MATHEMATICS HIGH SCHOOL

Which statements are true regarding the area of circle D? Select two options. The area of the circle depends on the square of the radius.
The area of circle D is 36Pi centimeters squared.
The area of circle D is 324Pi centimeters squared
The area of the circle depends on the square of pi.
The area of the circle depends on the central angle.

Answers

Answer 1

Answer:

Answer:

The ratio of the measure of central angle PQR to the measure of the entire circle is 1/8

The area of the shaded sector depends on the length of the radius.

The area of the shaded sector depends on the area of the circle.

Step-by-step explanation:

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Simplify the expression:z2-z(z+3)+3z
13.A student wishes to determine the percentage of students in his school that bring a sack lunch. He decides to poll every student in his grade level. It is found that 30 percent on the students polled bring a sack lunch. The student concludes that 30 percent of the students in the school bring a sack lunch. Identify the abuse of statistics. bad sample small sample nonresponse loaded question
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Edwin and Anthony are building a rectangular deck in their backyard. The longer side is 2 ft more than 1/3 of the perimeter. The shorter side is 1/10 of the perimeter. They also know that the longer side is 9 ft longer than the shorter side. What is the perimeter of the deck?

Hot Air Balloon 1 is 10 meters above the ground, rising 15 meters per minute, and Hot Air Balloon 2 is 150 meters above the ground descending 20 meters per minute. In how many minutes will the balloons be at the same height?
How high will the balloons be at that time?
(Let x represent the time and y represent the height)

Answers

The time at which the ballons are at the same height is 4 minutes and the height of the ballons at that time is 70 meters and this can be determined by using the given data.

Given :

Hot Air Balloon 1 is 10 meters above the ground, rising 15 meters per minute.
Hot Air Balloon 2 is 150 meters above the ground descending 20 meters per minute.

The following steps can be used in order to determine the time in minutes at which the balloons be at the same height and also the height of the ballons:

Step 1 - The height of balloon 1 from the ground is:

$H_1= 10+15t$

where 't' is the time.

Step 2 - The height of balloon 2 from the ground is:

$H_2= 150-20t$

where 't' is the time.

Step 3 - So, the time at which the ballons are at the same height is calculated as:

$\begin{aligned}\n15t +10&=150-20t\n35t &= 140\nt& = 4\;{\rm minutes}\n\end{aligned}$

Step 4 - So, the height of the ballons at (t = 4) is:

${\rm Height} = 10+15* (4)$

${\rm Height} = 70\;{\rm meters}$

The time at which the ballons are at the same height is 4 minutes and the height of the ballons at that time is 70 meters.

For more information, refer to the link given below:

brainly.com/question/10726356

You have two equations
y = 10 + 15x and y = 150 - 20x
since y = y you can get
10 + 15x = 150 - 20x now we solve for x
+20x +20x add 20x to both sides
10 + 35x = 150 now subtract 10 from both sides
-10 -10
35x = 140 then divide both sides by 35
/35 /35
so x = 4 minutes

to find what high they are at 4 minutes
plug 4 back into the equation for x
y = 10 + 15(4) = 10 + 60 = 70
so 70 meters from the ground

In the first 3 days of class, daunte lost 2 pencils. if daunte keeps losing pencils at the same rate for 60 days of class,how many pencils will he lose

Answers

Answer: He would lose 40 pencils in 60 days.

Step-by-step explanation:

Since we have given that

Number of days = 3

Number of lost pencils = 2

If the number of days = 60

Then, the number of lost pencils would be 'x'.

Since there is direct variation between number of days and number of lost pencils.

So, it would be

$(3)/(2)=(60)/(x)\n\n3x=60* 2\n\nx=(120)/(3)\n\nx=40$

Hence, he would lose 40 pencils in 60 days.

He would lose at least 40 pencils.

The equation of the line of best fit of a scatter plot is y = −4x − 6. What is the the y-intercept? −6 −4 4 6

Answers

The y-intercept of the equation of the line which best fit of a scatter plot is -6. Option A is the correct option.

What is scatter plot?

Scatter plot is the plot of a graph in which the values of two variables plotted using their coordinates on the graph.

The equation of the lines represents the line by the set of points on which the line lies or passes through in the coordinate system.

$y=mx+c$

Here, (m) is the slope of the line and (c) is the y intercept.

The equation of the line of best fit of a scatter plot is

$y = -4x -6$ .

Comparing it with equation of line, we get,

$m=-4\nc=-6$

Thus, the y-intercept of the equation of the line which best fit of a scatter plot is -6. Option A is the correct option.

Learn more about the scatter plot here;

brainly.com/question/6592115

#SPJ2

The equation is in slope-intercept form, and the format for that is y equals slope times x added to the y-intercept. -6 is in the place where the y-intercept should be, so the y-intercept is -6.

In two or more complete sentences, describe why the range of y = cos(x) is -1 ≤ y ≤ 1. Make sure to reference the unit circle in your description.

Answers

Answer:

The range of cos(x) is -1 to 1 (with brackets if in interval notation as -1 and 1 can be included) is because the radius of the unit circle is also 1. If the range went past -1 or 1, the unit circle could not define those values, and would turn up as error or undefined. Now, if you replace a in y = acos(x) + b, the range would be different because you amplified the equation and thus the range and radius.

Step-by-step explanation:

Pls help dew in 5 and pls no links or trolling.

Answers

Answer:

She has to get a 5

Step-by-step explanation:

So basically you have the numbers 4, 4, and 3.

To get a mean is the average, so we need to balance out the 3.

To balance it out, we add a 5.

We would have to get 16 points for it to be a mean of 4, 4 + 4 + 3 + 5 = 16.

The data set represents a progression of hourly temperature measurements. Use a graphing calculator to determine the quadratic regression equation for this data set.I've tried all of these answers but none of them seemed correct

Answers

Answer:

Step-by-step explanation: I had this question before

Answer:

Step-by-step explanation:

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