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skelet666 [1.2K]
3 years ago
10

Bonita said that the product of 5/6× 1 2/3 is 7/3. How can you tell that her answer is wrong?

Mathematics
1 answer:
Olin [163]3 years ago
5 0

\frac{5}{6}  \times 1 \frac{2}{3}  \\ \\   = \frac{5}{6}  \times  \frac{1 \times 3 + 2}{3}   \\ \\  = \frac{5}{6}  \times  \frac{5}{3}  \\  \\  =  \frac{25}{18}

The correct answer is 25/18.

her answer is wrong
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Find the area of a regular hexagon with a 48-inch perimeter.
kiruha [24]
A= \cfrac{3 \sqrt{3} }{2}*a^2 \ \ \ \ [a=sidelength]  \\   \\ a=48/6=8 \ in \\ \\ \\ A= \cfrac{3 \sqrt{3} }{2}*(8)^2=A= \cfrac{3 \sqrt{3} }{2}*64=3 \sqrt{3}*32= 96 \sqrt{3} \ \ in^2
7 0
3 years ago
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According to the article "Fatigue Testing of Condoms" (Polymer Testing, 2009: 567–571), "tests currently used for condoms are su
daser333 [38]

Answer:

99% Confidence interval:  (1196,1973)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 20

Mean, μ = 1584

Standard Deviation, σ = 607

99% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.01} = \pm 2.86  

1584 \pm 2.86(\dfrac{607}{\sqrt{20}} )\\\\ = 1584 \pm 388.18\\ = (1195.82 ,1972.18)\\ \approx (1196,1973)

Thus, there is a 99% chance that it will break in approximately 1196 to 1972

6 0
2 years ago
Goblin gryh can count the coins in a bag in 10 minutes. of goblin Birt counts with him, they can count all the coins in 6 minute
Georgia [21]

Goblin Birt can take 15 minutes to count the coins in the bag by himself.

<h3>What is unitary mehtod?</h3>

The unitary method is a process for solving a problem by first finding the value of a unit, and then finding the necessary value by multiplying the single unit value.

<h3>How to calculate how long would it take goblin Birt to count the coins in the bag by himself ?</h3>
  • In this problem, unitary method is to be applied three times.
  • Here, counting all the coins is considered as the entire work which is considered as 1.

According to the problem,

  • Goblin gryh can count the coins in a bag in 10 minutes.

∴ In 10 minutes Goblin gryh can count the coins in the bag.

∴ In 1 minute Goblin gryh can count \frac{1}{10} th part of the coins in the bag.

Again, according to the problem,

  • Goblin gryh and Goblin Birt both can count all the coins in 6 minutes.

∴ In 6 minutes, Goblin gryh and Goblin Birt both can count all the coins in the bag

∴ In 1 minute, Goblin gryh and goblin Birt both can count \frac{1}{6} th  part of the coins in the bag.

∴ In 1 minute, Goblin Birt can count (\frac{1}{6} - \frac{1}{10}) th part of the coins in the bag.

                                             = \frac{5-3}{30} = \frac{2}{30} = \frac{1}{15} th part of the coins.

∴ We can say,

Goblin Birt can count \frac{1}{15} th part of the coins in the bag in 1 minute.

∴ Goblin Birt himself can count all the coins in the bag in 15 minutes.

Find out more information about calculation by unitary method here:

brainly.com/question/24587372

#SPJ2

6 0
2 years ago
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Peter rolls 2 fair dice and adds the results from each.
Diano4ka-milaya [45]

Answer:

i think it might be 17%

Step-by-step explanation:

if you divide 100 by 10 u get 10 then divide 10 by 6 to get 1.6666666667 round that to one decimal place to get 1.7 then times it by 10 to get 17

6 0
3 years ago
on average, the U.S. produces 36.5 millions tons of fruit each year. about how much fruit does it produce in 2.25 years ?
Karo-lina-s [1.5K]
I usually break it down so 2.25 is 2 1/4 so then a 36.5 million is basically 36m 1/2 36+36 is 72+1 is 73 and a 1/4 of 36 is 9 and that's it just right your answer put using the info here and it should be right if not pls let me know so I can figure out what I did wrong and try again
3 0
3 years ago
Read 2 more answers
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