Zalika uses the formula V²=U²+2×a×s. When she substitute, V=4, U=3 and A=7 into the formula. She gets a=6+14S.
is she correct?, show how you worked out your answer.

She is wrong,

Step-by-step explanation:

V²=U²+2×a×s.

We have,

V=4, U=3 and A=7

Substituting,

4²=3²+2*7*s

16=9+14s

16-9=14s

7=14s

s=1/2

She gets, a=6+14S. which is wrong, even if you do not put value for a,

4²=3²+2*a*s

16-9=2as

7=2as

7/2s=a

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!