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HACTEHA [7]
3 years ago
13

Without using Desmos what is the complete factorization of 5x^2-20? Please show work , please help

Mathematics
1 answer:
Simora [160]3 years ago
3 0

Answer:

5(x+2)(x-2)

Step-by-step explanation:

Find the greatest common factor (GCF) of the 2 terms:

GCF is 5.

Factor out the GCF:

5x^2-20\\5(\frac{5x^2}{5} -\frac{20}{5} )\\5(x^2-4)

Rewrite as a difference of squares (a^2-b^2=(a+b)(a-b)):

5(x^2-2^2)\\5(x+2)(x-2)

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A Florida neighborhood is comprised of a total of 250 houses of which 12% are in foreclosure. A random sample of 91 homes from t
natka813 [3]

Answer:

the standard error of the proportion is 0.0272

Step-by-step explanation:

We have that if the sample size is greater than 5% of the entire population, a finite population correction factor (fpc) is multiplied with the standard error :

fpc = \sqrt{\frac{N -n}{N -1} }

We know that N = 250 n = 91, replacing:

fpc = \sqrt{\frac{250 - 91}{250 -1} }

fpc = 0.799

Now, the formula would then be:

SE  = \sqrt{\frac{p * (1 -p)}{n} }*fpc

Now replacing, knowing that p = 0.12

SE= \sqrt{\frac{0.12 * (1 - 0.12)}{91} }*0.799

SE = 0.0272

So the standard error of the proportion is 0.0272

6 0
3 years ago
Please please please please help
Andrej [43]

Answer:

true

Step-by-step explanation:

yes the statement is correct

8 0
2 years ago
Are these integers please help
dolphi86 [110]

Answer:

63/9 = 7 -> Yes

-94 -> Yes

30/6 = 5 -> Yes

-16/3 ~ -5,33 -> Nope

-29,86 -> Nope

Step-by-step explanation:

Integers are whole Numbers.

For example 1,2,3,4,5...

The numbers between numbers are rational numbers.

Fir example:

1,2 ( between 1 and 2)

3,8 (between 3 and 4)

2,6 (between 2 and 3)

5 0
3 years ago
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11+102 +73 = 186 total killed for ivory = 186 Total killed 19 + 129 + 139 = 287. What percent of the total elephants killed does
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Answer:

64.8% of elephants were killed for ivory

Step-by-step explanation:

divide the number of elephants killed for ivory by the total number of elephants killed: 186÷287= 0.6780

multiply your answer by 100 to get a percentage: 0.6780 x 100= 67.8%

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3 years ago
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Since many viruses can infect a large number of different cell types, ... An example is potato yellow dwarf virus, which can grow in leafhoppers

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