Answer:
x = 30
Step-by-step explanation:
10% fat = 0.1x
x = the solution, what we want to find
120 grams of 20% fat = 0.2 * 120
What we want is mixture of 18%
So....
0.1x + 0.2 * 120 = 0.18 (x + 120)
Solve:
0.1x + 24 = 0.18 (x +120)
0.1x + 24 = 0.18x + 21.6
24 = 0.08x + 21.6
x = 30
Since 5 miles is equaled to 4 inches multiply the 8 miles by 4/5 to get 6 2/5
<u>√3</u>
x is the length of the third side
x²+1² = 2² { Pythagorean Theorem}
x²+1 = 4 {Simplify}
x²=3 {Subtract 1 from each side}
x=√3 {Take the square root of each side}
The Length of the third side is √3
#
Question 1
2+2x
2+2(7)
2+14
16 dollars
question 2
3+2h=p
Okay. Ms. Erma has an oatmeal recipe calling for 2/5 cup of raisins and she has 4/5 cups of raisins right now. To find the batches of cookies she can make, we can divide fractions. In order to divide fractions, keep the first fraction the same, change division into multiplication, and flip the second fraction over. In this case, 4/5 is our dividend, so we keep that the same. Division becomes multiplication. 2/5 gets flipped over into 5/2, because that's our divisor. The expression is like this:
4/5 * 5/2
Now, multiply straight across. 4 * 5 is 20. 5 * 2 is 10. 20/10 is 2 when simplified, There. Ms. Erma can make 2 batches of cookies with 4/5 cup of raisins.
