Answer:11
Step-by-step explanation:
Boys : girls=7:1
Sum of ratio=7+1=8
Let number of girls be y
Then number of boys=y+66
Total number of pupils=y+y+66
Total number of pupils=2y+66
girls only=(girl ratio)/(sum of ratio) x (total number of pupils)
y=1/8 x (2y+66)
Cross multiply
y x 8=2y + 66
8y=2y + 66
Collect like terms
8y-2y=66
6y=66
Divide both sides by 6
6y/6=66/6
y=11
There are 11 girls
Answer:
D
Step-by-step explanation:
Negative numbers are less than zero.
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Answer:
hukiiiiibcgczxjwisisisigyjgffguhhhijhf
Step-by-step explanation:
xcfgghsjwueueueuririgg&jjikhffxghjh
Answer:
x = -3
Step-by-step explanation:
The graph is symmetrical about the vertical line through its vertex:
x = -3
Answer:
300,000 + 50,000 + 9,000 + 800 + 40 + 1
Step-by-step explanation:
