Urgent 4.58 + y = 2.5 what does y equal

2 answers:

8 0

<span>Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-4.58' to each side of the equation. 4.58 + -4.58 + y = 2.5 + -4.58 Combine like terms: 4.58 + -4.58 = 0.00 0.00 + y = 2.5 + -4.58 y = 2.5 + -4.58
Combine like terms: 2.5 + -4.58 = -2.08 y = -2.08
Simplifying y = -2.08</span>

Ne4ueva [31]3 years ago

5 0

Y is -2.08

Hope that helps!!!

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Let us have four distinct collinear points $a,$ $b,$ $c,$ and $d$ on the cartesian plane. the point $c$ is such that $\dfrac{ab}

Deffense [45]

Start with a line segment connecting two points, A and B. $\dfrac{DA}{BA}=3$ means DA is 3 times longer than BA. Clearly, D cannot fall between A and B because that would mean DA is shorter than BA. So there are two possible locations where D can be placed on the line relative to A and B.

But with $\dfrac{DB}{BA}=2$ , or the fact that DB is 2 times longer than BA, we can rule out one of these positions; referring to the attachment, if we place D to the left of A, then DB would be 4 times longer than BA.

Finally, $\dfrac{AB}{CB}=\dfrac12$ , so that CB is 2 times longer than AB. Again we have two possible locations for point C (it cannot fall between A and B), but one of them forces C to occupy the same point as D. However, A, B, C, D are distinct, so C must fall to the left of A.

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$4d=4\sqrt2\implies d=\sqrt2$

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and so the equation of the line through these points is

$y-4=-(x-0)\implies x+y=4$

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All this to say that A is the point (1, 3), so

$2x+y=2+3=5$

5 0

3 years ago

8x+3y= 28 and 7x-3y=2<br>solve for x and y simontaniasly using elimination

EleoNora [17]

Answer:

x=2, y=4

Step-by-step explanation:

When using elimination, the objective is to elimate one variable. In this case, we see that "y" can easily be eliminated by adding the two equations together since you will get 3y + (-3y) which will eliminate y because the value would become 0, letting us solve for x.

$\left \{ {{8x+3y=28} \atop {7x-3y=2}} \right. +\\$