Answer: x=12
Step-by-step explanation:

The sum of the angles of the triangle is 180°:

Divide both parts of the equation by 4:

Answer:
why such complicated questions.....?
Step-by-step explanation:
Answer:
We need 232 mL of Compound A
Step-by-step explanation:
We know the ratio
A : B : total
4 3 4+3
4 3 7
We want 406
406 /7 =58
Multiply each part by 58
A : B : total
4*58 3*58 7*58
232 174 406
We need 232 mL of Compound A
.15 × 30.00 = 4.50
30.00 - 4.50 = 25.50
$25.50 is the sale price. I rounded 29.99 to 30.00
Answer:

Step-by-step explanation:
We are given the expression:

We want to find the value of the expression when y=8 and z=9. Therefore, we must substitute 8 in for y and 9 in for z.

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.
Multiply 5 and 8.

Multiply 2 and 9.

Subtract 18 from 40.

The value of the expression 5y-2z at y=8 and z=9 is 22.