Which of the following is a like radical to 3 sqrt 7x? a. 4(3 sqrt 7x) b. sqrt 7x c. x(3 sqrt 7) d. 7 sqrt x

a

Step-by-step explanation:

Options A and B

i.e., A. 4(3) and B.

Step-by-step explanation:

Like radicals are similar to like terms.

For example,

x, 2x, -10x, , 7.3x are like terms.

are some more examples of like terms.

Similarly, like radicals are:

etc.

Hence, from the given options, like radicals to are:

A. and B.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13