Answer:
$144
Step-by-step explanation:
Let the money which Siti has be x
Therefore, the money June has will be x+240
First condition is that June gave 25% of her money to Siti, So this amount will be deducted from June's money and will be added in Siti's money.
Siti's money = x+ [25%(x+240)] June's money = x+240-[25%(x+240)]
= 1.25x + 60 = 0.75x + 180
Second condition is that Siti now gave 20% of her money to June.This amount will be deducted form Siti's money and added in June's money.
Siti's money = 1.25x+60-[20%(1.25x+60)]
= x+48
June's money = 0.75x +180+[20%(1.25x+60)]
= x+192
Difference between Sitit and June's money = x+192-x-48
= 144
Hence, June has $144 more money than Siti.
X + 5y = 1 . . . . (1)
8x - 2y = 3 . . . .(2)
Solution 1.
From (1), x = 1 - 5y
substituting for x in (2), we have:
8(1 - 5y) - 2y = 3
8 - 40y - 2y = 3
8 - 42y = 3
42y = 5
y = 5/42
x = 1 - 5(5/42) = 1 - 25/42 = 17/42.
Solution 2.
Multiply (1) by 8, to get:
8x + 40y = 8 . . . . . (3)
(3) - (2) = 40y - (-2y) = 8 - 3
42y = 5
y = 5/42
substitute for y into (3), to get:
8x + 40(5/42) = 8
8x + 100/21 = 8
8x = 8 - 100/21 = 68/21
x = (68/21)/8 = 17/42
Answer:
-5
Step-by-step explanation:
or, f(x) = -x^2+10x+16
or, f(7) = (-7)^2+10*-7+16 (-7*-7=49)
=49-70+16
=65-70
=-5
Answer:
<h2>x= -3</h2>
Step-by-step explanation:
16 I believe please mark BRAINLIEST
