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coldgirl [10]
3 years ago
6

Practice 7) fill in the blanks.

Mathematics
1 answer:
DiKsa [7]3 years ago
7 0

(h,k) is the vertex

b/2a is the line of symmetry

a > 0 parabola opens upward, vertex is a minimum

a < 0 parabola opens downward, vertex is a maximum

My first answer was deleted lolol

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Which expression is equivalent to 6a + 15? A. 6(a + 5) B. 3(2a + 5) C. 3(3a + 12) D. 6(a + 12) PLEASE HELP :)
makvit [3.9K]
The answer is B

A. 6(a+5)
=6a+30 not equivalent to 6a+15
B.3(2a+5)
=6a+15 is equivalent
C.3(3a+12)
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D.6(a+12)
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So your answer is B
4 0
3 years ago
Read 2 more answers
Angel bought 8 oranges and 11 apples for a total of $15.22.He knows that each orange cost $0.50 and reasoned that each Apple mus
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Oranges = x
apples = y

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x = 0.50

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11y = 11.22
y = 11.22/11
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3 0
3 years ago
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SSSSS [86.1K]

Answer:

B

Step-by-step explanation:

3 0
2 years ago
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The mean number of words per minute (wpm) read by sixth graders is 89 with a variance of 625. if 96 sixth graders are randomly s
Luba_88 [7]
The z-score of the information given is:
z=(x-μ)/σ
where
μ-mean
σ- standard deviation

from the information given:
x=93.02
μ=89
σ=√625=25
hence
z=(93.02-89)/25
z=0.1608
thus
P(X≥x)=1-0.5636=0.4364=43.64%
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