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3 years ago

While I was jogging I was able to run 5 miles in 30 minutes from this information we can determine my?

1 answer:

6 0

You can determine your speed that is Speed = (distance/Time). Mind you in this cast time should be in hour, so 30 min - 1/2 hour or 0.5 Hour

Your speed is 5/0.5 = 10 mi/hour

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Drag the ordered pairs to match the points shown on the coordinate grid.

Kobotan [32]

Answer:

A) (3, 6)

B) (2, 3)

C) (4, 2)

D) (6, 0)

4 0

3 years ago

Read 2 more answers

If sinA=√3-1/2√2,then prove that cos2A=√3/2 prove that

Ivan

Answer:

$\boxed{\sf cos2A =\dfrac{\sqrt3}{2}}$

Step-by-step explanation:

Here we are given that the value of sinA is √3-1/2√2 , and we need to prove that the value of cos2A is √3/2 .

Given :-

• $\sf\implies sinA =\dfrac{\sqrt3-1}{2\sqrt2}$

To Prove :-

• $\sf\implies cos2A =\dfrac{\sqrt3}{2}$

Proof :-

We know that ,

$\sf\implies cos2A = 1 - 2sin^2A$

Therefore , here substituting the value of sinA , we have ,

$\sf\implies cos2A = 1 - 2\bigg( \dfrac{\sqrt3-1}{2\sqrt2}\bigg)^2$

Simplify the whole square ,

$\sf\implies cos2A = 1 -2\times \dfrac{ 3 +1-2\sqrt3}{8}$

Add the numbers in numerator ,

$\sf\implies cos2A = 1-2\times \dfrac{4-2\sqrt3}{8}$

Multiply it by 2 ,

$\sf\implies cos2A = 1 - \dfrac{ 4-2\sqrt3}{4}$

Take out 2 common from the numerator ,

$\sf\implies cos2A = 1-\dfrac{2(2-\sqrt3)}{4}$

Simplify ,

$\sf\implies cos2A = 1 -\dfrac{ 2-\sqrt3}{2}$

Subtract the numbers ,

$\sf\implies cos2A = \dfrac{ 2-2+\sqrt3}{2}$

Simplify,

$\sf\implies \boxed{\pink{\sf cos2A =\dfrac{\sqrt3}{2}} }$

Hence Proved !

8 0

3 years ago

Which of the following is the best estimate of 7/8? ( Answer ASAP )

Triss [41]

Answer:

Step-by-step explanation:

just round up to nearest number and 7/8 is 0.87 so it coloser to 1 than half and the others are way to big.

6 0

3 years ago

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A boat starts in Wilmington and sails 5 miles due east and then 3 miles due south. What is the approximate shortest distance bac

GarryVolchara [31]

Answer:

I would say approximately 5.8 miles

Step-by-step explanation:

(This answer may be wrong)

7 0

3 years ago

Jennifer wants to convert 7.85 meters to centimeters but she does not have paper pencil or calculator describe a method she can

lilavasa [31]

She can move the decemal place 2 places to the right because a centimeter is 100 times smaller than a meter. so it would be 785 centimeters

8 0

4 years ago

Read 2 more answers