Since you know that interior angles of one transversal add up to 180, we can subtract 72 from 180 to solve for angle DAB. 180-72=108. Our answer is angle DAB=108°
Answer:
x = -2
Step-by-step explanation:
The given equation is a multi-step equation since it has the variable on both sides of the equal sign. However, the goal of any equation is to isolate the variable (get it by itself) by using inverse (opposite) operations to get the variable on one side of the equal sign and the numbers on the other.
5x - 5 = 3x - 9
1. Subtract '3x' from both sides:
5x - 3x - 5 = 3x - 3x - 9
2x - 5 = -9
2. Add '5' to both sides:
2x - 5 + 5 = -9 + 5
2x = -4
3. Divide '2' from both sides:
2x/2 = -4/2
x = -2
4.50 is the total value.
Explanation:
Let d = number of dimes and n = number of nickels.
If the number of dimes is 4 times the number of nickels, then:
d = 4n
Since ""Joey has 10 nickels**,
n = 10
To evaluate the number of dimes, substitute n = 10 into,
d = 4n
d = 4(10)
d = 40 dimes
We set up an equation to reflect the monetary values as follows,
.10d + .05n = "total value"
Substitute d = 40 and Joey's n=10 nickels into the equation.
.10(40) + .05(10) = 4.00 + 0.50 = $4.50 is the total value.