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2 years ago

HURRY PLEASE!!I WILL GIVE BRAINLIEST

Mathematics

1 answer:

Irina18 [472]2 years ago

8 0

Answer:

Step 1 = 9 $\sqrt{3}$

Step 2 = 4

Step 3 = 25

Step-by-step explanation:

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A secant and a tangent meet at a 90° angle outside the circle. What must be the difference between the measures of the intercept

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Answer: the answer is c 180

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3 years ago

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If an odd number of negative numbers are multiplied together, which of the following is true about their product?

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Answer:

it will be a positive number that is even

Step-by-step explanation:

this is because two negative numbers multiplied make a positive and two odd number multiplied make an even.

please leave a thanks if im correct

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2 years ago

Find the qoutient 1 1/6 / 1/12

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Answer:

Step-by-step explanation:

$1\frac{1}{6}\div\frac{1}{12}\\ \\ \frac{7}{6}\div\frac{1}{12}\\ \\\frac{7}{6}*\frac{12}{1}\\ \\\frac{84}{6}\\ \\14$

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The British Department of Transportation studied to see if people avoid driving on Friday the 13th. They did a traffic count on

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Answer: The mean difference is between 799586.3 and 803257.9.

Step-by-step explanation: To estimate the mean difference for confidence interval:

Find the statistic sample:

d = value of 6th - value of 13th;
Sample mean of difference: mean = ∑d / n
Sample standard deviation: s = ∑(d - mean)² / n - 1;

For the traffic count, mean = 1835.8 and s = 1382607.3

The confidence interval is 90%, so:

α = $\frac{1-0.9}{2}$

α = 0.05

The degrees of dreedom are:

df = n - 1

df = 10 - 1

df = 9

Using a t-ditribution table, the t-score for α = 0.05 and df = 9 is: t = 1.833.

Error will be:

E = $t.\frac{s}{\sqrt{n} }$

E = 1.833.( $\frac{1382607.3}{\sqrt{10} }$ )

E = 801422.1

The interval is: mean - E < μ < E + mean

1835.8 - 801422.1 < μ < 1835.8+801422.1

-799586.3 < μ < 803257.9

The estimate mean difference in trafic count between 6th and 13th using 90% level of confidence is between 799586.3 and 803257.9.

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3 years ago

The function p is defined as p(x) = x2 – 3x. If the

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$q(x) = {x}^{2} - 3x - 4$

$q(10) = ( {10})^{2} - (3 \times 10) - 4$

$q(10) = 100 - 30 - 4$

$q(10) = 70 - 4$

$q(10) = 66$

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Thus the correct answer is (( C )) .

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2 years ago