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aksik [14]
3 years ago
9

Students at Lincoln middle school earn $5 for every 4 boxes of cookie dough sold during a fundraiser. Students at Williams middl

e school earn $7 for every 6 rolls of wrapping paper
Mathematics
2 answers:
muminat3 years ago
7 0

Answer:

5x4 = 20

7x6=42

Anvisha [2.4K]3 years ago
5 0

Answer:

5 and 4

7 and 6

Step-by-step explanation:

what is the question

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C.is the correct answer
Hitman42 [59]
<span>C.is the correct answer</span>
4 0
4 years ago
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Give the value of x for the equivalent ratio 3:8 x:24​
soldier1979 [14.2K]

Answer:

9

Step-by-step explanation:

3/8=x/24 (cross multiplication)

3*24=8x (we don't need to multiply 3 with 24 bc we will divide both sides by 8 so it will be easier to find the final value)

x=9

7 0
3 years ago
Read 2 more answers
How would you graph y = 2x + 3 and its inverse?
Umnica [9.8K]
1) To graph y = 2x +3, give  2 different value for x & find its related y value:

for instance if x = 0 , then y = 3

                   if x =  1,  then y = 5
Plot The coordinates of A(90,3) & B(1,5). You need just 2 point to draw a line.

2) The inverse of y=2x+3

a) Switch the x & y ===> x=2y+3

b) subtract 3 from both sides ===> x-3=2y+3-3===> x-3 = 2y

c) divide both sides by 2 ===> (x-3) / 2 =2y / 2 ==> 1/2(x-3)=y

And the inverse function of y = 2x+3 is y= 1/2(x+3)


7 0
3 years ago
Which operation between two polynomials will not always result in a polynomial?
Assoli18 [71]
In order to build a polynomial we need one or more terms. A term is a number, variable (denoted by a letter) or any combination of numbers and variables held together by multiplication. The following are examples of terms:

5, 3x, -5ab c^{2},  \frac{2x^{3}y }{5},  x^{6}

Now it might look like one of those involves division but it can be thought of as multiplication by (2/5). When we do this the exponents must be positive.

Polynomials are expressions made up of terms held together by addition and subtraction. Again, the exponents must be positive. Since polynomials are made up of the sum or difference of terms, adding or subtracting polynomials just leads to more polynomials. Here are some examples of Polynomials:

4xy-3 x^{2} +7,  \frac{2x}{5}-3abc-5j

Now let’s consider what happens if we multiply polynomials. As an example we use: (x+5)(2x-y)=2 x^{2} +10x-xy-5y

What you might notice is that multiplication will lead us to multiply terms (but multiplying terms gives us more term,as) and also to add or subtract terms but that just gives more polynomials. Therefore multiplication leads to more polynomials.

Finally, we consider division. Here a simple example will do the trick: 2 is a term and x is a term. Let us divide 2 by x. We get: \frac{\2}{x}=2 x^{-1}  which is not a polynomial because we have a negative exponent. 

Thus, the answer to your question is division. Division of polynomials will not always result in a polynomial.

_______END OF ANSWER___________
 is. 
5 0
3 years ago
At a restaurant, 80 percent of the diners are new customers P(N)=0.8, while 20 percent are regular customers P(N’)=0.2. And, 50
Rina8888 [55]

Answer:

c. 0.7404

Step-by-step explanation:

We can use Bayes Formula,

P(N|C) = \frac{P(C|N)*P(N)}{P(C)}

We know every single value of that expression except P(C). We can calculate C by dividing into 2 cases: if the customer is new or not.

By the total probability theorem, we  know that P(C) = P(C|N)*P(N) + P(C|N')*P(N') = 0.5*0.8 + 0.7*0.2 = 0.4+0.14 = 0.54

We replace P(C) on the equation above and we obtain

P(N|C) = \frac{P(C|N)*P(N)}{P(C)} = \frac{0.5*0.8}{0.54} = 0.7407

Thus, P(N|C) = 0.7407. Answer c is correct

I hope this helped you!

4 0
3 years ago
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