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3 years ago

2 (x- y) = 8 where x = 6

Mathematics

2 answers:

e-lub [12.9K]3 years ago

8 0

Plug the value of x in the equation

2(6 - y) = 8
12 - 2y = 8
-2y = -4
y = 2

svp [43]3 years ago

6 0

2(x-y)=8
2(6-y)=8
12-2y=8
-12 -12
-2y=-4
/-2 /-2
y=2

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What is the measure of angle x?

Kitty [74]

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On the first day, a company has 64 orders for shipping crates on backorder. Every day customers order 18 more shipping crates. I

SOVA2 [1]

The correct answer is:

B. 14

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3 years ago

Find the volume of this square based pyramid. 5ft 6 ft [? ]ft

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Answer:

48 ft³

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3 years ago

zubka84 [21]

Answer:

See Explanation Below

Step-by-step explanation:

Given

$(sin x - cos x)^2 = sec^2x - tan^2x - 2sinx.cos x.$

Required

Prove

To start with; we open the bracket on the left hand side

$(sin x - cos x)^2 = (sin x - cos x)(sin x - cos x)$

$(sin x - cos x)^2 = (sin x )(sin x - cos x)- (cos x)(sin x - cos x)$

$(sin x - cos x)^2 = sin^2 x -sinx cos x - sin xcos x + cos^2 x$

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Reorder

$(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x$

From trigonometry;

$sin^2x + cos^2x = 1$

So;

$(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x$

becomes

$(sin x - cos x)^2 = 1 - 2sinx cos x$

Also from trigonometry;

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

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3 years ago

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Answer:

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