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tatiyna
3 years ago
12

If a line goes through points (-2,9) and (0,3), what is the slope?

Mathematics
1 answer:
ASHA 777 [7]3 years ago
8 0

Answer:

B. -1/3

Step-by-step explanation:

take how far the x's are and you get two to the left (-2) and do the same for the y's and you get six going up (6). if you put that into a fraction and get -2/6 and simplify it you get -1/3

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Sara is a drummer in her school is marching band she wants to make a geometrically similar model of a snare drum for her stuffed
strojnjashka [21]

Answer:

Option B.

Step-by-step explanation:

Let the radius of the snare drum = r

and radius of the model = R

Ratio of the dimensions of the snare drum and the model = 1 : 4

So, \frac{r}{R}=\frac{1}{4}

Now as per question, dimensions of the snare drum is multiplied by a scale factor of \frac{1}{2}

Radius of the snare drum = \frac{r}{2}

Ratio of the radius of the snare drum and cylindrical model ,

\frac{\frac{r}{2}}{R} =\frac{1}{4}

\frac{r}{2R}=\frac{1}{4}

\frac{r}{R}=\frac{1}{2}

Therefore, the cylinder with Sara's dimensions will be geometrically similar but the scale factor will be 1 : 2

Option B is the answer.

6 0
3 years ago
Will makr brainliest to the first answr correct, 5 star, and thanks.
Mice21 [21]

Answer:

117°

Step-by-step explanation:

The angle is obtuse, so thus greater than 90°. And the angles of a triangle must always add up to 180°, so 31 + 32 = 63, then 180 - 63 = 117°

3 0
2 years ago
Read 2 more answers
The latter is leaning against the building so that the distance from the ground to the top of the ladder is 9 feet less than the
Rama09 [41]

Complete question :

The latter is leaning against the building so that the distance from the ground to the top of the ladder is 9 feet less than the length of the ladder finally put the ladder in the distance from the bottom of the ladder to the building 15 feet. Find length of the ladder.

Answer:

17

Step-by-step explanation:

From Pythagoras :

Hypotenus = sqrt(opposite² + adjacent²)

From the diagram

l = sqrt((l-9)² + 15²)

l² = (l² - 18x + 81 + 225)

Square both sides

l² = l² - 18x + 306

l² - l² = 306 - 18x

18l = 306

l = 306/18

l = 17

3 0
2 years ago
Kelsey keeps track of how much money she makes each time she babysits. For the last 10 jobs she made:
Alex777 [14]

Answer:

Mean = sum of all elements/number of elements

          = (7.5 + 10.5 + 5 + 4.5 + 3.5 + 7.5 + 4 + 10 + 7.5 + 5)/10

          = 6.5

=> Option C is correct

Hope this helps!

:)

8 0
3 years ago
Tim Has M Dollars. Rebecca has $6 less than 1/10 Times The Number Of Dollars That Tim Has. Which Expression represents the total
Mrac [35]
M = Tim's dollar amount
R = Rebecca's dollar amount
MR = Tim and Rebecca's dollars together

R = (M x 1/10) - 6

MR = M + ((M x 1/10) - 6)

MR = 70 + ((70 x 1/10) - 6)

MR = 70 + (7 - 6)

MR = 70 + 1

MR = 71




8 0
3 years ago
Read 2 more answers
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