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Alik [6]
2 years ago
12

Rewrite as difference of squares (2x+5)(2x-5)

Mathematics
1 answer:
andre [41]2 years ago
4 0
4x^2-25

I got u homie wherever in the world u r
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Solve?????????????????
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20/98

Step-by-step explanation:

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3 years ago
the data in the table below represents a linear relationship . what is the missing piece of data table and answer choices will b
Gennadij [26K]

C) 2

1) Given the table, let's find out that missing data picking 2 points (2,-10) and (6,-4)

Since we have the slope, let's work on finding the linear coefficient

plugging point (2,-10) into that:

y= mx +b

-10 =3/2(2) +b

-10 =6/2 +b

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b= -13

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3 0
1 year ago
. A used car dealer says that the mean price of a two-year old sedan (in good condition) is at least $20,500. You suspect this c
Taya2010 [7]

Answer: There is sufficient evidence to reject the dealer's claim that the mean price is at least $20,500

Step-by-step explanation:

given that;

n = 14

mean Ж = 19,850

standard deviation S = 1,084

degree of freedom df = n - 1 = ( 14 -1 ) = 13

H₀ : ц ≥ 20,500

H₁ : ц < 20,500

Now the test statistics

t = (Ж - ц) / ( s/√n)

t = ( 19850 - 20500) / ( 1084/√14)

t = -2.244

we know that our degree of freedom df = 13

from the table, the area under the t-distribution of the left of (t=-2.244) and for (df=13) is 0.0215

so P = 0.0215

significance ∝ = 0.05

we can confidently say that since our p value is less than the significance level, we reject the null hypothesis ( H₀ : ц ≥ 20,500 )

There is sufficient evidence to reject the dealer's claim that the mean price is at least $20,500

6 0
2 years ago
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