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I am Lyosha [343]
3 years ago
11

2/3x - 1/9x + 5 = 20 what is x ?

Mathematics
2 answers:
Gre4nikov [31]3 years ago
6 0

Answer:

x=27

Step-by-step explanation:

solve for x by simplifying both sides of the equation then isolating the variable

Triss [41]3 years ago
6 0

Answer:

x=27

Step-by-step explanation:

2/3x-1/9x+5=20 (Simplify)

5/9x+5=20 (Subtract 5 from both sides)

5/9x=15 (Multiply 9 from both sides to get 5x by itself)

5x=135 (Divide by 5 from both sides to  get x by itself)

x=27

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What is the base 8 representation of the number 11100111(2)
kondor19780726 [428]

Remark

You could convert base two to base 10 and then convert base 10 to base 8. That's the long way. The procedure below is the short way.

Step One

Write the base 2 number in groups of 3 starting from the right and going left

11 100 111

Step Two

Convert the base 2 numbers in groups of 3 to base 8. The largest result will be a 7

11 = 2*1 + 1 = 2 + 1 = 3

100 = 1*2^2 = 4

111 = 1*2^2 + 1*2 + 1 = 7

Step Three

Read the answer going down.

347 is the answer

Answer

347(8) = C


5 0
3 years ago
Brendan has a cherry tree in his yard. Currently the tree is 9 feet tall. That is 50% taller than it was when Brendan planted it
adell [148]

Answer:

Step-by-step explanation:

The tree when he got it was half the size it is now.  If the tree is 9 feet tall, back then it was half of 9 feet, which is 4.5 feet.

5 0
3 years ago
Read 2 more answers
The sum of a number and its square is 182. Find the number.
Mars2501 [29]

Answer:

13 and -14 satisfy this condition

Step-by-step explanation:

Let's represent that number as x

and the square of x is x^2

So,

x + x^2 = 182

Subtract 182 from both sides

x + x^2 - 182 = 182 - 182

x + x^2 - 182 = 0

rearrange the quadratic equation

x^2 + x -182 = 0

let's use the quadratic formula

\frac{-b+\sqrt{b^2-4ac} }{2a}       or      \frac{-b-\sqrt{b^2-4ac} }{2a}

a = 1, b = 1, c = -182

\frac{-1+\sqrt{1^2-4*1*(-182)} }{2*1}       or     \frac{-1-\sqrt{1^2-4*1*(-182)} }{2*1}

\frac{-1+\sqrt{1+728} }{2}      or         \frac{-1-\sqrt{1+728} }{2}

\frac{-1+\sqrt{729} }{2}            or    \frac{-1-\sqrt{729} }{2}

\frac{-1+{27} }{2}     or    \frac{-1-{27} }{2}

\frac{26}{2}     or    \frac{-28}{2}

13 or    - 14

Lets check

13 + 13^2 = 13 + 169

= 182

Also,

-14 + (-14^2) = -14 + 196

= 182

8 0
3 years ago
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Answer:

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Step-by-step explanation:

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kolezko [41]

The answer is D I think

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