Answer:
90 (angle in a semicircle)
U is 50 because supplementary 180-130=50
And so knowing that now
50+65+x=180 (because all triangles are equal to 180)
Add 50 and 65
115 +x=180
Subtract 115 on both sides
X=65
The answer is A
I suppose you wanted to say: 2(x+2)=x+10
In this case the solution is:
2x+x=x+10
3x -x= 10
2x= 10
x= 10/2
x=5
Answer: 6 pounds of French roast coffee and 14 pounds of Sumatran coffee was used.
Step-by-step explanation:
Let x represent the number of pounds of French roast coffee that should be added in the blend.
Let y represent the number of pounds of Sumatran coffee that should be added in the blend.
The total number of pounds of the mixture made is 20 lb. This means that
x + y = 20
The mixture sells for $8.30 a pound. The total cost of the mixture would be
8.3 × 20 = 166
This means that
9x + 8y = 166 - - - - - - - - -1
Substituting x = 20 - y into equation 1, it becomes
9(20 - y) + 8y = 166
180 - 9y + 8y = 166
- 9y + 8y = 166 - 180
- y = - 14
y = 14
x = 20 - y = 20 - 14
x = 6
Answer:
4x≥20
Step-by-step explanation:
x≥5
Multiply each side by 4
4x ≥4*5
4x≥20