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3 years ago

Which expression is equivalent to am = a"? (4 points)

Mathematics

1 answer:

Lerok [7]3 years ago

5 0

Answer:

<h3>Sseecrvjk)4jkbfwglhekugwflogejiefig</h3>

Step-by-step explanation:

I fchik7elyeddr

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What is the value of x when 3x=54? <br> A) x=18<br> B) x=51<br> C) x=57<br> D) x=162

Inessa05 [86]

The answer is a. x = 18 :)

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3 years ago

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19/x=76/100 find proportion

Snezhnost [94]

Note that 76 is exactly four times 19. Therefore, your answer is 100/4, which is equivalent to 25.

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3 years ago

A belt runs a pulley of radius 8 inches at 60 revolutions per minute. a) Find the angular speed in radians per minute. b) Find t

Evgesh-ka [11]

Answer:

Part a) $120\pi\ \frac{rad}{min}$

Part b) $960\pi\ \frac{in}{min}$

Step-by-step explanation:

we have

60 rev/min

Part a) Find the angular speed in radians per minute

we know that

One revolution represent 2π radians (complete circle)

$1\ rev=2\pi \ rad$

To convert rev to rad, multiply by 2π

$60\ \frac{rev}{min}=60(2\pi)=120\pi\ \frac{rad}{min}$

Part b) Find the linear speed in inches per minute

we know that

The circumference of a circle is equal to

$C=2\pi r$

we have

$r=8\ in$ ----> given problem

substitute

$C=2\pi(8)$

$C=16\pi\ in$

Remember that

One revolution subtends a length equal to the circumference of the circle

$1\ rev=16\pi\ in$

To convert rev to in, multiply by 16π

$60\ \frac{rev}{min}=60(16\pi)=960\pi\ \frac{in}{min}$

8 0

3 years ago

What PEMDAS is this<br><br> (4+5)78-49

4vir4ik [10]

Step #1 - P (4+5)
step #2 - E no exponents
step #3 - (9)78
step #4 - no divison
step #4 - no addition (outside of parenthesis)
step #5 - 702 - 49 = 653
hope this helped :)

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3 years ago

Read 2 more answers

Can anyone help me with this I'm having trouble understanding the questions.

Gelneren [198K]

Answer: x= 4,0

I am only able to answer the first one, but I hope I got the first answer right and I hope you have a great day.

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3 years ago