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2 years ago

Plz, Answer if u want brain.

Mathematics

2 answers:

serg [7]2 years ago

8 0

She forgot to add in 2 decimal places.

djyliett [7]2 years ago

3 0

You had to add 2 decimal places u forgot

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(14-3x)2 simplified using the distributive property.

ivolga24 [154]

Answer: 28-6x

This is the same as -6x+28

===============================

To get that answer, you multiply each term inside the parenthesis by the outer term 2

14 * 2 = 28

-3x * 2 = -6x

So,

(14-3x)*2 = 14*2 - 3x*2 = 28-6x

----------

The distribution rule says

a(b-c) = ab-ac

which is the same as saying

(b-c)a = ba-ca

We can flip things around because we can multiply in any order.

6 0

3 years ago

The ratio of the number of text messages sent by Lucas to the number of text messages sent by his sister is 3 to 4. Lucas sent 1

vitfil [10]

Answer:

the answer is 24

Step-by-step explanation:

because if you do 18÷3, it equals 6. then you would do 6×4=24

7 0

3 years ago

Messages arrive to a computer server according to a Poisson distribution with a mean rate of 11 per hour. Determine the length o

Zarrin [17]

Answer:

The length of the interval during which no messages arrive is 90 seconds long.

Step-by-step explanation:

Let X = number of messages arriving on a computer server in an hour.

The mean rate of the arrival of messages is, λ = 11/ hour.

The random variable X follows a Poisson distribution with parameter λ = 11.

The probability mass function of X is:

$P(X=x)=\frac{e^{-11}11^{x}}{x!};\ x=0,1,2,3....$

It is provided that in t hours the probability of receiving 0 messages is,

P (X = 0) = 0.76

Compute the value of t as follows:

$P(X=0)=\frac{e^{-11\times t}(11\times t)^{0}}{0!}\\0.76=e^{-11\times t}\\\ln(0.76)=-11\times t\\t=-\frac{\ln(0.76)}{11} \\=0.025\ hours\\\approx90\ seconds$

Thus, the length of the interval during which no messages arrive is 90 seconds long.

6 0

3 years ago

Complete each statement using place value and the distributive property 8(42) = 8(40 + 2) = The product of 8 and 42 is

nadezda [96]

Answer:

the first box can be filled by,

$= 8(40) + 8(2) \\ = 320 + 16 \\ = 336$

the second box can be filled by,

$336$

4 0

2 years ago

Read 2 more answers

Michael drives to work and home from work each workday. He travels a total of 160 miles at the end of the workweek. How far is M

sdas [7]

Answer:

Michael's house is 16 miles away from work.

Step-by-step explanation:

We are given the following in the question:

Total distance traveled by Michael at the end of the workweek = 160 miles.

Let $x$ miles be the distance between Michael's house from work.

Thus, total distance covered in one day =

$2x\text{ miles}$

Total distance covered in one weekday(5 days) =

$2x\times 5 = 10x\text{ miles}$

Equating,

$10x = 160\\\Rightarrow x = 16$

Thus, Michael's house is 16 miles away from work.

6 0

2 years ago