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4 years ago

12

According to the survey, the average amount of time spent studying for a math test was 35 minutes, with a standard deviation of

10 minutes. What range would you expect 95% of the sample’s study times to be between if the sample was approximately normal?

2 answers:

Otrada [13]4 years ago

6 0

Answer:

its C

Step-by-step explanation:

ehidna [41]4 years ago

5 0

The answer is C. 15-55 minutes.

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3 years ago

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4 years ago

Please help! [99points]

Leto [7]

Hi!

The answer is B. Linear function.

A linear function is when the change in <em>y </em>and <em>x</em><em> </em>is constant. For example, let's make some <em>x</em> and <em>y</em> values.

x 1, 2, 3, 4, 5
y 2, 4, 6, 8, 10

When <em>x</em> increases by 1, <em>y</em> increases by 2. The change in <em>x</em> and <em>y </em>is constant, therefore, that is a linear function.

x 6, 9, 13, 26
y 3, 5, 10, 11

There is no pattern in those numbers, therefore this is not a linear function.

Hope this helps! :)
-Peredhel

5 0

4 years ago

Read 2 more answers

What is the coordinate of the circumference of the circle? Question 2 options: (-3, -1) (1/2, -1/2) (1/2, 0) (0,0)

Norma-Jean [14]

Answer:

The circumcentre of the circle is (0.5,-0.5)

Step-by-step explanation:

Since this is a right triangle, UW is its diameter.

<u>CONCEPT :</u> The angle subtended by the diameter at the circumference of the circle =90°

Hence , center of circle is midpoint of line segment UW.

U(-3,2) and W(4,-3)

Taking the midpoint ,

C( $(\frac{-3 + 4}{2} ,\frac{2-3}{2} )$

Center is C(0.5,-0.5) .

Radius = CV = $\sqrt{(-2.5)^{2}+(-3.5)^{2}}$

R = $\sqrt{\frac{37}{2} }$

Equation of circle is $(x - 0.5)^2 + (y+0.5)^2 = \frac{37}{2}$

The circumcircle of triangle is (0.5,-0.5)

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3 years ago

Blair’s new computer cost $5 dollars less than the cost of her old computer. Her new computer cost $709. How much did Blair’s ol

vlada-n [284]

Answer:

Step-by-step explanation:

709-5=705($)

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3 years ago

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