Answer:
x + 3y = 21
Step-by-step explanation:
Equation of the line: y =mx+ b
Multiply the equation by 3
3y = -x + 21
x + 3y = 21
Answer:
4 (14.14=142=28)
Because 14 in 7 times-table, 142 in 7 times-table and 28 in 7 times-table.
Answer:
x = 2 or 1/4
Step-by-step explanation:
-13/4 -x= 1/2x -1
Collect like terms
-13/4+1=1/2x+x
Using LCM
(-13+4)/4=(1+2x²)/2x
9/4=(1+2x²)/2x
Cross multiply
9(2x)=4(1+2x²)
18x=4+8x²
Turn into quadratic and solve
8x²-18x+4
Using formulae method
-b±(√b²-4ac)/2a
Where a=8, b= -18 and c=4
(-(-18)±(√(-18)²-4(8)(4))/2(8)
(18±(√324-128))/16
(18±√196)/16
(18±14)/16
(18+14)/16 or (18-14)/16
32/16 or 4/16
2 or 1/4
Answer:
2
Step-by-step explanation:
8 times 1/4 equals 2
if this is wrong i am so sorry
Answer: 9%
Step-by-step explanation: as all the marks are out of 100 i suppose
so Ali got 58% at eng and 49% at math
so 58-49=9%
and that is how we get the answer
