So the formula for that is:
(total - difference) ÷ 2 = smaller number
(total + difference) ÷ 2= larger number
In this case, Judy is more so we do second fomula:
(12 + 6) ÷ 2 = 9 hits homerun
and Marnie will hit 12 - 9 = 3 hits
Step-by-step explanation:
a. we simply subtract 3. from 2.
x + 2y + z = 15
- -3x + y + z = 2
--------------------------
4x + y 0 = 13
b. we multiply 3. by 3 and then subtract from 1.
2x - 4y + 3z = -7
- -9x + 3y + 3z = 6
-----------------------------
11x - 7y 0 = -13
c. we multiply the result of a. by 7, and then simply add a. and b., because the y terms have different signs already.
28x + 7y = 91
+ 11x - 7y = -13
--------------------------
39x 0 = 78
39x = 78
x = 2
d. we use this x = 2 in the result of a.
4×2 + y = 13
8 + y = 13
y = 5
e. using x = 2 and y = 5 in 2.
2 + 2×5 + z = 15
2 + 10 + z = 15
12 + z = 15
z = 3
the solution is therefore (2, 5, 3).
Answer:
9 feet
Step-by-step explanation:
Answer:
x = variable (a symbol, usually a letter, representing possible inputs)
4 = constant (numbers that stand alone and have a fixed value)
3 = coefficient (number multiplied by variable)
Answer:55
Step-by-step explanation: Whenever you see the word "sum" it means to add. So, 5+7+9+3+1+3+9+8+5+2+3=55
