jemshad
jemshad
28-08-2014
Mathematics
contestada
a+b=240
c+d=500
d-b+c=455
a+c=215
d?
Respuesta :
crisforp
crisforp
28-08-2014
a+b=240 => - a - b = - 240; but, a+c=215 => -b + c = -240 + 215 = - 35; but,
d-b+c=455 => d = 455 + 35 => d = 490.
Answer Link
VER TODAS LAS RESPUESTAS ( 55+ )
Otras preguntas
If A+ B = 76 A-b = 38 A ÷ B =?
2cos^2(x)-5cos(x)+2=0
The phylum with endoderm, mesoderm, and ectoderm is a. Cnidaria. b. Porifera. c. Platyhelminthes. d. all of the above.
What is the volume of a 3.00M(mol/L) solution made with 122g of LiF?
during 4 days the price of the stock of pev corporation went up 1/4 of a point down 1/3 of a point and up 7/10 of a point what is the net change
How much water, in liters, must be added to 0.5 L of 6 M HCl to make it 2 M? a. 0.33 b. 0.5 c. 1 d. 1.5 e. 2
if all sides of a cube are multiplied by 6, by what factor does the volume increase?
Joe is given five tests that all have a maximum score of 100 points. The mean of his test scores is 90. If all his tests have a different grade and all the grad
If x>2,then x2-x-6/x2-4=
Compute without using a calculator. 2 sin 765◦ + tan 1485◦ cot 135◦
