Ask question

Ask question

All categories

4 years ago

15

When surveyed,the student who preferred science class to English class was 5:4 if 90 students were surveyed how many students ch

ose science

1 answer:

svp [43]4 years ago

7 0

50. i’m sure you’re learning the proper mathematical way to do that, but my brain went ‘4+5 is 9. that’s 10 times less than 90’

You might be interested in

Please HELP??????????

Anton [14]

Answer:

<em>Answer is option</em><em> </em><em>c</em><em>)</em><em>1</em><em>/</em><em>5</em>

Step-by-step explanation:

$the \: formula \: states \: that \\ \sqrt[x]{a } \: can \: also \: be \: written \: as \: {a}^{ \frac{1}{x} }$

<em>so</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>1</em><em>/</em><em>5</em>

<em>HAVE</em><em> </em><em>A NICE DAY</em><em>!</em>

<em>THANKS FOR GIVING ME THE OPPORTUNITY</em><em> </em><em>TO ANSWER YOUR QUESTION</em><em>. </em>

7 0

3 years ago

One of the wagers in roulette is to bet that the ball will stop on a number that is a multiple of 3. (Both 0 and 00 are not incl

goldenfox [79]

Answer:

The player's expectation is a loss of 20 cents.

Step-by-step explanation:

In a game of roulette, there are 38 slots where the ball can stop.

The slots are numbered as follows: {0, 00, 1, 2, 3 ..., 36}.

So, N = 38.

The slots which are multiples of 3 are:

S = {3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33 and 36}

So, n (S) = 12.

Let <em>X</em> = the ball stops on a number that is a multiple of 3

The probability that the ball stops on a number that is a multiple of 3 is:

$P(X)=\frac{n (S)}{N}=\frac{12}{38}=0.32$

It s provided that the player wins double the amount bet if the ball stops on a number that is a multiple of 3.

Compute the player's expectation as follows:

$E(X)=\sum X\cdot P(X)$

$=(\$10\times 0.32)+(-\$5\times (1-0.32))\\\\=\$3.20-\$3.40\\\\=-\$0.20$

Thus, the player's expectation is a loss of 20 cents.

4 0

3 years ago

What is the x-value in the solution to this system of linear equations?

pickupchik [31]

Answer:

x = -3

Step-by-step explanation:

x + 3y = -5

x = -3y - 5

2(-3y - 5) - y = 11

-6y - 10 - y = 11

-7y - 10 = 11

-7y = 21

y = -3

5 0

3 years ago

Read 2 more answers

Story context that would be represented by the ratio 1:4

Doss [256]

In a class of 24 kids, for every 1 boy there are 4 girls

5 0

3 years ago

Ok I have a couple of questions please help on the one you know please!!

m_a_m_a [10]

Answer to Roberto's question:

4

Step-by-step explanation:

I'm not sure how to explain this one (my apologies).

Answer to Parallelogram JKLM question:

Q = 110° & ST = 9 ft

Explanation:

When reflecting this, the angle/side lengths remain the same. That means the information is going to be the exact same. All you have to do is figure out what corresponds to what from JKLM to QTSR.

If we reflect a figure across a horizontal reflection line through its center, the figure will just flip sides. Making L = K, M = J, and so on.

Basically, flip the shape upside down for this problem, and look at that and the shape without angles, find the corresponding letter to the angle to get your answer. In this case, Q is that corresponding letter. Meaning your answer for Q = 110°

When it comes to figuring out ST, since the shape is just flipped and all the lines making the parallelogram are equal to each other, the feet remains the same. Meaning ST = 9 ft.

Answer for a triangle with vertices equation:

(-6,7) (2,8) (-4,3)

This one I didn't know how to do but I looked up the problem and this was the answer.

Answer to Hailey's plywood question:

7 inches

Explanation:

This one's a trick question. The size of an object does not change no matter how much you rotate it. Therefore the answer is going to be the same.

Sorry this took so long, hope I helped!

6 0

4 years ago