2 years ago

Find the total surface area of the rectangular prism in square millimeters.

Mathematics

1 answer:

Dimas [21]2 years ago

4 0

Según yo es 20

Step-by-step explanation:

sumas los lados

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Is -31 >or equal to -3

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Answer:

-3 is greater than -31

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A large dump truck uses 1,318 gallons of fuel in one day of work. How many gallons of fuel are needed if the truck works for 5 d

Andreyy89

Answer:

6,590 Gallons

Step-by-step explanation:

1,318 x 5 = x

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3 years ago

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The function f(x) = –x2 + 20x – 75 models the profit from one customer, in dollars, a shop makes for printing photos, where x is

trasher [3.6K]

The function is graphed as shown below

Part A:

We use the formula $- \frac{b}{2a}$ to find the vertex of the function. A quadratic function of the form of $a x^{2} +bx+c$ and equating this form to the given function $- x^{2} +20x-75$ , we have
$b=20$ and $a=-1$ .

Substituting $a$ and $b$ into the vertex formula, we have
$x=- \frac{20}{2(-1)}=10$ , as shown in the graph

This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos

Part B:

We can find solution to this equation by factorising

$- x^{2} +20x-75=0$
$-( x^{2} -20x+75)=0$
$x^{2} -20x+75=0$
$(x-5)(x-15)=0$
$x=5$ and $x=15$ , as shown in the graph

The two values means that the company makes no profit when they either produce 5 or 15 photos

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3 years ago

WILL GIVE Brainliest!!!!!!!!!!! what is: 8/3 + 2 as a fraction

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Answer:

14/3 or 4 2/3

Step-by-step explanation:

Hope it helps :)

Brainliest pls? Have a good day/night

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3 years ago

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