Answer:
20 cm
Step-by-step explanation:
triangle area formula:
a = w times h / 2
a = area
w = width
h = height
Let's fill in the equation!
a = 4x10/2
a = 40/2
a = 20 cm
The value you should get is 34. I'm assuming n is variable we should use. "the square of a number increased by 9" = "n^2+9" in an algebraic expression. then you plug in. 5^2+9 and then solve. 5^2=25. 25+9=34
For this you want to do 20 - (-5) which equals 25. Therefore, the answer is 25°F.
Answer:
Domain: All real numbers
Domain: x≠2
Step-by-step explanation:
The given functions are
and
This implies that:
We expand to get:
We expand to get:
We group like terms to get:
This is a polynomial function, the domain is all real.
Also;
Factor to get:
Cancel common factors:
The domain is all real numbers, except numbers that will make the denominator zero.
Answer:
10
Step-by-step explanation:
Let the first number be x, and the second number be y.
x + y = 5
x - y = 2
Solve for x in first equation.
x + y = 5
x = 5 - y
Put x as 5-y in the second equation, and solve for y.
(5-y) - y = 2
5 - 2y = 2
-2y = -3
y = 3/2
Put y as 3/2 in the first equation and solve for x.
x + y = 5
x + 3/2 = 5
x = 7/2
The difference of their squares would be:
(7/2)² - (3/2)²
49/4 - 9/4
40/4 = 10