Which of the following statements are true?
i. the area under a normal curve is always...
Mathematics, 19.12.2019 02:31 mat1413
Which of the following statements are true?
i. the area under a normal curve is always equal to 1, no matter what the mean and standard deviation are.
ii. the smaller the standard deviation of a normal curve is, the higher and narrower the graph.
iii. normal curves with different means are centered around different numbers.
a. i and ii
b. i and iii
c. ii and iii
d. i, ii, and iii
e. none of the above
Answers: 3
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Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants
Answers: 1
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Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?
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