Answer:
1. Yes the parentheses are necessary. To find a fourth of her regular hours you must find the total amount she works during her regular hours.
2. 6
Step-by-step explanation:
(For the second question)
4+8= 12
12 × ½ = 12 ÷ 2
12÷2 = 6
Answer:
The total money invested in the field will be 
Step-by-step explanation:
step 1
Find the dimensions of the field
Let
x -----> the length of the field
y -----> the width of the field
we know that
The perimeter of the field is equal to
so
----> equation A
------> equation B
substitute equation B in equation A and solve for y
Find the value of x
therefore
The length of the field is 130 meters and the width of the field is 35 meters
step 2
Find the area of the field
The area of the field is
substitute
step 3
Find the number of bags of seed
Divide the area by 460
Round up to the nearest whole number
step 4
Find the cost of the seed
step 5
Find the total money invested in the field
Answer:
Step-by-step explanation:
hello :
the numbers a1 , a2 ,a3
form three consecutive members of an arithmetic sequence means : 2a2 = a1+,a3
2 In(x + 3) = In(x + 2)+In(4x + 8)....(*)
now solve this equation use this note :
ln a^n = alna and : lna+lnb =lnab lna =lnb means : a=b ...a , b positif numbers
(*) equivaut : In(x + 3)² = In(x + 2)(4x + 8) and : x + 2 ,x + 3 , 4x + 8
are positifs numbers
(x + 3)² = (x + 2)(4x + 8)
x²+6x+9 = 4x²+16x+16
3x²+10x+7 =0
delta =10²-4(3)(7) 100 -84 = 4²
x1 = (-10-4)/6 = -7/3 reused
x 2 = (-10+4)/6 = -1 reused
conclusion : a. Such x does not exist.
It already is in disruptive property but to solve it using distributive property it become 3x+21.
