Answer:
Answer: A, (3x+5)(x+7)
Step-by-step explanation:
3x*x = 3x^2
3x*7=21x
5*x= 5x
5*7=35
Then, Combine like terms.
21x+5x= 26x
3x^2+26x+35
And that's it, pretty simple.
Answer:
What is the test that you can do to tell if a graph represents a function?
A
the horizontal line test
B
the vertical line test
C
the expression test
D
the litmus test
Step-by-step explanation:
d
Q1. A Q2. ? Q3. C Q4. ? Q5. A
sorry i did not know 2 and 3
Answer:
x = 816 kilometers per hour.
Step-by-step explanation:
Given the following data;
Distance traveled by Kirk = 450km
Distance traveled by Thor = 408 km
Let the average driving speed of Thor be x.
Translating the word problem into an algebraic equation;
k = x + 6
We know that the time taken to cover a distance by an object with speed is given by the formula;
Time = distance/speed
Substituting into the equation, we have;
408/x = 405/x + 6
Cross-multiplying, we have;
408*(x + 6) = 405*x
408x + 2448 = 405x
408x - 405x = 2448
3x = 2448
x = 2448/3
x = 816 kilometers per hour.
Step-by-step explanation:
Draw the triangle formed by the ray.
The hypotenuse of the triangle is:
c² = a² + b²
c² = (-5)² + (2√7)²
c² = 25 + 28
c = √53
Therefore:
cos β = -5 / √53
Or, as a proper fraction:
cos β = -5√53 / 53