Answer:
98
Step-by-step explanation:
Z as Zach; W as Wendy; L as Lee; C as Chen
We know that average score of Z,W, and L is 91, so:
(z + w + l)/3 = 91
z + w + l = 273
Average score W, L, C = 89, so:
(w + l + c)/3 = 89
w + l + c = 267
We take both:
(z + w + l) – (w + l + c) = 273 – 267
z – c = 6
Average score Z and C = 95
(z + c)/2 = 95
z + c = 190
(z + c) – (z – c) = 184
2c = 184
c = 92
z + c = 190
z + 92 = 190
z = 98
So, Zachs score is 98
To write an expression, you need operators such as -,+,or *. You will also require numbers, or in algebraic cases, variables. Two expressions that equal each other are considered <em>equations</em>. Know that <em>expressions</em> do not have equal signs, this is what separates them from a standard <em>equation</em>.
Some examples of expressions:
2 + 5
3 - 2
10 + 4
Some examples of equations
2 + 3 = 4 + 1
9 - 3 = 5 +1
2 * 10 = 5 + 15
Thank me later :)
(or just give brainliest)
Answer:
Step-by-step explanation:
Hello, if a and b are two zeroes of a polynomial P(x), we can write
We know that the sum is -3 and the product is 2, so
follows this pattern.
Thanks
Answer:
The tip left was $9.00
Step-by-step explanation:
You move the invisible decimal in 60 two places to make it .60
Next you multiply .15 by .60
the product is .09
Then you move the decimal point in .09 two places and get 9
