<span>3y-4x=20
Add 4x to both sides
3y=4x+20
Divide both sides by 3
Final Answer: y=4/3x + 20/7</span>
Answer:
-3
Step-by-step explanation:
you can tell that the awnser is negative because the coordinates of Y go down from 3 to 0.
Answer: 6.4 hours
Step-by-step explanation:
From the question, we are informed that Vik wrote the equation 470h = 3,008, where,
h = number of hours used by the plane.
To solve for h, goes thus:
470h = 3008
Divide both side by 470
470h/470 = 3008/470
h = 6.4 hours
Therefore, 6.4 hours was used by the plane.
Answer:
<em>1,500 mg </em>
<em>150c + 450f</em>
Step-by-step explanation:
Each can of soup has 150 mg of sodium and each peach frozen has 450 mg of sodium.
Piper plans to buy some of each product and wants to know how many milligrams of sodium are there in 4 cans of soup and 2 frozen dinners.
Since each can of soup has 150 mg of sodium, 4 cans have 4*150 = 600 mg of sodium.
Each frozen dinner has 450 mg of sodium, thus 2 of them have 2*450 = 900 mg of sodium.
There are 600 + 900 = 1,500 mg of sodium in this combination.
If Piper buys c cans of soup and f frozen dinners, they will have 150c + 450f milligrams of sodium.
C = # of carpenter hrs , b = # of blacksmith hrs
c + b = 30...c = 30 - b
20c + 25b = 690
20(30 - b) + 25b = 690
600 - 20b + 25b = 690
-20b + 25b = 690 - 600
5b = 90
b = 90/5
b = 18 <== hrs worked as blacksmith
c + b = 30
c + 18 = 30
c = 30 - 18
c = 12 <== hrs worked as carpenter
