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3 years ago

Identify the domain and range of y = 4x - 5 + 3

Mathematics

1 answer:

Zepler [3.9K]3 years ago

5 0

Answer:

$\huge\boxed{\text{Domain:}\ D=\mathbb{R}=(-\infty;\ \infty)}\\\boxed{\text{Range:}\ R=\mathbb{R}=(-\infty;\ \infty)}$

Step-by-step explanation:

y = 4x - 5 + 3 = 4x - 2

It's an equation of a line in the slope-intercept form.

y = 4x - 2 → f(x) = 4x - 2 - it's a lienar function.

The domain of a linear function is the set of all real numbers.

If a slope of linear function is different than 0, then the range is the set of all real numbers.

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Samantha needs 4/5 yard of fabric to make costumes for the school play. Write and solve and equation to find how many costumes s

ArbitrLikvidat [17]

Answer:

Step-by-step explanation:

Samantha needs 4/5 yard of fabric to make costumes for the school play.

Let x represent the number of yards of fabric that she has

Let y represent the total number of costumes that she can make from x yards of fabric.

Since one costume require 4/5 yards of fabric, y costumes will require

x ÷ 4/5 = x×5/4 = 5x/4

The equation will be

y = 5x/4

to find how many costumes she can make with 8 yards of fabric, it becomes

y = (5×8)/4

y = 40/4 = 10

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3 years ago

Construct a sample (with at least two different values in the set) of 4 measurements whose mean, median, and mode are equal. If

KiRa [710]

Answer:

The first set 4 , 6 , 6 , 8

The second set 2 , 6 , 6 , 10

Step-by-step explanation:

Mean is the average of the values in a set. This can be found by summing all the numbers and dividing by the total number. The median is the middle number when the values are listed in order of increasing size. The mode is the number(s) that appear the most often in the set.

The first set 4 , 6 , 6 , 8

mean = (4 + 6 + 6 + 8 )/4 = 6

median = (6+6)/2 = 6

Mode = 6

The second set 2 , 6 , 6 , 10

mean = (2 + 6 + 6 + 10)/4 = 6

median = (6+6)/2 = 6

Mode = 6

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3 years ago

You spend $30.40 on 4 CDs. Each CD costs the same amount and is on sale for 80% of the original price.

gizmo_the_mogwai [7]

Answer: The original price is $9.5
In this question, you are given the total spending( $30.40), amount of spend (4CDs) and the discounted price(80%). Then to find the original price of the CD, the calculation would be:

Total spending = amount of cd x CD discounted price
$30.40 = 4 x 0.8 Original price
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3 years ago

Kevin is 14 inches taller than George. The difference between Kevin and Richard is two inches less than between Richard and Geor

Artemon [7]

1 foot is 12 inches which makes 14 1.2

6.6-1.2= 5'4 george

richard is 6'0

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3 years ago

in how many ways can a family of four be seated at a round table if two brothers must sit together a)1 b)8 c)2 d)4

Contact [7]

Answer:

Step-by-step explanation:

i think this is right if not it would be 2

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3 years ago