Let's say a table has enough seats for y students.
so (x)tables = 6 students
then, 6 x 4 = 24,
therefore 4 x (x)tables = 24 students.
Answer:
-168
Step-by-step explanation:
8 × -7 × 3
-56 × 3
-168
X + 3 (3) will be the answer
Answer:
C. 155.5 cm2
Step-by-step explanation:
area = 5*15 + (15+8)*7/2 = 75 + 80.5 = 155.5 cm2
Answer:
Step-by-step explanation:
Look at the picture.
The formula of an area of a triangle:
<em>b</em><em> - base</em>
<em>h</em><em> - height</em>
<em />
We need a length of a height.
Use the Pythagorean theorem:
We have:
Substitute:
<em>subtract 25 from both sides</em>
Calculate the area: