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3 years ago

-2x+7y=14 identify the x-intercept and y-intercept

Mathematics

2 answers:

laiz [17]3 years ago

8 0

-2x=14-7y
X=(14-7y)/-2

7y=14+2x
Y=(14+2x)/7

Juli2301 [7.4K]3 years ago

8 0

Answer:

x=7/2y − 7

Step-by-step explanation:

Let's solve for x.

−2x+7y=14

Step 1: Add -7y to both sides.

−2x+7y+−7y=14+−7y

−2x=−7y+14

Step 2: Divide both sides by -2.

−2x/−2 = −7y+14/−2

x=7/2y − 7

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

See Explanation

Step-by-step explanation:

Question like this are better answered if there are list of options; However, I'll simplify as far as the expression can be simplified

Given

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Required

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Factorize

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$a(a + 2b) -b(a+ 2 b)$

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Recall that

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The expression $(a -b) (a+ 2 b)$ becomes

$(sec^2x -tan^2x) (sec^2x+ 2 tan^2x)$

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In trigonometry

$sec^2x =1 +tan^2x$

Subtract $tan^2x$ from both sides

$sec^2x - tan^2x =1 +tan^2x - tan^2x$

$sec^2x - tan^2x =1$

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Substitute 1 for $sec^2x - tan^2x$ in $(sec^2x -tan^2x) (sec^2x+ 2 tan^2x)$

$(1) (sec^2x+ 2 tan^2x)$

Open Bracket

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Solving further;

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$secx = \frac{1}{cosx}$

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Substitute the expressions for secx and tanx

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$(secx)^2+ 2 (tanx)^2$ becomes

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Open bracket

$\frac{1}{cos^2x}+ 2 (\frac{sin^2x}{cos^2x})$

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Add Fraction

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3 years ago

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