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liq [111]
2 years ago
6

I asked before and didn’t get an answer I really don’t understand this thanks.

Mathematics
2 answers:
balu736 [363]2 years ago
7 0

D. 4x^4 + 12x^3 + 28x^2 is a polynomial


Multiply 4x^2 with x^2 + 3x + 7


4x^2(x^2) = 4x^4

4x^2(3x) = 12x^3

4x^2(7) = 28x^2


hope this helps

dmitriy555 [2]2 years ago
3 0
The answer is D, because that is what you should get when you multiply it out.

4x^2 times x^2 = 4x^4 because...

1) multiply the 4 and the one in front of the x on the second term = 4 then

2) multiply x^2 times x^2 to get x^4, not x^3, so you can immediately eliminate A and B to save time.

Now let's deal with the second part..."may or may not be" part

A polynomial is an expression with more than two algebraic terms

terms are like...
2x + 3y ---there's two terms there, eventhough the 2 and x are multiplied, it doesn't count (same with the 3 and y)
since it only have two terms, not more than two terms, it is called a binomial, not polynomial. I think that's what they mean by that

one term with a variable (y,x,and so on) is called a monomial

one term with no var is called a constant

there's many more but hope this gave you some help
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If f(x)=3-|7+2x|, evaluate if f(-5)
rjkz [21]

Answer:

0

Step-by-step explanation:

the || makes whatever number is inside it abslute so -3 becomes 3 instead

8 0
3 years ago
Read 2 more answers
Which ordered pair (x, y) is a solution to given system of linear equations?
patriot [66]

Answer:

(\frac{1}{6}, \frac{1}{2}) or (0.167,0.5)

Step-by-step explanation:

Given

3x + y =1

15x + y = 3

Required

Determine the solution

We'll solve using elimination method.

Subtract the first equation from the second:

15x + y = 3

3x + y =1

--------

15x - 3x + y - y = 3 - 1

15x - 3x + y - y = 3 - 1

15x - 3x  = 3 - 1

12x  = 2

Make x the subject:

x = \frac{2}{12}

x = \frac{1}{6}

x =0.167

Substitute \frac{1}{6} for x in the first equation

3x + y =1

3(\frac{1}{6}) + y = 1

\frac{1}{2} + y = 1

Make y the subject

y = 1 -\frac{1}{2}

y = \frac{2-1}{2}

y = \frac{1}{2}

y = 0.5

Hence, the solution is:

(\frac{1}{6}, \frac{1}{2}) or (0.167,0.5)

8 0
2 years ago
Approximately how many times greater is 1.2×103 than 4×10−1 ?
Galina-37 [17]
3000 Quick answer
Let your calculator do the work. Be careful how you enter this in. (Are you supposed to estimate it? We'll get around to that.) Write it like this.

1.2 * 10^3 divided by 4 * 10^-1 Your calculator will do this nicely. The trick is the - 1. Put it in the calculator like this.
1.2 
*
10
^
3
=
÷
4
*
10
^
(-1) 
= The calculator should read 3000
That's one way to do it. Another way is just to do it all by hand. The numbers are easy enough
1.2 * 10^3 means shift the decimal 3 places right. 1 200 which is 1200
4 * 10^-1 can be handled 2 ways 10 to the minus 1 in the denominator becomes 10^1 in the numerator. Notice the sign change on the 10 when you shift if :it becomes plus! That's why you did it.

1200 * 10^1 
12000

Now you are still left with 4 in the denominator.
12000/4 = 3000. 

The first method always works. The second one gives you a better understanding of how powers work. There are other ways of doing this, but these are the two best, I think.
4 0
3 years ago
1821.5 / 0.7=<br> ill give brainliest
bulgar [2K]

Answer:

2602.142857 (you can simplify if you want)

Step-by-step explanation:

just act like the fraction sign is a division sign and then divide the two number.

Hope this helped!

3 0
3 years ago
What is the area of this figure?
Leni [432]

Answer:

315

Step-by-step explanation:

5 0
2 years ago
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