3 years ago

Pls help me with this problem

1 answer:

4 0

$3x - 8 = 4x - 17 \\ \\ \sf \longmapsto \: 3x + 4x = - 17 + 8 \\ \\ \sf \longmapsto \: 7x = - 9 \\ \\ \sf \longmapsto \: x = \frac{ - 9}{7}$

You might be interested in

3xy=9 is it direct variation or inverse variation or neither

steposvetlana [31]

$3xy = 9$

$y = \dfrac 9 {3x}$

$y = \dfrac 3 x$

y varies inversely with x

Answer: inverse variation

5 0

4 years ago

How many solutions does the following system of equations have?<br> y=5/2x+2<br> 2y= 5x +4

goldfiish [28.3K]

Answer:

infinite solutions

Step-by-step explanation:

y=5/2x+2

2y= 5x +4

Multiply the first equation by 2

y = 5/2 x +2

2y = 5/2 *2 x +2 *2

2y = 5x +4

Since this is identical to the second equation (they are the same), the system of equations has infinite solutions

3 0

3 years ago

Find the coefficient of the x^4y^2 term in the expansion of (2x+y)^6

Elina [12.6K]

Answer:

240

Step-by-step explanation:

When you factor it out, you get:

$64x^6 + 192x^5y +240x^4y^2 + 160x^3y^3 + 60x^2y^4 +12xy^5 + y^6$

8 0

3 years ago

A grocery store chain has been tracking data on the number of shoppers that use coupons. The data shows that 71% of all shoppers

mariarad [96]

Answer: (0.685, 0.735)

Explanation:

First, we will compute the confidence level of the given:

$\text{ Confidence Level }=\frac{36}{40}\times100\%=90\%$

They gave us a margin of error of 0.025. From the given, we know that p=71%=0.71.

The confidence interval would then be:

$\begin{gathered} (p-E,p+E) \\ =(0.71-0.025,0.71+0.025) \\ =(0.685,0.735) \end{gathered}$

Therefore, the confidence interval would then be (0.685, 0.735)

8 0

1 year ago

.....................

bulgar [2K]

Your question just shows periods.

8 0

3 years ago