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Basile [38]
3 years ago
14

I need help answering this question please & thank you

Mathematics
1 answer:
belka [17]3 years ago
3 0
The answer is secant.
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Mr. Peter's has 80 sheets of colored paper seven of his students need it for a project. how many sheets are left over?
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73 sheets are left over
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What is 1/3 × 4/1 in mixed number? (simplified)
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The answer to this question is 1 1/3
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Below is a data set. Use desmos to find the slope, y-intercept, and correlation
Debora [2.8K]

The slope of the least squares regression line is 1.0 and the y-intercept is 6.3

<h3>How to determine the slope?</h3>

To do this, we enter the data values in a graphing calculator, and we interpret the results:

Using a graphing calculator, we have the following calculation summary

  • Sum of X = 83
  • Sum of Y = 123
  • Mean X = 13.8333
  • Mean Y = 20.5
  • Sum of squares (SSX) = 356.8333
  • Sum of products (SP) = 365.5
  • R = 0.8728

The slope (b) is calculated using:

b = SP/SSX

This gives

b = 365.5/356.83

b  = 1.0

Hence, the slope is 1.0

<h3>How to determine the y-intercept?</h3>

The y-intercept (a) is calculated using:

a = MY - bMX

a = 20.5 - (1.02*13.83)

a = 6.3

Hence, the y-intercept is 6.3

<h3>How to determine the correlation coefficient?</h3>

In (a), we have:

R = 0.8728

Approximate

R = 0.9

This means that the correlation coefficient is 0.9

Read more about regression at:

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3 0
3 years ago
Need help on geometry
victus00 [196]

Answer:

2\sqrt {10}

Step-by-step explanation:

Given:

x=3\sqrt 5

y=\sqrt 5

As seen from the triangle, the triangle is a right angled triangle. Two sides of the triangle are given and we are asked to find the third side.

'x' is the hypotenuse as this side is opposite side to the right angled.

'y' and 'z' are the two legs of the triangle.

Now, using pythagoras theorem,

x^2=y^2+z^2\\\\(3\sqrt 5)^2=(\sqrt 5)^2+z^2\\\\9\times 5=5+z^2\\\\45-5=z^2\\\\40=z^2\\\\z=\sqrt {40}\\\\z=2\sqrt {10}

Therefore, the measure of the side 'z' is 2\sqrt {10}.

Hence, the third option is correct.

4 0
3 years ago
Kremena's bank account earns 4.5% simple interest. How much must she deposit in the account today if she wants it to be worth $1
anastassius [24]

Answer: Kremena needs to deposit $1,101 today to earn a total of $1,250 in 3 years at 4.5% simple interest rate

Step-by-step explanation:

Interest = Principal (P) × Rate (R) × Time (T)

Amount = Principal (P) + Interest

Amount = P + PRT

Amount = P (1 + RT)

1250 = P (1 + (0.045 × 3))

1250 = P (1 + 0.135)

1250 = P (1.135)

Principal = 1250 ÷ 1.135

Principal = approx. 1101

5 0
3 years ago
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