Where does the graph of f(x)=2√-x+2 start?

Mathematics

1 answer:

BartSMP [9]2 years ago

7 0

If Im doing my math right I think it’s B. (2,0)

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Evaluate 3x^2 - x for x = -2

Butoxors [25]

Answer:

$3x^2 - x$

$3 \times - 2 \times - 2 - 2$

$(3 \times - 2 \times - 2) - ( - 2)$

$12 + 2 = 14$

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2 years ago

If 18 , x , y , -3 are in A.P then find x + y.

AleksandrR [38]

Answer:

Step-by-step explanation:

If this is an arithmetic progression, then there is a common difference.

-3-18 = -21

-21/3 = -7

18 - 7 = x

x = 11

11 - 7 = y

y = 4

4 - 7 = -3

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2 years ago

What is X and A??? The have to equal the same thing, but one is multiplying and one is adding (picture)

Aleksandr-060686 [28]

X*a = 244 is equation (1)
x+a = 2 is equation (2)

Solve equation (2) for 'a' to get
x+a = 2
a = 2-x
Call this equation (3)

We will plug equation (3) into equation (1)
x*a = 244
x*(a) = 244
x*(2-x) = 244
Notice how the 'a' is replaced with an expression in terms of x

Let's solve for x
x*(2-x) = 244
2x-x^2 = 244
x^2-2x+244 = 0

If we use the discriminant formula, d = b^2 - 4ac, then we find that...
d = b^2 - 4ac
d = (-2)^2 - 4*1*244
d = -972
indicating that there are no real number solutions to the equation x^2-2x+244 = 0

So this means that 'x' and 'a' in those two original equations are non real numbers. If you haven't learned about complex numbers yet, then the answer is simply "no solution". At this point you would stop here.

If you have learned about complex numbers, then the solution set is approximately
{x = 1 + 15.588i, a = 1 - 15.588i}
which can be found through the quadratic formula

Note: it's possible that there's a typo somewhere in the problem that your teacher gave you.

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3 years ago

Simplify the expression 9(2x)

Paul [167]

Answer:

18x

Step-by-step explanation:

9 times 2x is 18x.

4 0

3 years ago

Read 2 more answers

Plot the vertex, focus, and directrix for the parabola represented by this equation. X=-1/12(y-2)^2+1