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sdas [7]
3 years ago
13

What is the common ratio of the sequence -360, 120, -40, 13.33,...?

Mathematics
1 answer:
iogann1982 [59]3 years ago
3 0
-360 * -1/3=120
120 * -1/3=-40
the numbers are being multiplied with with -1/3 so cr= -1/2

-1/3


Mark brainliest please
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The equations given are in standard form. Put each equation in slope-intercept form. State the slope and the
rusak2 [61]

Answer:

3. \displaystyle y = \frac{2}{5}x + 1\frac{2}{5}

2. \displaystyle y = -\frac{5}{7}x + 2

1. \displaystyle y = -2x + 4

Step-by-step explanation:

3. 2x - 5y = −7

- 2x - 2x

__________

\displaystyle \frac{-5y}{-5} = \frac{-2x - 7}{-5} \\ \\ y = \frac{2}{5}x + 1\frac{2}{5}

2. 5x + 7y = 14

- 5x - 5x

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\displaystyle \frac{7y}{7} = \frac{-5x + 14}{7} \\ \\ y = -\frac{5}{7}x + 2

1. 6x + 3y = 12

- 6x - 6x

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\displaystyle \frac{3y}{3} = \frac{-6x + 12}{3} \\ \\ y = -2x + 4

I am joyous to assist you anytime.

8 0
3 years ago
The angle of elevation to the top of a 15-story skyscraper is measured to be 4from a point on the ground 2,500 feet from the bui
alexandr1967 [171]

The point of observation is 2500 m away from the foot of the building.

The angle of elevation is 4°.

We need to find the height 'h' of the building.

With respect to 4°,

2500 is the adjacent side.

'h' is the opposite side.

The trigonometric ratio associating opposite & adjacent is tan.

We have

tan\theta =\frac{opposite}{adjacent}

tan4^{o}=\frac{h}{2500}

Cross multiplying we get

h = 2500 tan4°

h= 174.82 m

Option B) is the right answer.


3 0
4 years ago
Two airplanes are flying to the same airport. Their positions are shown in the graph. Write a system of linear equations that re
wariber [46]

Answer:

Airplane #1 equation: y=5/13x+42/13

Airplane #2 equation: y=1/3x+14

Step-by-step explanation:

So to find the slope of each airplane, you use the formula y2-y1/x2-x1. That means, for airplane#1 the equation will be 9-4/15-2. Simplify this and get 5/13. Then, for airplane#2, the equation will be 12-9/6-15. Simplify this and get 3/-9 and divide each side by 3 to get 1/-3 or -1/3. Next, use point slope formula to find the system of linear equations. Point slope formula is y-y1=m(x-x1). M is the slope. Use any point from the line. In this case, I will use (2,4). Tat means the first airplane's equation would be y-4=5/13(x-2). Then y-4=5/13x-10/13. Then, convert four into a fraction with a denominator of 13. This means, you have to multiply 4 by 13 to get 52/13. Add 52/13 to -10/13 to get 42/13. That means the first equation will be y=5/13x+42/13. The second equation point will be (6,12). This means the equation will be y-12=-1/3(x-6). Simplify this to get y-12=-1/3x+2. Simplify this to get y=1/3x+14. Therefore, Airplane#1 equation will be y=5/13x+42/13 and airplane #2 equation will be  y=1/3x+14.

Hope this helps

6 0
3 years ago
2 3/5 ×5/6 = what does it equel
wolverine [178]
Your answer is 2 and 1/6

6 0
3 years ago
Help me with this please
bekas [8.4K]

Answer:

f(-5) = 4(-5) + 1 = -20 + 1 = -19

f(-1) = 4(-1) + 1 = -4 + 1 = -3

f(2) = 4(2) + 1 = 8 + 1 = 9

f(3) = 4(3) + 1 = 12 + 1 = 13

f(5) = 4(5) + 1 = 20 + 1 = 21

7 0
3 years ago
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