The missing number is 12
because the pattern is that the the numbers below and to the right of a number equals that number. ex: 3+4=7. so in order to find the missing number you have to do the opposite of addition, which is subtraction. (17-5=12)
Recall that the equation to find the perimeter of a rectangle is 2(L + w)
Since we know the length, we can make an equation:
2(3 + w) = 12
Divide both sides by 2:
(3 + w) = 6
w = 3
Now that we know both length and width, we simply have to find their product to solve for area:
a = L * w
a = 3 * 3
a = 9
The area of the rectangle is 9 cm^2.
Answer:
2/4 x 7/10 = 14/40, or 7/20.
5/6 x 3/4 = 15/24, or 5/8
3/4 x 2/3 = 6/12, or 1/2
3/10 x 4/5 = 12/50, or 6/25
i think you can finish the rest, all you have to do is multiply the numerator and the numerator, and the denominator and the denominator.
numerator = number on the top
denominator = number on the bottom
then put the two results:
[numerator x numerator]
____________________
[denominator x denominator]
hope this helped! ^^
Answer:
C. sin(90° - θ)
Step-by-step explanation:
A trig function of an angle equals the cofunction of the angle's complement.
The cofunction of cosine is sine, and the complement of θ is 90° - θ.
∴ cosθ = sin(90° - θ)
Answer: x=26
Step-by-step explanation:
Simplifying
2x + 3x + 50 = 180
Reorder the terms:
50 + 2x + 3x = 180
Combine like terms: 2x + 3x = 5x
50 + 5x = 180
Solving
50 + 5x = 180
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-50' to each side of the equation.
50 + -50 + 5x = 180 + -50
Combine like terms: 50 + -50 = 0
0 + 5x = 180 + -50
5x = 180 + -50
Combine like terms: 180 + -50 = 130
5x = 130
Divide each side by '5'.
x = 26
Simplifying
x = 26
