Question

find the mean proportional of 3 and 27

Answer 1

Answer:

15

Step-by-step explanation:

Proportion =1/2(3+27)

Proportion =1/2×30

Proportion =15

Answer 2

$\huge{ \bold{Question:}}$

find the mean proportional between:

(i) 3 and 27

$\huge{ \bold{Answer:}}$

${ \bold{(i) Let \: the \: mean \: proportional \: } }\\ { \bold{between \: 3 \: and \: 27 \: be \: b.}} \\ ∴3:b:: b: 27 \\→ 3 \times 27=b \times b \\ → b^ 2 =81 \\→ b \times b \: = 9 \times 9 \\ →b = 9\\{\bold{Answer: \: The \: mean \: proportional}} \\{\bold{ \:between \:3 \:and \:27 \: is \: 9.}}$

hope it helps you

please mark me as brainliest