Answer:
The area of this triangle is.. 
Step-by-step explanation:
6 x 10 divided by 2 = 30
Answer:
x=9
Step-by-step explanation:
7x-11 = 4x-2
7x-4x=11-2
3x=9
x=9
B)
así que si usted toma el número sesenta dos entonces se obtiene cuarenta y seis
Answer:
d. 0%
Step-by-step explanation:
9514 1404 393
Answer:
Step-by-step explanation:
When x represents the number, "the sum of 3 and a number" is (x+3). Twice that sum is 2(x+3). "Is 30" means this expression is equal to 30:
2(x +3) = 30 . . . . an equation for the given conditions
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We can solve this equation by dividing by 2:
x + 3 = 15
x = 12 . . . . . . subtract 3
The number is 12.