-11 - -3 = -8 hope that helps!!
Answer:
A. 2/20
Step-by-step explanation:
2/20 = 1/10
2/15 = 2/15
2/10 = 1/5
Answer:
Let the test scores be x1, x2, x3, x4
(x1 + x2 + x3)/3 = 88
x1 + x2 + x3 = 264
(x1 + x2 + x3 + x4)/4 = 90
264 + x4 = 360
x4 = 360-264
x4 = 96
Therefore he should get 96 marks in his 4th test to raise his mean test score to 90
The mean score is the total of all scores divided by the total no. Of tests
Hope this helps!
Y=-3x+4 and y=3x-2
so -3x+4=3x-2 is also true
-3x+4=3x-2
4=6x-2
6=6x
1=x
X0.10. xtimesy (y being every minute) = 8.40 (Money that she spent extra) Well 8.40 divided by 0.10 is 84. so she went 84 mins over
