20)brian brought 166.66
21)range(highest-lowest)=200-50=150
23)not sure
25)not sure
26)23-3=20
Answer:
y = 2x - 1
Step-by-step explanation:
Note the difference between consecutive terms of y are constant, that is
1 - (- 1) = 3 - 1 = 5 - 3 = 7 - 5 = 9 - 7 = 2
Thus the equation is of the form y = 2x ± c ← c is a constant
Substitute values of x to determine the required value of c
x = 0 : 2 × 0 = 0 ← require to subtract 1 for y = - 1
x = 1 : 2 × 1 = 2 ← require to subtract 1 for y = 1
x = 2 : 2 × 2 = 4 ← require to subtract 1 for y = 3, and so on
Thus the required equation is
y = 2x - 1
To change a/x=d/a to <span>a²=cd, you need to take the following steps:
1. Pass the "a" to the left side and the "c" to the right side:
(a)(a)/c=d
(a)(a)=cd
2. Finally, multiply "a" by "a":
a</span>²=cd (By definition, when you have to multiply exponents with the same base, you should add the exponents. As you can see, both bases "a" have exponents 1, so, when you multiply them, you have to rewrite the base and then add these exponents: a^1+1=a²).<span>
</span>
Sample space = {6 cookies and 9 peanuts} = 15
1st draw :P(1 cookie) = 6/15
2nd draw P(also 1 cookie) = 5/14
3rd draw P(also 1 cookie) = 4/13
total probability = 6/15 x 5/14 x 4/13 = 4/91