Seudónimo Seudónimo

28-10-2014
Mathematics

contestada

What is the value of x in the equation 4x + 8y = 40, when y = 0.8?

4.6
8.4
10
12

Respuesta :

ollieboyne ollieboyne

28-10-2014

y   x
0.8 8.4
4.6 0.8
8.4   -6.8
10   -10
12   -14

Answer Link

28-10-2014

4x + 8y = 40

When y = 0,8 :

4x + 8*0,8 = 40
4x + 6,4 = 40
4x = 40 - 6,4
4x = 33,6
x = 33,6/4
x = 8,4

Answer : 8,4

Answer Link

Otras preguntas

Help Help Help Help Help Help

Maria’s monthly bank statement showed the following deposits and withdrawals: -$25.20, $52.75, -$22.04, -$8.50, $94.11 If Maria’s balance in the account was $

Liquid A has a density of 1.42 g/cm². 7 cm of liquid A is mixed with 125 cm of liquid B to make liquid C. Liquid C has a density of 1.05 g/cm. Find the density

Simplify the following surd expressions a) 9V3 -4V3 + V5 + 2V5 b) 10V2 + 4V7 - 6V2

which two pieces of evidence in paragraph 6 tell you that dickens was extremely popular in america Oxford Progressive English book 1123 Unit 2: Pottermania hits

Grace has $105 to buy a cake and pizza for her cousin’s birthday party. She knows she needs to set aside $25 for the cake, and the rest of the money she can spe

If y=-2 then 2y-1 equals

Minor Corporation purchases 5,000 shares of its $4 par common stock at $7 per share and also has an outstanding loan of $100,000. Under the provisions of the co

decrease £67 by 26% give your answer in pounds

Which is not a subject for an informal essay? A. call for action B. humorous anecdote C. personal experience D. serious reflection