Mark M.

08/31/16

Distance rate and time

a man rode his bicycle from his home to the bike shop and then walked back home. he averaged 10km/hr riding and 5 km/hr walking. how far is it from his home to the bicycle shop if his total... more

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Algebra

08/31/16

Algebra question : 3^-3*3^-1

Is it 81 or 1/81. Every calculator says 1/81 but the way my professor taught it, it made it seem like it was 81

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Math

08/31/16

How to find K in Q(t) = 15(1 - e^-kt)

A 50-gallon barrel is filled completely with pure water. Salt water with a concentration of 0.3 pounds/gallon is then pumped into the barrel, and the resulting mixture overflows at the same rate.... more

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Math

08/31/16

Find the inverse function for f(t) = 42e^0.25t

Find the inverse function for f(t) = 42e^0.25t I know to find an inverse you switch the x and y's but then what? do you take the log or what. I'm confused, please help me!

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Math

08/31/16

One time capsule he looks at is a right circular cylinder with a height, h, of 16 inches and a hemisphere with a radius, r, of 3 inches on each end.

Find the volume of the time capsule, using π = 3.14. Round your answer to two decimal places.

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Calculus 2

08/31/16

How do you integrate square root of x^2-9 all if that over x^3 with respect to x?

What is the answer?

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Other

08/31/16

What is the answer to the solution in interval notations for x-1=7x-1 and 4x-7<3-x?

I need to express or explain the solution in interval notations for x-1≤7x-1 and 4x-7<3-x?

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Math

08/30/16

determine whether an expression is correct using rules of natural log.

Determine if each is correct or incorrect (a) ln(4) + ln(x) − ln(y) = ln(4x)/ ln(y) I said this one was correct because adding is multiplication, and subtracting is dividing. So I think its... more

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Math

08/30/16

how many solutions does an equation have?

How many solutions does the following equation have?ln(x^2 + 3x − 4) = 0 1) none 2) 1 3)2 4) infinite I don't know how to go about solving this. I now log functions have an infinite domain so... more

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Algebra

08/30/16

Roller coaster

The roller coaster carries 92 men altogether. Some of its cars carry 4 men, and the rest carry 6 men. There are three less 6-man cars than 4-man cars. How many 4-man cars are there?

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Geometry Word Problems

08/30/16

p: 2x = 16 q: 3x – 4 = 20 Which is the converse of p ? q?

A) If 2x ≠ 16, then 3x – 4 ≠ 20.B) If 3x – 4 ≠ 20, then 2x ≠ 16.C) If 2x = 16, then 3x – 4 = 20.D) If 3x – 4 = 20, then 2x = 16.

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Trignometry Class 10 Apoorav

08/30/16

(secA-tanA)

(secA-tanA)2=cosecA-1/cosecA+1

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Function Basics, Domai/range

08/30/16

Give the domain of s(x)=vx+6 s(x)=x+6 in interval notation

I don't know what I'm doing. I'm lost

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Exponents

08/29/16

a student gives ab^3 as an answer when asked to write ab•ab•at using exponents. What is the students error?

please show me/explain to me what the student did wrong

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Math Help

08/28/16

Find the slope of the the line

Find the slope of the line containing the following (b,h)^2 and (b+h,(b+h)^2)

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What Is The Answer?

08/28/16

For what values of x does the graph of f(x) = x - 2 sin x have a horizontal tangent?

(Use n as your integer variable. Enter your answers as a comma-separated list.) x=pi/3 +2pin, x=5pi/3 +2pin is not the right answer. I've tried many ways for the answer.

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Find A Linear Function

08/28/16

Find a linear function h, given h(8)=-25 and h(-1)=11. Then find h(5)

Find a linear function h, given h(8)=-25, and h(-1)=11. Then find h(5) h(x)= h(5)=

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Algebra 2

08/27/16

At 10:30 AM, two planes leave Houston, one flying east at 560 km/h and the other flying west at 640 km/h. At what time will they be 2100 km apart?

Algebra 2 word problem

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Equations

08/27/16

Why does addition in this equation suddenly turn into division?

Please help with the following Problem: 0,105=0,083+0,44*RD(0,65). Solve for RD. Solution: RD= (0,105-0,083)/(0,44*0,65)=0,22/0,286=0,769=7,69% Question: Why does the + between 0,083 and 0,44 in... more

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Probability

08/26/16