Answer:
-14
Step-by-step explanation:
-8(2)-[3(-5)-(-1)+4(2-6)]+4(-7)
opening the brackets
-8(2)-[-15+1+4(-4)]+4(-7)
-8(2)-[-15+1+4(-4)]+(-28)
-8(2)-[-15+1+(-16)]-28
-16-[-15+1+-16]-28
-16-[-15-16+1]-28
-16-[-31+1]-28
-16-[-30]-28
-16+30-28
-16-28+30
-44+30
-14
Answer:
3000 gallons of 12 percent is required
Step-by-step explanation:
We can use the formula
percentage * amount + percentage * amount = percentage*total amount
We have 9 percent and 15 percent wine that we are mixing to get 12 percent wine.
We are adding g gallons and 3000 gallons to get a total of (g+3000) gallons
Substituting this information in
.09 *g + .15 * 3000 = .12 (g+3000)
Distribute
.09g +450 = .12g+360
Subtract .9g from each side
.09g-.09g +450 = .12g-0.09g+360
450 = .03g + 360
Subtract 360 from each side
450-360 = .03g
90 =.03g
Divide each side by .03
90/.03 = .03g/03
3000 = g
x = 6
distribute the bracket on the right side of the equation and simplify
34 + 6x = 2 + 16x - 28
34 + 6x = 16x - 26 ( subtract 16x from both sides )
34 - 10x = - 26 ( subtract 34 from both sides )
- 10x = - 60 ( divide both sides by - 10 )
x = 6
Choose all answers that are correct.
A.
W = –13
B.
X = –8
C.
Y = –3
D.
Z = 3