Answer:
-4y -12
Step-by-step explanation:
We cannot solve, but we can simplify
3(y-4)-7y
Distribute the 3
3y -12 -7y
Combine like terms
3y-7y -12
-4y -12
Answer:
ages of the twins are 11 years
Step-by-step explanation:
let the age of the twins each be X
Age of the older sister = X+9
This current year;
(X)(X)(X+9) - (X+X+X+9) = 2378
X³+9X² - 3X-9 = 2378
Solving the polynomial
X = 11
Hence ages of the twins are 11 years
Answer:
90%
90% of the teas were caffeinated.
Step-by-step explanation:
Total teas: 63+7= 70
63/70 x 100/1= 90%
90% of the teas were caffeinated.
9514 1404 393
Answer:
- there is no M in the diagram
- 145°
- 325°
- 104°
Step-by-step explanation:
EG and IF are assumed to be diameters of the circle. The measures of the two arcs created by a diameter are 180°.
1. There is no M
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2. arc EF = arc EG -arc FG = 180° -35°
arc EF = 145°
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3. Angle EDI is a vertical angle to angle FDG, so has the same measure: 35°. Long arc EGI will be 360° minus the measure arc EI
arc EGI = 360° -arc EI = 360° -35°
arc EGI = 325°
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4. Arc Gi is double the measure of arc GH, so is 38°×2 = 76°. Arc EI is the supplement to this:
arc EI = 180° -arc GI = 180° -76°
arc EI = 104°
Answer:
Step-by-step explanation:
Cos(Q) = adjacent to Q/Hypotenuse
adjacent = 15
Hypotenuse = 17.7
Cos(Q) = 15/17.7
Cos(Q) = 0.8475
The answer is C.
D is impossible. The cos of any angle can never be more than 1.
B is Tan(Q). They are not the same.
A is Sin(Q)
