Answer:
volume of a cone = 461.58cm³
Step-by-step explanation:
to find the volume of a cone
given the radius of the cone = 7cm
height of the cone = 9cm
recall that the volume of a cone = πr² h/3
volume of a cone = 3.14 x 7² x 9/3
volume of a cone = 3.14 x 49 x 3
volume of a cone = 3.14 x 147
volume of a cone = 461.58cm³
therefore the volume of a cone whose radius is 7cm , height is 9cm is evaluated to be equals to 461.58cm³
Answer:
5
Step-by-step explanation:
A1 = (h*b)/2
= ( (8-1)*(3-1) ) /2
= 7
A2 = (h*b)/2
= (2*2) /2
= 2
Ablue = A1 - A2
= 7 - 2
= 5
Answer:
y = mx + 5; m < 0
Step-by-step explanation:
The question mentions that the slope of the line is negative and the y-intercept is 5. The general form of the straight line is given by y = mx + c. Since "c" in the equation is the y-intercept, therefore, c = 5. This means that all the straight lines passing from the point (0,5) can be expressed in a general form y = mx + 5. However, the question mentions that the slope is negative and demands the general equation of all the negatively-sloped straight lines passing from (0,5). Therefore, for the condition to be met, m has to be negative. So the correct answer is y = mx + 5, where m is negative.