The area of the square would be; 512 square inches.
<h3>What is the area of a square?</h3>
The area of a square can be calculated as the square of the sides of a given figure.
The area of a square = side x side
We are given that:
A side of a square = (8)³/² inches.
To find the area of a square we use the formula as;
Area = s²
Now Substitute with the side length in the rule given to get the area as follows:
Area=(8)³/²)²
Area = 8³
Area = 512 square inches
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I would subtract 4x from 7x to get x on one side.
Odd numbers are not divisible by 2. Only even numbers are visible by 2. Such as, 4,6,8.
Multiples of 10 do always end in 0.
& i'm not so sure about the last one.
Answer:
it is true. any whole number has a 0 following the decimal
Answer:

Step-by-step explanation:
we know that

Remember the identity

step 1
Find the value of 
we have that
The angle alpha lie on the III Quadrant
so
The values of sine and cosine are negative

Find the value of sine

substitute




step 2
Find the value of 
we have that
The angle beta lie on the IV Quadrant
so
The value of the cosine is positive and the value of the sine is negative

Find the value of cosine

substitute




step 3
Find cos (α + β)

we have




substitute


