2 years ago

A color printer prints 23 pages in 12 minutes. How many minutes does it take per page?

Mathematics

1 answer:

larisa [96]2 years ago

8 0

It takes about 2 mins per page and per hour bike use costs $3.33

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At least 350 students attended the band concert friday night

icang [17]

Yes 350 people attended the Friday concert

8 0

2 years ago

the daily cost of renting a car is $25 plus $0.40 per mile traveled. If Paul paid $143.40 for a day's rental how many mile did h

Mama L [17]

Answer:

295 mi

Step-by-step explanation:

we can write this as an equation. the base fee, with no miles traveled is 25. this will be our y intercept, or b in the equation y = mx + b

our slope is .4

for every 1 mile increase for x, our y increases by .4

so:

y = .4x + 25

set this equal to 143.40

143.40 = .4x + 25

x = 295 mi

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2 years ago

Find the vertex for this function. f(x)=-2x^2+8x-11

loris [4]

$\bf \textit{vertex of a vertical parabola, using coefficients} \\\\ f(x)=\stackrel{\stackrel{a}{\downarrow }}{-2}x^2\stackrel{\stackrel{b}{\downarrow }}{+8}x\stackrel{\stackrel{c}{\downarrow }}{-11} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right) \\\\\\ \left( -\cfrac{8}{2(-2)}~~,~~-11-\cfrac{8^2}{4(-2)} \right)\implies \left( 2~~,~~-11+\cfrac{64}{8} \right) \\\\\\ (2~~,~~-11+8)\implies (2~~,~~-3)$