The required area that the sprinkler will cover is 50 square feet. Option C is correct.
As mentioned in the question, a lawn sprinkler spins in a circle. The sprinkler covers a radius of 4 feet.
The surface area of any shape is the area of the shape that is faced or the Surface area is the amount of area covering the exterior of a 3D shape.
Here,
Area of the sprinkler,
= area of the circle
= πr²
= 3.14 × 4²
= 50.24
≈50
Thus, the required area that the sprinkler will cover is 50 square feet. Option C is correct.
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Since each card is about $1, the total cost is approximately 3 x 1 = $3.
Since he is buying about 10 cards, the total cost is approximately 10 x 0.97 - $9.70.
Since he is buying about 10 cards, the total cost is approximately 10+ 0.97 = $10.97.
Answer:
The second answer, Since each card is about $1, the total cost is approximately 3 × 1 =$3
The student is wrong, the correct expression is 9(n + 13).
Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.
Given the phrase “9 times the sum of a number and 13”
Let, n = the number
Therefore,
The sum of a number and 13 is:
n + 13
9 times the sum of a number and 13” can be written as,
9(n + 13)
Hence, the student is wrong.
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you cannot solve this because it is an expression. you need an equals to make it an equation.
-36x + 2/4 is an expression which can be simplified
-36x+1/2
explain how u got the answer
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