Answer:
Step-by-step explanation:
1 inch to 12 ft = x inches to 75 ft
1 / 12 = x / 75
cross multiply
12x = 75
x = 75/12
x = 6.25 or 6 1/4 inches
1 inch to 12 ft = x inches to 80 ft
1 / 12 = x / 80
cross multiply
12x = 80
x = 80/12
x = 6.67 or 6 2/3 inches
so the dimensions are : 6 1/4 inches by 6 2/3 inches <====
7) Use distributive property
3x(4x⁴ - 5x)=3x*4x⁴- 3x*5x = 12x⁵ - 15x²
8) When you open parenthesis with minus sigh in front of it, you need change sings of the terms on opposite. Then find like terms.
(5x⁴-3x³+6x)-(3x³+11x²-8x)= 5x⁴-3x³+6x -3x³-11x²+8x =5x⁴-6x³ - 11x²+14x
9)(x-2)(3x-4)=x*3x-4x-6x+8=3x²-10x+8
10) (x+6)²=(x+6)(x+6)=x²+6x+6x+36=x²+12x+36
For (x+6)², you can also use the formula of the perfect square
(a+b)²=a²+2ab+b²
For (x+6)² =x²+2*x*6 +6²=x²+12x+36
Answer:
5/3
Step-by-step explanation:
35 and 21 could be divided by a factor of 7.
35 ÷ 7 = 5
21 ÷ 7 = 3
So,
35/21 = 5/3
Answer:
Step-by-step explanation:
Im pretty sure the answer is 1.4 or D