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forsale [732]
3 years ago
14

The equation below describes a parabola. If a is positive, which way does the parabola open? x=ay^2

Mathematics
1 answer:
Ilya [14]3 years ago
6 0
Positive parabolas are concave, and usually open upwards or downwards if they are functions ( functions have one output for every input). However, since your equation is x=ay^2, then your parabola is set to point rightwards (note, it is not a function since for every input of x, you can have multiple outputs of y). The above image was found by typing your equation into Google search, so as to give you an idea of what I am talking about and also to check my own answer.

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Factorise k(a³ + b³)-m(a³ + b³)​
Neporo4naja [7]

Answer:

this is so easy

Step-by-step explanation:

8 0
3 years ago
Sara can type 90 words in 4 minutes about how many words would you expect her to type in 10 minutes at this rate
Gekata [30.6K]
 first divide 90 by 4 to see how many words per minute

90 ÷ 4 = 22.5

 then multiply 22.5 by 10 to get your answer

so your answer is;

225 words per 10 minutes

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Nutka1998 [239]

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Step-by-step explanation:

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Read 2 more answers
A city issues 3-digit license plates for motorized scooters. The digits 0-9 are chosen at random by a computer program. What is
dimaraw [331]

Answer:

80/111

Step-by-step explanation:

For starters, since it is 3 digits inclusive of 0, from 0 - 9, then there are 1000 possible total plate combination from 000 - 999.

If no number is expected to be repeated in the combination, then there exists 10 numbers(say 0-9) for the first digit, 9 numbers(say 1-9) for the second digit and 8 numbers(1-8) for the third digit.

This means that there will be 10 * 9 * 8 total possible outcomes. Considering that the possible combinations is 999, then the probability is

10 * 9 * 8 = 720/999

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7 0
2 years ago
a) The average height of sunflowers in a field is 64 inches with a standard deviation of 3.5 inches. Describe a normal curve for
tresset_1 [31]
The values on the horizontal axis are:
at 0 = 64
at one standard deviation (lower, upper) = (60.5 , 67.5)
at two standard deviation (lower, upper) = (57 , 71)
at three standard deviation (lower, upper) = (53.5 , 74,5)

B. P(x > 71) = 1 - P(x < 71) = 1 - P[z < (71 - 64)/3.5] = 1 - P(z < 2) = 1 - 0.97725 = 0.02275
Therefore the no of plants taller than 71 inches will be approximately 0.02275 * 3000 = 68

8 0
3 years ago
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