Answer:
1) -2x^(5)
2 -10b -7c
3 −
2
x
−
10
y
+
3
z
4 −
7
y
^(10
)−
6
x^(
6
)−
y
5 −
7
a
^(7)
−
7
a
−
3
b
6 −
4
a
−
3
c
−
2
d
7 −
2
b
^(7) −
8
a^(
6)
−
2
a
^(5)
−
7
b^(
4)
Step-by-step explanation:
Time taken by the car to cover 260 km is 2.6 hrs
Step-by-step explanation:
- Step 1: Find the speed of the car given distance covered = 150 km and time = 1.5 hrs.
Speed = Distance/Time = 150/1.5 = 100 km/hr
- Step 2: Find the time taken by the car to cover 260 km.
Time = Distance/Speed = 260/100 = 2.6 hrs
Use identity -
(a+b)² = a²+b²+2ab
(5+√3)² = 5²+(√3)² + 2(5)(√3)
= 25 + 3 + 10√3
= 28 + 10√3
= 2(14+ 5√3)
You required to find the value of d.
Always remember the concept that if you transpose "+" sign to the other side, it becomes "-" sign, and vice versa. Make sure that you arrange the like terms and constants. Solving the equation,
6d + 1 = 15 - d
6d + d = 15 - 1
7d = 14
d = 14/7 = 2
When transposing a multiplication, you divide it to the other side.
Verifying the solution,
6(2) + 1 = 15 - 2
12 + 1 = 13
13 = 13
Least to greatest: 0.4, 1/2, 60%
greatest to least: 60%, 1/2, 0.4
hope this helps :)