Answer:
6:7
Step-by-step explanation:
divide both sides by 7...
Answer:
x=
32
7+
3121
,
32
7−
3121
Step-by-step explanation:
h+16^2-8x-48=0
-7x+16x^2-48=0
x=
32
7+
3121
,
32
7−
3121
Answer and step-by-step explanation:
I believe it is 287. I am not entirely sure, but I believe that is the answer.
The unit rate of road construction is 2 miles per day.
Step-by-step explanation:
Given,
In 
days 
miles road is constructed.
To find
The rate of road constructed per day
Method
We will apply unitary method to solve it.
Now,
In days miles road is constructed.
In 1 day the road will be constructed = ÷ miles
= 2 miles
Let x be the number.
"twelve decreased by twice a number" ---> 12 - 2x
"8 times the sum of number and 4" ---> 8(x + 4)
12 - 2x = 8(x + 4)
12 - 2x = 8x + 32 (distributive property)
12 = 10x + 32 (add 2x to both sides)
-20 = 10x (subtract 32 from both sides)
x = -2 (divide both sides by 10)
