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Step2247 [10]
4 years ago
11

Help me with this question please

Mathematics
2 answers:
White raven [17]4 years ago
5 0
2.837 is the correct answer
Zanzabum4 years ago
4 0

Answer:

2.837

Step-by-step explanation:

T = 2π√(L/g)

= 2π * √(2/9.80665)

= 2.837 s .

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What is the area of the rectangle shown on the coordinate plane? Enter your answer in the blank. Do not round at any steps.
castortr0y [4]
<h3>Answer:</h3>

12 units²

<h3>Step-by-step explanation:</h3>

Counting half-squares around the perimeter of the rectangle, we find there are 10. Counting full squares inside the rectangle, we find there are 7. Then the total area is

... (1/2)·10 +7 = 12 square units

_____

<em>Alternate calculation</em>

The long side is the hypotenuse of a right triangle with legs 3, so has length 3√2. The short side is the hypotenuse of a right triangle with legs 2, so has length 2√2. The area is the product of these lengths, so is ...

.. area = (3√2)(2√2) = 6(√2)² = 6·2 = 12 . . . square units

8 0
3 years ago
Are the graphs of the equations parallel, perpendicular, or neither?x -3y = 6 and x - 3y = 9
seraphim [82]

The equation of a line in Slope-Intercept form, is:

y=mx+b

Where "m" is the slope of the line and "b" is the y-intercept.

By definition:

- The slopes of parallel lines are equal and the y-intercepts are different.

- The slopes of perpendicular lines are opposite reciprocals.

For this case you need to rewrite the equations given in the exercise in Slope-Intercept form by solving for "y".

- Line #1:

\begin{gathered} x-3y=6 \\ -3y=-x+6 \\ y=\frac{-x}{-3}+(\frac{6}{-3}) \\  \\ y=\frac{x}{3}-2 \end{gathered}

You can identify that:

\begin{gathered} m_1=\frac{1}{3} \\  \\ b_1=-2 \end{gathered}

- Line #2:

\begin{gathered} x-3y=9​ \\ -3y=-x+9 \\ y=\frac{-x}{-3}+(\frac{9}{-3}) \\  \\ y=\frac{x}{3}-3 \end{gathered}

You can identify that:

\begin{gathered} m_2=\frac{1}{3} \\  \\ b_2=-3_{}_{} \end{gathered}

Therefore, since:

\begin{gathered} m_1=m_2 \\ b_1\ne b_2 \end{gathered}

You can conclude that: The graphs of the equation are parallel.

3 0
2 years ago
Kathy has 30 coins, consisting of dimes and quarters that total $5.10. How many coins of each type does she have?
Aliun [14]
The answer is 92 because that is what it is
4 0
3 years ago
Question 5 of 10
boyakko [2]

Answer:

a

Step-by-step explanation:

snbxhchdjkakajiauzucucuhchxhdjdnsnananja

7 0
3 years ago
Who wants to be my best friend in brainly?
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