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3 years ago

9

Find the sum of the given polynomials.

1 answer:

ioda3 years ago

7 0

<span>5m + 2n + n - 3m + 7 - 3 n
= 2m + 7

answer
</span><span>B. 2m + 7</span>

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Why is Wikipedia not considered to be a credible source?

UNO [17]

Answer: b

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What is the sum of r + s when r = –17.6 and s = 12.2? A. –29.8 B. –5.4 C. 5.4 D. 29.8

tankabanditka [31]

C. -5.4 -17.6+12.2= -5.4 because -17.6 goes first in the calculator but also its a negative

8 0

3 years ago

Bob and Anna are planning to meet for lunch at Sally's Restaurant, but they forgot to schedule a time. Bob and Anna are each goi

Viktor [21]

Answer:

The expected cost is $8.75

<em></em>

Step-by-step explanation:

Given

$Time = \{1pm, 2pm, 3pm, 4pm\}$

$C_1 = \$5$ --- If Bob and Anna meet

$C_2 = \$10$ --- If Bob and Anna do not meet

Required

The expected cost of Bob's meal

First, we list out all possible time both Bob and Anna can select

We have:

$(Bob,Anna) = \{(1,1),(1,2),(1,3),(1,4),(2,1),(2,2),(2,3),(2,4),(3,1),(3,2),(3,3)$ $,(3,4),(4,1),(4,2),(4,3),(4,4)\}$

$n(Bob, Anna) = 16$

The outcome of them meeting at the same time is:

$Same\ Time = \{(1,1),(2,2),(3,3),(4,4)\}$

$n(Same\ Time) = 4$

The probability of them meeting at the same time is:

$Pr(Same\ Time) = \frac{n(Same\ Time)}{n(Bob,Anna)}$

$Pr(Same\ Time) = \frac{4}{16}$

$Pr(Same\ Time) = \frac{1}{4}$

The outcome of them not meeting:

$Different = \(Bob,Anna) = \{(1,2),(1,3),(1,4),(2,1),(2,3),(2,4),(3,1),(3,2)$

$,(3,4),(4,1),(4,2),(4,3)\}$

$n(Different) = 12$

The probability of them meeting at the same time is:

$Pr(Different) = \frac{n(Different)}{n(Bob,Anna)}$

$Pr(Different) = \frac{12}{16}$

$Pr(Different) = \frac{3}{4}$

The expected cost is then calculated as:

$Expected = C_1 * P(Same) + C_2 * P(Different)$

$Expected = \$5 * \frac{1}{4} + \$10 * \frac{3}{4}$

$Expected = \frac{\$5}{4} + \frac{\$30}{4}$

Take LCM

$Expected = \frac{\$5+\$30}{4}$

$Expected = \frac{\$35}{4}$

$Expected = \$8.75$

<em>The expected cost is $8.75</em>

4 0

3 years ago

LOOK BELOW DUDES !!!!!

Kipish [7]

I got 18 inches
That is the last choice and it should be the correct answer

7 0

3 years ago

Solve: -4(4+7x)+x is greater than or equal to -6x+5

Vladimir [108]

Answer:

x≤-1

Step-by-step explanation:

-4(4+7x)+x≥-6x+5

-16-27x≥-6x+5

+27x +27x

-16≥ 21x+5

-5 -5

<u>-21≥21x</u>

21

-1≥x

6 0

3 years ago