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3 years ago

Please help Magan recorded the grade-level and instrument of everyone in the middle school

Mathematics

1 answer:

jeyben [28]3 years ago

5 0

Answer:

$Probability = \frac{11}{40}$

Step-by-step explanation:

Given

See attachment

Required

The probability that a 7th grader selected will play guitar.

From the attachment, we have:

$7th\ graders =11+8+8+13$

$7th\ graders =40$

7th graders that can play guitars are:

$Guitars = 11$

So, the probability is:

$Probability = \frac{Guitars}{7th\ graders}$

$Probability = \frac{11}{40}$

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If the point (-1-5) is reflected across<br> x-axis, whot aro tho coordinates of th<br> new point? ?

Gnoma [55]

Answer:

-1, 5

Step-by-step explanation:

With the graph, when you switch the x axis, you have to make the additive inverse for the y. If Y, additive the X.

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3 years ago

A sub sandwich shop offers 22 toppings to choose from. How many ways could a person choose a 4-topping sandwich?

ddd [48]

There are 7,315 different combinations, thus, the correct option is c

<h3>How many combinations are there?</h3>

If we have a set of N elements, the number of different combinations of K elements (such that K ≤ N) of these N elements that we can make is:

$C(N, K) = \frac{N!}{(N - K)!K!}$

In this case we have K = 4 and N = 22, replacing that, we get:

$C(22, 4) = \frac{22!}{(22 - 4)!*4!} = \frac{22*21*20*19}{4*3*2*1} = 7,315$

So there are 7,315 different combinations, thus, the correct option is c.

If you want to learn more about combinations:

brainly.com/question/11732255

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4 0

2 years ago

I don’t get this question at all

kodGreya [7K]

Answer:

-12

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Mike and Kim invest $12,000 in equipment to print yearbooks for schools. Each yearbook costs $5 to print and sells for $15. How

UkoKoshka [18]

<span>They must sell 1200 yearbooks to break even hope this helped</span>

5 0

3 years ago

A=5x+20

Vsevolod [243]

Not sure what you’re asking ? but

move the terms
-5x+20-a

divide both sides
x=-4+1/5a

solution:
x=-4+1/5a

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3 years ago