You can either make -5 or -7 positive numbers meaning either make it (5)(-7) or (-5)(7). Two negative numbers multiplied together make a positive number.
Hope this helps!
Answer:
C. An increase of 20%
Step-by-step explanation:
50/100 = 60/x
Cross products
50
x = 6000
Divide 50 by both sides
x = 120
60 is 120% of 50, so there is a 20% increase
Hope this helps!
-Jerc
Answer:
b
every dot equals the cords on the answers.
B. (0, +infinity)
When it is asked to know (b×a)(x), it is being asked to know what are the Y coordinates that are common in both graphs. When it a multiplication think of "and" - what are the Y that are on one graph and simultaneously on the other graph.
Design the graph of both functions on a calculator, or online, wherever. Then, look for when both functions have coordinates. All of them that are common to both graphs are the domain of (b×a)(x).
Answer:
Height of the ramp is 15.45 ft
Step-by-step explanation:
A ramp for wheelchair accessibility is to be constructed with an angle of elevation of 15 degrees
Height is 6 ft. the ramp forms a right angle triangle
LEt x be the height of the ramp. that is the hypotenuse
sin(theta)= opposite divide by hypotenuse
![sin(15)=\frac{4}{x}](https://tex.z-dn.net/?f=sin%2815%29%3D%5Cfrac%7B4%7D%7Bx%7D)
cross multiply it
x sin(15)=4
divide both sides by sin(15)
![x=\frac{4}{sin(15)}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B4%7D%7Bsin%2815%29%7D)
x=15.45
Height of the ramp is 15.45 ft