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Y_Kistochka [10]
3 years ago
9

A line is reflected. Which of these could be the result? A. B. C. D.

Mathematics
1 answer:
ss7ja [257]3 years ago
5 0
B is the answer to this question
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What is the side length of a square with the area of 20cm2
rodikova [14]

Answer:

S = a² => 20 = a² => a = √20 ≈ 4.5 cm

Step-by-step explanation:

5 0
3 years ago
729, 243, 81, 27 find the sequence
PSYCHO15rus [73]

Answer:

a = 729/3^-1

Step-by-step explanation:

8 0
3 years ago
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On day two of a study on body temperatures, 106 temperatures were taken. Suppose that we only have the first 10 temperatures to
Hitman42 [59]

Answer:

The 95% confidence interval = (98.225, 98.655)

Step-by-step explanation:

The formula for Confidence Interval =

Mean ± z × standard deviation/√n

Where Mean = 98.44°F

Standard deviation = 0.30°F

n = number of samples is 10

Because our number if samples is small, we use the t score confidence interval formula

Mean ± t × standard deviation/√n

Degrees of Freedom = n - 1

= 10 - 1 = 9

We find the t score of 95% confidence interval and degrees of freedom 9

= 2.262

Hence,

Confidence interval = 98.44 ± 2.262 × 0.30/√10

= 98.44 ± 0.214592162

Confidence Interval

98.44 - 0.214592162

= 98.225407838

≈ 98.225

98.44 + 0.214592162

= 98.654592162

≈ 98.655

The 95% confidence interval = (98.225, 98.655)

5 0
3 years ago
P(A) = 1/2<br> P(B) = 1/3<br> PIAN B) = 1/6<br> Find P(AUB)
Oksi-84 [34.3K]

P(A\cup B)=P(A)+P(B)-P(A\cap B)

so that P(A U B) = 1/2 + 1/3 - 1/6 = 2/3

5 0
3 years ago
Which expression is equivalent to 32 ⋅ 3−5? fraction 1 over 3 to the power 3 fraction 1 over 3 to the power 7 fraction 1 over 3
mars1129 [50]
Given expression 3² × 3⁻⁵

We will apply the power rule x^m*x^n=x^{m+n}

3² × 3⁻⁵ = 3²⁺⁽⁻⁵⁾ = 3²⁻⁵ = 3⁻³

We will then apply the power rule x^{-n} =  \frac{1}{x^n}

3⁻³ = \frac{1}{3^3}

Final answer: \frac{1}{3^3}
3 0
3 years ago
Read 2 more answers
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