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Aleksandr-060686 [28]
3 years ago
12

What is the total cost in dollars of 15 cheeseburgers ?

e="x = 4y" alt="x = 4y" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
DedPeter [7]3 years ago
6 0
60 because If you replace y with 15 you will multiply and then get 60
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F(x)=7x-17/x^2+6x+9 <br>solve using fractional decomposition
Kazeer [188]

Answer:

f(x) = 7/(x+3) -38/(x+3)²

Step-by-step explanation:

The denominator is a perfect square, so the decomposition to fractions will involve both a linear denominator and a quadratic denominator.

You can start with the form ...

... f(x) = B/(x+3) + A/(x+3)²

and write this sum as ...

... f(x) = (Bx +3B +A)/(x+3)²

Equating coefficients gives ...

... Bx = 7x . . . . . B = 7

... 3B +A = -17 . . . . the constant term

... 21 +A = -17 . . . . filling in the value of B

... A = -38 . . . . . . . subtract 21 to find A

Now, we know ...

... f(x) = 7/(x+3) -38/(x+3)²

8 0
3 years ago
Solve the inequality if possible 4(3-2x)&gt;2(6-4x)
GenaCL600 [577]

Final Answer: No Solution

Steps/Reasons/Explanation:

Question: 4(3-  2x) > 2(6-  4x)

<u>Step 1</u>: Divide both sides by 2.

2(3 - 2x) > 6 - 4x

<u>Step 2</u>: Expand.

6 - 4x > 6 - 4x

<u>Step 3</u>: Since 6 - 4x > 6 - 4x is false, we have no solution.

No Solution

~I hope I helped you :)~

6 0
3 years ago
Read 2 more answers
Bob and will toss two coins. if both coins come up heads, bob pays will $6. will pays bob $2 otherwise. what is the expected val
Helga [31]
Each coin has a head and a tail, therefore when you toss two coins, you have 4 possible outcomes. You have two heads in only one of these outcomes, while the other three have at least one tail.

The expected value of the game is the price paid/gained times the probability of loss/victory:

E = (1 / 4) · (-6) + (3 / 4) · (2)
   = -3 / 2 + 3 / 2
   = 0

Bob expects to tie with Will.


6 0
3 years ago
Read 2 more answers
Mathswatch: Factorise x^2-42^2
marta [7]

Answer:

x^{2} -1764

Step-by-step explanation:

1) Evaluate the exponent:

x^{2} -1*42^2\\x^{2} -1*1764

2) Multiply the numbers:

x^{2} -1*1764\\x^{2} -1764

6 0
3 years ago
Write the equation of the line in a point-slope form: m = 9, (0, -7) .​
Tom [10]
Y=9x-7

Filler filler filler
3 0
3 years ago
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