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4 years ago

Factorise x^-x-2.Please do it fast.

Mathematics

1 answer:

Luba_88 [7]4 years ago

6 0

Answer:

Solution,

${x}^{2} - x - 2 \\ = {x}^{2} - (2 - 1)x - 2 \\ = {x}^{2} - 2x + x - 2 \\ = x(x - 2) + 1(x - 2) \\ = (x - 2)(x + 1)$

Hope this helps...

Good luck on your assignment..

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the scale on the map of Virginia shows that 1 inch represents 30 miles.the actual distance from rochmond Virginia to Washington

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the answer is 3 and 2/3 of an inch

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4 years ago

If u show work you will get brainliest this is worth 12points

Rudik [331]

Hi, hope this helps, so the sum is 10+12+(-27)+(-9)+10
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3 years ago

What is the mean range median mode<br> 75 90 62 82 94 98 94

Ksivusya [100]

Answer:

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Step-by-step explanation:

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3 years ago

The volume of this cone is 602.88 cubic inches. What is the radius of this cone?

choli [55]

Answer:

Step-by-step explanation:

Volume of a cone formula: V = $\pi r^{2} \frac{h}{3}$

where,

h is the height <u>9 in (assuming)</u>

r is the radius <u>want</u>

v is the volume <u> 602.88 cubic inches</u>

$\pi$ is <u>a = 3.14 </u>

Plug in everything:

$602.88 = 3.14r^{2} (\frac{9}{3} )\\602.88 = 3.14r^{2} (3)\\1808.64 = 28.26r^{2}\\\frac{1808.64}{28.26} = \frac{28.26r^{2}}{28.26} \\r^{2} = 64\\r = \sqrt{64} \\r = 8\\or\\r =-8$

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3 years ago

If c varies directly as the square root of d, and c=14, when d = 64, find c when d= 324

zubka84 [21]

Answer:

c = 31.5

Step-by-step explanation:

Given c varies directly as $\sqrt{d}$ then the equation relating them is

c = k $\sqrt{d}$ ← k is the constant of variation

To find k use the condition c = 14 when d = 64, then

14 = k × $\sqrt{64}$ = 8k ( divide both sides by 8 )

1.75 = k

c = 1.75 $\sqrt{d}$ ← equation of variation

When d = 324 , then

c = 1.75 × $\sqrt{324}$ = 1.75 × 18 = 31.5

5 0

3 years ago