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3 years ago

Solve the equation x/3-5=y for x

Mathematics

1 answer:

Annette [7]3 years ago

6 0

X/3-5=y
add 5 to both sides
x/3=y+5
now multiply both sides by 3
x=3(y+5)
which means
x=3y+15

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GrogVix [38]

Answer:

634.5

Step-by-step explanation:

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3 years ago

There is a theory that children wearing superhero costumes are more likely to harm themselves because of the unrealistic impress

____ [38]

Answer:

$Mean = 47$

$n = 6$

$s= 16.56$

$\sqrt n = 2.45$

$SEM = 11.55$

Step-by-step explanation:

Given: The above data

Solving (a): Mean of each group

Mean is calculated as:

$Mean = \frac{\sum x}{N}$

$Mean = \frac{55 + 31 + 58 + 20 + 47 + 37+68 + 32 + 85 + 69 +58 + 52+26 + 47 + 30 +35 + 53 + 43}{18}$

$Mean = \frac{846}{18}$

$Mean = 47$

Solving (b): The sample size of each group

This is the number of rows in each group.

Hence:

$n = 6$

Solving (c): Standard deviation (s)

This is calculated as:

$s = \sqrt{\frac{\sum (x - \bar x)^2}{N}}$

So, we have:

$s= \sqrt{\frac{(55 - 47)^2 + (31 - 47)^2 +......... + (43 - 47)^2}{18}}$

$s= \sqrt{\frac{4936}{18}}$

$s= \sqrt{274.22}$

$s= 16.56$

Solving (d): Square root of n

$\sqrt n = \sqrt 6$

$\sqrt n = 2.45$

Solving (e): SEM

This is calculated as:

$SEM = \frac{s}{\sqrt N}$

$SEM = \frac{47}{\sqrt{16.56}}$

$SEM = \frac{47}{4.07}$

$SEM = 11.55$

5 0

3 years ago

Find the perimeter of the triangle. 96 20 28 48

Gnesinka [82]

Answer:

Perimeter of the triangle is 48.

Step-by-step explanation:

First, you need to calculate all sides of the triangle. You know two of them and you can use Pythagoras Theorem for calculating the third side. Pythagoras Theorem is a²+b²=c²

Here, you know a and b. So 12²=144 ; 16²=256

144+256=400

Now, you need to find root.

√400=20

The third side (c) is 20.

Now you add up all sides.

20+12+16=48

I hope I helped! I will be glad, if you mark my answer brainliest

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3 years ago

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The answer is $200 the equation is 20+10(3)+150

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3 years ago

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Levart [38]

Answer:

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3 years ago

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