The work inside parentheses cannot be carried out as shown, so the next approach to consider is multiplying the expressions inside the parentheses by -5 and 5 respectively:
-5 + 25x - 40x - 10 = -4x - 8x (Are you sure it's really "-4x - 8x"?)
Combining the x-terms:
-5 - 15x - 10 = -12x
Combining all like terms: -15 = 3x, so that x = -5 (answer)
Answer:
25% increase
Step-by-step explanation:
final value (20) -minus- starting value (16)
-------------------divided by ---------------- times * 100
starting value (20)
4
--- x 100
20
25%
Answer:
809.0
Step-by-step explanation:
Given the exponential function h (t) = 1250(0.865)^t
When t = 3
h(3) = 1250(0.865)^3
h(3) = 1250 (0.6472)
h(3) = 809.0
Hence the value to the nearest tenth is 809.0
Answer: x=3 and y=5
Step-by-step explanation: 11x-6y=3, 5x-8y=-25
11x-6y+6y=3+6y
11x/11=3/11+6y/11
x=3+6y/11
5(3+6y/11)-8y(11)/11
5(6y+3)-88y/11
30y+15-88y/11
88y-30y
58y
11(15-58y)/11=11(-25)
15-58y-15=-275-15
-58y/-58=-290/-58
y=5
x=3+6(5)/11
3+30
33
33/11
x=3
x=3, y=5
