Answer:
A
Step-by-step explanation:
3 times -2 is -6
-6 times 2 is -12
-12- (-2) is 10
30, 6
150, 30
180 ................
Answer:
Set B.
Step-by-step explanation:
Not A or C: as x goes up, y goes down. :(
D is correct, but not the best because B's is more clear, as when visualizing the graphs, B's makes a perfect line, as where in D, it is bumpier.
<h3>Answers:</h3><h3>a. Vertices of triangle ABC are: A, B, C</h3><h3>b. Sides of triangle ABC are: AB, BC, AC</h3><h3>c. The side between angle A and angle C is: side AC</h3><h3>d. The angle between sides AB and CA is: angle A</h3><h3>e. Scalene triangle</h3>
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Explanations:
- a. Each uppercase letter represents a point or angle of the triangle.
- b. Connect two points of a triangle and you get a line segment. The order of the letters does not matter. So AB is the same as BA.
- c. Like with part b, connecting two angles or points forms a segment.
- d. Note how the letter "A" is in both AB and CA, so this is the shared angle between the two segments.
- e. Sides AB, BC, and AC are all different lengths, so we have a scalene triangle. If you had two sides equal to each other, then you'd have an isosceles triangle. If all three sides are equal, then it would be equilateral.
There is no need for a diagram, but if you want, you can draw one out. See the attached image below for the diagram. This diagram should hopefully answer any questions you may have about the explanations above. There are many ways to draw the triangle, so your diagram might look different from mine.
X: volume of the 20% sol'n to be used in the mixture
y: vol. of the 80% sol'n to be used in the mixture
Then x+y must equal 30 gallons.
.20x: amt. of pure fertizer in the 20% sol'n
.80x: amt of pure fert. in the 80% sol'n
.60(x+y) = amt of pure fert in the 60% sol'n
Then:
.20x + .80y = .60(x+y) = .60(30)
Since x+y must equal 30, y=30-x, and
.20(x) + .80(30-x) = 18
.20x + 24 - .80x = 18
6 = .60x
x = 10
Use 10 gallons of the 20% solution and 20 gallons of the 80% solution.
The result will be 30 gallons of a 60% solution.