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KIM [24]
3 years ago
10

Please help me! Thanks!

Mathematics
1 answer:
tekilochka [14]3 years ago
3 0

Answer:

A) 3(4x -4) -7x

Step-by-step explanation:

if you distribute the 3 and then simplify by combining like-terms, you will get 5x - 12

3(4x - 4) - 7x

12x -12 - 7x

5x -12

<em>~</em><em> </em><em>Luna</em><em> </em><em>P</em><em>.</em>

<em>^</em><em>_</em><em>^</em>

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Part c
ehidna [41]

The probability that the first slice of the cake will have the marble exists

7/66.

<h3>How to determine the probability using parts A and B?</h3>

Part A of the question demands that the volume of the cake be

estimated.

The volume of the cake exists, $V=\pi(\frac{d}{2} )^{2} h \\

$&V=\pi(\frac{9}{2} )^{2} * 4

$V=81 \pi

The part B of the question requires that the volume of each cut be

computed

The volume of each cut exists, V = 27

To estimate the required probability

We simply divide the volume of each cut by the volume of the cake.

$P=\frac{27}{81 \pi}

$P=\frac{1}{3 \pi}

Expand $\pi$

$&P=\frac{7}{3 * 22} \\

$&P=\frac{7}{66}

Therefore, the probability that the first slice of the cake will contain the

marble exists at 7/66.

To learn more about probability refer to:

brainly.com/question/24756209

#SPJ4

4 0
2 years ago
Find each of the following and explain your reasoning: 1) The length of segment BE ​
777dan777 [17]

Answer:

BE = 2.5

Step-by-step explanation:

find the midpoint of AD

(\frac{0+4}{2},\frac{2+7}{2})\\(2,4.5)\\BE=2.5

4 0
3 years ago
Which is a zero of the quadratic function f(x) = 16x?? + 32x - 9?
STALIN [3.7K]

Answer:

f(x) = 16x2 + 32x - 9

 

To find the "zeros", set f(x) = 0:

 

    0 = 16x2 + 32x - 9

 

The equation is solvable by factoring or by using the quadratic formula.  The factors (use the "ac" method) are:

 

    0 = (4x-1)(4x+9)

 

    x = 1/4 = 0.25 and x = -9/4 = -2.25

Step-by-step explanation:

6 0
3 years ago
I need help I'm stuck
Yuliya22 [10]
2/7. 
2/7 + 5/7 =1 Just add the numerator if the denominator is the same

5 0
3 years ago
Read 2 more answers
I need help. Find the value of each variable.
azamat

Answer:

x=8, y=4\sqrt{3}

Look up the 30-60-90 triangle rule

8 0
2 years ago
Read 2 more answers
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