1.68 belongs to rational numbers
Answer:
the answer to this question is 1.08
Answer:
13 and 16
Step-by-step explanation:
The coefficients are the numbers that are next to a variable. In the expression:
13a+16b
Both 13 and 16 are next to a variable. Therefore, 13 and 16 is the correct answer.
Answer:
The length is of 59 cm.
Step-by-step explanation:
Perimeter of a rectangle:
The perimeter of a rectangle with width w and length l is given by:
Width of 49 centimeters and a perimeter of 216 centimeters:
This means that 
The length is cm.
We have to solve the equation for l. So
The length is of 59 cm.
Complementary angles ⇒ the angles add up to 90°
∠A and ∠B are complementary ⇒ ∠A + ∠B = 90°
∠A + ∠B = 90°
Plug in the values for ∠A and ∠B:
(3x - 8) + (5x + 10) = 90
Open the brackets:
3x - 8 + 5x + 10 = 90
Combine like terms:
8x + 2 = 90
Subtract 2 from both sides:
8x = 88
Divide both sides by 8:
x = 11
Answer: x = 11
