All categories

3 years ago

Which quadratic equation is equivalent to (x+2)2+5(x+2)-6=0

Mathematics

1 answer:

professor190 [17]3 years ago

6 0

$(x+2)^2+5(x+2)-6=0\\\\x^2+2\cdot x\cdot2+2^2+5\cdot x+5\cdot2-6=0\\\\x^2+4x+4+5x+4-6=0\\\\x^2+9x+2=0$

You might be interested in

An arch in the firm of a semicircle was over a 40 inch wide doorway. Find the length of the arch.

Hoochie [10]

Answer:13

Step-by-step explanation:

5 0

3 years ago

17. Consider the function f(x, y, z) = xy ln(yz).

Lelu [443]

We can expand

$f(x,y,z) = xy\ln(yz) = xy \ln(y) + xy\ln(z)$

Then using the product and chain rules,

$\dfrac{\partial f}{\partial x} = y\ln(y) + y\ln(z) + \boxed{y\ln(yz)}$

$\dfrac{\partial f}{\partial y} = x\ln(y) + \dfrac{xy}y + x\ln(z) = \boxed{x\ln(yz) + x}$

$\dfrac{\partial f}{\partial z} = \boxed{\dfrac{xy}z}$

3 0

2 years ago

The letters of the alphabet are written on cars and placed in a brown paper bag. What is the probability of drawing a vowel, rep

Oksanka [162]

Answer:

25 / 676

Step-by-step explanation:

There are 5 vowels in the alphabets, and there are 26 alphabets in total as a whole.

The probability of drawing a vowel kb first trial is going to be

5 / 26, total number of vowels and total number of alphabets as a whole.

Again, we're told to replace the picked vowel, and pick another vowel, so that will once again be

5 / 26.

To get the final answer, we multiply both answers by each other

5 / 26 * 5 / 26 = 25 / 676.

Therefore, the probability has been found to be 25 / 676

6 0

3 years ago

Solve for x: 20 - 6x = -16

ira [324]

The Answer is x = 6
Tell me if I’m right ?

7 0

3 years ago

What is the distance between points S and U if S is 2, 1 and U is 6, 8

balandron [24]

The distance formula is:

D = sqrt((x2-x1)^2 + (y2-y1)^2)

D= sqrt ((6-2)^2 + (8-1)^2)

D = sqrt(4^2 + 7^2)

D = sqrt( 16 + 49)

D = sqrt(65)

D = 8.06

Rounded to the beat tenth = 8.1 units.

The answer is C. 8.1 units

4 0

3 years ago

Read 2 more answers