3 years ago

Find the positive solution of x when: 25 = 4/x²

1 answer:

7 0

1) Multiply both sides by x²

$25 {x}^{2} \: = \: 4$

2) Divide both sides by 25

${x}^{2} \: = \: \frac{4}{25}$

3) Square root both sides

$x \: = \: \frac{2}{5}$

Viola!

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Find the exact angular velocity in radians per hour wind W= 4.1 rpm

nataly862011 [7]

Answer:

1545.66 rad/h

Step-by-step explanation:

We need to find the angular velocity in rad/hour when wind is moving with a speed of 4.1 rpm.

We know that,

1 revolution = 2π rad

1 hour = 60 minute

So,

$4.1\ rmm = 4.1\times \dfrac{2\pi }{(\dfrac{1}{60})}\ rad/h\\\\=1545.66\ rad/h$

So, the required angular velocity is 1545.66 rad/h.

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3 years ago

You have a map of an area in France. The scale used is 2cm:8km. You want to ride to a national park. The park is shown on the ma

slega [8]

Divide the distance on the map by 2 to get the number of 8km segments there are, then multiply that by 8km for total distance.

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3 years ago

You are the treasurer for a local charity. At the beginning of the month the balance was $820.64. The charity received donations

djverab [1.8K]

Beginning Balance: 820.64
Add:
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Deduct:
electric bill: 40.64
postage bill: 12.75
rental : 445.00 <u> (498.39)</u>
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The balance at the end of the month is $902.25

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3 years ago

Rlly need help on this ill give brainliest :)

Maksim231197 [3]

Answer:

3^15/5^16

Step-by-step explanation:

(3^3 x 3^6 x 5^-4) / (3^-6 x 5^12)

= (3^3 x 3^6 x 3^6) / (5^12 x 5^4)

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2 years ago

Susan was given the math problem x - 4 + -11. She found the answer to be 7. Critique her answer. Is she correct? How do you know

Dmitrij [34]

Answer:

she was wrong

Step-by-step explanation:

x-4-11 = 0 (4+-1=4-1)

x=15

hence she was wrong

3 0

3 years ago

Read 2 more answers