Answer:
The number is <u>20</u>.
Step-by-step explanation:
In this question, it is said that 35% of a number is equal to 7, then what is that number?
So, let the number be <em>x</em>.
Now, according to the question :

Hence, the number is 20.

Area of a triangle = 1/2 ab sinC
In this equation the angle C is between the two adjacent sides ab
Since the lengths are equal we can call them both X
Hence 254= 1/2 (x)(x) sin53
By simplifying 508 = (x^2) sin53
So therefore x is the square root of 508 divided by sin53 which means the length of the sides is 35.8km to 3 significant figures
Answer:

Step-by-step explanation:
Given that,
Mass of a sample, m = 12 g
Heat absobed by the sample, Q = 96 J
It was heated from 20°C to 40°C.
We need to find the specific heat of a material. The heat absorbed by a sample is given by :

So, the specific heat of the material is
.
Answer: The total length of nine pieces of chain is 121.248 yards.
Explanation:
Since we have given that
Length of each chain = 13 yards, 1 foot, 5 inches
As we know that

On Converting it into larger units, we get 13.472 yards
Now, Number of pieces of chain =9
Length of 9 pieces is given by

Hence, Nine pieces of chain are 121.248 yards long .