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4 years ago

15

Can you plz help me ASAP will mark brainliest

1 answer:

Alexandra [31]4 years ago

6 0

Answer:

What is it?

Step-by-step explanation:

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What 2 numbers can be added to make -40 as well as added to make -6?

madreJ [45]

-20 x 2 or -10 x 4 both equal -40

-2 x 3 = 6

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3 years ago

Serjik [45]

$\qquad$ $\purple{\twoheadrightarrow\bf 2cos^2A = 1 + cos2A }$

$\qquad$ $\purple{\twoheadrightarrow\bf a^3 +b^3 = (a+b)^3 -3ab(a+b)}$

$\qquad$ $\purple{\twoheadrightarrow\bf 2 sinA cosA = sin2A}$

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1)

$\qquad$ $\twoheadrightarrow\bf L.H.S$

$\qquad$ $\pink{\twoheadrightarrow\bf cos^4 x}$

$\qquad$ $\twoheadrightarrow\sf \dfrac{1}{4} (2cos^2x)^2$

$\qquad$ $\twoheadrightarrow\sf \dfrac{1}{4}(1+cos2x)^2$

$\qquad$ $\twoheadrightarrow\sf \dfrac{1}{4}(1+2cos2x+cos^22x)$

$\qquad$ $\twoheadrightarrow\sf \dfrac{1}{4}+\dfrac{1}{2}cos2x+\dfrac{1}{8}\times 2cos^22x$

$\qquad$ $\twoheadrightarrow\sf \dfrac{1}{4}+\dfrac{1}{2}cos2x+\dfrac{1}{8}\times(1+cos4x)$

$\qquad$ $\pink{\twoheadrightarrow\bf \dfrac{1}{4}+\dfrac{1}{2}cos2x+\dfrac{1}{8}\times cos4x}$

$\qquad$ $\twoheadrightarrow\bf R.H.S$

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2)

$\qquad$ $\twoheadrightarrow\bf L.H.S$

$\qquad$ $\pink{\twoheadrightarrow\bf cos^6\theta +sin^6\theta }$

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$\twoheadrightarrow\sf (cos^2\theta +sin^2\theta)^3 -3cos^2\theta sin^2\theta (cos^2\theta +sin^2\theta)$

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3 years ago

The length of a rectangle is twice the width. if the perimeter of the rectangle is 24, what is the area of the rectangle?

Nana76 [90]

Let L be length and W be width.

L = 2W
And our perimeter is 2L + 2W. Substitute L to get:

2*(2W) + 2W = 24
4W + 2W = 24
6W = 24
W = 4
That means L equals 8.

So our area of the rectangle is L*W or 8*4 = 32 units squared

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3 years ago

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timama [110]

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