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3 years ago

All rectangles are parallelograms. True False

Mathematics

1 answer:

navik [9.2K]3 years ago

3 0

Answer:

false

Step-by-step explanation:

Not all parallelograms are rectangles, only some of them are.

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Which of the following options have the same value as 75%, percent of 96?

dexar [7]

The choices should be B, C, and E. Hope this helps

6 0

2 years ago

Please help me with these, oh sweet jesus

Lelechka [254]

Answer:

77. $\cot^{6} x = \cot^{4} x \csc^{2}x - \cot^{4} x$ Proved

78. $\sec^{4}x \tan^{2} x = \sec^{2}x [\tan^{2}x + \tan^{4}x ]$ Proved

79. $\cos^{3} x\sin^{2} x = [\sin^{2}x - \sin^{4}x] \cos x$ Proved.

80. $\sin^{4}x - \cos^{4}x = 1 - 2\cos^{2}x + 2 \cos^{4} x$ Proved.

Step-by-step explanation:

77. Left hand side

= $\cot^{6} x$

= $\cot^{4} x \times \cot^{2} x$

= $\cot^{4}x [\csc^{2}x - 1]$

{Since we know, $\csc^{2} x - \cot^{2}x = 1$ }

= $\cot^{4} x \csc^{2}x - \cot^{4} x$

= Right hand side (Proved)

78. Left hand side

= $\sec^{4}x \tan^{2} x$

= $\sec^{2} x [1 + \tan^{2}x] \tan^{2} x$

{Since $\sec^{2}x - \tan^{2}x = 1$ }

= $\sec^{2}x [\tan^{2}x + \tan^{4}x ]$

= Right hand side (Proved)

79. Left hand side

= $\cos^{3} x\sin^{2} x$

= $\cos x[1 - \sin^{2} x] \sin^{2} x$

{Since $\sin^{2}x + \cos^{2} x = 1$ }

= $[\sin^{2}x - \sin^{4}x] \cos x$

= Right hand side

80. Left hand side

= $\sin^{4}x - \cos^{4}x$

= $[\sin^{2}x + \cos^{2}x]^{2} - 2\sin^{2} x \cos^{2}x$

{Since $\sin^{2}x + \cos^{2} x = 1$ }

= $1 - 2\cos^{2} x[1 - \cos^{2}x ]$

= $1 - 2\cos^{2}x + 2 \cos^{4} x$

= Right hand side. (Proved)

7 0

3 years ago

Which distributive property represents the area of the rectangle?

shutvik [7]

I am confident that the best option is Last one in this case.

4 0

2 years ago

PLEASE HELP!!! Justify each step in solving the equation (WILL GIVE BRAINLIEST!)

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2. Addition POE(property of equality)
3. Add variables
4. Subtraction of integers
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3 years ago

Please state the equation of the line in standard form

kramer

Answer:

See below

Step-by-step explanation:

Slope = rise / run

from 0,-1 to 1.5 , 0

this is 1 / 1.5 = 2/3

y xis intercept = -1

y = 2/3 x -1 Slope intercept form

2/3 x - y = 1 another form

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1 year ago