The approximate depth of the canyon was 918 feet, and she hears her echo 1.7 seconds later.
An equation is an expression that shows the relationship between two or more variables and numbers.
Sound travels at approximately 1080 feet per second. Hence:
Marsala hears her echo 1.7 seconds later, hence:
Total distance = 1080 * 1.7 = 1836 feet
Depth of canyon = 1836 / 2 = 918 feet
The approximate depth of the canyon was 918 feet, and she hears her echo 1.7 seconds later.
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An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
The number is 25
An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
I am between24 and 34.
You say my name when you count by twos from zero.
This means,
= 2
You say my name when you count by fives from zero.
This means,
= 5
So,
25 is the number.
Thus,
The number is 25.
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The square root property seems to be another name for completing the square
x^2 + 5x + 6 = 0
We move the constant to the other side
x^2 + 5x = -6
We square half the linear coefficient and add that to both sides
x^2 + 5x + (5/2)^2 = -6 + 25/4
Now the left side is a perfect square,
(x + 5/2)^2 = 1/4
Here's the square root property part, we take the square root of both sides, remembering the ±
x + 5/2 = ± 1/2
x = -5/2 ± 1/2
Answer: x = -3 or x=-2
We check by plugging in these values to the original equation, and they work.
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x^2 + 6x = 16
Again we add half the linear coefficient, squared, to both sides
x^2 + 6x + 3^2 = 16 + 9
(x + 3)^2 = 25
Here comes the square root property, taking the square root of both sides:
x + 3 = ±5
x = -3 ± 5
x = 2 or x = -8
Again we check by substitution, and they both work
Answer: x = 2 or x = -8
To solve this problem you simple have to think which of the following option would carry your shape into itself. Or in simpler words which one would make it go 360 degrees around. The correct set of reflections and rotations would be:
Reflect over the y-axis, reflect over the x-axis, rotate 180°.
I hope it helps, Regards.
Answer:
Reflect over the y-axis, reflect over the x-axis, rotate 180°.
Step-by-step explanation:
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