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4 years ago

3/2 + y/3 = 2 what is y

Mathematics

1 answer:

Juliette [100K]4 years ago

4 0

3/2+y/3=2
3/2+y=2.3
3/2+y=6
3/2-6=-y
3-12/2=-y
-9/2=-y
-9/-2=y
9/2=y
4.5=y

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A certain store sells only T-shirts. Let the random variable X represent the number of T-shirts bought from the store on any day

faltersainse [42]

Answer:

$(a)\ \mu_y = 1125$

$(b)\ \sigma_y = 300$

Step-by-step explanation:

Given

$\mu_x = 75$ -- Mean of T-shirts

$\sigma_x = 20$ -- Standard deviation of T-shirts

$Rate = \$ 15$

Solving (a): The mean of the revenue $(\mu_y)$

To solve this, we use:

$\mu_y = Rate * \mu_x\\$

This gives:

$\mu_y = 15 * 75$

$\mu_y = 1125$

Solving (b): The standard deviation of the revenue $(\sigma_y)$

To solve this, we use:

$\sigma_y = \sqrt{Rate^2 * \sigma_2^2}$

This gives:

$\sigma_y = \sqrt{15^2 * 20^2}$

$\sigma_y = \sqrt{90000}$

$\sigma_y = 300$

7 0

3 years ago

Juan's age is 3 less than twice Robert's age. The sum of their ages is 21. How old

Harlamova29_29 [7]

Answer:

juan is 13

robert is 8

y=2x-3

Step-by-step explanation:

The equation might be wrong.

Good luck!

6 0

3 years ago

Angela has 63 eggplants in 21 rows of her eggplant garden.

Lorico [155]

Answer:

A. 27

Step-by-step explanation:

21 x 3 = 63

9 x 3 = 27

6 0

3 years ago

PLS HELP ME YOU GUYS!!! I WILL MARK BRAINLEST

e-lub [12.9K]

Answer:

the relation is a function because each input has exactly one output.

Step-by-step explanation:

the x value is not repeated so it can be considerably a function. the y values ( output) can repeat just not the input values.

4 0

3 years ago

Which lines are perpendicular to the line y – 1 = One-third(x+2)

Valentin [98]

Answer:

$y-1=-3(x+2)$

Step-by-step explanation:

The equation of the given line:

$y-1=\frac{1}{3}(x+2)$

This equation is in the form $y-y_{1}=m(x-x_{1})$ . Therefore, 1/3 is the slope.

To find a perpendicular line, take the opposite reciprocal of the slope (-1/old slope). Therefore, the slope of the perpendicular line is -3.

The equation of the perpendicular line: $y-1=-3(x+2)$

4 0

3 years ago