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3 years ago

7y=3x−7 Complete the missing value in the solution to the equation. (1, )

2 answers:

8 0

$\bf 7y=3x-7~\hspace{5em}(\stackrel{x}{1},\stackrel{y}{\phantom{X}})~\hspace{5em} \stackrel{x = 1}{7y=3(1)-7}
\\\\\\
7y=-4\implies y=\cfrac{-4}{7}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
~\hfill \left(\stackrel{x}{1},\stackrel{y}{-\frac{4}{7}}\right)~\hfill$

bija089 [108]3 years ago

7 0

Plug 1 in for x to get 7y=3(1)-7

7y=-4
y=-4/7

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1 year ago

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2 years ago

each of equal sides of an isosceles triangle is 4cm greater than its height .If the base of triangle is 24 cm ,calculate the per

Montano1993 [528]

<h3>Answer:-</h3>

192 cm²

<h3>Step by step explanation :-</h3>

Let us take the height be x , then its side = x + 4. Now half of base will be 12 cm .

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=> base² + perpendicular ² = hypontenuse ²

=> 12² + x² = (x+4)²

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=> 8x = 144-16

=> 8x = 128

=> x = 128/8

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Hence the height of ∆ is 16 cm .So the area will be half the product of base and altitude.

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<h3>★ Hence the area of the triangle is 192 cm² .</h3>

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3 years ago