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2 years ago

There is a pair of x and y values that make each equation true in this system of equations

Mathematics

1 answer:

MAXImum [283]2 years ago

5 0

Given Equations

5x+3y=8--(1)
4x+7y=34--(2)

Let it has solution (x,y)

Add both

$\\ \sf\longmapsto 5x+4x+3y+7y=8+34$

$\\ \sf\longmapsto 9x+10y=42$

It will also have same solution (x,y)

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If y varies directly with X and Y equals 21 when X equals 3 find Y if x =5

Veronika [31]

Answer:

Step-by-step explanation:

y = k*x

21 = k*3

k = 7

x=5 .. y = 7 * 5 = 35

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3 years ago

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tamaranim1 [39]

You add the second equation to the first which eliminates x and leaves you with 2y=18 so you divide 18 by 2 which is 9 so y=9 now you fill in one question for y so do x+4(9)=9 you get x+36=9 now subtract 36 from 9 and you get -27 so x=-27 and y=9

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3 years ago

The graph of the equation LaTeX: x^2+y^2-20x+14y+28=0

belka [17]

Answer:

radius = 11

Step-by-step explanation:

The equation of a circle in general form is

x² + y² + 2gx + 2fy + c = 0

with radius = $\sqrt{g^2+f^2-c}$

x² + y² - 20x + 14y + 28 = 0 ← is in general form

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3 years ago

The ratio of teachers to male students to female students in a school is 3:17:18 if the total number of students in the school i

Artist 52 [7]

Answer: 54

Step-by-step explanation:

First we add 17 plus 18 to dins total number of students I got 35

Then we make ratio

3/35

So we know we have total number of 630 kids then we make a ratio with no teacher so x

X/630

Lin both together then done ☑️

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2 years ago

Please help i need ASAP

Maksim231197 [3]

Answer:

6 and 6

Step-by-step explanation:

In equilateral triangles, all sides are congruent so that means that BC and CA are both 6.

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3 years ago

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