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Ostrovityanka [42]
3 years ago
9

If 9999 = 4, 8888 = 8, 1816 = 6, 1212 = 0, then 1919 =?

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
4 0

Answer:

1919=0+1+0+1=2

Step-by-step explanation:

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Solve the equation <img src="https://tex.z-dn.net/?f=8x%5E2%3D-36" id="TexFormula1" title="8x^2=-36" alt="8x^2=-36" align="absmi
chubhunter [2.5K]

Answer: 4(2x²+9) or i\frac{3\sqrt{2} }{2}

Step-by-step explanation:

To solve the equation by factoring, we want to set the equation to zero. In order to have the equation equal to zero, we want to add both sides by 36.

8x²=-36            [add both sides by 36]

8x²+36=0

When it comes to factoring, we want to pull out numbers or variables that are common in each term.

8x²+36=0         [take out a 4 in each term]

4(2x²+9)=0

It may seem that 2x²+9 can be factored further, it actually can't. This tells us that the factored form of the equation is 4(2x²+9)=0.

To solve the equation, we want to find the value of x. We already know the graph does not cross the x-axis because the y-intercept or vertex is (0,9).

4(2x²+9)=0       [divide both sides by 4]

2x²+9=0            [subtract both sides by 9]

2x²=-9               [divide both sides by 2]

x²=-9/2              [square root both sides]

x=\sqrt{-\frac{9}{2} } or x=i\frac{3\sqrt{2} }{2}

6 0
3 years ago
Read 2 more answers
Plz I need help I really need help
Fynjy0 [20]

Answer:

-1 1/2

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
8. What expression is equivalent to 3y – 21?
disa [49]

3(y-7)

use distributive property

3 0
2 years ago
0.2(x + 15) = 0.5(3x - 7)
Dafna1 [17]
Are you asking if this is greater than, less than, or equal to?
8 0
3 years ago
Simplify
Blababa [14]
Equation describes a sloping line. For any
equation ax+by+c = 0, slope is .<span>X intercept is found by setting y to 0: ax+by=c becomes ax=c. that means that x = c/a. 30/5 = 6.Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is 30/-3 = -10.Slope is -5/-3 = 1.66666666666667.<span> Equation in slope-intercept form: y=1.66666666666667*x+-10.</span></span>
6 0
3 years ago
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