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anygoal [31]
2 years ago
10

Find square root of 7056

Mathematics
1 answer:
Tcecarenko [31]2 years ago
3 0
The square root of 7056 is

84
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Laura, Milan, and Ravi have a total of 93$ in thier website. Ravi has 9$ less than Laura. Milan has 2 times what ravi has. How m
Natalija [7]

Answer:

L = 30\\R = 21\\M = 42

Step-by-step explanation:

Let's assign each person a variable using the first letter of his/her name.

Then we get the following equations based on the information given:

L + M + R = 93\\L - 9 = R\\M = 2R

Then we can use substitution:

L + M + R = 93\\L + (2R) + R = 93\\L + 3R = 93

Rearrange the second equation:

L - R = 9

Multiple the equation by 3:

3L - 3R = 27

Combine the equations to solve for a single variable (L):

L + 3L = 4L\\3R - 3R = 0\\93 + 27 = 120

Then we have a new equation:

4L = 120\\L = 30

Use substitution to get the rest:

L - 9 = R\\(30) - 9 = R\\R = 21\\\\M = 2R\\M = 2(21)\\M = 42

4 0
3 years ago
30 POINTS!!!!!
Whitepunk [10]

Answer:

A third group that does not use a cell phone before bedtime

Step-by-step explanation:

Both groups have the use of a cellphone before bedtime, and the amount used would affect their time to fall asleep, but another group is needed that doesn't use a cellphone to calculate the effect of it not being used and seeing the results.

8 0
2 years ago
A publisher reports that 38%38% of their readers own a laptop. A marketing executive wants to test the claim that the percentage
Kruka [31]

Answer: - 0.71

Step-by-step explanation:

Let p = population proportion

po = sample proportion.

From the question,

p = 38% = 38/100 = 0.38

po = 32% = 32/100 = 0.32

Sample size (n) = 340.

Since our sample size is greater than 30 ( n= 340) we will be making use of a z test for our test statistics.

The population standard deviation of the data set is given below as

σ = √p(1 - p).

σ = √0.38 (1 - 0.38)

σ = √0.38 × 0.62

σ =√0.2356

σ = 0.49.

Z score = po - p/ (σ/√n)

Z score = 0.32 - 0.38/ (0.49/√340)

Z score = - 0.06 / 0.0266

Z score = - 0.71

6 0
3 years ago
Which is Greater?<br><br> 0.034 or 0.04
Yuki888 [10]
The second option 0.04 is greater

5 0
2 years ago
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