Answer:
b.
Step-by-step explanation:
Seats to minutes = 2 to 11:
2/11 = s/m.
When s = 16:
2/11 = 16/m
m = 11*16 / 2
= 176/2
= 88 minutes.
When s = 19:
2/11 = 19 / m
m = 11*19 / 2
m = 209/2
= 104.5 minutes.
Answer:11
Step-by-step explanation:
Boys : girls=7:1
Sum of ratio=7+1=8
Let them number of girls be y
Then they number of boys=y+66
Total number of pupils=y+y+66
Total number of pupils=2y+66
Number of girls=(girls 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
The number of girls is 11
Vertex = (3, 5)
focus = (3, 7)
directrix is y = 3
Answer:
A
Step-by-step explanation:
2b meaning two times the age then add three like the question says.
Answer:
+25;+18;-10
Step-by-step explanation:
Ok so let's break down the scenario step by step:
- His uncle gave him $25 so that means it's positive so <em>+</em><em>25</em><em> </em>
- Now he earned $18 so that means it is also positive so <em>+</em><em>18</em>
- And now he spent $10 which means it is negative so <em>-</em><em> </em><em>10</em>
(And of you want to find out the amount left with him,
(25+18)-10
=43-10
=$33)
Hope this helps :)
