Kevin -> 20x+45
shania -> 25x+5
20(20)+45=445
25(20)+5=505
after 20 hours, shania has read more pages
4y÷ 4 = 12÷4
y is greater than 3
Answer:
Step-by-step explanation:
<em>Use of formula: (a^b)^c = a^(bc)</em>
- (9^-9)^-3 =
- 9^ (-9×(-3)) =
- 9^27
Answer:
22 for x 45 for 4x+3 36 for 3x+2
Step-by-step explanation:
Trust me this is easy
By similar triangles:-
2 / x = x / 4
x^2 = 8
x = sqrt 8 = 2.83
y^2 = 4^2 + x^2
= 16 + 8
y = sqrt24 = 4.90