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3 years ago

PLEASE ASAP ILL GIVE BRAINLIEST.

Mathematics

2 answers:

Solnce55 [7]3 years ago

6 0

3rd one I did this once and I got it correct

arsen [322]3 years ago

4 0

Answer:

the correct answer is option C

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If f (1) =4 and f(4)= f (n-1)-4 then find the value of f(4)

GaryK [48]

f(1) = 4 is given

f(n) = f(n-1)-4 is the recursive step or rule

f(2) = f(2-1)-4 ... replace n with 2

f(2) = f(1) - 4

f(2) = 4-4 ... replace f(1) with 4

f(2) = 0

----------

Repeat for n = 3

f(n) = f(n-1)-4

f(3) = f(3-1)-4

f(3) = f(2) - 4

f(3) = 0 - 4 .... replace f(2) with 0, which is from f(2) = 0 found earlier

f(3) = -4

---------

Repeat for n = 4

f(n) = f(n-1)-4

f(4) = f(4-1)-4

f(4) = f(3) - 4

f(4) = -4-4 ... plug in f(3) = -4

f(4) = -8

<h3>Answer is -8</h3>

3 0

3 years ago

The radius of a car wheel is 12 inches. How far will the car travel and 15 revolutions of the wheel?

viktelen [127]

R = 12 inches, the radius of the wheel.

The circumference of the wheel is
2πr = 2π(12) = 24π inches.

WHen the wheel makes 15 revolutions, the car will travel 15 times the circumference, which is
15*(24π) = 360π inches = 1131 inches.

Answer: 1131 inches

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2 years ago

The center of a circle is located at (5, −5) . The radius of the circle is 3.

Keith_Richards [23]

The equation of a circle is:

$(x - xc) {}^{2} + (y - yc) {}^{2} = r {}^{2}$

Where (xc,yc) are the coordinates of the center.
Center (5, -5)
Radius = 3
(x-5)²+(y+5)²=3²
x²-10x+25+y²+10y+25=9
x²+y²-10x+10y+41=0

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2 years ago

The property of one permits you to multiply or divide the numerator and denominator of a fraction by the same number without cha

Alex777 [14]

There is not a property of "1" for addition, but the identity property in this case uses "0" instead. If a number is increased by 1, the value will necessary be increased or decreased by the amount added or subtracted. However, if the number either adds or subtracts zero, then value will be left unchanged. Examples: 3+1 = 4, but 3+0 = 3,

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3 years ago

Half-life of Po-210 is 140 days. If the initial mass of the sample is 5

Anna35 [415]

Answer:

$0.625kg$