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suter [353]
3 years ago
5

If y equals -6 when x equals 9 find X when y equals -3

Mathematics
2 answers:
lora16 [44]3 years ago
8 0
X would equal 12 because, to go from -6 to -3 you would need to add 3. Do the same with nine, 9 + 3 = 12.
Aleonysh [2.5K]3 years ago
6 0
The thought process here is meant to be along these lines:

y = -6 when x =9

y = -3, and -3 is half of -6. so, proportionally speaking, if -3 is half of 6, the x value that the question asks for will have to be half of 9 -- 4.5.
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Answer:

Veronica:

d=5t

Chad:

d=4t

Step-by-step explanation

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4 0
3 years ago
According to an​ airline, flights on a certain route are on time 80 ​% of the time. suppose 10 flights are randomly selected and
natulia [17]
<span>(a) This is a binomial experiment since there are only two possible results for each data point: a flight is either on time (p = 80% = 0.8) or late (q = 1 - p = 1 - 0.8 = 0.2).
​(b) Using the formula:</span><span>
P(r out of n) = (nCr)(p^r)(q^(n-r)), where n = 10 flights, r = the number of flights that arrive on time:
P(7/10) = (10C7)(0.8)^7 (0.2)^(10 - 7) = 0.2013
Therefore, there is a 0.2013 chance that exactly 7 of 10 flights will arrive on time.
​(c) Fewer than 7 flights are on time means that we must add up the probabilities for P(0/10) up to P(6/10).
Following the same formula (this can be done using a summation on a calculator, or using Excel, to make things faster):
P(0/10) + P(1/10) + ... + P(6/10) = 0.1209
This means that there is a 0.1209 chance that less than 7 flights will be on time.
​(d) The probability that at least 7 flights are on time is the exact opposite of part (c), where less than 7 flights are on time. So instead of calculating each formula from scratch, we can simply subtract the answer in part (c) from 1.
1 - 0.1209 = 0.8791.
So there is a 0.8791 chance that at least 7 flights arrive on time.
(e) For this, we must add up P(5/10) + P(6/10) + P(7/10), which gives us
0.0264 + 0.0881 + 0.2013 = 0.3158, so the probability that between 5 to 7 flights arrive on time is 0.3158.
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6 0
3 years ago
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y=5x+12

hope i could help!

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2 years ago
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Kisachek [45]
Ummm search it up on google it should be on there
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2 years ago
Which is the correct first step for solving this equation? 2x-7=5?
scZoUnD [109]

Answer:

to get x by itself so divide 5 by 2 and then add 7 to the other side

Step-by-step explanation:

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4 0
3 years ago
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