W+b=30
5.50w+8.75b=204
Use simultaneous equations to solve. Replace w with 30-b and plug into the second equation.
5.50(30-b)+8.75b=204
165-5.5b+8.75b=204
3.25b=39
b=12
She sold 12 belts.
Answer:
x= -2
Step-by-step explanation:
7x+26+5x=2
7x+5x=12x
12x=2-26
12x= -24
(divide both sides by 12)
x= -2
Okay. In this scenario, you are solving a proportion. Let’s make the question mark symbol an “x”. Cross multiply the values. 10 * 3 is 30. 6 * x is 6x. 30 = 6x. Now, divide each side by 6 to isolate the “x”. When you do, you get x = 5. The unknown value is 5.
Answer:
x = 12.5
Step-by-step explanation:
The given triangle is a right angle triangle.
We cannot use the Pythagoras theorem as the lengths of all sides are not known. We will use triangular ratios here to solve the given problem.
As it is clear from the diagram that x is the hypotenuse of the triangle and 11 is the length of the base. We will use a ratio in which base and hypotenuse are used.
So,
cos θ= base/hypotenuse
cos 28=11/x
x=11/cos28
x=11/0.8829
x=12.45
Rounding off to nearest 10
x=12.5