3 years ago

How do you identify quadratic equations?

1 answer:

8 0

Often the easiest method of solving a quadratic equation is by factoring. Factoring means finding expressions that can be multiplied together to give the expression on one side of the equation. ... The equation x2+x−6=0 x 2 + x − 6 = 0 is in standard form.

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If f(x) =2x²-x, find f(-4)-f(9)

sergeinik [125]

F(-4) = 36
f(9) = 153

3 0

3 years ago

What number is 36% of 85

Wittaler [7]

I think it would be 30.6

4 0

3 years ago

Read 2 more answers

Kevin is 3 times as old as Daniel. 4 years ago, Kevin was 5 times as old as Daniel.

DochEvi [55]

X is Kevin; Y is Dan

X = 3Y

X - 4 = 5(Y - 4)

3Y - 4 = 5(Y - 4)
3Y - 4 = 5Y - 20
   + 4 +4
4 cancels each other out.
3Y = 5Y - 16
   - 5 -5
5 cancels each other out.
-2Y = -16
/2 /2
   Y = 8

X = 3Y;
X = 3 x 8;

Thus,
X = 24;
Kevin(x) is 24

8 0

4 years ago

Divide these polynomials.

Kryger [21]

( $6x^{2} + 14 x^{2} + 6x - 2$ ) ÷ ( $2x + 2$ )
= $3x^{2} + 4x - 1$

3 0

3 years ago

Joan has 1/2 yard of felt. She will use 1/3 of it to make place cards. How much felt will she will use for place cards?

-Dominant- [34]

ANSWER

$\frac{1}{6} \: yards$

EXPLANATION

It was given that, Joan has

$\frac{1}{2} \: yard \: of \: felt$

and she will use

$\frac{1}{3}$
of it to make place cards.

We want to find how felt she will use for place cards.

We just have to find,

$= \frac{1}{3} \: of \: \frac{1}{2}$

$= \frac{1}{3} \times \frac{1}{2}$

$= \frac{1}{6}$

Therefore Joan will use

$\frac{1}{6}$

yards of felt for the place cards.

7 0

3 years ago