Four nickels,
because 1 dime=10¢ and so 21 x .10 = 2.10 and 1 nickel=5¢ so .05 x 4 = .20
2.10 + .20 = 2.30
I’m not sure if the explaining made sense but it’s 4 nickels :)
S=sophies age
l=llucas age
j=jessica's age
j is 6 times of s
j=6s
s is 2 years more than l'
s=2+l
in six years means everybody +6
j+6 is 4 times (l+6)
j+6=4(l+6)
the equations are
j=6s
s=2+l
j+6=4(l+6)
you would subisutte
6s+6=4(l+6)
6(2+l)+6=4(l+6)
undistribute the 2 in each
2(3(2+l)+3)=2(2(l+6))
divide both sides by 2
3(2+l)+3=2(l+6)
distribute
6+3l+3=2l+12
add like terms
9+3l=2l+12
subtract 9 from both sides
3l=2l+3
subtract 2l from both sides
l=3
therefor
s=2+l
s=2+3=5
s=5
6s=j
6(5)=j
j=30
lucas=3
sophie=5
jessica=30
Use the quadratic formula with a = 2, b = -5, and c = 1
x = -b ± sq rt b2 - 4ac
-------------------- <---------- Please note: sq rt is over entire expression of b^2 - 4ac
2a
x = - (-5) ± sq rt (-5)2 + 4(2)(1)
-------------------------------- <---------Please note: sq rt is over entire expression (-5)2 + 4(2)(1)
2(2)
x = 5 ± √17
---------
4
x = 5 + 1√17 OR x = 5 + -1√17
--- --- --- ----
4 4 4 4
Answer: x = 5 + 1√17 OR x = 5 + -1√17
--- -- -- --
4 4 4 4
Answer:
All of the above
Step-by-step explanation:
10, 100, 1000, 100000 all are rational numbers because you can write them as:
10/1 , 100/1, 1000/1, 100000/1
Answer:
19.79 ft
Step-by-step explanation:
Given data
We are given that the dimension of the room is
Length= 14ft
Width= 14ft
Required
The Diagonal of the room
Applying the Pythagoras theorem we have
D^2= L^2+W^2
substitute
D^2= 14^2+14^2
D^2= 196+196
D^2= 392
D= √392
D= 19.79 ft
Hence the distance from one corner to the other is 19.79 ft