Answer:
a = 0 or a = -7
Step-by-step explanation:
We are going to solve this quadratic equation by factorizing.
a² - 7a = 0
a(a - 7) = 0
a = 0 or a - 7 = 0
a = 0 or a = -7
Is there a picture to show it?
Ans is 392 mm and approx 400mm as perimeter of semi circle is pi r which is 22/7*16 + 40 mm which is the total of the two side of the triangle given.
I hope this will help you
Correct Answer: 4.5 cm²Two triangles of different sizes make up the logo. We are to find the difference in the areas of these triangle. Smaller triangle has a base of 2 cm and height 6 cm. Larger triangle has the base of 3 cm and height 7 cm.
Area of the triangle =

x Base x Height
So,
Area of smaller triangle =

cm²
Area of larger triangle =

cm²
The difference in the areas of triangles = 10.5 - 6 = 4.5 cm²<span />
Answer:
3,456 pictures
Step-by-step explanation:
It can take 72 pictures in an hour. (3600 seconds in an hour ÷ 50 seconds)
72 × 48 = 3456 photos