f(x)=-6x-1 and g(x)=4x^2 select the solution for (fg)(x) (answer)
Hi Jaime, I'd say that the notation suggests multiplying f and g together so fg(x)=(-6x-1)*(4x2)=-24x3-4x2 Does this make sense to you? Jim
Hi Jaime, I'd say that the notation suggests multiplying f and g together so fg(x)=(-6x-1)*(4x2)=-24x3-4x2 Does this make sense to you? Jim
1. No, sound waves are longitudinal pressure waves 2.yes because light made up of transverse electric and magnetic fields 3. yes a LASER is an example as 4. yes a trumpet or a pipe organ are examples 5. a. is the definition of an long. wave Jim
Allison, There are 2 circuits, the one on the right is an RC circuit and the one in the left is an LCR circuit. If we start with the RC circuit and apply the loop theorem (conservation of energy) we get -iR-q/C=0 these are the voltage drops across the resistor and the...
1. average speed =dist/time =100/2 =50 km/h so the answer is b. 2.You are given that the care is driven at 25 km/h which is a constant speed so the answer is a. 3.You are given that he car is traveling in a circle so it's velocity (direction) is...
Robert, The question is asking for H(5)=.159*(125)-2.230*(25)+9.33*(5)-1.214 = 9.561 Hurricanes. Jim
The answers to both questions is c and is a result of no net force acting on the body. Jim
Jack, I think question 1 is just a binomial trial with a 98% success The probability of one system failing is .0960. No failures is .955 =.9039….so one is 1-.9039…=.0960 For question 2. The sensitivity is missing. The accuracy (98%) is the probability...
the standard deviation is defined as the square root of the variance, If the variance is 25 the the sd=5 Jim
When y varies directly with x, any increase in x will result in an increase in y. Examples are y=3x+7. The converse is y varies inversely with x such as y=10/x where any increase in x results in a decrease in y. Hope this clears it up. ...
Hi Karen, The first inequality is just two vertical lines, one at x=30 and the other at x=80 any x in-between those lines is a solution. The second inequality is incorrect, there should be a variable (either x or y) somewhere in...
Hi Missy, The statement is that there is a positive relationship between number of iced coffee drinks sold and the physical activity of the people in the community is a meaningless statistic and therefore could be used to mislead. &...
Hi Laura, The two equations -2x-4y=1, 12y=-6x-3 are actually only one equation. If you factor out a -3 from both sides of the second equation you get -2x-4y=1 which is the same as the first equation. So there is only one equation and 2 unknowns...
Hi The answer to the first is b. inefficiency in general is because of processes that use some of the energy generated in a non productive way and usually wind up generating un useable heat. The second is c. because garbage is a biomass.
Hi Jack, In the absence of the witness and the only information you have is there was an accident involving a cab you would have to conclude that the most likely cab color would be blue because most of the cabs are blue. The witness who is 75% accurate...
Since you pay interest on the unpaid balance the difference would be 2875.59*.137/12=32.83 so it a little over $1 per day. Jim
7^x=3^(x+1) take log of both sides xlog(7)=(x+1)*log(3) solve for x x=-log(3)/(log(3)-log(7)) Jim
Hi Kaelyn, The way to see this is she has 7 choices for the first car now there are 6 left, so 6 choices for the second car and 5 for the third 4 for the fourth and 3 for the 5th. If you multiply 7*6*5*4*3 you get 2,520. This counts each ordering of the...
The probability of spinning a C or a D = number of times C and D were spun /total number of spins experimentally. so p(C or D) =4/12=1/3 Jim
dy=5*sec2(5x+6)dy put x=4 and dx=.4 in the above and calculate. sec(θ)=1/cos(θ) for the second part change dx from .4 to .8 Jim
Dalia, A series expansion of the function f(x) at x=0 is f(0)+xf'(0)+higher order terms. f'(0) is the first derivative of f(x) at x=0. The linear expansion is just the first two terms and f(x)=√(8+8x) so f'(x)=(1/2*8)/√(8+8x)...