Answer:
To be a function a graph must pass the vertical line test and the only one that does this is the bottom right one.
1.
-2(a + 6) = -2 · a - 2 · 6 = -2a - 12
2.
-22:
whole numbers
rational numbers
integers
3.
6 · (b - p) = 6(b - p)
4.
[5(14 - 2)²]/2 = (5 · 12²)/2 = (5 · 144)/2 = 720/2 = 360
5.
u + xy
u = 18; x = 10; y = 8, subtitute
18 + 10 · 8 = 18 + 80 = 98
6.
A = 479 ft²;
a - length of a side
A = a²
therefore
a² = 479 ⇒ a = √479 ⇒ a ≈ 21.886 ⇒ 22 (ft)
7.
(7 + 5) + 4 · 13 - 2 = 12 + 52 - 2 = 64 - 2 = 62
Answer:
The ratio of boys to girls is 4/3.
Step-by-step explanation:
Hi, to answer this question we have to use the number of boys as the numerator and the number of girls as the denominator.
The number of girls is: number of students - number of boys
Replacing with the values given:
<em>70 - 40 =30 girls
</em>
So, the ratio is:
40 /30
Simplifying:
4/3
In conclusion, the ratio of boys to girls is 4/3.
Feel free to ask for more if needed or if you did not understand something.