2 years ago

Consider the function f(x)=−3/4 x+1.

Mathematics

1 answer:

jenyasd209 [6]2 years ago

7 0

-(3/4) (12)+1 = -9+1=. -8

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una ventana rectangular tiene l metros de ancho y h metros de altura, con un perímetro de 6 metros y un área de 2m² ¿cuál es la

seropon [69]

Answer:

The formula for calculating the width of the window is

$w=\frac{-(-3)(+/-)\sqrt{-3^{2}-4(1)(2)}} {2(1)}$

Step-by-step explanation:

<u><em>The question in English is</em></u>

A rectangular window is l meters wide and h meters high, with a perimeter of 6 meters and an area of 2m². What is the formula for calculating the width of the window?

we know that

The perimeter of the window is equal to

$P=2(l+w)$

we have

$P=6\ m$

$6=2(l+w)$

simplify

$3=(l+w)$

isolate the variable l

$l=3-w$ ----> equation A

The area of the window is equal to

$A=lw$

we have

$A=2\ m^2$

$2=lw$ ----> equation B

substitute equation A in equation B

$2=(3-w)w$

solve for w

$2=3w-w^2$

$w^2-3w+2=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$w^2-3w+2=0$

$a=1\\b=-3\\c=2$

substitute in the formula

$w=\frac{-(-3)(+/-)\sqrt{-3^{2}-4(1)(2)}} {2(1)}$ ---> formula for calculating the width of the window

$w=\frac{3(+/-)\sqrt{1}} {2}$

$w=\frac{3(+/-)1} {2}$

$w=\frac{3(+)1} {2}=2\ m$

$w=\frac{3(-)1} {2}=1\ m$

7 0

4 years ago

Add or subtract each expression.Simplify your final answer show all work.

Elan Coil [88]

1) 2x-1 or x=1/2
2) 5a-16 or a=16/5

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4 years ago

A snail can crawl 2/5 of a meter in a minute. How many minutes will it take the snail to crawl 6 meters? Enter your answer in th

Varvara68 [4.7K]

6 / (2/5) = 15
It should take the nail 15 minutes to crawl 6 meters.

6 0

3 years ago

Read 2 more answers

The librarian needs to return 24 books to the shelf. In one hour she finished 3/4 of the job. How many books has she

Rudiy27

Answer:

18 books done and 6 books left

Step-by-step explanation:

24 *3/4 = 18

3 0

3 years ago

Read 2 more answers

How many fewer cans of food were collected by 87369 than 91761?

denpristay [2]

The answer I think you are looking for is 4,392.

91,761 - 87,369 = 4,392

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3 years ago