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2 years ago

Please can someone help me im going to failed if i don't get help

Mathematics

1 answer:

kupik [55]2 years ago

5 0

Answer:

good

Step-by-step explanation:

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A store received a shipment of 4 boxes of peanuts. All four boxes were stacked on top of each other and measured 12 feet high. H

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3 years ago

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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:

The question in English is

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

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

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

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

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

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3 years ago

I need help please.!

gulaghasi [49]

Hey ! I know for sure A is one of the correct answers i’m working on the rest now

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3 years ago

A restaurant chef was ordering supplies. He ordered 7 pounds of beef at 6.53 per pound, 4 pounds of potatoes at $10.47 a pound,

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Answer:

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Step-by-step explanation:

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3 years ago

What is associative property?

Alenkasestr [34]

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2 + (3 + 4) = (2 + 3) + 4

6 • (5 • 4) = (6 • 5) • 4

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3 years ago

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