8 x 45 = (8 * 40) + (8 * 5) ...now that can be done mentally
Lets first make the factors
<span>1* 45 = 45
3 * 15 = 45
5 * 9 = 45
</span>So, we can pick up our number from here..
45 * 1 = 45
45 - 1 = 44
So your 2 numbers are 1 and 45..
Hope this helps.. :)
Answer: m= -2
b= 14
y= -2x+14
Step-by-step explanation:
First, you estimate to find the m. After you get -2, you plug the numbers in, and see what you add to get x.
Answer:
<h3>The answer is option A</h3>
Step-by-step explanation:
Surface area of a pyramid =
area of base + area of triangular faces
Since it's a square based pyramid
It's surface area is
area of base + 4( area of one triangular face)
Since the square has equal sides
<u>For square base </u>
Area of a square = l²
where l is the length
From the question l = 5
So we have
Area of square base = 5² = 25ft²
<u>For one of the triangular face</u>
Area of a triangle = ½ × base × height
base = 5
height = 6
Area = ½ × 5 × 6 = 15ft²
So the surface area of the pyramid is
25 + 4(15)
= 25 + 60
We have the final answer as
<h3>Surface area = 85 ft²</h3>
Hope this helps you
Answer:
3
Step-by-step explanation:
Rise over run
