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alex41 [277]
3 years ago
7

the store has 28 notebooks in packs of 4. three packs of notebooks were sold. hiw many packs of notebooks are left

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
8 0
There are 4 notebooks left. Hope this helps :)
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Inscribed angles math lib <br> Need help with 9 and 10 thank you!!
telo118 [61]

Answer:

54° and 110°

Step-by-step explanation:

The opposite angles of a cyclic quadrilateral are supplementary, sum to 180°

(9)

19x - 26 + 7x - 2 = 180

26x - 28 = 180 ( add 28 to both sides )

26x = 208 ( divide both sides by 26 )

x = 8

Then

∠ EFG = 7x - 2 = 7(8) - 2 = 56 - 2 = 54°

(10)

21x - 33 + 14x + 3 = 180

35x - 30 = 180 ( add 30 to both sides )

35x = 210 ( divide both sides by 35 )

x = 6

Then

∠ YVW = 14x + 3 = 14(6) + 3 = 84 + 3 = 87°

The inscribed angle YVW is half the measure of its intercepted arc YW, so

arc YW = 2 × 87° = 174°, then

arc XW = 174° - 64° = 110°

8 0
3 years ago
James started walking away from his house. He started 3 ft away from his front door. He then walked another unknown distance Nor
Zielflug [23.3K]

Answer:

3 because if the limit is 2 you X it by 2 and take away a fourth of the answer 3 because if the limit is 2 you X it by 2 and take away a fourth of the answer

Step-by-step explanation:

6 0
3 years ago
A researcher is wondering whether the smoking habits of young adults (18-25 years of age) in a certain city in the U.S. are diff
Usimov [2.4K]

Answer:

For this case we want to test if in a certain city in the U.S. are different from the proportion of the general population of young adults in the U.S 0.16 (alternative hypothesis) and the best system of hypothesis are:

Null hypothesis: p=0.16

Alternative hypothesis:p \neq 0.16

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".  

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".  

Solution to the problem

For this case we want to test if in a certain city in the U.S. are different from the proportion of the general population of young adults in the U.S 0.16 (alternative hypothesis) and the best system of hypothesis are:

Null hypothesis: p=0.16

Alternative hypothesis:p \neq 0.16

8 0
3 years ago
Helpoppppp ugh.... I hate math
MissTica
If it is (6^-4)^6 it should be 1/6^24. The picture was a bit blurry.

Hope this helps and thank you for using Brainly!
7 0
3 years ago
A certain jar consists of eight green marbles, three black and eight red marbles. if three marbles are drawn at random, find the
Ivanshal [37]
7/23rds is the correct answer.
6 0
3 years ago
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