Answer:
c = 9
Step-by-step explanation:
9c - 10 = 2c + 53
9c =2c + 63
7c = 63
c = 9
Given:
Area of rectangle =
sq. feet.
Width of the mirror =
feet.
To find:
Whether it will fit on the wall whose length is 5 foot.
Solution:
We know that, area of a rectangle is


Substituting the given values, we get






So, length of mirror is 4.75 feet which is less than 5 feet.
Therefore, the mirror will fit on the wall.
The correct algebraic expression is X ÷ 5 - 17 = 41
<h3>What is an algebraic expression?</h3>
An algebraic expression is a term that refers to a way of representing mathematical operations in which letters and numbers are combined, related to signs of the operations such as:
- Addition (+)
- Subtraction (-)
- Multiplication (×)
- Division (÷)
- Empowerment (
)
According to the above, we can infer that the correct algebraic expression would be:
In this algebraic expression the letter X represents a number that we do not know and we must find.
Learn more about algebraics in: brainly.com/question/953809
Answer:
See below.
Step-by-step explanation:
Squaring a number means to multiply the number by itself.
For example, 3^2 means 3 * 3.
8^2 means 8 * 8.
(-6)^2 means (-6) * (-6).
In each case above, you see that the number that is squared is multiplied by itself.
In this case, (-4.5)^2, squaring the number -4.5, means multiply the number -4.5 by the number -4.5
(-4.5)^2 = (-4.5) * (-4.5)
Now we need to actually multiply -4.5 by -4.5
When you multiply a negative number by a negative number, the result is positive, so the product of -4.5 and -4.5 is a positive number. To find that number, you multiply 4.5 by 4.5
4.5 * 4.5 = 20.25
Therefore, (-4.5)^2 = 20.25
To factor out the coefficient of a variable you divide it by the sum.