7(a - 10) = 13 - 2(2a + 3)
7a - 70 = 13 - 4a - 6 = 7 - 4a
7a + 4a = 7 + 70
11a = 77
a = 77/11 = 7
a = 7.
The answer is 242 your welcome
Answer:
A expression
B Formula.
C. Identity
D. Equation.
Step-by-step explanation:
B is the formula for the perimeter of a rectangle.
C is an identity because we can fit any value to the variable.
D is an equation .
D. is an equation because only one value of x (3) fits.
Answer:
It is an isosceles triangle.
Angle R = 65 degrees
If side RT = 1 then sides SR and ST = 1.1831
Step-by-step explanation:
You still carry the decimals when subtracting fractions, if there is a decimal in the problem.