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zloy xaker [14]
3 years ago
6

need help.  solve using quadratic formula, aproximate solution to nearest tenth.                                    5x²6+5x answ

er is _______
Mathematics
1 answer:
Alona [7]3 years ago
4 0
<u>5x² + 5x + nothing</u>
Ax² + Bx + C

A = 5
B = 5
C = 0

Quadratic formula:

x = (1/2A) times [ -B plus and minus √(B²-4AC) ]

B² - 4AC = 25 - 4(5)(0) = 25
 
-B plus and minus √25 = -5 plus and minus 5 = -10 and zero.

(1/2A) times (-10 and zero) = (1/10) times (-10 and zero) = -1 and zero

x = 1
and
x = 0
===============================
What is that '6' doing in there ?
Where does it belong ?
Did you copy the problem correctly ?

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3.If the ratio of lynx to mountain lions and wolverines in the park is 2:3:1.So for every 2 lynx, there are 3 mountain lions and
Zolol [24]
A.  The ratio of lynx to mountain lions to wolverines is 2:3:1.

Thus, there are 2 lynx in the ratio.  If there were 6 lynx, we would have to multiply all of the numbers in the ratio by 3 (because 6/2 = 3) to keep the ratio in the same proportion.  

Therefore, because there is 1 wolverine in the ratio, and 1 * 3 = 3, if there were 6 lynx, there would be 3 wolverines.

b. We can use the same ideas that we had in part a to help us in part b.
There are 3 mountain lions in the ratio, but there are 15 mountain lions in the problem.  Thus, the multiplier is 5, because 15/3=5.

Therefore, because there are 2 lynx in the ratio, and 2*5 = 10, if there were 15 mountain lions, there would be 10 lynx.

c.  There is one wolverine in the ratio, but there are 10 wolverines in the problem.  Thus, the multiplier is 10, because 10/1 = 10

Therefore, because there are 3 mountain lions in the ratio, and 3 * 10 = 30, if there were 10 wolverines in the park, then there would be 30 mountain lions.

d.  The total number of lynx, mountain lions, and wolverines is 30.
To find out how many of each animal there should be, we must make an equation using the ratio and the variable x. 

2x + 3x + 1x = 30

This equation means that the total number of animals together is 30, which is true.  Now let's simplify by combining like terms.

6x = 30

Finally, we can simplify by dividing both sides by the coefficient of x, or 6.

x = 5

Thus, going back to our original equation, we know that the amount of lynx is 2x, mountain lions is 3x, and wolverines is 1x.

Lynx = 2x = 2(5) = 10 lynx
Mountain Lion = 3x = 3(5) = 15 mountain lions
Wolverines = 1x = 1(5) = 5 wolverines

Hope this helps! :)

7 0
4 years ago
What equation is represented by the equation on the graph ?
solmaris [256]

Answer: The correct option is D.

Explanation:

From the graph we noticed that the x intercept of the line is (2,0) and the y-intercept is (0,2).

If the line passing through two points then the equation of line is,

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

Since the ien passing through (2,0) and (0,2).

y-0=\frac{2-0}{0-2}(x-2)

y=-1(x-2)

y=-x+2

This equation is represented by option D, therefore the option D is correct.

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A tutoring company has offices where students physically attend a test prep course. The company recently created an online test
alexandr402 [8]

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7 0
3 years ago
Does anyone know this and can help please
adelina 88 [10]

Answer:

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Step-by-step explanation:

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5 0
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