Answer:
Her class is 1 hour and 45 minutes long
Step-by-step explanation:
Answer:
W = 9.33 grams
X = 4.67 grams
Step-by-step explanation:
Given;
Mass of Z to be made = 14 grams
Composition of Z
W:X:Y = 2:1:3
To make 6 grams of Y requires 4 grams of W and 2 grams of X
Composition of Y (for 6grams)
W:X = 4:2 = 2:1
Substituting the composition of Y to Z
Z = W:X:Y = 2:1:3
Z = W:X:W:X = 2:1:2:1
summing them up, we have;
Z = W:X = 4:2 = 2:1
Since the final mixing ratio for W and X are 2:1, to make 14 grams of Z, we need;
W = 2/3 × 14grams = 28/3 grams
W = 9.33 grams
X = 1/3 × 14grams = 14/3 grams
X = 4.67 grams
Answer:
I suggest you use Socratic, it solves questions like this.
Step-by-step explanation:
Answer:
3rd option
Step-by-step explanation:
We first need to find the diameter of the circle.
We know this is a square because all sides are marked by a line so this means they are equal. Let find the diagonal of the square to find all parts of the square.
The diagonal of a square is
where a is the side lengths of the square.
So this means the diagonal of the square is
The diagonal is also the diameter of the main circle. The formula for circumference is
where d is the diameter.
So the diameter is
or
The third option is correct
Answer:
W = 17
L = 40
Step-by-step explanation:
To find the perimiter, we add 2L + 2W
So: 2L + 2W = 114
We also know that: L - 6 = 2W
So we can plug in L - 6 into the original equation
2L + L - 6 = 114
Add 6 to both sides
3L = 120
L = 40
Now we can solve for width using any of our equations. I'll use L - 6, because it's the easiest
L - 6 = 2W
40 - 6 = 2W
34 = 2W
17 = W
So
W = 17
L = 40
