Madison represented the sentence "The product of 3 and the difference of Negative 4 and the quotient of a number and Negative 2
2 answers:
Answer: Madison used instead of
Step-by-step explanation:
The missing question is: "Which best describes Madison’s error?"
For this exercise you need to remember the following:
1. By definition, a "product" is the result of a multiplication.
2. A "difference" is the result of a subtraction.
3. A "quotient" is the result of a division.
4. The words "at most" indicate than the symbol for the Inequality is:
Let be "n" a number.
Knowing the information given above, you can determine that the sentence "The product of 3 and the difference of Negative 4 and the quotient of a number and Negative 2 is at most 5" can represented with the following inequality:
Madison used this inequality:
Notice that she is wrong, because she used instead of
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the operation:
Gives a square number.
<h3>How to get a perfect square?</h3>
A perfect square is the product of a number and itself.
As you can see in the example, 16 is a square number. Then let's try to get 16.
To get 16 we can use the difference:
20 - 4
So the first therm needs to be equal to 20, and the second equal to 4.
To write 20 in scientific notation we have:
To write 4 in in scientific notation:
Then the operation:
Gives a square number.
If you want to learn more about square numbers:
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Answer:
158.76 cm²
Step-by-step explanation:
Quadrilateral ABCD is composed of 2 right triangles
Construct the line BD, then
Δ ABD and Δ BCD are the 2 right triangles.
The area (A) of a triangle is calculated using
A = bh ( b is the base and h the perpendicular height )
Δ ABD with b = 18 and h = 7.5
A = × 18 × 7.5 = 9 × 7.5 = 67.5 cm²
Δ BCD with b = 15.6 and h = 11.7
A = × 15.6 × 11.7 = 7.8 × 11.7 = 91.26 cm²
Thus
area of ABCD = 67.5 + 91.26 = 158.76 cm²