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ollegr [7]
4 years ago
10

If one-sixth of a number plus one-third returns two-thirds of that number What is the number

Mathematics
1 answer:
Solnce55 [7]4 years ago
7 0

Answer:

x= \frac{2}{3}

Step-by-step explanation:

Let the number be x

Given

\frac{1}{6}x + \frac{1}{3} = \frac{2}{3}x

Required

Find x

\frac{1}{6}x + \frac{1}{3} = \frac{2}{3}x

Collect Like Terms

\frac{1}{6}x -  \frac{2}{3}x = - \frac{1}{3}

Take LCM

\frac{1 - 4}{6}x = \frac{-1}{3}

\frac{- 3}{6}x = \frac{-1}{3}

Multiply both sides by 6

6 * \frac{- 3}{6}x = \frac{-1}{3} * 6

-3x= -2

Divide both sides by -3

\frac{-3x}{-3}= \frac{-2}{-3}

x= \frac{2}{3}

Hence, the number is \frac{2}{3}

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standing on the street, the top of a building has an angle of elevation of 20 degrees. You walk 300 feet directly toward the bui
densk [106]

Answer:

The value of height of the building  h = 509.2 feet

Step-by-step explanation:

From the Δ A B C

\tan 25 = \frac{h}{y}

⇒ h = y \tan 25°  ------- (1)

From Δ A B D

\tan 20 = \frac{h}{y + 300}

⇒ h = ( y + 300 ) \tan20° ------- (2)

Equation 1 = Equation 2

⇒ y \tan 25° = ( y + 300 ) \tan20°

⇒ 0.46 y = 0.36 y + 109.2

⇒ 0.1 y = 109.2

⇒ y = 1092 feet

Put this value of y in equation ( 1 ) we get,

⇒ h = 1092 × tan 25°

⇒ h = 509.2 feet

This is the value of height of the building.

8 0
3 years ago
What is constant of proportionality? explain as if u were to a 5 year old
Y_Kistochka [10]
<span><span>If one variable is always the product of the other and a constant, the two are said to be directly proportional. <span>x and y</span> are directly proportional if the ratio <span>y/x</span> is constant.</span><span>If the product of the two variables is always a constant, the two are said to be inversely proportional. <span>x and y</span> are inversely proportional if the product xy is constant.</span></span>In mathematics<span>, two variables are </span>proportional<span> if a change in one is always accompanied by a change in the other, and if the changes are always related by use of a constant multiplier. The constant is called the </span>coefficient<span> of proportionality or </span>proportionality constant<span>.

</span>
7 0
3 years ago
Math question. Please hurry. 15 points! Give explanation if you have any. Thanks
SSSSS [86.1K]

Answer:

The answer is 17.

Step-by-step explanation:

The answer is 17 because 17-3 = 14 and 14 times 3 = 42

3 0
3 years ago
Read 2 more answers
Find the sample variance and standard deviation of 18, 16, 5, 10, 12
Vesnalui [34]
The correct answer would be 5.
5 0
3 years ago
put the following values in ascending order 4 2/7, 31/7, 3 5/7, 29/7, 27/7, the above are fractions you will get brainliest
Pavlova-9 [17]

Answer:

2/7 , 5/7 , 3 , 27/7 , 4 , 29/7 , 31/7

Step-by-step explanation:

2/7= 0.3

5/7= 0.7

3

27/7= 3.9

4

29/7= 4.1

31/7= 4.4

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4 0
3 years ago
Read 2 more answers
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