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velikii [3]
2 years ago
13

Which function models the area of a rectangle with side lengths of 2x - 4 units and x + 1 units?

Mathematics
1 answer:
aalyn [17]2 years ago
5 0

Answer:

Area of rectangle, f(x)=2x^2-2x-4.

Step-by-step explanation:

We are given with side lengths of a rectangle are (2x-4) units and (x+1) units. It is required to find the area of rectangle.

The area of a rectangle is equal to the product of its length and breadth. It is given by :

A=L\times B

Let us consider, L = (2x-4) units and B = (x+1) units

Plugging the side lengths in above formula:

A=(2x-4)\times (x+1)

A=2x^2+2x-4x-4\\\\A=2x^2-2x-4

So, the function that models the area of a rectangle is f(x)=2x^2-2x-4.

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What is the total number of 17 year olds whos height is 74 inches or less
stira [4]

Answer:

2

Step-by-step explanation:

there is 2 dots along the line of 17 before 74

hope this helps :)

6 0
3 years ago
Find the value of x.<br><br> Please help
bekas [8.4K]

Answer:

86 degrees

Step-by-step explanation:

For triangle the sum of angles is equal to 180 degrees

so,

x+(x-35)+43=180

2x -35+43=180

2x = 180-43+35

2x = 172

x = 86

6 0
3 years ago
Read 2 more answers
How to write Q={1,2,3,5} in set builder form?<br>​
blagie [28]

Answer:

{x:x is a natural number less than 6}

Step-by-step explanation:

Set builder is a type of set where we have to represent any value inside a set

by using the variable x, v, b, a, c etc.

Eg A={1,2,3,4}

For eg {a: a is a natural number less than 5}

8 0
1 year ago
If you scale down the ratio on the left, what will you get for the unknown quantity on the right? 434 miles14 gallons = ?2 gallo
jarptica [38.1K]

Answer:

option (A) 62 miles

Step-by-step explanation:

Data provided in the question:

Ratio on the left = 434 miles : 14 gallons

ratio on the right = ?? : 2 gallons

Now,

The ratio on the both sides are equal

let the unknown value in the ratio be 'x'

Now, the ratio a : b can also be represented as \frac{a}{b}

therefore,

434 miles : 14 gallons = x : 2 gallons

or

⇒ \frac{\textup{434 miles}}{\textup{14 gallons}}  = \frac{\textup{x}}{\textup{2}}

or

⇒ x =  \frac{\textup{434 miles}}{\textup{14 gallons}}\times2 gallons}

or

⇒ x = 62 miles

Hence,

the correct answer is option (A) 62 miles

7 0
2 years ago
The 6% state income tax on a 42'000 salery​
Romashka [77]

Answer:

well, simply, it would be $2520.

in reality, an income tax does not work that simply. income taxes are figured using brackets, where (just making up numbers) the first $15000 might be taxed at 2%, earnings between $15,001 to $30,000 are taxed at 4%, and so on.

Thus, without knowing the tax tables to know the different rates and brackets, it's impossible to give an answer.

But in straight math terms, 6% of $42,000 is $2520

42000×.06= 2520

7 0
2 years ago
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