We evaluate an algebraic expression by the determination of an unknown variable.
Evaluation is a systematic method used in solving most algebraic expressions in mathematics.
Let assume that we have a given algebraic expression where y is expressed in terms of x and;
y = 2x + 5 where (x = 4)
- Here, y and x are the variables;
y = 2(4) + 5
y = 8 + 5
y = 13
Learn more about how to evaluate algebraic expressions here:
brainly.com/question/4344214
Answer:
C
Step-by-step explanation:
The area of triangles is 1/2 x b x h.
Plug them in!
1/2 x 24 x 35
Simplify.
12 x 35
420 square inches
The height of the cone is 18.79 ft.
Step-by-step explanation:
Given,
The slant height (l) of the cone = 17 ft
The diameter = 16 ft
So, the radius (r) = 8 ft
To find the height (h) of the cone.
Formula
By Pythagoras theorem,
Perpendicular²+ base² = height²
Now,
Height² = 17²+8²
= 289+64
= 353
h = 
- 18.7888 = 18.79 (approx)
Hence,
The height of the cone is 18.79 ft.
