Each month mrs. li pays her phone company $28 for phone service and$0.07 per minute for long-distance calls. use the expression 28 0.07 m to find the amount she was billed if her long-distance calls totaled 223 minutes.

Answers

Answer 1

Answer: To find the amount Mrs. Li was billed for her long-distance calls totaling 223 minutes, you can use the expression:

28 + 0.07 * 223

First, calculate the cost of the long-distance calls:

0.07 * 223 = 15.61

Now, add this cost to the fixed monthly charge:

28 + 15.61 = 43.61

So, Mrs. Li was billed $43.61 for her phone service with 223 minutes of long-distance calls.

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Round 6.4 to the nearest whole number

Add. Write your answer in simplest form.
2/5+2/5+3/5

Answers

Hello,

2/5+ 2/5 + 3/5= 7/5
=================

7/5 in simplest form

What is the common difference between the elements of the arithmetic sequence below? –18, –22.5, –27, –31.5, –36

Answers

Answer
Common difference = -4.5

Explanation.
An arithmetic sequence is a sequence in which the next term is found by adding a constant to the current term. This constant is called the common difference.
If a, b, c, d, e, ….is an arithmetic sequence, then the common difference will be,
Common difference = b-a=c-b=d-c=e-d…..
Now the question above common difference is;
Common difference = (-22.5)-(-14)=-4.5

Answer:

-4.5

confirmed correct on edge

A container holds 50 electronic components, of which 10 are defective.1. If 6 components are drawn at random from the container, the probability that at least 4 are not defective is ?
A) 0.26
B) 0.42
C) 0.75
D) 0.91
E) 1.00
2. If 8 components are drawn at random from the container, the probability that exactly 3 of them are defective is ?
A) 0.147
B) 0.203
C) 0.300
D) 0.375
E) 0.750

Answers

1.) q = P(defective) = 10/50 = 0.2
p = P(not defective) = 1 - P(defective) = 1 - 0.2 = 0.8
P(x) = nCr p^x q^(n-x)
P(x ≥ 4) = P(4) + P(5) + P(6) = 6C4 * (0.8)^4 * (0.2)^2 + 6C5 * (0.8)^5 * 0.2 + (0.8)^6 = 15 * 0.4096 * 0.04 + 6 * 0.32768 * 0.2 + 0.262144 = 0.24576 + 0.393216 + 0.262144 = 0.90112
Option D is the correct answer.

2.) p = P(defective) = 10/50 = 0.2
q = P(not defective) = 1 - P(defective) = 1 - 0.2 = 0.8
P(x) = nCr p^x q^(n-x)
P(x = 3) = 8C3 * (0.2)^3 * (0.8)^5 = 8C3 * 0.008 * 0.32768 = 56 * 0.008 * 0.32768 = 0.1468
Option A is the correct answer.

An angle is formed by the junction of two rays.
a. True
b. False

Answers

The most probable and most likely answer to this problem of true or false would be true.

An angle is formed by the junction of two rays. Usually, when two rays are in junction, two angles are formed. Either the formed angle is an acute angle, obtuse angle, or a right angle. The other angle that comes with the formed angle mentioned earlier would be a reflex angle. When two rays form just a line, the angle formed would be just one which is a complete rotation, thus the angle would be a 360 angle.

What is the common ratio for the geometric sequence below, written as a fraction?768, 480, 300, 187.5, …

Answers

common ratio = second term/first term = 480/768 = 5/8.

Answer:

5/8 on E2020

Step-by-step explanation:

PLS HELP THNXS!!! In a survey of a sample of computer users, 10% said their computer had a malfunction that needed to be repaired by a service technician. This describes a statistic. t or f

Answers

Answer:

Yes this is true.

Step-by-step explanation:

In a survey of a sample of computer users, 10% said their computer had a malfunction that needed to be repaired by a service technician.

The number 10% is a statistic because it is based on a sample of say x computer users, not the entire population of computer users.

And sample x can be any number like 500 or 600 etc. The entire population is in millions. And, sample is a part of population.

So, the answer is true.

im fairly certain that its true because you don't know the exact number of people surveyed. If they had said "out of the 100 people we surveyed 10% had problems" that would be a Parameter because parameters are percents out of the whole. if that makes sense.

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