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3 years ago

Which statement below compares the decimals correctly?

Mathematics

2 answers:

rusak2 [61]3 years ago

8 0

The answer is A I also agree :)

nata0808 [166]3 years ago

7 0

A. 0.65 < 0.77 0.77 is greater than 0.65

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Find area of this figure 3 ft 4 ft 5ft

Ahat [919]

Answer:

26.14

Step-by-step explanation:

For the triangles: 3*4=12

For the circle: 28.27/2=14.135

12+14.135=26.135

~26.14

6 0

3 years ago

* Use for question 4-6 *

rusak2 [61]

16ft.(.25s)2
4ft/s*2
8ft/s

16ft(.5s)2
8ft/s * 2
16ft/s

16ft(2s)2
32ft/s * 2
64ft/s

ft =feet
s =second(s)
/ =per

3 0

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

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

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

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

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

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;

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

So,

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

becomes

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

Proved

3 0

3 years ago

Who would be interested in using inequalities? What are the benefits

Troyanec [42]

I would be interested, they help because they allow you to see how much you can use for whatever it is you need. An example would be how much money you can spend per month to still have enough for your bills

4 0

3 years ago

2x - 6y = 12<br> 2x – 4y = 8

Alenkasestr [34]

Answer:

true

Step-by-step explanation:

7 0

2 years ago