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LiRa [457]
3 years ago
5

Please help!! I need to finish this quick

Mathematics
1 answer:
Natalija [7]3 years ago
4 0
Theorem: pythagorean

Equation: 5^2 + h^2 = 8^2

Solving:

25 + h^2 = 64
h^2 = 39
h =
\sqrt{39 }


Hope this helps!! :)
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In a theater, there are 4 long rows of chairs, each with an equal number of chairs. There are 5 short rows of chairs, each with
maw [93]
4(4+2) + 5(5+3)
4x6 + 5x8
24 + 40
64 is your answer
6 0
3 years ago
Lines 3x-2y+7=0 and 6x+ay-18=0 is perpendicular. What is the value of a?
BlackZzzverrR [31]

Answer:

\boxed{\sf a = 9 }

Step-by-step explanation:

Two lines are given to us which are perpendicular to each other and we need to find out the value of a . The given equations are ,

\sf\longrightarrow 3x - 2y +7=0

\sf\longrightarrow 6x +ay -18 = 0

Step 1 : <u>Conver</u><u>t</u><u> </u><u>the </u><u>equations</u><u> in</u><u> </u><u>slope</u><u> intercept</u><u> form</u><u> </u><u>of</u><u> the</u><u> line</u><u> </u><u>.</u>

\sf\longrightarrow y = \dfrac{3x}{2} +\dfrac{ 7 }{2}

and ,

\sf\longrightarrow y = -\dfrac{6x }{a}+\dfrac{18}{a}

Step 2: <u>Find </u><u>the</u><u> </u><u>slope</u><u> of</u><u> the</u><u> </u><u>lines </u><u>:</u><u>-</u>

Now we know that the product of slope of two perpendicular lines is -1. Therefore , from Slope Intercept Form of the line we can say that the slope of first line is ,

\sf\longrightarrow Slope_1 = \dfrac{3}{2}

And the slope of the second line is ,

\sf\longrightarrow Slope_2 =\dfrac{-6}{a}

Step 3: <u>Multiply</u><u> </u><u>the </u><u>slopes </u><u>:</u><u>-</u><u> </u>

\sf\longrightarrow \dfrac{3}{2}\times \dfrac{-6}{a}= -1

Multiply ,

\sf\longrightarrow \dfrac{-9}{a}= -1

Multiply both sides by a ,

\sf\longrightarrow (-1)a = -9

Divide both sides by -1 ,

\sf\longrightarrow \boxed{\blue{\sf a = 9 }}

<u>Hence </u><u>the</u><u> </u><u>value</u><u> of</u><u> a</u><u> </u><u>is </u><u>9</u><u> </u><u>.</u>

8 0
3 years ago
what is c to the negative 3 power and d to the 5 power over f to the 3 power and g to the negative 7 power
julia-pushkina [17]

Answer:

C^-3+d^5/f^3+g^-7

Step-by-step explanation:

The answer is as seen above

8 0
2 years ago
What are expressions that are equivalent to -4/3p - 2/5?
slega [8]

-4/3 - 2/5

HOPE THAT HELPS DUDE

3 0
3 years ago
Winnnie has 7 soccer trophies she wants to display in a array. how many different arrays can she use
Katarina [22]
She has 7 soccer trophies.

So lets assume she wants to display it in a straight line:

The 1st has 7 ways

The 2nd has  6 ways

The 3rd has  5 ways

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until the last.

Total = 7 × 6 ×5 × 4 × 3 × 2 × 1 = 5040 ways.
3 0
3 years ago
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