All categories

3 years ago

Using the quadratic formula to solve x? + 20 = 2x, what are the values of x?

1 answer:

6 0

I am not sure if the “+” was supposed to go there or if that was just a typo, so I do apologize if this is wrong... but if it doesn’t belong in the equation at all, 20 = 2X is a fairly simply multiplication problem. You are to divide both sides by the 2 and you should get X = 10, because 2 goes into 20, 10 times; and the 2 goes into 2 only once, therefore the 2 now gets cancelled out.

Answer: 20 divided by 2 = 2x divided by 2 is now 10 = X.

Really hope this helps you, have a good day :)

You might be interested in

Hi! I'd appreciate if you could help me on this question.

s2008m [1.1K]

Answer:

Step-by-step explanation:

We need to find the multiples of 8

8,16,24,32,40,48

48 is between 45 and 50 so he must have bought 48

8 0

3 years ago

Read 2 more answers

1/3 + a =5/4 a=<br><br> what does a = i really need help this means a lot to my grade

Katyanochek1 [597]

Answer:

a = 11/12

Step-by-step explanation:

1/3 + a =5/4

Subtract 1/3 from each side

1/3-1/3 + a =5/4-1/3

a = 5/4 -1/3

Get a common denominator of 12

a = 15/12 - 4/12

a = 11/12

4 0

3 years ago

Read 2 more answers

A semicircle is attached to the side of a rectangle as shown.

laiz [17]

Answer:

$58.8\ mm^2$

Step-by-step explanation:

we know that

The area of the figure is equal to the area of rectangle plus the area of semicircle

step 1

Find the area of rectangle

The area of rectangle is equal to

$A=bh$

where

$b=9\ mm\\h=3\ mm$

substitute

$A=(9)(3)=27\ mm^2$

step 2

Find the area of semicircle

The area of semicircle is equal to

$A=\frac{1}{2}\pi r^{2}$

we have

$r=9/2=4.5\ mm$ ---> the radius is half the diameter

$\pi =3.14$

substitute

$A=\frac{1}{2}(3.14) (4.5)^{2}$

$A=31.8\ mm^2$

step 3

Find the area of the figure

$A=27+31.8=58.8\ mm^2$

4 0

3 years ago

Read 2 more answers

The Sunday newspaper costs $1.80 per issue delivered and Saturday and weekday papers cost 20 cents per issue delivered. How many

yaroslaw [1]

I think that it's 490 days approximately.

3 0

3 years ago

Read 2 more answers

-10 · (-12) = <br> (Is there some way you can explain how you got the answer.)

Dmitry_Shevchenko [17]

The answer is 120 what you do you take -10 and multiply it by -12. Why a positive 120 you may ask because when you multiply two numbers with the same sign the answer should be positive no matter what. Hope I helped!

4 0

3 years ago