All categories

3 years ago

EVAN

Mathematics

1 answer:

CaHeK987 [17]3 years ago

3 0

Answer:

n = -8

Step-by-step explanation:

Given the expression

(-2y-3) + (-6y-5) = (ny -8),

Expanding the LHS

-2y-3 - 6y -5 = ny - 8

-2y-6y-3-5 = ny - 8

-8y - 8 = ny - 8

Compare both sides

-8y = ny

-8 = n

Swap

n = -8

Hence the value of n is -8

You might be interested in

A rectangular room is 3 meters longer than it is wide, and its perimeter is 26 meters. Find the dimension of the room. The lengt

Juli2301 [7.4K]

Perimeter is the sum of all 4 walls.

Divide the perimeter in half for the total of the width + the length:

26/2 = 13 meters

Subtract the difference in length:

13 - 3 = 10

Divide by 2 walls:

10/2 = 5

The width is 5 metes.

The length is the 5 metes + the 3 meter difference = 5 +3 = 8 meters.

The length is 8 meters and the width is 5 meters.

5 0

3 years ago

A superintendent of a school district conducted a survey to find out the level of job satisfaction among teachers. Out of 53 tea

frez [133]

Answer:

b. 1.15

Step-by-step explanation:

The z statistics is given by:

$Z = \frac{X - p}{s}$

In which X is the found proportion, p is the expected proportion, and s, which is the standard error is $s = \sqrt{\frac{p(1-p)}{n}}$

Out of 53 teachers who replied to the survey, 13 claim they are satisfied with their job.

This means that $X = \frac{13}{53} = 0.2453$

She find that the proportion of satisfied teachers nationally is 18.4%.

This means that $p = 0.184$

Standard error:

p = 0.184, n = 53.

$s = \sqrt{\frac{0.184*0.816}{53}} = 0.0532$

Z-statistic:

$Z = \frac{X - p}{s}$

$Z = \frac{0.2453 - 0.184}{0.0532}$

$Z = 1.15$

The correct answer is:

b. 1.15

5 0

4 years ago

What is the side length of an equilateral triangle that has a perimeter of 24.6 cm ?

stepan [7]

The length of an equilateral triangle is C. 8.2 cm

4 0

3 years ago

If 217 shoppers out of 1000 were female, how many shoppers out of 100 would be female?

9966 [12]

21.7 so you would probably round down too 21 because you can't have 0.7 of a person

8 0

3 years ago

Please help! Finding the center of a circle with the given equation

kykrilka [37]

The answer is (-7,3). Hope it helps. Tell me if you need the whole work or if I'm wrong.

6 0

3 years ago