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alexira [117]
2 years ago
11

Helppp!!!!! 2 questions answer both

Mathematics
2 answers:
Ann [662]2 years ago
7 0
I agree with what she saidddd ^
yKpoI14uk [10]2 years ago
3 0
1. The answer would be about 20.72, or 20.7142 if you don’t want the rounded version

2. The answer is -12.8
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(Picture) MULTIPLYING POLYNOMIALS AND SIMPLIFYING EXPRESSIONS PLEASE HELP!!!!
kvv77 [185]

Answer:

Answer: Third option is the right answer.

Step-by-step explanation:

First we the write the expression

(a+b)(a^{2}+b^{2}-ab)

Now teacher says that the product of these polynomials will result in the sum of  a^{3}+b^{3}

Now the teacher ask if we put the value of a = 2x and b = 1 then what will be the expression look like.

(2x+1)\left [ (2x)^{2}+(1^{2})-(2x)(1)\right ]

=(2x+1)(4x^{2}+1-2x)

So third option is looking like our expression.

3 0
3 years ago
Carl spent $200 in six days. He spent $60 on the first day. He spent the same amount of money during the next five days. a. Writ
qaws [65]

Answer:

200 divided by 60

Step-by-step explanation:

7 0
3 years ago
What is the equivalent of 243 to the power of (2/5)
nasty-shy [4]

<span>(243)^(2/5) = ?
---
The 5 in the denominator means "take the 5th root".
The 2 in the numerator means "square".

---


</span><span>Taking the 5th root first you get:
(243)^(2/5) = 3^2
Now squaring gives you
3^2 = 9

So the answer is 9.

Hope this helps :)
~Davinia.
</span>

6 0
3 years ago
Which number produces a rational number when multiplied by 0.5?
xxMikexx [17]

If the number begins by being rational, multiplying by 0.5 will not change whether or not it is rational. It will remain rational.


That would include any even number 12 * 0.5 = 6

12 started out as rational, so the answer is rational (6)


Any odd number is also rational

23 * 0.5 = 11.5

23 and 11.5 are both rational.


3.636363636 ... is rational so when multiplied by 0.5 the result will be rational.

1.818181818....


So if we start with something irrational like pi

then pi * 0.5 is not rational.

If you have choices, please list them.
4 0
3 years ago
Citing drastic differences between her school and the white school across the
ella [17]

Answer:

the pay one

Step-by-step explanation:

i thinks sorry if i get it wrong

4 0
3 years ago
Read 2 more answers
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