2 = 2 ^4

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4 years ago
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Which of the statements best describe the origin on the coordinate system?
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The point, (0.0). is the ordered pair at the origin.

Step-by-step explanation:

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Answer:

I think the answer is B. Hope it helps!

Step-by-step explanation:

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3 years ago
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