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Ivahew [28]
2 years ago
15

What is the surface area of the cylinder?

Mathematics
1 answer:
Aleks04 [339]2 years ago
8 0

Step-by-step explanation:

A=2πrh+2πr2 ans for 1 one

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Use a calculator to find the approximate value of sin-1 (0.549)
tatyana61 [14]
This is the concept of algebra, we are required to approximate the arcsin of the value given using a calculator;
sin theta=[opposite]/[hypotenuse]
arcsin is the inverse of sin, thus;
arcsin(0.549)=33.2984
the answer is 33.3984°
6 0
3 years ago
Read 2 more answers
What is a polynomial function in standard form with zeroes 1, 2, -2. and -3
Juli2301 [7.4K]
<span>A polynomial with the given zeros can be represented as
   f(x) = (x-1)(x-2)(x+2)(x+3).
   Note that if you set f(x) = 0, then 1,2,-2, and -3 certainly are the solutions. From here, we simply multiply/expand out the polynomial. We can do this in a variety of ways, one of which is taking the left two and right two products separately. We have
   (x-1)(x-2) = x^2 - 3x + 2
   and
   (x+2)(x+3) = x^2 + 5x + 6.
   This gives that
   f(x) = (x^2 - 3x + 2) (x^2 + 5x + 6).
   Expanding this expression out then gives us our answer as
    f(x) = x^4 + 2x^3 - 7x^2 - 8x + 12
   or answer choice B.</span>
3 0
3 years ago
What is the value of 9(n+2)−5n for n=14?<br> 3<br> 9<br> 10<br> 19
Murrr4er [49]
If you want to know the value of a  function, you need to substitute the variable (here n) for the value:

so in the function

9(n+2)−5n

we substitute n with 14:

<span>9(14+2)−5*14

first calculate the inside of the bracket:

</span>
<span>9*16−5*14

9 times 16 is 144

144-5*14

5*14 is 70, so we have

144-70=74

so the answer should actually be 74!

Perhaps you mistyped the questions? can you check it again, please?

</span>
5 0
3 years ago
Express as a trinomial (2x+8)(x-3)
Luden [163]

Answer:

\huge\boxed{(2x+8)(x-3)=2x^2+2x-24}

Step-by-step explanation:

\text{Use FOIL:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(2x+8)(x-3)=(2x)(x)+(2x)(-3)+(8)(x)+(8)(-3)\\\\=2x^2-6x+8x-24\qquad\text{combine like terms}\\\\=2x^2+(-6x+8x)-24\\\\=2x^2+2x-24

8 0
3 years ago
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Factorise fully 2a^2b + 6ab^2​
Inga [223]

Answer:

2ab(a + 3b)

Step-by-step explanation:

2a²b + 6ab²​

Factor out 2ab

2ab(a + 3b)

4 0
3 years ago
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