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babymother [125]
3 years ago
11

Need help badly geometry question

Mathematics
2 answers:
labwork [276]3 years ago
7 0

Answer:

Step-by-step explanation:

sin 67 = x/21

x = 21 sin 67

answer is A

Irina-Kira [14]3 years ago
5 0
Answer: A


STEP BY STEP:
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A clock shows a time of 3:20.what type of angle is this
fredd [130]
Hour hand: \frac{35\pi}{18}

Minute hand: \frac{11\pi}{6}*\frac{3}{3}=\frac{33\pi}{18}

\frac{35\pi}{18}-\frac{33\pi}{18}\\\frac{2\pi}{18}\\\frac{\pi}{9}

Acute angle
Right angle =\frac{\pi}{2}
Obtuse angle >\frac{\pi}{2}
Straight angle =\pi

0

Acute angle.
3 0
4 years ago
A rectangular prism has a width of 16 inches and a length of 10 inches. The volume of the rectangular prism is decreasing at a r
frosja888 [35]

Answer:

-3.47 inches per minute

Step-by-step explanation:

Let the height be 'h' for any time 't'.

Given:

Length of the prism (L) = 10 in

Width of the prism (w) = 16 in

The rate of change of volume of prism is, \frac{dV}{dt}=-555\ in^3/min (The negative sign implies the volume decreases with time.)

Now, rate of change of height of prism = \frac{dh}{dt}=?

Length and width remains constant.

Now, we know that, volume of a rectangular prism is given as:

Volume = Length × width × Height

V=Lwh\\\\V=10\times 16\times h\\\\V=160h

Now, differentiating both sides with respect to time 't', we get:

\frac{dV}{dt}=\frac{d}{dt}(160h)

Plug in the given values and solve for \frac{dh}{dt}. This gives,

-555=160\times \frac{dh}{dt}\\\\\frac{dh}{dt}=\frac{-555}{160}\\\\\frac{dh}{dt}=-3.47\ in/min

The negative sign implies the height decreases with time.

Therefore, the the rate of change, in inches per minute, of the height when the height is 3 inches is -3.47 inches per minute.

5 0
3 years ago
Emily and her twin sister Erica were each given $500 for their birthday. Emily deposits her money in an account that pays 4.75%
Iteru [2.4K]

Answer:

B $45.26

Step-by-step explanation:

After 10 years

Emily will have 500 * 1.045^10 = $795.26

Erica will have 500 + 10*0.05*500 = 500 * 1.5 = 750$

Emily will have $45.26 more.

4 0
3 years ago
It takes Camden 45 minutes to complete 1/5 of his art project. How many hours will it take him to complete the whole project if
umka2103 [35]

Answer:

3.75

Step-by-step explanation:

6 0
3 years ago
The factorial 4! is equal to _______.<br><br> This is about permutations btw.
bekas [8.4K]

Answer:

24

Step-by-step explanation:

factorial(4) = 4*3*2*1

factorial(4) = 24

8 0
4 years ago
Read 2 more answers
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