Answer:
Step-by-step explanation:
<em>Hey there!</em>
<u><em>Given info</em></u>
9(x + 4)
<u><em>Solve!</em></u>
9*x = <u>9x</u>
9*4 = <u>36</u>
<u><em>Answer</em></u>
<u>9x + 36</u>
D. 9x + 36
<em>Hope this helps :)</em>
Answer:
x = -9, 9.
Step-by-step explanation:
x^2 - 81 = 0
x^2 = 81
x = -9, 9.
The sum of digits of such a number is a multiple of 3. According to the divisiblity rule for 3, that is all that is required for a number to be divisible by 3.
Answer:
A.
B.Therefore the solution is defined on the interval:
6≤ x ≤ +∞
Step-by-step explanation:
Given differential equation is
Integrating both sides:
........(1)
Given y(0)= 6
it means y=0 when x=6
Putting x=6 and y=0 in the equation (1)
Equation (1) become:
Therefore
(B)
The quantity under root must greater than or equal to zero.
Therefore,
When x≥0 then the value of is real other wise the value of is imaginary.
Therefore the solution is defined on the interval:
6≤ x ≤ +∞
Answer:
The tree is approximately 91.2 ft tall.
Step-by-step explanation:
Hi there!
We're told:
- angle of elevation = 69 degrees
- there is a point 35 feet from the tree
If we were to draw this out, it would appear to be a right angle triangle. See the picture below.
Now, to solve for the height of the tree, we can use the sine law:
where a and b are two sides of a right triangle and A and B are the respective opposite angles
Let the height of the tree = h.
Side h is opposite of the angle measuring 69 degrees:
Let the angle opposite of the side measuring 35 feet = A.
Because the sum of a triangle's interior angles is 180 degrees, we know that A=180-90-69=21 degrees.
Use the sine law:
Therefore, the tree is approximately 91.2 ft tall.
I hope this helps!