MATHEMATICS COLLEGE

1. Which expression shows 3 less than X?
А 3-х
cx - 3
в 3х

Answers

Answer 1
Answer:

The expression that shows 3 less than x is (c) x - 3

How to determine the expression that shows 3 less than x?

From the question, we have the following parameters that can be used in our computation:

3 less than x

"less than" here means that we use the negative sign

And also x is greater than 3

i.e. x > 3

So, we have

3 less than x = x - 3

Hence, the expression that shows 3 less than x is (c) x - 3

Read more about expressions at

brainly.com/question/30492964

#SPJ3
Answer 2
Answer:

Answer:

C: x-3

Step-by-step explanation:

3 less go last

x would go first

and less is the minus sign

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C^3+64= Help me understand this please.

Which statement best describes the areas and perimeters of the figures below?

Answers

Answer:

They have different areas and different perimeters

The sum of three consecutive odd integers is -381

Answers

Given that the numbers are consecutive:
let the first number be x, the second number will be x+1, the third number be x+2
thus the sum of the numbers will be:
x+(x+1)+(x+2)=-381
3x+3=-381
3x=-381-3
3x=-384
x=-128
thus the first number is -128, the second number is -127 and the third number is -126

The product of 2 and a number x is 4. What is the value of 2×4×1=​

Answers

Answer:

2x4x1 is 8, but if you're wanting x's value, it's 2.

Can someone help me with isosceles triangles???

Answers

Answer:

1) x = 75°

2) x = 180° - 2×40° = 180° - 80° = 100°

3) x = 180° - 2×73° = 180° - 146° = 34°

4) x = (180° - 122°) : 2 = 58° : 2 = 29°

5) x = 90° - (180° - 80°) : 2 = 90° - 100° : 2 = 90° - 50° = 40°

Find the perimeter of the following polygon. Be sure to include the correct unit in your answer.15 m
1
mm
15 m
17 m
km
9 m
12 m

Answers

Answer:

489 km is the perimeter

Step-by-step explanation:

mark me BRAINLIEST

When Stephan moved from Illinois to Florida, his average monthly electric bill increased from $83 to $102. He is curious to know whether his IL or FL electric bill is relatively more or less expensive, when compared to the distribution of electric bills for each state. In Illinois, the mean monthly electric bill is $85, with a standard deviation of $3.20. In Florida, the mean monthly electric bill is $105, with a standard deviation of $4.00. Compute the z-scores for Stephan's IL and FL electric bills. Round to three decimal places if necessary.

Answers

Using it's formula, it is found that the z-scores are:

  • For Illinois, of Z = -0.625.
  • For Florida, of Z = -0.75.
  • Due to the lower z-score, the bill is relatively lower in Florida.

Z-score:

In a distribution with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = (X - \mu)/(\sigma)

  • It measures how many standard deviations the measure is from the mean.  
  • The higher z-score means that the measure X is relatively higher.

In Illinois:

  • Bill of $83, mean of $85, standard deviation of $3.2, hence X = 83, \mu = 85, \sigma = 3.2

Then:

Z = (X - \mu)/(\sigma)

Z = (83 - 85)/(3.2)

Z = -0.625

In Florida:

  • Bill of $102, mean of $105, standard deviation of $4, hence X = 102, \mu = 105, \sigma = 4

Then:

Z = (X - \mu)/(\sigma)

Z = (102 - 105)/(4)

Z = -0.75

Due to the lower z-score, the bill is relatively lower in Florida.

To learn more about z-scores, you can take a look at brainly.com/question/21620274

Answer: The z-scores for Stephan's IL and FL electric bills. are -0.625 and 0.75 respectively.

Step-by-step explanation:

Given:  Average monthly electric bill in Illinois =  $83

Average monthly electric bill in Florida = $102

Formula of z : z=(X-mean)/(standard\ deviaton)

In Illinois, the mean monthly electric bill is $85, with a standard deviation of $3.20.

z=(83-85)/(3.20)= -0.625

In Florida, the mean monthly electric bill is $105, with a standard deviation of $4.00.

z=(105-102)/(4)=(3)/(4)=0.75

Hence, the z-scores for Stephan's IL and FL electric bills. are -0.625 and 0.75 respectively.
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