Two bulbs are rated '60 W, 220 V' and '60 W,

deff fn [24]

Answer:

9. $0$

10. $\frac{1}{2}\\$

Exaplanation:

Please refer to my Answer from this question to know more about the slope of a line: brainly.com/question/24599351

In graph 9, we can see a line that is perfectly horizontal. Graphs of lines that are horizontal has a slope of, $0$ .

If you want we can still solve for the slope of the line in graph 9, without acknowledging that the line is horizontal.

In graph 9, we can see that the points, $(-4,-1)$ and $(2,-1)$ , is on the line. These can be our points $1$ and $2$ .

$m = \frac{-1 -(-1)}{2 -(-4)} \\ m = \frac{-1 +1}{2 +4} \\ m = \frac{0}{6} \\ m = 0$

In graph 10, we can see that the points, $(0,-2)$ and $(2,-1)$ , is on the line. These can be our points $1$ and $2$ .

$m = \frac{-1 -(-2)}{2 -0} \\ m = \frac{-1 +2}{2 -0} \\ m = \frac{1}{2} \\$

6 0

3 years ago

There are 162 magazines and books in a library. There are 54 more books

Strike441 [17]

Answer:

108 books.

Step-by-step explanation:

Let the number of magazines = m

Let the number of books = b

Given the following data;

Total number of m & b = 162

Translating the word problem into an algebraic equation, we have;

$b = m + 54$ ......equation 1

$m + b = 162$ ......equation 2

Substituting equation "1" into equation "2" we have;

$m + m + 54 = 162$

$2m + 54 = 162$

$2m = 162 - 54$

$2m = 108$

$m = \frac {108}{2}$

m = 54

Now to find the number of books;

$b = m + 54$

Substituting the value of "m" into the equation, we have;

$b = 54 + 54$

b = 108

Therefore, the total number of books in the library is 108 books.

7 0

3 years ago

Please help with my math i took a picture of it

Fynjy0 [20]

Answer:

40°

Step-by-step explanation:

Supplementary angles add up to 180°. Complementary angles add up to 90°.

m∠1 + m∠2 = 180°

115° + m∠2 = 180°

m∠2 = 65°

m∠2 + m∠3 = 90°

65° + m∠3 = 90°

m∠3 = 25°

m∠2 − m∠3 = 65° − 25° = 40°

6 0

3 years ago

Please help with geometry

prohojiy [21]

Step-by-step explanation:

the answer is:

x=180-90-70=20°

5 0

3 years ago

A study of 250 households in Cedar Bluff showed that a household produced an average of 4 pounds of garbage per day. What is the

Juli2301 [7.4K]

Answer:

Step-by-step explanation:

Given that a study of 250 households in Cedar Bluff showed that a household produced an average of 4 pounds of garbage per day.

Here a study of only 250 were made to assess about the entire households in Cedar Bluff

Hence the population of interest in this study is the entire households in Cedar Bluff.

The sample is the 250 households in Cedar Bluff which were studied

The objective was to study the sample and from that information to assess about the population.

6 0

3 years ago