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3 years ago

Simplest form of the expression -2x2(x – 5) + x(2x2 – 10x) + x is

1 answer:

3 0

You first simplify the expression using PEMDAS
-2x^3-10x^2+2x^3-10x^2+x
then combine like terms,
(-2x^3+2x^3), (-10x^2-10x^2), x
cancels out^
so the answer would be -20x^2+x

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Can someone please help me with the “Challenge” question??

IRINA_888 [86]

Answer:

12.5

Step-by-step explanation:

A 10x10 grid would have 100 units. If you divide it into 8 equal units you would do:

100 / 8

Which gets you, 12.5

4 0

3 years ago

Can someone please write the for mat on how to solve the problem so I can practice, please..thank you.....20.000 × 26%

LekaFEV [45]

Answer:

20(.26) = 5.2

First you take the first number, which is 20, and then multiply it by the percentage, which is .26. Using a calculator, we get 5.2. Hope this helps.

6 0

3 years ago

Find f(-3) for f(x) = 4(2)^x<br> A. 1/8<br> B. -32<br> C. 1/2<br> D. -24

Law Incorporation [45]

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Find f(-3) for f(x) = 4(2)^x

D.-24

((−3)(4))(2)

=(−12)(2)

=−24

8 0

2 years ago

How many 3/20 inch lengths are in 5 2/5 inches?

klasskru [66]

Answer:

0.81

Step-by-step explanation:

7 0

3 years ago

PLEASE HELP PLEASE PLEASE

NNADVOKAT [17]

Answer: The value of x =2 units.

Explanation:

Since we have given that

AD= CD

BE= EA

So, we get that D and E are the mid-points of AC and AB respectively.

So, by Mid- point theorem , which states that the line joining the two midpoints is parallel to third side and it is half in length of third side i.e.

$DE=\frac{1}{2}BC$

So, we put the value of DE and BC ,

$5x-3=\frac{1}{2}\times (x+12)\\\\2(5x-3)=x+12\\\\10x-6=x+12\\\\10x-x=12+6\\\\9x=18\\\\x=\frac{18}{9}=2$

Hence, the value of x =2 units.

4 0

3 years ago