we know that
A quick way to estimate the sum of two numbers is to round each number and then add the rounded numbers
case a) We round the number to the nearest hundred
so
Round up is equal to
Round up is equal to
Find the estimate sum
case b) We round the number to the nearest tens
so
Round up is equal to
Round down is equal to
Find the estimate sum
One foot is approximately 33.33 percent of a yard.
Given data:
To find the percentage of one foot in relation to a yard, we need to compare the length of one foot to the length of a yard and express it as a percentage.
One yard is equivalent to 3 feet, so we can set up the following proportion:
1 foot : 3 feet = x percent : 100 percent
Cross-multiplying, we get:
1 foot * 100 percent = 3 feet * x percent
100 percent = 3x percent
Dividing both sides by 3, we find:
x percent = 100 percent / 3
x percent = 33.33 percent (rounded to two decimal places)
Hence, one foot is approximately 33.33% of a yard.
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Answer:
5 - 2x
Step-by-step explanation:
Translating words to numbers can be tricky.
Here it says: "5 decreased by twice a number." So you have to imagine-- I started with Five things. Then there was a decrease --twice some variable.
5 take away twice something translates to
5 - 2x
Tricky, because most algebra expressions are written with variables first, then the constants. You could rewrite this expression as
-2x + 5
The equivalent expression for 7x + 2x + 6y is 9x + 6y. We get this by combining the like terms 7x and 2x.
The expression 7x + 2x + 6y can be simplified by combining like terms. 'Like terms' are terms that have the same variables and powers. The terms 7x and 2x are like terms because they both have the variable x.
When you combine 7x and 2x, you add the coefficients (numerical parts) together. So, 7x + 2x equals 9x. Therefore the equivalent expression for 7x + 2x + 6y is 9x + 6y.
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