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3 years ago

Teresa went skydiving. Teresa's height (in meters) as a function of time (in seconds) is graphed.

Mathematics

1 answer:

BabaBlast [244]3 years ago

4 0

Answer:

choose B. 54 meters/second, it is closest to my calculation of 55 meters/sec

Step-by-step explanation:

To find average speed between 3 and 8 seconds, find the total distance traveled during that time.

650 meters at 3 seconds

to 375 meters at 8 seconds

then average speed = ( 650 - 375 ) / (8 - 3) = 275 /5 = 55 meters /sec

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An exterior angle of a regular polygon cannot have the measure Select one: a. 90 b. 120 c. 50 d. 40 e. 30

Otrada [13]

Answer: c. 50

Step-by-step explanation:

1. By definition, when you add the exterior angles of a regular polygon, you obtain 360 degrees and the number of sides of that polygon can be calculated by dividing 360 degrees by the measure of the exterior angle of it.

2. As you know, the number of sides cannot be fractions, therefore, if you make the folllowing division:

360°/50°=36/5

You obtain a fraction.

3. Then, an exterior angle of a regular polygon cannot have the measure is 50°.

7 0

4 years ago

Read 2 more answers

We made 63 snowflakes to decorate the room we put 38 snowflakes on the windows in hen we decided to put 25 on the door how many

Anika [276]

Answer: You will have none or if its a trick question you will still have 63 since it's still in your house

Step-by-step explanation: you had 6 to begin with subtract 38 from 63 this will give you 25 then subtract 25 from 25 then you will have zero

3 0

3 years ago

To obtain an estimate of the proportion of "full time" university students who have a part time job in excess of 30 hours per we

musickatia [10]

Answer:

2,436 students

Step-by-step explanation:

At a 90% confidence level, the z-score is 1.645 and the confidence interval is given by:

$x\pm z\frac{s}{\sqrt n}$

Where s is the standard deviation, and n is the sample size.

If they want the length of their confidence interval to be no greater than 0.2, it must be no further than 0.1 from the mean 'X':

$0.1>1.645\frac{3}{\sqrt n}\\\sqrt n>1.645*30\\n>2,435.42$

Rounding up to the next whole number, the sample size should be 2,436 students.

5 0

4 years ago

If you have 3/4 cups of flour how many eighths do you have

Shtirlitz [24]

Just do 3/4 divided by 1/8 - answer should be 6

7 0

4 years ago

Write the Equation of the line in slope intercept form<br> (0, -3), (7.5,0)

makkiz [27]

Answer:

Step-by-step explanation:

First, start off by solving for the slope using this formula:

$\frac{y_{2} -y_{1} }{x_{2}-x_{1} }$

Then, plug in the values: $\frac{0-(-3)}{7.5-0}$

Solve the equation: $\frac{3}{7.5}$

That's your slope.

Then plug in one of the coordinates given in the problem for x and y and solve this equation:

y= $\frac{3}{7.5}$ x+b

Hope that helped!!! :)

7 0

3 years ago