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netineya [11]
2 years ago
14

a fountain on a lake sprays water in a parabolic arch modeled by the equation y = -0.3x^2 + 3x. a beam of light modeled by the e

quation -2x + 5.5y = 19.5 passes through the fountain to create a rainbow effect. if the beam cuts the water spray at points a and b, such that point b is at a higher level than point a, what distance from the ground level is point a?

Mathematics
1 answer:
dedylja [7]2 years ago
5 0
I  believe the answer to this would be 5.44 units
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A pollster contacts 74 people in the 18-21 age bracket and finds that 38 of them respond and 36 refuse to respond. When 297 peop
Nonamiya [84]

Answer:

0,250

Step-by-step explanation:

The probability that you looking for is sum of probability of getting someone in the 18-27age (74 persones) and probability to getting someone who refused (36 and 19 persones) - probability of getting some of 18-27 age who refused (36 persons).

The probability is:

P(a or b)= p(a)+p(b)-p(a&b)=74/371+(36+19)/371-36/371=0,199+0,148-0,097=0,250

7 0
3 years ago
Choose the missing step in the given solution to the inequality −2x − 14 > −4 + 3x.
Ne4ueva [31]

Answer:

Step-by-step explanation:

-2x - 14 > -4 + 3x

subtract 3x from both sides

-5x - 14 > -4

add 14 to both sides

-5x > 10

divide both sides by -5

x < -2

5 0
2 years ago
Read 2 more answers
a snack that reginald just bought has 150 calories in 3/4 of a serving. how many calories per serving is this?
77julia77 [94]
If there are 150 calories in 3/4 servings divide 150 by 3 and you get 50 ..you add 50 calories for the 1/4 servings which gives you 200 calories per serving
5 0
3 years ago
Jonas read that about 760,00 people will graduate from high school in the next four years. jonas think s this number is rounded
timofeeve [1]
760,000 in the nearest hundred is 800,000 because 6 is greater than5
8 0
3 years ago
ernesto and his family went to dinner, the tax is 6% of the price of the meal. ernesto leaves an 18% tip. with tax and tip the t
Pie
The equation would be something like this:
y=72.39+ .18x+.06x
then simplify
y=72.39+.24x
5 0
3 years ago
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