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Zolol [24]
3 years ago
7

What is the value of x? Enter your answer in the box.

Mathematics
1 answer:
lesantik [10]3 years ago
3 0

Answer:

Looks like 4x...

Step-by-step explanation:

10x - 20 = -10x

6x +8 = 14x

put them together, you get 4x

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There were 442 students at Deerlake Middle School who voted on a theme for the spring carnival. Those who voted represent 76% of
never [62]

Answer:

Option C is correct.

Step-by-step explanation:

Number of students of Deerlake middle school that voted = 442

Percentage of student that voted = 76%

Let x be the total number of student.

According to the Question,

\frac{76}{100}\times x=442

x=442\times\frac{100}{76}

x=582

Therefore, Option C is correct.

7 0
3 years ago
Explain how division and multiplication are similar and different.
Sergeu [11.5K]

Answer:

well when you are dividing you can multiply the answer and the second number to get the first number. And when you multiply you can divide the answer to any of the number to get the other number. Hope this helped!

4 0
3 years ago
Help please!!!!!!!!!!​
maksim [4K]

Answer:

110 degrees

Step-by-step explanation:

the angles stay the same even if the size changes!

3 0
3 years ago
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I need some help I have no idea <br><br> 22L/min= xL/hour <br> Complete the conversion.
omeli [17]

Answer:

may be 1320L/hr

Step-by-step explanation:

not sure

7 0
3 years ago
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An ecological group suspects tuna are consuming dangerous levels of copper in a region of the world. Dangerous levels of copper
Mademuasel [1]

Answer:

Step-by-step explanation:

A) From the stem-leaf plot, we see that out of 21 tunas, 5 have dangerous levels of copper since the levels go beyond 5.7 parts per million. The required proportion is 5/21=0.2381

B) Given the sample mean is {x}=4.77, sample standard deviation s=1.16 and the sample size is n=21.

Since the population standard deviation is not known, we use t-distribution.

So the 98% CI for mean is

4.77 ± t{1-0.02 /2,20} x 1.16/sqrt(21) = (4.13, 5.41)}

We are sure with 98% confidence the true copper level (in parts per million) lies in the interval (4.13, 5.41)

8 0
3 years ago
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