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Mamont248 [21]
3 years ago
15

Solve the following system of equations. 3x + 2y - 5 = 0 x = y + 10

Mathematics
2 answers:
Dominik [7]3 years ago
6 0
Y=-5 
x=5
there's the answer

Vikentia [17]3 years ago
4 0
The answer for the first one is x=-2/3y+5/3

 And the last one is on a graph the points are -10, 10
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5x^2-2x=2<br>help plsmmm​
Yuki888 [10]

Answer:

Presumably you're solving for x here?  Without further information we'll assume that.

With that in mind, x is approximately equal to 0.86 and -0.46

Step-by-step explanation:

Let's start by putting it in the usual ax² + bx + c format.

5x^2- 2x = 2\\5x^2 - 2x - 2 = 0\\

let's solve it.  First we'll multiply both sides by five, making the first term a perfect square:

25x^2 - 10x - 10 = 0\\

Now we'll add 11 to both sides:

25x^2 - 10x + 1 = 11\\

Which makes the left side a perfect square:

(5x - 1)^2 = 11

And now we can solve for x:

(5x - 1)^2 = 11\\\\5x - 1 =  \sqrt{11} \\\\5x = 1 + \sqrt{11}\\\\x = \frac{1 + \sqrt{11}}{5}

Note that there's no apparent way of drawing the ± symbol when editing equations, so take that + sign as actually being ±.

That gives us two answers:

x = \frac{1 + \sqrt{11}}{5}\\\\x \approx \frac{1 + 3.32}5\\\\x \approx \frac{4.32}5\\\\x \approx 0.86             x = \frac{1 - \sqrt{11}}{5}\\\\x \approx \frac{1 - 3.32}5\\\\x \approx \frac{-2.32}5\\\\x \approx -0.46

7 0
3 years ago
Find the circumference of a circle<br> with a diameter of 45.
sleet_krkn [62]

Answer:

141.4 centimeters

Step-by-step explanation:

circumference = diameter * pi c = d * pi c = 45 * 3.1416 c = 141.4 (rounded)

7 0
3 years ago
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Answer:

Step-by-step explanation:

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A recipe calls for 2.5 cups of sugar . you have already put in 0.75 cups. how many more cups of sugar does the recipe call for
Tomtit [17]
2.5 cups minus .75 cups equals 1.75 cups.
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3 years ago
How do I reduce 3/2 times 1/3
MissTica
The 3's cancel giving you the answer of 1/2
7 0
3 years ago
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