Answer:
6
Step-by-step explanation:
2y/3 + 1/3 = y/2 + 1/6
We want to eliminate the fractions
The least common multiple of 3,2 and 6 is 6
Multiply each side by 6 to get rid of the fractions
6(2y/3 + 1/3) = 6(y/2 + 1/6)
4y +2 = 3y +1
Answer:
1000
Step-by-step explanation:
2×500=1000
hope it helps
Answer:
8x+24
dimensions of the photograph
length - 7 inch
width - 5 inch
dimensions of the photo frame is 2x larger than both width and length
length - 7 + 2x
width - 5 + 2x
the perimeter is sum of all 4 sides
Perimeter = 2(7 + 2x) + 2(5 + 2x)
= 14 + 4x + 10 +4x
= 24 + 8x
correct answer is 8x+24
Answer:
Step-by-step explanation:
Xét tam giác AHC và tam giác BAC có
góc AHC = góc BAC =90°
Góc C chung
Suy ra tam giác AHC đồng dạng với tam giác BAC
Suy ra AH×BC=AB×AC
Suy ra h.a=b.c
Suy ra h^2.a^2=b^2.c^2
Suy ra h^2.(b^2+ c^2 )=b^2.c^2
( áp dụng định lí pytago vào tam giác ABC)
Suy ra 1/h^2=c^2+ b^2/b^2.c^2
Suy ra 1/h^2=1/b^2+1/c^2