$x-\ first\ number\\y-\ second\ number\\\\
 \left \{ {{x-y=2} \atop {x+y=48}} \right. \\\\ \left \{ {{x=2+y} \atop {x+y=48}} \right. \\\\Substution\ method\\\\
2+y+y=48\\\\
2+2y=48\\\\
2y=46\ \ \ |:2\\\\
\boxed{y=23}$

3 0

3 years ago

Isabel bought a new jacket for $48 before tax. She paid 6.5% in sales tax. How much was the sales tax?

AleksandrR [38]

C) $3.12
$48*.065=$3.12

6 0

3 years ago

D is partly constant and partly varies with V. When V = 40, D = 150, and when V = 54, D = 192. Find D when V = 73.

Temka [501]

D = mV + C , ( compare this to your familiar y = mx + b)
when V=40, D=150
150 = 40m + C **
when V=54, D=192
192 = 54m + C ***
subtract ** from ***
42 = 14m
m = 3
sub into ** , 150 = 120 + C
C = 30

so you have D = 3V + 30

sub in your given value of V

8 0

3 years ago

Solve for x.

Sveta_85 [38]

Answer:

all work is shown and pictured

8 0

3 years ago