Seudónimo Seudónimo
  • 04-04-2015
  • Mathematics
contestada

72 - (blank) + 20 = 70 what number is the blank

Respuesta :

iloveonedirection
iloveonedirection iloveonedirection
  • 04-04-2015
[tex]72-x+20=70 \\ \\ 92-x=70 \\ \\ -x=-22 \\ \\ x=22 \\ \\ blank=22[/tex]
Answer Link
Аноним Аноним
  • 05-04-2015
[tex]72-x+20=70 \\ -x+92=70 \\ -x+92-92=70-92[/tex]

Divide both sides by -1

[tex] \frac{-x}{-1} = \frac{-22}{-1} =22[/tex]
Answer Link

Otras preguntas

Which change results in the formation of different substances? (1) burning of propane (2) melting of NaCl (s) (3) deposition of CO2(g) (4) solidification of wat
Which reaction is single replacement? (1) 2H2O2 --> 2H2O + O2 (2) 2H2 + O2 --> 2H2O (3) H2SO4 + Mg --> H2 + MgSO4 (4) HCl + KOH --> KCl + H2O
What type of formula represents the simplest whole number ratio of atoms of the elements in a compound? (1) molecular formula (2) condensed formula (3) empiric
We elect a U.S. Senator for how many years?
Which compounds are classified as Arrhenius acids? (1) HCl and NaOH (2) HNO3 and NaCl (3) NH3 and H2CO3 (4) HBr and H2SO4
What are two rights of everyone living in the United States?
Find the value of 15.0 Newton in pounds
What happened at the Constitutional Convention?
The coefficients in a balanced chemical equation represent (l ) the mass ratios of the substances in the reaction (2) the mole ratios of the substances in the r
help on questions 11 and 15 Add and simplify if possible