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sinx
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sinx
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03-01-2018
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08:23 PM
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12-07-2018,
12:33 AM
sinx
replied to a thread
Working out a percentage: What grade do I need in the second part?
in
Arithmetic
.5=.2(17/20)+.8(.5)(12/22+x/80) solve for x the .5 is because you have to average the 2 parts of the second course
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3 replies | 310 view(s)
12-04-2018,
10:38 PM
sinx
replied to a thread
Help: Find line perpendicular to y=-2/3x-8/9 passing thru (6,-9)
in
Geometry and Trig
pka gives a nifty way to solve the problem, using the general eqn of a line, but it is easier for me to understand using the defn of slope. in any...
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7 replies | 313 view(s)
12-04-2018,
07:35 PM
sinx
replied to a thread
Help: Find line perpendicular to y=-2/3x-8/9 passing thru (6,-9)
in
Geometry and Trig
to find a perpendicular slope. https://www.mathwarehouse.com/algebra/linear_equation/parallel-perpendicular-lines.php
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7 replies | 313 view(s)
12-04-2018,
07:23 PM
sinx
replied to a thread
Please help I need to solve this: My Base pay is a 31.44 Overtime is 1.5 (base pay) =
in
Intermediate/Advanced Algebra
this where I saw a problem if they are already paying 18$ @ $31.44 The overtime premium should be paid @ $18(47.16)(.5) correct? no no, the premium...
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2 replies | 261 view(s)
12-04-2018,
06:37 PM
sinx
replied to a thread
Polynominal equation: x^4-5x^2+4=0 x(x^3-5x+4)=0
in
Beginning Algebra
you are close x4-5x2+4=0 (x2-4)(x2-1)=0 (x-1)(x+1)(x-2)(x+2)=0 because one of the terms has to equal 0 x=-2,2, and x=-1,1 alternatively,...
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34 replies | 1515 view(s)
12-04-2018,
06:07 PM
sinx
replied to a thread
Where do I start
in
Arithmetic
a,b,and c are the salaries; x=scale factor x=6772.5 x=6772.5/ then the bonuses are x(0.2)a, x(0.15)b, and x(0.1)c
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18 replies | 775 view(s)
12-02-2018,
10:23 PM
sinx
replied to a thread
Where do I start
in
Arithmetic
1 part = 6772.5/115=58.89 (divide by 115 to change your scale to 115%) 58.89 x 20=1177.82 x 3=3533.46 (bold is individual payments) 58.89 x 15 =...
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18 replies | 775 view(s)
12-02-2018,
09:45 PM
sinx
replied to a thread
Polynominal equation: x^4-5x^2+4=0 x(x^3-5x+4)=0
in
Beginning Algebra
x4-5x2+4=0 what drudge was saying; substitute w=x2 w2-5w+4=0 (w-4)(w-1)=0 w=4, and 1 then, since w=x2 x=sqrt4, and sqrt1
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34 replies | 1515 view(s)
12-02-2018,
09:24 PM
sinx
replied to a thread
Differential
in
Calculus
mv2z0(t)=mv2z(t)+mgz v2z0(t)=v2z(t)+gz 2vz0dvz0(t)=2vzdvz(t)+0 ----integration step, before this step and after is algebra----...
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5 replies | 315 view(s)
11-28-2018,
08:37 PM
sinx
replied to a thread
Real Life Math Problem
in
Arithmetic
type 2 per person =$73563.50/= $743.06 then, type 1 per person =$743.06(1.2)=$891.67 check; total type 2= $743.06(27)=$20062.62 total type...
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5 replies | 306 view(s)
11-16-2018,
10:18 AM
sinx
replied to a thread
Finding the domain of y = sqrt(3x + 2)
in
Intermediate/Advanced Algebra
domain 1/(x-1); x can't be 1 (you cannot divide by 0) domain for x is all numbers except for 1 sqrt (x-1); x has to be >or= 1 (you cannot take...
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17 replies | 822 view(s)
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