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2 years ago

Could somebody please help me find the answers for 'x' for these pictures?

Mathematics

2 answers:

lesya692 [45]2 years ago

8 0

Answer:

Pic 1: $x=31$

Pic 2: $x=20$

Step-by-step explanation:

Picture 1:

$2x+x-3=90\\3x-3=90\\3x=93\\x=31$

First, add the 2x and x together for 3x

Then add 3 to both sides of the equation

Finally, divide each side by 3.

Picture 2:

$7x+x+20=180\\8x+20=180\\8x=160\\x=20$

First, add 7x and x together for 8x

Then, minus 20 from both sides of the equation

Finally, divide each side by 8.

allochka39001 [22]2 years ago

6 0

Step-by-step explanation:

First picture

We can make an equation with this

2x+x-3=90

3x=93

x=31 degrees

Second picture

We can make and equation

7x+x+20=180

8x=160

x= 20

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2 years ago

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lawyer [7]

$y\textrm{ }=\textrm{ }(\frac{x\textrm{ }+\textrm{ }4}{3} )^{\frac{1}{5} }$

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On swapping $x$ and $y$ , we get $x\textrm{ }=\textrm{ }3y^{5}\textrm{ }-\textrm{ }4$

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$x\textrm{ }=\textrm{ }(\frac{y\textrm{ }+\textrm{ }4}{3} )^{\frac{1}{5} }$

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