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2 years ago

6

At noon the temperature was 6°C. Over the next five hours the temperature dropped another 8 degrees. Then every hour until 9:00

the temperature rose 4 degrees. What was the temperature at 9:00?

2 answers:

CaHeK987 [17]2 years ago

6 0

Answer: -14

Step-by-step explanation:

common knowledge

aksik [14]2 years ago

3 0

Answer:negative eleven

Step-by-step explanation: just ^thats the answer

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Find the area of a pentagon with an apothem of 7 centimeters

Alexeev081 [22]

If the side length of the pentagon is 19.27 centimeters. Then the area of the pentagon will be 337.225 square cm.

<h3>What is a polygon?</h3>

The polygon is a 2D geometry that has a finite number of sides. And all the sides of the polygon are straight lines connected to each other side by side.

The apothem of the pentagon is 7 cm.

Then the area of the pentagon will be

$\rm Area = 5 \times \dfrac{1}{2} \times apothem \times side \ length$

The side length of the pentagon will be

$\rm Side \ length = 2 \times 7 \tan 54^o \\\\Side \ length = 19.27\ cm$

Then the area will be

$\rm Area = 5 \times \dfrac{1}{2} \times 7\times 19.27\\\\Area = 337.225$

More about the polygon link is given below.

brainly.com/question/17756657

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Which of the following statements best describe an invertible function? Select all that apply.

iVinArrow [24]

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2 years ago

On a coordinate plane, a line goes through (negative 4, 0) and (4, negative 4). A point is at (2, 3).

Valentin [98]

9514 1404 393

Answer:

(b) x +2y = 8

Step-by-step explanation:

The only offered line that includes the given point is ...

x +2y = 8

__

We can check the other choices:

x + 2y = 2 +2(3) = 2+6 = 8 . . . matches B (not A)

2x +y = 2(2) +3 = 4+3 = 7 . . . . not a choice

_____

<em>Getting there from scratch</em>

The standard form equation for a line can be written from ...

(y2 -y1)x -(x2 -x1)y = constant

(-4 -0)x -(4 -(-4))y = constant . . . . using the given points (-4, 0) and (4, -4)

-4x -8y = constant

For standard form, we need the leading coefficient to be positive, and we need common factors removed. We can get there by dividing by -4.

x +2y = constant

The value of the constant will be whatever it takes for the given point to lie on the line. For (x, y) = (2, 3) to be a solution, we must have ...

x +2y = (2) +2(3) = constant = 8

The desired line has the equation ...

x +2y = 8

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