Answer: 22.5°
Step-by-step explanation:
Complementary angles are the angles that when we add them together, they're equal to 90°.
Let the smaller angle be represented by x.
Then, the larger one will be 3 × x = 3x
We then add both angles together and equate them to 90°. Therefore,
x + 3x = 90°
4x = 90°
x = 90/4
x = 22.5°
The smaller angle is 22.5°
Answer:
Step-by-step explanation:
Product of 5 and a number: 5n
Six more than that would be 5n + 6
Finally, "six more than the product of 5 and a number, decreased by one" would be
5n + 6 - 1, or 5n + 5
Answer:
x = -1
y = 1
Step-by-step explanation:
x = 6y - 7
4x + y = -3
substitute x for 6y - 7 in the second equation
4x + y = - 3
4(6y - 7) + y = -3
open the parenthesis
24y - 28 + y = -3
combine like terms
25y - 28 = -3
add 28 to both sides of the equation
25y - 28 + 28 = -3 + 28
25y = -3 + 28
25y = 25
y = 1
now that you know y is 1, substitute it back into either equation
x = 6y - 7
x = 6 * 1 - 7
x = 6 - 7
x = -1
3*6.022*10^23 no of molecules in 3.0 moles of sucrose
A = 3.14 (2)^2
A = 3.14 (4)
A = 12.56
answer
A = 12.56