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elena55 [62]
3 years ago
14

Factor 6x4 - 5x2 + 12x2 – 10 by grouping. What is the resulting expression? O (6x + 5)(x2 - 2) O (6x - 5)(x2 + 2) (6x2 + 5)(x -

2) (6x2 - 5)(x2 + 2) ​
Mathematics
2 answers:
Shtirlitz [24]3 years ago
8 0

Answer:

6x4 - 5x2 + 12x2 – 10 simplified is =6x^4+7x^2−10

6x4 - 5x2 + 12x2 – 10  factored is =(6x2−5)(x2+2)

Step-by-step explanation:

brainliest please?

Mila [183]3 years ago
6 0

Answer:

(6x^{2} - 5)(x^{2} +2)

Step-by-step explanation:

Always arrange in descending powers first.  In this case that is already done.

Try grouping the first two terms and the last two terms first

(6x^{4} - 5x^{2} ) + (12x^{2}  - 10)   Factor out the GCF of both groups

x^{2} (6x^{2}  - 5) + 2(6x^{2} - 5)\\     Note that 6x^{2} - 5 is a factor in each group. That's    

                                           good

Now treat 6x^{2} - 5 as a GCF and you get

(6x^{2} - 5)(x^{2} +2)

Since  6x^{2} - 5  and  x^{2} +2  are both prime, we are finished.  

You can check to see if you are correct by FOILing the answer you got.  OK?

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A researcher believes that 12% of a simple random sample of adults will be able to identify a Toyota Scion by brand and model na
DochEvi [55]

Answer: 650

Step-by-step explanation:

When prior estimate of population proportion is known , then the formula to find the required sample size is given by :-

n=p(1-p)(\dfrac{z^*}{E})^2

, where p= population proportion

E= margin of error

z* = Critical value.

Let p be the proportion of adults able to identify a Toyota Scion by brand and model name.

As per given , we have

p = 12%= 0.12

E= 2.5%=0.025

Critical value for 95% confidence interval : z* = 1.960  [By z-table ]

Then, the required sample size = n=(0.12)(1-(0.12))(\dfrac{1.96}{0.025})^2

n=(0.1056)(78.4)^2

n=(0.1056)(6146.56)

n=649.076736\approx650

Thus , the required sample size = 650

6 0
3 years ago
125
Marina CMI [18]

Answer:

2m

Step-by-step explanation:

2250 \div 25 = 90

90 \div 45 = 2

7 0
3 years ago
What is the result of 36 divided by 9? Use the number line to find the answer.
Finger [1]

Answer:

4

Step-by-step explanation:

8 0
2 years ago
Which expression shows the miles you would drive from the grocery store to the office along this road?
Anton [14]
The answer would Be C. Or B

Your  welcome!!!!!!!
8 0
3 years ago
Read 2 more answers
How do I simplify 5 3/2
Volgvan

Note the improper fraction. Change it into a mixed fraction

3/2 = 2/2 + 1/2

2/2 = 1

5 + 1 1/2

Simplify.

5 + 1 = 6

6 1/2 is your answer

hope this helps

5 0
3 years ago
Read 2 more answers
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