1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
USPshnik [31]
3 years ago
5

NERDS HELP ME !!!!!!!!

Mathematics
2 answers:
Ivahew [28]3 years ago
5 0

Answer:

63 it's the closest

Step-by-step explanation:

Rus_ich [418]3 years ago
4 0

Answer:

the answer is 21 π

Step-by-step explanation:

V= \pi r^{2} \frac{h}{3}

r=3

h=7

7/3 x 3^2 = 21

=21π

You might be interested in
Write the number 33×10^-3 in scientific notation​
cluponka [151]

Answer:

Step-by-step explanation:

33×10^-3 is equivalent to 33/1000, or 0.033.

This, in turn, is equivalent to 3.3×10^(-2) (which is in scientific notation)

4 0
3 years ago
How do i solve this radical expression? It has to do with factoring i know that.
MAVERICK [17]
Firstly it's not a radical expression.

You can factorize the numerator x²+12x+36 = (x+6)²

Factorize the denominator 12x+72 = 12(x+6)


=(x+6)² / 12(x+6) , simplify. Answer = (x+6)/12
5 0
3 years ago
What the answer is? Please answer fast!
gulaghasi [49]

Answer:

A

Step-by-step explanation:

it includes all the combinations.

4 0
2 years ago
This is finding exact values of sin theta/2 and tan theta/2. I’m really confused and now don’t have a clue on how to do this, pl
Lostsunrise [7]

First,

tan(<em>θ</em>) = sin(<em>θ</em>) / cos(<em>θ</em>)

and given that 90° < <em>θ </em>< 180°, meaning <em>θ</em> lies in the second quadrant, we know that cos(<em>θ</em>) < 0. (We also then know the sign of sin(<em>θ</em>), but that won't be important.)

Dividing each part of the inequality by 2 tells us that 45° < <em>θ</em>/2 < 90°, so the half-angle falls in the first quadrant, which means both cos(<em>θ</em>/2) > 0 and sin(<em>θ</em>/2) > 0.

Now recall the half-angle identities,

cos²(<em>θ</em>/2) = (1 + cos(<em>θ</em>)) / 2

sin²(<em>θ</em>/2) = (1 - cos(<em>θ</em>)) / 2

and taking the positive square roots, we have

cos(<em>θ</em>/2) = √[(1 + cos(<em>θ</em>)) / 2]

sin(<em>θ</em>/2) = √[(1 - cos(<em>θ</em>)) / 2]

Then

tan(<em>θ</em>/2) = sin(<em>θ</em>/2) / cos(<em>θ</em>/2) = √[(1 - cos(<em>θ</em>)) / (1 + cos(<em>θ</em>))]

Notice how we don't need sin(<em>θ</em>) ?

Now, recall the Pythagorean identity:

cos²(<em>θ</em>) + sin²(<em>θ</em>) = 1

Dividing both sides by cos²(<em>θ</em>) gives

1 + tan²(<em>θ</em>) = 1/cos²(<em>θ</em>)

We know cos(<em>θ</em>) is negative, so solve for cos²(<em>θ</em>) and take the negative square root.

cos²(<em>θ</em>) = 1/(1 + tan²(<em>θ</em>))

cos(<em>θ</em>) = - 1/√[1 + tan²(<em>θ</em>)]

Plug in tan(<em>θ</em>) = - 12/5 and solve for cos(<em>θ</em>) :

cos(<em>θ</em>) = - 1/√[1 + (-12/5)²] = - 5/13

Finally, solve for sin(<em>θ</em>/2) and tan(<em>θ</em>/2) :

sin(<em>θ</em>/2) = √[(1 - (- 5/13)) / 2] = 3/√(13)

tan(<em>θ</em>/2) = √[(1 - (- 5/13)) / (1 + (- 5/13))] = 3/2

3 0
2 years ago
Drag and drop the symbols to enter the equation of the circle in standard form with center and radius given. Center (-8, -3), ra
lord [1]
The standard equation of a circle is given by:
(x-a)²+(y-b)²=r²
where:
(a,b) is the center and r is the radius.
Given that (a,b) is (-8,-3) and r=2 units
then the equation of the circle will be:
(x-(-8))²+(y-(-3))²=2²
simplifying the above we get:
(x+8)²+(y+3)²=4
5 0
3 years ago
Other questions:
  • What property is illustrated? I<br> 3/4 (1) = 3/4
    12·1 answer
  • 7) The area of rectangle A is twice the area of square B. Find x.<br> 12
    7·1 answer
  • Members of a baseball team raised $967.50 to go to a tournament. They rented a bus for $450.00 and budgeted $28.75 per player fo
    10·1 answer
  • Solve the equation: 3(x−3) + 2x= −49
    14·1 answer
  • Solve n^2+16n=17 by completing the square ​
    6·1 answer
  • What is the equation of the hyperbola ?
    8·1 answer
  • Check my page pleaseeee i need help ASAP
    8·1 answer
  • Find the equation of a line parallel to y - 5x = 10 that passes through the point (5,1)
    11·2 answers
  • Given: CD is an altitude of triangle ABC.<br> Prove: a^2 = b^2 +c^2 = 2bccos A
    13·1 answer
  • Zahra is anxious to save money on her utility bills and knows that changing the temperature of the water when she does laundry c
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!