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Yuri [45]
3 years ago
11

An = n2- 5

Mathematics
1 answer:
JulijaS [17]3 years ago
6 0

Answer:

D

Step-by-step explanation:

if to substitute values of n=1;2;3;4;5 into

a_n=n^2-5

then a₁=-4; a₂=-1; a₃=4; a₄=11; a₅=20.

It means the answer {-4, -1, 4, 11, 20,...} is correct.

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Brenda throws a dart at this square-shaped target: Part A: Is the probability of hitting the black circle inside the target clos
Masteriza [31]
Either way.  The probability of hitting the circle is:

P(C)=Area of circle divided by area of square

P(W)=(area of square minus area of circle divided by area of square

P(C)=(πr^2)/s^2

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...

Okay with know dimensions, r=1 (because r=d/2 and d=2 so r=1), s=11 we have:

P(inside circle)=π/121  (≈0.0259  or 2.6%)

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3 years ago
The sum of 3x^2+4x-2 and x^2-5x+3 is
Diano4ka-milaya [45]

The sum would be

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4 years ago
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kipiarov [429]

Answer:

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C

Step-by-step explanation:

This requires that you use a proportion.

a / (a + 15) = 40 / 60

The small triangle's sides are in proportion to the large triangles sides.

Reduce the right. Divide top and bottom by 20

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Cross multiply

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b is done exactly the same way.

b/(b+20) = 2/3

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2 years ago
How do you solve 2(y + 1) – 2 = 4 + 2y - y
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Answer:

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