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omeli [17]
3 years ago
13

I need help with these multiple choice questions

Mathematics
1 answer:
blagie [28]3 years ago
6 0
1.C
2.B
3.B
4.A
go try those
(o_oψ)

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The speed of water in a whirlpool varies inversely with the radius. If water speed is 2.5 feet per second at a radius of 30 feet
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The speed of the water in the 3 feet radius is 25 feet per second.
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An army contingent of 104 members is to march behind an army band of 96 members in a parade.
Trava [24]

You can dispose a number x of elements in a matrix-like formation with n\times m shape if and only if n and m both divide x, and also nm=x.


So, we need to find the greatest common divisor between 104 and 96, so that we can use that divisor as the number of columns, and then.


To do so, we need to find the prime factorization of the two numbers:


104 = 2^3\times 13

96 = 2^5 \times 3


So, the two numbers share only one prime in their factorization, namely 2, but we can't take "too many" of them: 104 has "three two's" inside, while 96 has "five two's" inside. So, we can take at most "three two's" to make sure that it is a common divisor. As for the other primes, we can't include 3 nor 13, because it's not a shared prime.


So, the greater number of columns is 2^3=8, which yield the following formations:


104 \to 8\times 13

96 \to 8\times 12

3 0
3 years ago
WILL mark BRAINLIEST <br> WHICH OF THE FOLLOWING COULD BE THE EQUATION OF THE FUNCTION BELOW?
AysviL [449]

Answer:

y = 0.5cos(4(x+π/2)) -2

Step-by-step explanation:

The centerline of the oscillation is at -2, so only the 2nd and 4th choices are viable.

The multiplier of x is computed from (2π)/period. One period is π/2, so the multiplier of x is ...

... 2π/(π/2) = 4 . . . . . matching the 2nd selection.

The horizontal offset in the second equation (π/2) is of no consequence, as it is one full period of the function.

The peak-to-peak amplitude of the oscillation is 1 unit, so the multiplier of the cosine function (which usually has a peak-to-peak value of 2 units) is 0.5. Every offered answer has that characteristic.

The appropriate choice is the 2nd one:

... y = 0.5cos(4(x+π/2)) -2

3 0
3 years ago
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Simplify the expression completely (assume it is defined).
viktelen [127]

Step-by-step explanation:

I think this is the answer

5 0
3 years ago
WILL MARK BRAINLIEST! PLEASE HELP MEH!<br><br> Find the area
Marina CMI [18]
It is a trapezoid.

A of trapezoid = \frac{a+b}{2} (h)
A = \frac{4.6+10}{2} (8)
A = 58.4

The area of the shape is 58.4 ft²
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