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3 years ago

Okay so clearly I'm not so smart but I need help again..?

Mathematics

1 answer:

Alla [95]3 years ago

5 0

Lateral surface area, is the area that is not including bases
so it is an area of free rectangles
3*(5*8)=3*40=120 cm²

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Step-by-step explanation:

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3 years ago

Complete the equation: x^2+8x + _=(_)^2

pentagon [3]

Answer:

x^2+8x+16=(x-4)^2

EXPLANATION:

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3 years ago

What is the slope of the line graphed above? A. -2 B. -1 c. -1/2 d. 1/2 E. 2

Ierofanga [76]

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-1/2

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3 years ago

What is the expanded form for 45 squared?

Orlov [11]

Answer:

C) 45 x 45

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Step-by-step explanation:

45 squared means 45² i.e 45×45

Therefore, letter C) 45×45 is the answer

6 0

3 years ago

Read 2 more answers

D/dx(sin x/2+cos x) = (a + b cos x)/(2+cos x)^2 find a and b.

Talja [164]

Answer:

a = 1 and b = 2

Step-by-step explanation:

Using the Quotient Rule>

d/dx[(sin x)/(2+cos x) ]

= [(2 + cos x) * cosx - sin x * - sin x)] / (2 + cos x)^2

= 2cos x + cos^2x + sin ^2 x) / (2 + cos x)^2

But cos^2x + sin^2x = 1 so we have:

(1 + 2 cos x) / (2 + cos x)^2

- so a = 1 and b = 2.

7 0

3 years ago