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3 years ago

The cubes on kayla's desk are arranged into 3 rows and 6 colums. How many cubes does kayla have on her desk? Show your work.

1 answer:

7 0

3 rows 6 columns *** *** *** *** *** *** Now you can count the stars shown in the diagram, or multiply 3 times 6, for your answer, 18 cubes

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A quiz consists of 10 true or false questions. To pass the quiz a student must answer at least eight questions correctly.

lys-0071 [83]

Answer:

The probability of the student will pass the quiz = .0546

Step-by-step explanation:

Given -

Total no of question = 10

If the student guesses on each question there are two outcomes true of false

the probability of guesses question correctly = $\frac{1}{2}$

the probability of success is (p) = $\frac{1}{2}$

the probability of guesses question incorrectly = $\frac{1}{2}$

the probability of failure is (q) = 1- p = $\frac{1}{2}$

If the student guesses on each question he must answered at least 8 question correctly

the probability of the student will pass the quiz = $P(X\geq8 )$

= P(X = 8 ) + P(X = 9) + P(X = 10 )

= $\binom{10}{8}(p)^{8}(q)^{10 - 8} + \binom{10}{9}(p)^{9}(q)^{10 - 9} + \binom{10}{10}(p)^{10}(q)^{10 - 10}$

= $\frac{10!}{(2!)(8!)}(\frac{1}{2})^{8}(\frac{1}{2})^{10 - 8} +\frac{10!}{(1!)(9!)} (\frac{1}{2})^{9}(\frac{1}{2})^{10 - 9} + \frac{10!}{(0!)(10!)}(\frac{1}{2})^{10}(\frac{1}{2})^{10 - 10}$

= $45\times\frac{1}{2^{10}} + 10\times\frac{1}{2^{10}} + 1\times\frac{1}{2^{10}}$

= $\frac{56}{2^{10}}$

= .0546

5 0

3 years ago

A machine is deisgned to fill 16 ounce bottles of shampoo.

dlinn [17]

Cool? Is there more to this question or?

3 0

3 years ago

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The customer asks, "What is the volume of these round soup containers?" Aniya doesn't have any measuring devices with her, so sh

Mice21 [21]

26 that’s what I got

8 0

3 years ago

The sequence of transformations that can be performed on quadrilateral ABCD to show that it is congruent to quadrilateral GHIj i

Andreas93 [3]

Answer:

1).

A. Reflection across the y axis.

2).

A. Clockwise rotation about point B and a translation 20 units down.

3 0

3 years ago

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Find x for equation 10 points

alexgriva [62]

Hi!

3x - 30 = x + 10

<h3>Solve by isolating x on one side. </h3><h3>Add 30 to both sides. </h3>

3x - 30 + 30 = x + 10 + 30

3x = x + 40

<h3>Subtract x from both sides. </h3>

3x - x = x - x + 40

2x = 40

<h3>Divide by 2 on both sides</h3>

2x/2 = 40/2

<h2>The answer is x = 20</h2>

Hope this helps! :)

-Peredhel

6 0

3 years ago