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BlackZzzverrR [31]
3 years ago
10

What is 21 X 21 ???? 3 3​

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0

Answer: 441

Step-by-step explanation:

21 x 21 = 441

777dan777 [17]3 years ago
4 0

Answer:

21 times 21 is 441

Step-by-step explanation:

i used a calculator

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What is the equation of the line that passes through the point (1,0) and is perpendicular to the line x+5y=30
Andre45 [30]

Answer:

The equation of line passing through points (1 , 0) is  x - 5 y - 1 = 0    

Step-by-step explanation:

Given equation of line as

x + 5 y = 30

Now, equation of line in standard form is y = m x + c

where m is the slope

So,  x + 5 y = 30

Or, 5 y = - x + 30

Or, y = - \frac{1}{5} x + 6

So, Slope of this line m = - \frac{1}{5}

Again , let the slope of other line passing through point (1 , 0) is M

And Both lines are perpendicular , So , products of line = - 1

i.e m × M = - 1

Or, M = - \frac{1}{m}

Or, M = - 1 × - \frac{1}{\frac{1}{5}} =  \frac{1}{5}

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y - y_1 = M × (x - x_1)

Or, y - ( 0 ) =  \frac{1}{5} × ( x - 1 )

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Or, y  =   \frac{1}{5} x - \frac{1}{5}

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Or, 5×y + 1  =   x

∴ 5 y + 1 =  x

I.e  x - 5 y - 1 = 0

Hence The equation of line passing through points (1 , 0) is  x - 5 y - 1 = 0   Answer

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Step-by-step explanation:

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