3 years ago

Hi, please help me with this thank you!

Mathematics

1 answer:

sdas [7]3 years ago

5 0

5 hope this helps sorry if wrong

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Given 2X + 4Y = 13 and 3X + Y = 2, what is the value of X?

Goryan [66]

Answer:

x = -1/2

Step-by-step explanation:

2x + 4y = 13

3x + y = 2 (you can multiply this equation by -4 in order to eliminate the y-term)

-4(3x + y = 2) = -12x - 4y = -8

+ <u>2x + 4y = 13</u>

-10x = 5

x = -5/10 or -1/2

x(-1/2) + 4y = 13

-1 + 4y = 13

4y = 14

y = 14/4 or 7/2 or 3 1/2

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What's the difference between j(x) and just X in j(x)=-2x+4 ??

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J(x) is equivalent to Y. For example if you were to have a equation in slope intercept form it would be y=mx+b which can be written in the same way as your problem j(x)=mx+b. To sum it up j(x) is just another way to say y=

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Karen had to spend $24 on seven packs of markers for a workshop. After buying them, she had $10. How much did each pack of marke

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24-10=14/7=2

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3 years ago

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As an estimation we are told 5 miles is 8 kilometres. Convert 65 miles to km

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Step-by-step explanation:

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Graph the function.

disa [49]

Answer:

Line passing through $(0,2),(1,-21)$ .

Step-by-step explanation:

$y=-23x+2\\at\ y\ axis\ x=0\\y=-23\times0+2\\y=2$

hence this line passes through $(0,2)$ .

When $x=1$

$y=-23\times1+2\\y=-21$

Hence this line passes through $(1,-21)$ .

Graph is attached.

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