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3 years ago

14

A skydiver parachutes to the ground. The height y (in feet) of the skydiver after x seconds is y=-10x+3000. If the skydiver land

s on land on the ground after 300 seconds what is the x-intercept

1 answer:

makkiz [27]3 years ago

6 0

put y=0 & find x. call it x1.

put x=0 & find y. call it y1.

define the points (x1, 0) & (0, y1) on a cartesian plane. connect the points with a line to find the interception.

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A bag contains 6 green counters, 4 blue counters and 2 red counters. Two counters are drawn from the bag at random without repla

Svetach [21]

Answer:

24.24%

Step-by-step explanation:

In other words we need to find the probability of getting one blue counter and another non-blue counter in the two picks. Based on the stats provided, there are a total of 12 counters (6 + 4 + 2), out of which only 4 are blue. This means that the probability for the first counter chosen being blue is 4/12

Since we do not replace the counter, we now have a total of 11 counters. Since the second counter cannot be blue, then we have 8 possible choices. This means that the probability of the second counter not being blue is 8/11. Now we need to multiply these two probabilities together to calculate the probability of choosing only one blue counter and one non-blue counter in two picks.

$\frac{4}{12} * \frac{8}{11} = \frac{32}{132}$ or 0.2424 or 24.24%

8 0

3 years ago

Please help me with the question please ASAP ASAP please please ASAP please please help please please ASAP

maks197457 [2]

Angle 1 - 60 degrees

Angle 2 - 30 degrees

Angle 3 - 60 degrees

Angle 4 - 30 degrees

6 0

3 years ago

Mr. Blue drove from Allston to Brockton, a distance of 105 miles. On his way back, he increased his speed by 10 mph. If the jour

andrew-mc [135]

Answer:

His original speed was 60 mph.

Step-by-step explanation:

The average speed formula is shown below:

speed = distance / time

For the first leg of the trip Mr. Blue drove at a speed of "x" mph, for a distance of 105 miles, therefore the time that took to complete the trip is:

time 1 = distance / speed

time 1 = 105 / x h

On the second leg of the trip Mr. Blue drove faster at a speed of "x + 10" mph, so the time it took him to complete the trip was 15 minutes less, therfore:

time 2 = time1 - (15/60) = (105/x) - 0.25 = (105 - 0.25*x)/x h

Applyint the time and speed from the second leg to the average speed formula we have:

x + 10 = {105/[(105 - 0.25*x)/x]}

x + 10 = 105*x/(105 - 0.25*x)

(x + 10)*(105 - 0.25*x) = 105*x

105*x + 1050 -0.25*x² - 2.5*x = 105*x

-0.25*x² -2.5*x + 1050 = 0 /(-0.25)

x² + 10*x - 4200 = 0

x1 = [-(10) + sqrt((10)² - 4*(1)*(-4200))]/2 = 60

x2 = [-(10) - sqrt((10)² - 4*(1)*(-4200))]/2 = -70

Since his speed couldn't be negative the only possible value was 60 mph.

5 0

3 years ago

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Zach ate breakfast at a restaurant. The bill came to $76. If he left a 15% tip, how much was the tip?

finlep [7]

If they left 15% the tip should be
$11.40, making the total fee $87.40

6 0

2 years ago

marissa [1.9K]

The answer is 188 altogether

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