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stealth61 [152]

3 years ago

14

Which of the following correctly describes the variation in the equation r=d/t?

2 answers:

maw [93]3 years ago

6 0

Answer number 3 is correct.

charle [14.2K]3 years ago

6 0

Answer:

Option 3rd is the right choice.

Step-by-step explanation:

Which of the following correctly describes the variation in the equation r=d/t?

Option 3rd is correct - r varies inversely with t and jointly with d

Inversely related means if the value of one entity increases, the value of second decreases and vice versa.

Here, r = d*1/t

So, we can say r = 1/t, this means r is in an inverse relation to t and direct relation to d.

So, option 3rd is the correct choice.

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P → q is false and p is true.

arlik [135]

Answer:

False??????..........

5 0

3 years ago

The radius of a cylinder is 3 cm and the height is 6 cm.

Alborosie

Answer:

B. 54π

Step-by-step explanation:

Surface area of cylinder = 2πrh + 2πr²

Radius = 3 cm

Height = 6 cm

Plug in the values

Surface area of the cylinder = 2*π*3*6 + 2*π*3²

Surface area = 36π + 18π

Surface area = 54π

3 0

3 years ago

The angle of elevation of the top of the tower from a point on the ground is 30 degree, If the height of the tower is 40 space m

kiruha [24]

Answer:

$40\sqrt3\ m$

Step-by-step explanation:

Given that,

The height of the tower, h = 40 m

The angle of elevation is 30°

We need to find the distance between the tower and the point. Let the distance is x. Using trigonometry,

$\tan(30)=\dfrac{h}{x}\\\\\dfrac{1}{\sqrt3}=\dfrac{40}{x}\\\\x=40\sqrt3\ m$

So, the distance between the tower and the point is equal to $40\sqrt3\ m$ .

7 0

3 years ago

(a) use the pythagorean theorem to determine the length of the unknown side of the triangle, (b) determine the perimeter of the

Kisachek [45]

Answer:

(A) 40 km

(B) 90 km

(C) 180 km²

Step-by-step explanation:

To find the missing side of this triangle, let's use the Pythagorean theorem.

$a^2+b^2=c^2$ , assuming that a and b are legs, and c is the hypotenuse.

Assuming the 9km side is a, we need to find the value of b, so we can substitute into the equation.

$9^2+b^2=41^2\\81+b^2=1681\\b^2=1681-81\\b^2=1600\\\\b = \sqrt{1600} \\b=40$

So, the length of the missing side is 40. Now that we know this piece of information, we can find the perimeter and area of the triangle.

The perimeter is all the sides added together, so $41+9+40 = 90$ km is the perimeter.

The area are the two legs multiplied divided by 2.

So,

$\frac{9\cdot40}{2} \\\\\frac{360}{2}\\\\180$

So the area of this triangle is 180 cm²

I hope this helped!

8 0

3 years ago

What percent of all voters are registered Democrats? Round your answer to the nearest tenth of a percent. Type a numerical answe

Kamila [148]

Answer:

45%

Step-by-step explanation:

900/2000 x 100% = 45%

Hope this helps :)

8 0

3 years ago