syakirah159

-5 [4-(-3)(2)]

 =-5 [4-(-6)]

 =-5(4+6)

 =-5(10)

 =-50 #

9+10 = 19

61% of 90 dollar

= 61/100 x 90

= 6.1 x 9    

= 54.9 dollar #

The circumference of a circle is 2πj (2 x 22/7 x radius).

x⁷/ x^-3

= x^7-(-3)

= x⁷⁺³

= x^{10  #}

3+3 = 6

that's right, well done!!!

4.7 (2f - 0.5) = -6 (1.6f - 8.3f)

   9.4f - 2.35  = -6 (6.7f)

    9.4f - 2.35 = -40.2f

  40.2f + 9.4f = 2.35

            49.6f = 2.35

                   f = 2.35/49.6         

                     = 47/992

                     = 0.04737 #

x:y = 3:7

y-x = 56

The answer is;

y-x = 7-3

      = 4

y-x = 56/4

      = 14

x = 14x3

      =42 #

2+1=3

-3b+4 if b=4

=(-3x4)+4

=-12+4

=-8

14 and 2

because; 14x2 = 28 

because; 14+2 = 16

75+15x > 140

      15x > 140-75

      15x > 140-75

      15x > 65

          x > 65/15

          x > 65/15

          x > 13/3

          x > 4.3333 #

9.50(70+x) > 1000

   665+9.5x > 1000

           9.5x > 1000-665

           9.5x > 335

                x > 335/9.5

                x > 35.2631