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Karolina [17]
3 years ago
5

PLEASE HELP NO LINKS!! The temperature change in a chemistry experiment was –2C every 30 min.

Mathematics
2 answers:
dexar [7]3 years ago
4 0

Answer:

what do you mean

Step-by-step explanation:

?

Colt1911 [192]3 years ago
4 0

Answer:

The temperature change in a chemistry experiment was -2C every 30 min. The initial temperature was +6C. What was the temperature after 4 h

4 hours = 8 half hours

0, 1, 2, 3, 4, 5, 6, 7, 8 half hours

6, 4, 2, 0, -2, -4, -6, -8, -10

-10 degrees C

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What is -(x - 8) simplified?
expeople1 [14]
You really can’t simply it but if u use disruptive property it would be -x - -8
5 0
3 years ago
A bottle contains 2 green gum balls, 2 red gum balls, and 1 blue gum ball.
aliya0001 [1]

Answer:

3/5

Step-by-step explanation:

First add all of the balls together to know the total.

2 + 2 + 1 = 5

Probability of Green: 2/5

Probability of Red: 2/5

Probability of Blue: 1/5

Add red and blue together

2/5 + 1/5 = 3/5

3/5

Brainliest would be appreciated. :)

5 0
3 years ago
Which composition of similarity transformations maps polygon ABCD to polygon A'B'C'D'?
Elis [28]

Answer:

A dilation with a scale factor less than 1 and then a reflection.

Step-by-step explanation:

A dilation with a scale factor less than 1 and then a reflection is the composition of similarity transformations maps polygon ABCD to polygon A'B'C'D.

4 0
3 years ago
Read 2 more answers
382 3/10 - 191 87/100=
frosja888 [35]
382  \frac{3}{10}  - 191  \frac{87}{100} =(382 + \frac{3}{10} ) - (191 + \frac{87}{100}) =\\\\=382 + \frac{30}{100} -191- \frac{87}{100} =382  -191+ \frac{30}{100}- \frac{87}{100} =\\\\=191+ \frac{30}{100}- \frac{87}{100} =190+ \frac{100}{100}+ \frac{30}{100}- \frac{87}{100} =\\\\=190+\frac{130}{100}- \frac{87}{100} =190+\frac{43}{100}=190\frac{43}{100}\\\\\\382  \frac{3}{10}  - 191  \frac{87}{100} =382.3  - 191.87 =382.3  - 191-0.87 =191.3-0.87=\\\\=190+1.3-0.87=190+0.43=190.43
5 0
3 years ago
Read 2 more answers
A Gallup Poll found that 51% of the people in its sample said "yes" when asked, "Would you like to lose weight?" Gallup announce
Nata [24]

Answer:

(a) 95% confidence interval for the percent of all adults who want to lose weight is (48%, 54%) that is between 48% and 54%

(b) to say that we have 95% confidence in this interval means that there is 95% chance that the true percentage of all adults who wants to lose weight falls in this interval.

Step-by-step explanation:

The question is missing, complete question is below:

A Gallup Poll found that 51% of the people in its sample said "yes" when asked, "Would you like to lose weight?" Gallup announced: "With 95% confidence for results based on the total sample of national adults, one can say that the margin of sampling error is ± 3%."

(a) What is the 95% confidence interval for the percent of all adults who want to lose weight?

(b) What does it mean to say that we have 95% confidence in this interval?

Confidence Interval can be calculated using p±ME where

  • p is the sample proportion of national adults who want to lose weight (51%)
  • ME is the margin of sampling error (± 3%)
4 0
4 years ago
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