Google says. ..
Solving proportions is simply a matter of stating the ratios as fractions, setting the two fractions equal to each other, cross-multiplying, and solving the resulting equation. You'll probably start out by just solving proportions, like this: Find the unknown value in the proportion: 2 : x = 3 : 9.
Now let's do it
2. 2 is not shown in the picture
3. 2 1/2 sugar/7 1/2 flour = x sugar/1 flour
cross multiply: 2 1/2/7 1/2 = x/1
7 1/2x = 1(2 1/2) ... 15/2x = 5/2 ... x=5/2×2/15= 1/3
answer: 1/3 cup sugar = 1 cup flour ... 1/3s:1f
5. 1 1/3p/3 1/3c = ₩p/1c
cross multiply: (1 1/3)/(3 1/3) = ₩/1
3 1/3₩= 1(1 1/3) ... 10/3₩=4/3 ... ₩=4/3×3/10
₩=4/10=2/5 qt papaya
2/5 qt papaya = 1 qt carrot ... 2/5p:1c
<span>y+4=2/3(x+7)
</span><span>Multiplying both sides by the denominator which is 3:
</span>3(y+4) = 3(2/3) * (x+7)
3y+12=2x+14
Subtract 3y:
12 = 2x - 3y + 14
Subtract 14
-2 = 2x - 3y
The answer is -2. The inverse operation is when you do the opposite of the equation. In this case, you subtract 3 by 5. (not 5 by 3) Your result will be -2. Now plug -2 into x to check if it's true.
-2 + 5 = 3
3 = 3
It works! We can conclude here that x = -2.
I hope you understood! Have a good day :)
To find the diagonal of the pool, you need to use The Pythagorean Theorem which is a^2 + b^2 = c^2. We need to find c, so we substitute in the sides, and it doesn't matter how we substitute because we are adding positive numbers so the answer will always be the same. So, 31.22^2 + 25^2 = c^2. After we calculate this out we get c^2. To find the diagonal or c, we square root c^2 to get a final answer of 39.9961 or 40 feet
