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GaryK [48]
2 years ago
14

A group of students investigated the effect of temperature of vinegar on its reaction time with baking soda. To minimize the ran

dom errors, they did 3 trials for each temperature change. The following data were collected. At 30 °C, the times it takes for baking soda to react in seconds are 30.1, 30.9 and 30.2 for Trials 1, 2 and 3 respectively. At 55 °C, they recorded the reaction times for the three trials as 25.6 s, 25.9 s and 25.5 s. At 60 °C, the data were 20.0 s, 19.8 s and 19.3s for the three trials. At 75 °C, they recorded the reaction times for the three trials as 15.0 s, 15.2 s and 15.5s. At 90 °C, the reaction times gathered for the three trials are 8.3 s, 8.9 s and 8.8 s. The Effect of (IV) on (DV) Fill in your information and DELETE mine off the template! (including this note and the scenario)​
Mathematics
1 answer:
worty [1.4K]2 years ago
8 0

Answer:

ehifhidbviasbeoifoaweilbfjwBFUWGUF

Step-by-step explanation:

next time you answer someone's question with a bunch of random letters just to get the points don't. It rude especially sense you have questions you want answered. Now I could be nice and help you because I know how to solve this and you obviously don't, but I'm giving you the same curtesy as you did me and writing a bunch of gibberish.

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Step 1: d+3 &lt; 1 <br><br> Step 2: b+6&lt; 9
In-s [12.5K]

Answer:

1) d < -2

2) b < 3

Step-by-step explanation:

1) d+3< 1

subtract both sides by 3

d+3 -3 < 1-3

d<-2

2) b+6< 9

subtract both sides by 6

b+6 -6 < 9 -6

b< 3

3 0
2 years ago
80 is what percent 300 ( please explain)
egoroff_w [7]
It’s about 26.67%... hope this helps!
6 0
3 years ago
Read 2 more answers
PLS HELPPP MEEE ILL GIVE BRAINLIEST
Arlecino [84]

Answer:

y = 2

Step-by-step explanation:

not sure but should be it

4 0
3 years ago
Read 2 more answers
A hair salon in Cambridge, Massachusetts, reports that on seven randomly selected weekdays, the number of customers who visited
morpeh [17]

Answer:

a: 28 < µ < 34

Step-by-step explanation:

We need the mean, var, and standard deviation for the data set.  See first attached photo for calculations for these...

We get a mean of 222/7 = 31.7143

and a sample standard deviation of: 4.3079

We can now construct our confidence interval.  See the second attached photo for the construction steps.

They want a 90% confidence interval.  Our sample size is 7, so since n < 30, we will use a t-score.  Look up the value under the 10% area in 2 tails column, and degree of freedom is 6 (degree of freedom is always 1 less than sample size for confidence intervals when n < 30)

The t-value is: 1.943

We rounded down to the nearest person in the interval because we don't want to over estimate.  It said 28.55, so more than 28 but not quite 29, so if we use 29 as the lower limit, we could over estimate.  It's better to use 28 and underestimate a little when considering customer flow.

5 0
3 years ago
For the question I just asked
guajiro [1.7K]

Answer:

a = 36

Step-by-step explanation:

We use pythagoras theorem here.

h = 60

p = 48

b = a

h² = p² + b²

60² = 48² + b²

3600 = 2304 + b²

b² = 3600 - 2304

b² = 1296

b = 36

7 0
3 years ago
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