All categories

3 years ago

Select all of the following that represent quadratic expressions:

Mathematics

1 answer:

suter [353]3 years ago

7 0

C. (x + 2)(x + 1)

it can be turned into an equation :)

You might be interested in

Which equation has the components of 0 = x2 – 9x – 20 inserted into the quadratic formula correctly? x = StartFraction negative

AnnZ [28]

Answer:

$x=\frac{9+/-\sqrt{(-9)^2-4\,(1)\,(-20)} }{2\,(1)}$

Step-by-step explanation:

Recall that the quadratic formula gives you the pattern to follow in order to find the solutions to a quadratic equation of the form: $ax^2+bx+c=0$

It tells us that we need to use the parameters $a,\, b,$ and $c$ in the following formula in order to get the answers for the x-values that solve it:

$x=\frac{-b+/-\sqrt{b^2-4\,a\,c} }{2\,a}$

so, in our case, $a=1$ , $b=-9$ , and $c=-20$

then, replacing these values in the formula, we obtain:

$x=\frac{-b+/-\sqrt{b^2-4\,a\,c} }{2\,a}\\x=\frac{-(-9)+/-\sqrt{(-9)^2-4\,(1)\,(-20)} }{2\,(1)}\\x=\frac{9+/-\sqrt{(-9)^2-4\,(1)\,(-20)} }{2\,(1)}$

Which looks like the third expression you are listing (although it is a little hard to read)

7 0

3 years ago

Read 2 more answers

2x+2(3x-2)+4-2(3x+8)

vladimir2022 [97]

Answer:

-14

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

3/4 + 1/2 times 2 please help thanks

Harlamova29_29 [7]

Answer:

7/4

Step-by-step explanation:

1/2 x 2 = 1

3/4 + 1 = 7/4 or 1 3/4

3 0

3 years ago

In the number 4,118, how does the value represented by the 1 in the hundreds place compare with the value represented by the 1 i

hichkok12 [17]

Answer:

its 10 times

Step-by-step explanation:

its because the value of 1 in the ten place and multiply by 10 to get the 1 in the hundred place or the 1 in the hundred place divide by 10 to get 1 in the tens place

7 0

3 years ago

The hour hand of a clock moves -30° every hour. How many degrees does it move in 2 1 /5hours?

Nitella [24]

Answer:

-75°

Step-by-step explanation:

-30°+-30°+-15°

Im one brainliest away from a rank up!

3 0

2 years ago