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GenaCL600 [577]
3 years ago
5

Solve the equation for x. x/3 = (2x + 3)/7A. B. 2 C. 3 D. 3/7 E. -3

Mathematics
1 answer:
sergeinik [125]3 years ago
3 0

Answer:

<h2>x = 9</h2>

Step-by-step explanation:

\frac{x}{3}  =  \frac{2x + 3}{7}

<u>Cross multiply</u>

That's

7x = 3( 2x + 3)

Multiply the terms

That's

7x = 6x + 9

<u>Subtract 6x from both sides</u>

We have

7x - 6x = 6x - 6x + 9

Simplify

We have the final answer as

<h3>x = 9</h3>

Hope this helps you

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Can someone help me plz ​
Wewaii [24]

Answer:

9442 lb

Step-by-step explanation:

First find the volume of the tank.  This being a sphere, the volume is V =(4/3)π·r³.  Here the diameter is 17 ft, so the radius, r, is half that:  8.5 ft.

Then the volume of the sphere is V = (4/3)π·(8.5 ft)³, and half that (the volume of the hemisphere) is (2/3)π·72.25 ft³.

Water weighs 62.4 lb/ft³.  To find the weight of the water in the full tank, multiply the tank volume by this weight density 62.4 lb/ft³:

×

(2/3)π·72.25 ft³ · 62.4 lb/ft³ ≈ 9442 lb

4 0
3 years ago
Scientists use the formula to calculate the speed (s) 9.8d of the tsunami (in meters per second ) based on the depth (d) of the
prohojiy [21]
Speed of tsunami = sqrt (9.8d) m/s where d is the depth of the ocean.

Given speed of tsunami to be 320 m/s, depth of the ocean is calculated as follows:

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To nearest meter, d=10449 m
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3 years ago
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Maksim231197 [3]

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What percent of information is in standard deviation ?
rodikova [14]

Answer:

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Step-by-step explanation:

6 0
3 years ago
What are the next three terms in the sequence? 2, -3, -6, 18, … -108, -1,944, -209,952 -108, 1,944, -209,952 -108, -1,944, 209,9
Semenov [28]

Answer: -108, -1,944, 209,952

Step-by-step explanation:

The the next term in this sequence is being determined by multiplying the last two numbers of the sequence.

Next three terms are;

= -6 * 18

= -108

= 18 * -108

= -1,944

= -108 * -1,944

= 209,952

3 0
3 years ago
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