Anonym Anonym
  • 28-10-2014
  • Mathematics
Answered

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

4.6
8.4
10
12



Answer :

ollieboyne
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
eah
eah eah
  • 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

Other Questions

can you tell me what is papyrus?
why is ammeter connected in series in an electric circuit?
Which inequality represents all values of x for which the product below is defined? √5x ·√x+4 a.x>0 b.x≥0 c.x≤-4 d.x≥-4
what is the full form of ATP Can you help me pls
A number of students were asked this question: “How many cousins do you have?” The lowest answer given was 6. The highest answer given was 20. The total of all
what is water harvesting
A 50 meter path surrounds a rectangular garden . The width of the garden is two-thirds its length. find its area.
Find the distance between the pair of parallel lines, y = -2x+1 & y = -2x+16.
is tamarind a natural indicator? Give reasons.
can you tell me what is papyrus?