Answer:
3rd option
Step-by-step explanation:
the denominator cannot be zero as this would make the expression undefined.
equating the denominator to zero and solving gives the values that x cannot be.
x² - 7x - 18 = 0 ← in standard form
(x - 9)(x + 2) = 0 ← in factored form
equate each factor to zero and solve for x
x - 9 = 0 ⇒ x = 9
x + 2 = 0 ⇒ x = - 2
then
x = - 2, x = 9 ← are the excluded values
Answer:
It's 31.5
Step-by-step explanation: The formula for right triangle is A=ab/2. A=area, a is one of the legs and b is the other leg. So you had for one leg 9 and for the other 7. You multiple 9 x 7 = 63. 63/2 = 31.5 for the area
answer:
the answer is 13
Step-by-step explanation:
9+4=13
Hello :
an equation is :
y - 2 = -2(x-1).....(<span>a line parallel to the line y = -2x + 1 ' same slope : -2)
y = -2x+4</span>
Answer:
$40
Step-by-step explanation:
we know that
The linear equation in slope intercept form i equal to
where
y is the amount of her mother's donation
x is the number of miles that Melissa walks
where
m is the slope
b is the y-intercept
In this problem
The slope is
The y-intercept is
substitute
so
For x=15 miles
substitute