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3 years ago

Verify the identity sin^2(x/2)=(1-cosx)/2

Mathematics

1 answer:

horsena [70]3 years ago

5 0

Use the following identity:

cos(2x)=1-2sin^2(x)

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2/5 of the fish in Brayden's fish tank are guppies. 3/5 of the guppies are red. What fraction of the fish in Brayden's tank are

Nutka1998 [239]

Answer:

6/25 of the fish are red guppies.

Step-by-step explanation:

2/5 of the fish in Gary's fish tank are guppies.

Out of 2/5 the of the fish in Gary's fish tank 3/5 of the guppies are red.

So, The fraction of fish in Gary's tank are red guppies = 3/5 x 2/5

=6/25

Hope this helps!

4 0

2 years ago

What is the area of this tile?

forsale [732]

Answer:

area of ractangle = l *w

Step-by-step explanation:

I hope it's helpful for you

7 0

1 year ago

Read 2 more answers

Mr. Washington purchased three cell phones. Each cell phone cost one hundred fifty dollars. What is the total she paid for the c

Kamila [148]

Answer:

The answer is $450

Step-by-step explanation:

You need to do 150+150+150=450

150x3=450

7 0

2 years ago

The volume of a right circular cone that has a height of 13 m and a base with a diameter of 3.4 m. Round your answer to the near

Mamont248 [21]

Answer:

The volume of right circular cone having height = $13 \ m$ and Diameter = $3.4 \ m$ is $39.4\ cubic\ meter$ .

Step-by-step explanation:

Diagram of the given scenario is shown below.

Given that

Height of a right circular cone is $13 \ m$ .

Diameter of the right circular cone is $3.4 \ m$ .

To find: The volume of a right circular cone.

So, From the question,

$Height = \ 13 \ m\\diameter = 3.4\ m$

$Radius = \frac{diameter}{2}= \frac{3.4}{2}$

⇒ $Radius = 1.7\ m$

Now

Volume of right circular cone = $\frac{1}{3}\pi r^{2}h$

$=\frac{1}{3}\times\frac{22}{7} \times (1.7)^{2}\times 13$

= $\frac{826.54}{21}$

$= 39.4\ cubic\ meter$ .

Therefore,

The volume of right circular cone having height = $13 \ m$ and Diameter = $3.4 \ m$ is $39.4\ cubic\ meter$ .

8 0

2 years ago

What is the answer to x/5+6=36

Lapatulllka [165]

Okay, So We Need To First Look At This:
x/5 + 6 = 36.
So, We Need To Solve.
First, Subtract 6.
x/5 = 36 - 6
36 - 6 = 30
x/5 = 30
Now, Multiply.
x = 30 * 5
30 * 5 = 150
So:
X = 150

5 0

3 years ago

Read 2 more answers