8/9k + 9/5 = -4 - 9/7k

Mathematics

1 answer:

Mamont248 [21]2 years ago

7 0

Answer:

k=-1827/685

Step-by-step explanation:

8/9k+9/5=-4-9/7k

8/9k-(-9/7k)=-4-9/5

8/9k+9/7k=-20/5-9/5

56/63k+81/63k=-29/5

137/63k=-29/5

k=(-29/5)/(137/63)

k=(-29/5)(63/137)

k=-1827/685

You might be interested in

Need help Question in the screenshot below NO spam Please show your work

Alja [10]

<h3>Answer: x = 6</h3>

======================================================

Work Shown:

$\log_{4}(x+10)+\log_{4}(x-2)=\log_{4}(64)\\\\\log_{4}\left((x+10)(x-2)\right)=\log_{4}(64)\\\\(x+10)(x-2)=64\\\\x^2-2x+10x-20=64\\\\x^2-2x+10x-20-64=0\\\\$

$x^2+8x-84=0\\\\(x+14)(x-6)=0\\\\x+14=0 \ \text{ or } \ x-6=0\\\\x=-14 \ \text{ or } \ x=6\\\\$

Those are the possible solutions, but plugging x = -14 back into the original equation will lead to an error. So we rule x = -14 out

x = 6 works as a solution however

3 0

2 years ago

It takes Benjamin 28 minutes to mow two lawns. Assuming along with the same size and Benjamin works at the same speed about how

Gala2k [10]

Answer:

its really hard mark me brainly

Step-by-step explanation:

7 0

2 years ago

tom was using wire of the following thicknesses .33mm , .275mm, .25mm, .3mm for some electrical work. order the wire from thicke

Lena [83]

Thickest to thinnest....
0.33m , 0.3mm, 0.275mm, 0.25mm

5 0

3 years ago

: In a marketing survey, a random sample of 730 women shoppers revealed that 628 remained loyal to their favorite supermarket du

scoundrel [369]

Answer:

The point estimate for p is 0.86.

Step-by-step explanation:

We are given that in a marketing survey, a random sample of 730 women shoppers revealed that 628 remained loyal to their favorite supermarket during the past year (i.e. did not switch stores).

Let p = proportion of all women shoppers who remain loyal to their favorite supermarket

Now, the point estimate for the population proportion (p) is represented by ;

Point estimate for p = $\hat p$ = $\frac{X}{n}$