Answer:
4x^2 +84x+440
840 in^2
Step-by-step explanation:
The length of the picture and frame is x+ 22+x= 2x+22
The width of the picture and frame is x +20+x = 2x+20
Area is length times width
A = (2x+22) *(2x+20)
We can FOIL to find the area
first 2x*2x = 4x^2
outer 2x*20 =40x
inner 2x*22 = 44x
last = 22*20 = 440
Add these together
4x^2 +40x+44x+440
4x^2 +84x+440
b. x=4
4x^2 +84x+440
4(4)^2 +84(4) +440
4*16 +336+440
64+776
840
Answer:
Answer is (x + 2)² - 7
Step-by-step explanation:
• We gonna achieve this through completing squares:
• Find the square of the half of the sum.
• Add 4 to the sum and subtract it from the product.
• Answer is proven
2*3+-1
6-1
5=5
the answer is b (3,-1)
Multiply the Number of attempts with the probability
160 * 0.8 = 128 attempts made (c)
