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Ernie
Questions and answers by visitors named
Ernie
Questions (64)
What are the points of inflection for the function f(x)=xln(x)? Thanks a lot, you guys are the bomb!
1 answer
339 views
Find the 1st four hexagonal numbers and the formula
The difference of two squares a2 - b 2 can be found in 16sq2 – 13sq2 = 3(16
1 answer
342 views
25sq2 – 21sq2 = 4(25 + 21) = 4 . 46 = 184
1 answer
255 views
to determine the number of trout in a lake, a conservationist cathes 123 trout, tags them and throws them back into the lake.
6 answers
515 views
a motorboat moves 25 miles per hour in still water. it travels 21 miles upstream and 21 miles downstream in a total time of 2.0
2 answers
821 views
The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time
4 answers
676 views
The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time
2 answers
580 views
The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time
2 answers
692 views
to determine the size pf a parks moose population, caturalists catch 72 moose, tag them, and then set them free. months later 65
1 answer
453 views
to determine the size pf a parks moose population, caturalists catch 72 moose, tag them, and then set them free. months later 65
1 answer
459 views
to determine the size pf a parks moose population, caturalists catch 72 moose, tag them, and then set them free. months later 65
4 answers
1,611 views
A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is
4 answers
672 views
A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is
1 answer
446 views
A satellite's escape velocity is 6.mi./sec, the radius of the earth is 3960 mi, and the earth's gravitational constant (g) is
1 answer
424 views
The table lists how poverty level income cutoffs(in dollars) for a family of four have changed over time. Use the midpoint
4 answers
2,939 views
The table lists how poverty level income cutoffs(in dollars) for a family of four have changed over time. Use the midpoint
6 answers
8,517 views
$11,000, invested for 9 years at 3% compounded quarterly.
2 answers
758 views
$11,000, invested for 9 years at 3% compounded quarterly.
2 answers
476 views
midpoint (-5,-15) endpoint (-13,-8). find the other endpoint
1 answer
354 views
midpoint (4,13) endpoint (0,6). find the other endpoint
1 answer
378 views
2x^2+5x-1=0
1 answer
289 views
let f(x)=-5x+6 find and simplify f(x+2)
f(x+2)=____
3 answers
485 views
let f(x)=-5x+6 find and simplify f(x+2)
f(x+2)=___
1 answer
373 views
let f(x)=-5x+6 find and simplify f(x+2)
f(x+2)=___
1 answer
341 views
let f(x)=-5x+6 find and simplify f(x+2)
f(x+2)=____
1 answer
347 views
let f(x)=-4x+7. find and simplify f(n)
f(n)=_____ simplify your answer
3 answers
1,053 views
Evaluate the function f(x)=-3x+9 at the indicated values.
a). f(2)=_____ simplify your answer b).f(-2)=_____ simplify your answer
2 answers
808 views
find the slope of the line containing the pair of points.
(-5,-10) and (-4,-3)
2 answers
593 views
find the distance between the points (-20,16) and (-15,19). also find the midpoint of the segment that joins the points.
what is
2 answers
786 views
Express f(x)in the form f(x)=(x-k)q(x)+r for the given values of k.
f(x)=x^3+6x^2+10x+4, k=-2 f(x)=____
1 answer
337 views
Express f(x)in the form f(x)=(x-k)q(x)+r for the given values of k.
f(x)=x^3+6x^2+10x+4, k=-2 f(x)=____
1 answer
415 views
-2;p(x)=3x^3+5x-6
is -2 a zero of the polynomial(x) ?
1 answer
278 views
-2;p(x)=3x^3+5x-6
is -2 a zero of the polynomial(x) ?
1 answer
289 views
Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k.
f(x)=x^3 +6x^2 +10x+4,k=-2 f(x)=_____
1 answer
398 views
Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k.
f(x)=x^3 +6x^2 +10x+4,k=-2 f(x)=_____
1 answer
349 views
Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k.
f(x)=x^3 +6x^2 +10x+4,k=-2 Is f(x)= 0 ?
2 answers
803 views
Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k.
f(x)=x^3 +6x^2 +10x+4,k=-2 Is f(x) =0 ?
1 answer
365 views
Express f(x) in the form f(x)=(x-k)q(x)+r for the given value of k.
f(x)=x^3 +6x^2 +10x+4,k=-2 Is f(x) =0 ?
1 answer
418 views
Factor f(x) into linear factors given that k is a zero of f(x).
f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i In completely factored
4 answers
2,501 views
Factor f(x) into linear factors given that k is a zero of f(x).
f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i In completely factored
2 answers
922 views
``If 18g of a radioactive substance are present initially and 5 yr later only 9 g remain, how much of the substance will be
2 answers
856 views
Find the doubling time of an investment earning 7% interest if interest is compounded continuously is ____years.
Round to the
3 answers
1,521 views
The perimeter of a triangle is 57in. The longest side is 13in. longer than the medium side, and the medium side is 7 in. more
4 answers
3,184 views
The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The
2 answers
1,192 views
If a building contractor hires 5 day laborers and 2 concrete finishers, his payroll for the day is $1200. If he hires i day
2 answers
514 views
The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The
1 answer
508 views
The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The
2 answers
522 views
If a building contractor hires 5 day laborers and 2 concrete finishers, his payroll for the day is $1200. If he hires i day
2 answers
533 views
The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The
1 answer
813 views
If 18g of a radioactive substance are present initially and 5 yr later only 9g remains, how much of the substance will be
5 answers
3,032 views
If a building contractor hires 5 day laborers and 2 concrete finishers, his payroll for the day is $1200. If he hire 1 day
5 answers
6,212 views
The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The
1 answer
486 views
The Fan cost Index(Fci)represents the cost of four average-price tickets, refreshments, and souvenirs to a sporting event. The
4 answers
1,196 views
lim
x-->-9 x^2+10x+9 / x-9
2 answers
742 views
Did I solve this word problem correctly?
In last week’s basketball game, the Lions scored 6 less than twice what the Bobcats
4 answers
1,575 views
In the past,the United States Public Health service and state local health departments dominate the field.
2 answers
649 views
Whether or not we have chosen to use our licenses since then.they remain of enormous value to us.
4 answers
1,232 views
Many people who spend their summers in a city dream of owning a cottage at the shore or in the mountains by a lake.
3 answers
1,063 views
Their sure the only sounds they will hear at night will be the wash of ocean waves or the croaks of bullfrogs.
3 answers
778 views
Some just look forward to the perspect of watching birds and animals,such as rabbits or deer,in their natural habitats.
2 answers
556 views
Many people who spend their summers in a city dream of owning a cottage at the shore or in the mountains by a lake.
3 answers
941 views
1. Express the given integral as the limit of a Riemann sum but do not evaluate:
integral[0 to 3]((x^3 - 6x)dx) 2.Use the
3 answers
4,031 views
Using 4 equal-width intervals, show that the trapezoidal rule is the average of the upper and lower sum estimates for the
4 answers
2,036 views
Find the interval on which the curve of y equals the integral from 0 to x of 6 divided by the quantity 1 plus 2 times t plus t
1 answer
1,096 views
