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Vesnalui [34]
3 years ago
8

Simplify the expression 2j+4j+j+7

Mathematics
1 answer:
Alina [70]3 years ago
3 0

Answer:

7j+7

Step-by-step explanation:

2j+4j+j+7

combine like terms

7j+7

Sorry I don't really know how to explain it, but you just have to combine terms with the same unit

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(7w3-4w+3)+(5w3-3w-3)
ki77a [65]
That is a simple polynomial addition:
(7w3-4w+3)+(5w3-3w-3)
= <span>(7w^3 - 4w + 3) + (5w^3 - 3w - 3)
= </span>7w^3 - 4w + 3 + 5w^3 - 3w - <span>3
= 12w^3 - 7w
= w(</span><span>12w^2 - 7</span>)
7 0
3 years ago
The weight of people in a small town in Missouri is known to be normally distributed with a mean of 186 pounds and a standard de
OleMash [197]

Answer:

the probability that a random sample of 17 persons will exceed the weight limit of 3,417 pounds is 0.0166

Step-by-step explanation:

The summary of the given statistical data set are:

Sample Mean = 186

Standard deviation = 29

Maximum capacity 3,417 pounds or 17 persons.

sample size = 17

population mean =3417

The objective is to determine the probability  that a random sample of 17 persons will exceed the weight limit of 3,417 pounds

In order to do that;

Let assume X to be the random variable that follows the normal distribution;

where;

Mean \mu = 186 × 17 = 3162

Standard deviation = 29* \sqrt{17}

Standard deviation = 119.57

P(X>3417) = P(\dfrac{X - \mu}{\sigma}>\dfrac{X - \mu}{\sigma})

P(X>3417) = P(\dfrac{3417 - \mu}{\sigma}>\dfrac{3417 - 3162}{119.57})

P(X>3417) = P(Z>\dfrac{255}{119.57})

P(X>3417) = P(Z>2.133)

P(X>3417) =1- 0.9834

P(X>3417) =0.0166

Therefore; the probability that a random sample of 17 persons will exceed the weight limit of 3,417 pounds is 0.0166

5 0
3 years ago
Use technology or a z-distribution table to find the indicated area.
KengaRu [80]

Answer:

I think it's answer D. (141).  :D

Step-by-step explanation:

6 0
3 years ago
What makes this equation true?<br><br> -2n + 1.8 = 3.2<br><br> Im so confused
fenix001 [56]

Answer:

18 = 3.2

Step-by-step explanation:

5 0
3 years ago
The relative growth rate for a certain type of mutual fund is 5.1% per year. An account is opened with a balance of $35,000. How
Mashutka [201]
36,785 dollars            
_----____---
6 0
3 years ago
Read 2 more answers
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