3 years ago

Experimental verification of opposite side of parallelograms .

1 answer:

6 0

If you mean proof that the opposite sides of a parallelogram are equal, you draw a diagonal then prove that the 2 triangles formed are congruent.

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A ball is thrown upward with an initial velocity of 60 mph. it is thrown from a height of 5 feet. what is the maximum height it

natima [27]

Answer:

h = 61.25 m

Step-by-step explanation:

It is given that,

The initial velocity of the ball, v = 60 m/s

It is thrown from a height of 5 feet, $h_o=5\ ft$

We need to find the maximum height it reaches. The height reached by the projectile as a function of time t is given by :

$h=-16t^2+vt+h_0$

Putting all the values,

$h=-16t^2+60t+5$ .....(1)

For maximum height, put

$\dfrac{dh}{dt}=0\\\\\dfrac{-16t^2+60t+5}{dt}=0\\\\-32t+60=0\\\\t=\dfrac{-60}{-32}\\\\t=1.875\ s$

Put t = 1.875 in equation (1)

$h=-16(1.875)^2+60(1.875)+5\\\\h=61.25\ m$

So, the maximum height reached by the ball is 61.25 m.

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3 years ago

LeRoy cut a length of string into 30

sukhopar [10]

Answer:

390 inches long

Step-by-step explanation:

The string = x

$\frac{x}{30} = 13$

$30 (\frac{x}{30} ) = 30(13)$

x = 390 inches

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2 years ago

Find the two square roots of 121 (write answer using the word “and” to separate them)

Aneli [31]

Answer:

11 and 11

Step-by-step explanation:

brainliest^:)

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3 years ago

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Factorise a squared - b squared

marusya05 [52]

(a-b)(a+b) because when you reverse the sum you do axa and ax-b xx

5 0

3 years ago

Find the surface area of a rectangular prism with a height of 6 inches, a width of 7 inches, and a length of 13 inches. A) 338 i

oee [108]

Answer:

422 in.2

Step-by-step explanation:

Substitute the measurements of the rectangular prism into the formula SA = 2(lw) + 2 (lw) + 2(lh): 2(13)(7) + 2(6)(7) + 2(13)(6) = 422 in2.

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3 years ago