Answer:
See explanations below
Step-by-step explanation:
Given the equation 2( -x + 4) = 3, we are to find x;
2( -x + 4) = 3
Open the bracket;
-2x + 8 = 3
-2x = 3-8
-2x = -5
Multiply through ny -1
2x = 5
Divide through by 2
2x/2 = 5/2
x = 5/2 (Proved)
Answer:
x = 18
Step-by-step explanation:
ΔABC ≅ ΔDEC
∠ B ≅ ∠E
40 = 2x + 4
-2x = 4 - 40
-2x = -36
2x = 36
x = 36/2
x = 18
Answer:
$25,500
Step-by-step explanation:
Its an increase of $1,500 each year
Answer:
Step-by-step explanation:
Answer:
The farmer has 4 cows and 15 chickens.
Step-by-step explanation:
This question can be solved using a system of equations.
I am going to say that:
x is the number of cows
y is the number of chickens.
A farmer has a total of 21 cows and chickens altogether
This means that x + y = 21.
The animals have 54 legs
A cow has four legs, while a chicken has 2 legs. So
4x + 2y = 54.
From the first equation:
y = 21 - x
Replacing
4x + 2(21 - x) = 54
4x + 42 - 2x = 54
2x = 12
x = 6
y = 21 - x = 21 - 6 = 15
The farmer has 4 cows and 15 chickens.
