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3 years ago

Which of the following is a rational number?

Mathematics

1 answer:

Tpy6a [65]3 years ago

5 0

1.425 is a rational number

pi is irrational

sqrt (50) = 5sqrt(2) = irrational

sqrt(-4) is an imaginary number

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Lelu [443]

Step-by-step explanation:

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7 0

3 years ago

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7. In how many ways can the same 5-question True / False quiz be

goldenfox [79]

Answer:

243 ways

Step-by-step explanation:

Calculating the number of posible outcomes:

We have n trials.

Each trial has m possible outcomes.

The total number of outcomes is:

$T = m^{n}$

In this question:

5 questions, that is, 5 trials, so $n = 5$

Each question has 3 options(True, false or unanswered). So $m = 3$

How many ways?

$T = 3^{5} = 243$

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3 years ago

Here are two containers that hold oatmeal.

Mandarinka [93]

Answer:

V = A * H for both - area of base * height

V1 (prism) = 6 * 4 H = 24 H

V2 (cylinder) = 3.14 * 2.5^2 H = 19.6 H

The base of the prism is larger and hence has a larger volume

3 0

2 years ago

Just checking my answers guys! what is 8x20

marissa [1.9K]

160 is the answer to 8x20

3 0

3 years ago

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Consider the line y=1 x -1 and the point P=(2,0).

Montano1993 [528]

Answer:

Step-by-step explanation:

d(x)=√((x-2)2+(y-0)²)

=√((x-2)²+y²)

=√((x-2)²+(x-1)²)

=√(x²-4x+4+x²-2x+1)

=√(2x²-6x+5)

D=d²(x)=2x²-6x+5

$b.\\\frac{dD}{dx}=4x-6\\\frac{dD}{dx}=0,gives \\4x-6=0\\x=\frac{3}{2}\\\frac{d^2D}{dx^2}=4 >0 at x=\frac{3}{2}\\so~D~or~d^2~or~d~is~minimum~at~x=\frac{3}{2}\\so~y=1(\frac{3}{2} )-1=1/2=0.5\\so~nearest~point~is~(1.5,0.5)$

8 0

3 years ago