All categories

3 years ago

Select the correct answer. Which expression is equivalent to if no denominator equals zero? A. B. C. D.

Mathematics

1 answer:

Nitella [24]3 years ago

8 0

there are multiple test versions of these:

16r^6s^3/8r^2s^6 answer = B. 2r^4/s^3

(4m^5n^2/m^n)^3 answer = A. 64m^9n^3

cd^4/c^2d^8 answer = C. 1/cd^4

You might be interested in

The expression 1/ 4 y+ 3/ 8 factored is

Nadusha1986 [10]

It is factored into:
(1/4)(y+(3/2))

4 0

3 years ago

A silver chain has 100 links. Each link is made of thin silver wire and is in the shape of a circle of radius 2,5 cm. Find the v

Tamiku [17]

Number of links = 100

Shape of each link = Circle

Radius = 2.5

Area = πr²

= 3.14×2.5×2.5

= 19.625

Now for 100 links

19.625×100

1962.5Cm²

Cost = 1962.5 × 0.06

= $117.75

Must click thanks and mark brainliest

4 0

3 years ago

A Finance professor created a multiple-choice examination with 100 questions for his students. Each question has five possible

seropon [69]

Answer:

a. 0.011 or 1.1%

b. 31.56% or 0.3156

c. 99.94% or 0.9994

d. 3.42% or 0.0342

Step-by-step explanation:

Given

Number of multiple choice questions = 100

Probability of success for students who have attended lectures and done their homework = 0.85

a. Using binomial distribution

Probability of correctly answering 90 or more questions out of 100

$= \sum^{100}_{x=90}\left {100} \atop {x}} \right C (0.85)^x(0.15)^{100-x}\\=0.011$

Since,

In Binomial Distribution

$P(X=x) =\left {h} \atop {x}} \right.C P^x q^{n-x}$

where $x=0,1,...,n$

and $q=1-P$

Probability is therefore 1.1% or 0.011

b. Probability of correctly answering 77 to 83 questions out of 100

$= \sum^{83}_{x=77}\left {100} \atop {x}} \right C (0.85)^x(0.15)^{100-x}\\=0.3156$

The probability is therefore 31.56% or 0.3156

c. Probability of correctly answering more than 73 questions out of 100

$= \sum^{100}_{x=73}\left {100} \atop {73}} \right C (0.85)^x(0.15)^{100-x}\\=0.9994$

The probability is therefore 99.94% or 0.9994

d. Assuming that the student has answered randomly

Probability of success = 1/5 = 0.2

Probability of failure = 1 - 0.2 = 0.8

Probability of answering 28 or more questions correctly

$= \sum^{100}_{x=28}\left {100} \atop {x}} \right.c (0.2)^x(0.8)^{100-x}\\=0.0342$

The probability is therefore 3.42%

5 0

3 years ago

The diameter of a cylindrical water tank is 10ft and its height is 11 ft what's the volume of the tank used value 3.14and round

MakcuM [25]

Answer:

863.5 ft³

Step-by-step explanation:

Given that :

Diameter, d = 10 ft

Height, h = 11 feets

Radius of tank, r = d/ 2 = 10ft / 2 = 5 ft

The volume of a cylinder is calculated using the relation :

Volume = πr²h

Volume = 3.14 * 5^2 * 11

Volume = 3.14 * 25 * 11

Volume = 863.5ft³

7 0

3 years ago

An equation of the horizontal line that passes through the point (-2,5)

Greeley [361]

Y=5 it's a horizontal lines so b in y=mx+b would have to be 5 and since it's horizonal, it doesn't have a slope so it's just y=5

8 0

4 years ago