3 years ago

What is the length of AB? Round your answer to the nearest

1 answer:

const2013 [10]3 years ago

8 0

23’3 because I went over the test and I got it correct I’m pretty sure (sorry if I’m wrong I just went with the internet :()

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A sphere has a diameter of 14 units. What is the volume of the sphere in cubic units? If a cylinder has the same radius as the s

lesya692 [45]

Answer:

Step-by-step explanation:

r = 14/2 = 7units

$Volume of sphere=\frac{4}{3}*\pi*r^{3}\\\\=\frac{4}{3}*3.14*7*7*7\\\\=1436.03cubic units\\\\Volume of cylinder=\pi*r^{2}*h\\\\=3.14*7*7*14\\\\=2154.04 cubic units$

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3 years ago

Verify the identity. cotangent x equals StartFraction 1 plus cosine 2 x Over sine 2 x EndFractioncot x= 1+cos2x sin2x Use the ap

lutik1710 [3]

Answer with Step-by-step explanation:

We are given that

RHS

$\frac{1+Cos2x}{Sin2x}$

We have to verify the identity.

We know that

$1+Cos2x=2Cos^2 x$

$Sin2x=2SinxCos x$

Using the formula

$\frac{2Cos^2x}{2SinxCosx}$

$\frac{Cosx}{Sinx}$

$Cot x$

By using the formula

$Cotx=\frac{Cosx}{Sinx}$

LHS=RHS

Hence, verified

6 0

3 years ago

In Nathan’s baseball card collection, 58% of cards are players from the National League. He has 702 baseball cards. About how ma

Bogdan [553]

Nathan has exactly 407 cards from national league however since you have to estimate with that rate the answer is 400.

702 (Total Cards) × 0.58 = 407. 16
407.16 (Rounded to 100) = 400

702 × 0.58 = 407.16 = 400

If you can please drop a follow it really makes my day anyways thanks~!

5 0

3 years ago

5+[30-(8-1)² ÷ 11-2²

Xelga [282]

Answer:

26.5454545455

Step-by-step explanation:

6 0

2 years ago

Factor each trinomial completely.<br> 4x^2 - 25b^2 and x^2 - 81

GenaCL600 [577]

Step-by-step explanation:

4x2 - 25b2

We can solve it by the squares so

(2x - 5b) (2x + 5b)

2) x2 - 81

The same case is here so

(x - 9) (x + 9)

8 0

3 years ago