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3 years ago

What's the slope? (-19, 12), (-9,1)

Mathematics

2 answers:

Digiron [165]3 years ago

5 0

Answer:

Slope: -11/10

Step-by-step explanation:

always do y2 - y1/x2 - x1

12 - 1 / -19 + 9 = -11/10

tatyana61 [14]3 years ago

4 0

Answer: 21/-20

Why?
To find skip you do the difference of Y/ the difference of x. So...
12+9/ -19-1 = 21/-20

Hope this helps :D

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the angle of elevation of the top of a tower from a point 42m away from the base on level ground is 36 find the height of the to

Tcecarenko [31]

Answer:

30.51 meters

Step-by-step explanation:

Given that:

The distance from the point to the base of the tower = 42 m, the angle of elevation = 36°.

According to sine rule if a,b,c are the sides of a triangle and its respective opposite angles are A, B, C. Therefore:

$\frac{a}{sin(A)} =\frac{b}{sin(B)}=\frac{c}{sin(C)}$

Let the height of the tower be a and the angle opposite the height be A = angle of elevation = 36°

Also let the distance from the point to the base of the tower be b = 42 m, and the angle opposite the base of the tower be B

To find B, since the angle between the height of the tower and the base is 90°, we use:

B + 36° + 90° = 180° (sum of angles in a triangle)

B + 126 = 180

B = 180 - 126

B = 54°

Therefore using sine rule:

$\frac{a}{sin(A)} =\frac{b}{sin(B)}\\\\\frac{a}{sin(36)}=\frac{42}{sin(54)}\\\\ a=\frac{42*sin(36)}{sin(54)}\\ \\a=30.51\ meters$

The height of the tower is 30.51 meters

6 0

3 years ago

A $7000 motorcylce depreciates at 10% each year. Which value would represent the initial amount of the exponential function that

gayaneshka [121]

The "initial amount" is $7,000, the price of the motorcycle when new.

The exponential function in question is V = $7000(1-0.1)^n, where n is the number of years elapsed since the purchase of the cycle.

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4 years ago

a line has the equation 4y=3x-8 which is the equation of a line parallel to this line that has a y intercpt of 4?

Nikolay [14]

Answer:

y=34x+2.625

y=34x+2.75

y=−34x+1.25

y=34x+1.25

y=−34x+2.75

Correct answer:

y=−34x+2.75

Step-by-step explanation:

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3 years ago

A bag has 6 yellow marbles and 6 brown marbles. Half of the brown marbles are made of glass. A marble is selected at random from

AysviL [449]

Total = 12 marbles
6 brown marbles but h<span>alf of the brown marbles are made of glass
so brown and made of glass = 3
</span><span>probability that it is a brown, glass marble = 3/12 = 1/4

answer
1/4</span>

4 0

3 years ago

Consider the line y=-3/5x+3

liberstina [14]

Answer:

its 5,0

Step-by-step explanation:

i took the test

6 0

3 years ago