Factor the trinomial, or state that the trinomial is prime. y2-9y+14 Please help

Mathematics

1 answer:

trapecia [35]3 years ago

7 0

<h3>Answer: (y-2)(y-7)</h3>

=====================================================

Explanation:

To factor this, we need to find two numbers that

A) multiply to 14 (last term)
B) add to -9 (middle coefficient)

Through trial and error, you would find that the two numbers are -2 and -7

-2*(-7) = 14

-2 + (-7) = -9

So that's why the given trinomial factors to (y-2)(y-7)

You can use the FOIL rule to go from (y-2)(y-7) back to y^2-9y+14 again.

You might be interested in

Which of the following statements is true?

lozanna [386]

Answer:

Step-by-step explanation:

its d since the sides of a rectangle have to be parralell with eachother

7 0

3 years ago

Read 2 more answers

Now that you have converted a terminating decimal number into a fraction, try converting a repeating decimal number into a fract

Tom [10]

The first step is to assign the decimal number to a variable.

For the repeating fraction 0.111_1, this would look like
.. x = 0.111_1 . . . . . . . . . . where we use an underscore to identify the following digit(s) as repeating

The next step is to multiply that value by 10 to a power equal to the number of repeating digits. If there is one repeating digit (as here), then you want (10^1)x = 10x.
.. 10x = 1.111_1

The third step is to subtract x from this.
.. 10x -x = 1.111_1 -0.111_1 = 1
.. 9x = 1

And the final step is to divide by the coefficient of x.
.. x = 1/9 . . . . . . this is the value of the repeating decimal fraction.

_____
Here's one that's a little more complicated. It is done the same way.
.. x = 3.254545_45
.. 100x = 325.454545_45
.. 100x -x = 99x = 322.2
.. x = 322.2/99 = 3222/990 = 179/55

3 0

4 years ago

Can someone help me with the telephone part.. please

Mkey [24]

Will something idk sorry

8 0

4 years ago

Find the y intercept!

Irina-Kira [14]

Answer:

-23

Step-by-step explanation:

We note that as x increases by 36 from -72 to 36, y decreases by 24 from 25 to 1.

Increasing x from -36 by another 36 to zero will correspond to a decrease in y by another 24 from 1 to -23.

The y-intercept is -23.

_____

You could go to the trouble to use these observations to compute the slope as -24/36 = -2/3. Then you could pick one of the points and write the equation in point-slope form as ...

y = -2/3(x +36) +1 . . . point-slope form with m=-2/3, (h, k) = (-36, 1)

y = -2/3x -24 +1 . . . . . eliminate parentheses

y = -2/3x -23 . . . . . . . y-intercept is -23