How much you need pay?
65x(1-25%)
=65x75%
=65x0.75
=48.75
Your answer should be $48.75.
Answer:
- 8 and 4: A
- 8 and 6: C
- 8 and 10: B
Step-by-step explanation:
<u>8 and 4:</u>
Multiples of 8: 8, 16, 24
Multiples of 4: 4, 8, 12, 16
<u>8 and 6:</u>
Multiples of 8: 8, 16, 24
Multiples of 6: 6, 12, 18, 24
<u>8</u><u> </u><u>and</u><u> </u><u>10</u><u>:</u>
Multiples of 8: 8, 16, 24, 32, 40
Multiples of 10: 10, 20, 30, 40
Answer:
14. x=-2.5, y = -7
15. x=28 y = -20
Step-by-step explanation:
14. Let's solve this system by elimination. Multiply the first equation by -1.
-1*(4x-y)= -1*(- 3)
-4x +y = 3
Then add this to the second equation.
-4x+y = 3
6x-y= - 8
--------------
2x = -5
Divide each side by 2
x = -2.5
We still need to find y
-4x+y =3
-4(-2.5) + y =3
10 +y =3
Subtract 10 from each side.
y = 3-10
y = -7
15.I will again use elimination to solve this system, because using substitution will give me fractions which are harder to work with. I will elimiate the y variable. Multiply the first equation by 11
11(
5x+6y)= 11*20
55x+66y = 220
Multiply the second equation by -6
-6(9x+11y)=32*(-6)
-54x-66y = -192
Add the modified equations together.
55x+66y = 220
-54x-66y = -192
---------------------------
x = 28
We still need to solve for y
5x+6y = 20
5*28 + 6y =20
140 + 6y = 20
Subtract 140 from each side
6y = -120
Divide by 6
y = -20
Answer:
4.4* 1/3
4.4= 4 and 4/10 so 44/10*1/3= 44/30= 22/15
22/15
Step-by-step explanation:
