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A) 7x-5y+4z-9=0    -x+3y+5z-2=0    5x+y+14z-20=0   b) 7x-5y+4z-9=0 -5x+4y+z-3=0 x+2y-z+1=0   c)...

Carlisle conducted an experiment to determine if the there is a difference in mean body temperature for men and women. He found that the mean body temperature for a sample of 100 men was 97.9 with...

Greatest value of Sin4Θ + cos4Θ is

Which of these methods do you find easiest? Which are the most confusing? Give examples. 1)Graphing and tables 2)Substitution 3)Elimination

Least value of tan2Θ + cot2Θ is

If Point x is on segment PQ so that the length of segment PX is twice the length of segment XQ what are the coordinates of point x?

I just watched someone solve this problem and I don't understand how this person got the answer that she got.

Sir Isaac Newton investigated the cooling process of water temperature and showed that the temperature change is exponential in time and can be predicted by Tdiff=T0e-kt Where Tdiffis the...

scientific notation Use the problem solving plan. Find the number of boxes of apples that needed to be sold in 1998 to make a profit of \$40,000. Round to the nearest whole number.Last...

Amanda composed two songs. The longer song is 126 seconds less than twice the length of the short song. The longer song is 286 seconds. How long is the shorter song?

Smiths have driven 400 miles which 5/8 of their trip. How much further do they have to drive

If a number is about 400. What is the least it can be? What is the greatest it could be? Show your answers in pictures

A recipe for spaghetti requires four 16-ounce bottles of ketchup to make 2 gallons of sauce. How many bottles of ketchup are needed to make 18 gallons of sauce?

5. Consider the following four investments. a) You invest \$ 3,000 annually in a mutual fund that earns 10 percent annually, and you reinvest all distributions. How much will you have in the account...

Part A: if Y and X salary ratio = ¾ Part B: if Y and Z salary ratio = 2/3 And total of salary = 1800\$ The salary of everyone is =?

please help this wa in my summer nth packet and I don't know how to solve it.

A: jan and jani salary ratio =3/4 B:jan and sam salary ratio =2/3 Total of salary of them are = 1800\$ now every one salary is =?

Need help solving the above question and walked through

a pole's shadow measures 24 ft. and length of shadow cast by vertical meterstick was 40 cm. How long was the pole?

I really need help solving this problem im stuck and I cant find a way out of it Im trying to find a way to solve it or for someone to show me how to solve it