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stira [4]
3 years ago
15

If 1/a, 1/b, 1/c are in Arithmetic Progress, show that 2ac/a+c.​

Mathematics
1 answer:
Iteru [2.4K]3 years ago
6 0
  1. 1/b-1/a = 1/c-1/b [ since they are in arithmetic progress]
  2. 1/b+1/b = 1/c+1/a
  3. 2/b = (a+c)/ac
  4. 2ac = b(a+c)
  5. 2ac/(a+c) =b

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A tiny but horrible alien is standing at the top of the Eiffel Tower (which is 324324324 meters tall) and threatening to destroy
DedPeter [7]

Answer:

A tiny but horrible alien is standing at the top of the Eiffel Tower (which is 324 meters tall) and threatening to destroy the city of Paris! A Men In Black agent is standing at ground level, 54 meters across the Eiffel square, aiming his laser gun at the alien. At what angle, in degrees, should the agent shoot his laser gun? Round your final answer to the nearest tenth

The agent shoot his laser gun at 80.5 degree.

Step-by-step explanation:

Given:

Height at which the horrible alien is standing = 324 m

Distance from the (tower) where the agent is = 54 m

According to the question:

Men In Black agent is aiming his laser gun to shoot the horrible alien.

Let the angle at which the agent shoot his gun be " Ф "

As from the situated depicted we can draw a right angled triangle.

Using trigonometric ratios:

tan (Ф) = opposite/ adjacent

In triangle OPQ .

The adjacent side = 54 m

The opposite side = 324 m

⇒ Plugging the values.

⇒ tan(\phi) = \frac{opposite}{hypotenuse}

⇒  tan(\phi) = \frac{324}{54}

⇒ (\phi) = tan^-^1(\frac{324}{54})

⇒ \phi=80.53

Nearest tenth it is 80.5 degrees.

So,

Men In Black must shoot the laser gun at an angle of 80.5 degrees.

7 0
3 years ago
Of the following expressions, which is equal to 6(√10)?
Inessa [10]

Answer:

sqrt(360)

Step-by-step explanation:

sqrt(360)=sqrt(36*10)=sqrt(36)*sqrt(10)=6*sqrt(10)

8 0
3 years ago
Katrina is asked to simplify the expression .
Lorico [155]
The property of distribution
8 0
3 years ago
Read 2 more answers
The function c(s) gives the number of corn ears a farmer can harvest by planting s number of seeds. Each statement below can be
aleksandr82 [10.1K]

1. c(800)=600 has same meaning as after planting 800 seeds, there will be 600 corn ears.

2. c(200) = e has the same meaning as there will be e corn ears when 200 seeds are planted.

3. c(s) = 900 has same meaning as the number of corn ears is 900 when s seeds are planted.

Step-by-step explanation:

According to given statement;

c(s) = Number of corn ears

s = Number of seeds

1. After planting 800 seeds, there will be 600 corn ears.

Here,

Number of seeds = s = 800

Number of corn ears = 600

Putting in function

c(800) = 600

c(800)=600 has same meaning as after planting 800 seeds, there will be 600 corn ears.

2. There will be e corn ears, when 200 seeds are planted.

Number of seeds = s = 200

Number of corn ears = e

Putting in function

c(200) = e

c(200) = e has the same meaning as there will be e corn ears when 200 seeds are planted.

3. The number of corn ears is 900 when s seeds are planted.

Number of seeds = s

Number of corn ears = 900

Putting in function

c(s) = 900

c(s) = 900 has same meaning as the number of corn ears is 900 when s seeds are planted.

Keywords: function, variable

Learn more about functions at:

  • brainly.com/question/12868188
  • brainly.com/question/12892285

#LearnwithBrainly

4 0
3 years ago
Helpppppp pleaseeeeeeeeee
Serjik [45]
Wait, do you want me to solve for x or for y??

For y it's,

y = - \frac{3}{2} x - 1

For x it's,

x = - \frac{2}{3} - \frac{2}{3} y
3 0
3 years ago
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