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Mandarinka [93]
3 years ago
14

Whats 2+2 :O this is for y'all to get points your welcome <3

Mathematics
1 answer:
Harman [31]3 years ago
7 0

Answer:

4

Step-by-step explanation:

Thank you so much lol :3

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Follow the process of completing the square to solve 2x2 + 8x - 12 = 0.
Rom4ik [11]
Please:  Use "^" to denote exponentiation:  <span>2x^2 + 8x - 12 = 0

Reduce this by div. every term by 2:             </span><span>x^2 + 4x - 6 = 0

Here a=1, b=4 and c = -6.  Square half of b, obtaining (4/2)^2 = 4, and add, and then subtract, this 4 to x^2 + 4x - 6:

</span> x^2 + 4x +4  - 4 - 6 = 0.  Rewrite the square as (x+2)^2, obtaining new equation

(x+2)^2 = 10.  Take the sqrt of both sides:   x+2 = plus or minus sqrt(10).

Finally, solve for x:  x = -2 plus or minus sqrt(10).



8 0
3 years ago
Given three collinear points, find the missing x or y value to the nearest hundredth. (x, 0.8), (15, -0.4), (-4, 2.9)
grin007 [14]

Answer:

kainis nman pareho tau walang sumagot sa tanong nating dalwa

7 0
3 years ago
Which ordered pair is a solution of y = x + 4?
TEA [102]

Answer:

Step-by-step explanation:

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D. (9,13)​ because when x=9   so y=9+4 = 13.....(right)

5 0
3 years ago
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Which statement is true​
Reil [10]

Answer:

c

Step-by-step explanation:

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6 0
3 years ago
1. tan a = cot(a + 10°)
Temka [501]

Answer:

a=40+90n

Step-by-step explanation:

Use a cofunction identity on the right hand side or left hand side...

So \tan(a)=\cot(90-a).

We have the equation:

\tan(a)=\cot(a+10)

Make the above replacement:

\cot(90-a)=\cot(a+10)

Since cotangent has period 180 degrees, we can also write this as:

\cot(90-a+180n)=\cot(a+10)

So solving the following will give us a set of solutions for a:

90-a+180n=a+10

Add a on both sides:

90+180n=2a+10

Subtract 10 on both sides:

80+180n=2a

Divide both sides by 2:

40+90n=a

Symmetric property:

a=40+90n

7 0
3 years ago
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