subject

Mathematics, 10.10.2020 15:01 loveagirl111puppy

Matrices and Row Operations Perform the indicated row operation:
[2 -1 -4|7]
[-1 2 1|-1]
[3 4 5| 5]
R3+3R2R3
[2 -1 -4|]
[-1 2 1| -1]
[_ _ _|_]

ansver

Answers: 3

Show answers

Another question on Mathematics

question

Mathematics, 21.06.2019 16:00

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Answers: 2

question

Mathematics, 21.06.2019 17:00

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Answers: 1

question

Mathematics, 21.06.2019 17:30

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Answers: 2

question

Mathematics, 21.06.2019 18:40

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Answers: 2

You know the right answer?

Matrices and Row Operations Perform the indicated row operation:
[2 -1 -4|7]
[-1 2 1|-1...

Questions

question

Physics, 10.10.2019 05:10

When hydrogen nuclei are fused together to form a helium nucleus, the mass of the product is 0.7% less than the mass of the reactants. if 1 gram (1 ×...

question

Computers and Technology, 10.10.2019 05:10

Consider a system that has two cpus and each cpu has two threads (hyperthreading). suppose three processes, p0, pl, and p2, are started with run times...

question

Mathematics, 10.10.2019 05:10

Aresearcher is conducting a study on contact lenses. she finds that in a sample of contact lens-wearing adults, those who wear their contact lenses fo...

question

Physics, 10.10.2019 05:10

Two wooden crates rest on top of one another. the smaller top crate has a mass of m1 = 25 kg and the larger bottom crate has a mass of m2 = 91 kg. the...

question

Biology, 10.10.2019 05:10

In what way do fungal decomposers contribute to earth's carbon cycle? a.) fungal decomposers are not involved in earth's carbon cycle. b.) fungi fix c...

question

Physics, 10.10.2019 05:10

Problem 3.052 a piston–cylinder assembly contains 2 lb of water, initially at 100 lbf/in.2 and 600°f. the water undergoes two processes in series: a...

question

Business, 10.10.2019 05:10

Determine the effects of the following on a cash basis taxpayer's gross income for 2019 and 2020. if an amount is zero, enter "0". gross income 2019 g...

question

Physics, 10.10.2019 05:10

Two forces are acting on a 0.250 kg hockey puck as it slides along the ice. the first force has a magnitude of 0.320 n and points 15.0° north of east....

question

Biology, 10.10.2019 05:10

Azotobacter is a genus of bacteria that live in soil and have the following characteristics: they are bacilli. they are gram-negative. they are oblig...

question

Mathematics, 10.10.2019 05:10

For certain species of organisms, the effective growth rate is highest at an intermediate population size. this is the called the allee effect. for ex...

question

Business, 10.10.2019 05:10

Revenue and the recognition principle heartstrings gift shoppe sells an assortment of gifts for any occasion. during october, heartstrings started a g...

question

Chemistry, 10.10.2019 05:10

Aparticular fluid has a shear stress of 0.005 n m-at a shear rate of 1 s- and a shear stress of 2 n m-2 at a shear rate of 50 - present an argument as...

question

Chemistry, 10.10.2019 05:10

Coal can be considered to be a binary mixture of non-combustible mineral matter (ash) and combustible organic material (coal). an as-mined coal stream...

question

Chemistry, 10.10.2019 05:10

Aliving room floor 3 m by 4.5 m is constructed of a layer of oak planks 1.2 cm thick laid over plywood 2.0 cm thick. in winter, the basement air is at...

question

Chemistry, 10.10.2019 05:10

Ahouse wall which is 2.75 m high and 10 m wide is made of 110 mm thick bricks on the outside, 10 mm thick plasterboard on the inside and 100 mm thick...

question

Chemistry, 10.10.2019 05:10

Aforwarded double effect evaporator is required to concentrate an orange com from o to 60% using steam at 170 kn/m (gauge) the food anters at 1 000 ka...

question

Chemistry, 10.10.2019 05:10

Adouble effect parallel evaporator is used to concentrate a sugar solution from b mass % to 25% and the total feed is split into a 80 20 ratio (80 is...

question

Chemistry, 10.10.2019 05:10

Ibrahim and co-workers developed a new method for the quantitative analysis of hypoxanthine, a natural compound of some nucleic acids. 14 as part of t...

question

Chemistry, 10.10.2019 05:10

In an attempt to conserve water and to be awarded leed (leadership in energy and environmental design) certification, a 20,000-liter cistern has been...

question

Chemistry, 10.10.2019 05:10

Oxygen is diffusing through hob-diffusing pas mixture under steady-state conditions. the non-diffusing gas mixture consists of ammonia and ethylene wi...

More questions: Mathematics Another questions