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4 years ago

Which term completes the product so that it is a difference of squares? (-5x-3)(-5x+ )

Mathematics

2 answers:

patriot [66]4 years ago

8 0

The answer for this question is 3

siniylev [52]4 years ago

7 0

The answer is 3

$a^{2}-b^{2}=(a-b)(a+b)$

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Find the surface area of the cone in terms of pi.

Nana76 [90]

Surface area of cone is 60π cm^2

Option A is correct.

Step-by-step explanation:

We are given:

Height = 17cm

Radius= 3cm

We need to find surface area of cone in terms of π.

The formula used to find surface area of cone is:

$Surface\,\,area\,\,of\,\,cone=\pi r(r+\sqrt{h^2+r^2})$

Putting values:

$Surface\,\,area\,\,of\,\,cone=\pi r(r+\sqrt{h^2+r^2}) \\Surface\,\,area\,\,of\,\,cone=\pi \,3(3+\sqrt{(17)^2+(3)^2})\\Surface\,\,area\,\,of\,\,cone=\pi \,3(3+\sqrt{289+9)}\\Surface\,\,area\,\,of\,\,cone=\pi \,3(3+\sqrt{298)}\\Surface\,\,area\,\,of\,\,cone=\pi \,3(3+17)\\Surface\,\,area\,\,of\,\,cone=\pi \,3(20)\\ Surface\,\,area\,\,of\,\,cone=60\pi$

So, Surface area of cone is 60π cm^2

Option A is correct.

Keywords: Surface area of cone

Learn more about Surface area of cone at:

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5 0

4 years ago

4 + (y + 3) + y2 for y = 5

sergiy2304 [10]

Answer: 22

Step-by-step explanation:

just plug in 5 Hope I help u

6 0

3 years ago

Read 2 more answers

A person wishes to mix coffee worth $9 per lb with coffee worth $3 per lb

Sedaia [141]

To answer the question, let x be the number of pounds of coffee worth $9. Having said that, the number of pounds of coffee worth $3 is 120 - x. The equation relating the items before and after mixing is,
(x)($9) + (120 - x)($3) = (120)($5)
The value of x is 40. Therefore, the amount of coffee worth $9 and $3 to be used are 40 and 80 pounds, respectively.

7 0

3 years ago

raketka [301]

Answer:

The answer is 12

6×12= 24

6×12=72

6 0

2 years ago

Which property is demonstrated below? b.1=b A. associative property B. distributive property C. commutative property D. identity

nydimaria [60]

Answer:

i beleive thats the identity property, good luck and im sorry if its wrong!

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers