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ella [17]
3 years ago
9

In a card game, there are

Mathematics
1 answer:
Anna71 [15]3 years ago
8 0

Answer:

$130.

Step-by-step explanation:

The game has 15 cards:

6 cards are blank.

2 cards are $3.

7 cards are $1.

In one game, you can expect to gain:

6*$0 + 2*$3 + 7*$1 = $0 + $6 + $7 = 13$

If you play 10 times, then you can gain $13*10= $130

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Heyy can you please help me posted picture of question
vichka [17]
We can use quadratic formula to determine the roots of the given quadratic equation.

The quadratic formula is:

x= \frac{-b+- \sqrt{ b^{2} -4ac} }{2a}

b = coefficient of x term = 4
a = coefficient of squared term = 1
c = constant term = 7

Using the values, we get:

x= \frac{-4+- \sqrt{16-4(1)(7)} }{2(1)} \\  \\ 
x=  \frac{-4+- \sqrt{-12} }{2}   \\  \\ 
x= \frac{-4+-2 \sqrt{-3} }{2} \\  \\ 
x= -2+- \sqrt{-3}

So, the correct answer to this question is option A
7 0
3 years ago
Simplify each expression. Write your answers in exponential notation.
GenaCL600 [577]

\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad
a^n\implies \cfrac{1}{a^{-n}}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\left( \cfrac{36b^3}{9a^5} \right)^3\implies \left( \cfrac{4b^3}{a^5} \right)^3\implies \stackrel{\textit{distributing the exponent}}{\left(\cfrac{4^3b^{3\cdot 3}}{a^{5\cdot 3}}\right)}\implies \cfrac{64b^9}{a^{15}}

3 0
3 years ago
Solve for y 9x - y = -6x + 4y
Lyrx [107]

Answer:

y = 3x

Step-by-step explanation:

Given

9x - y = - 6x + 4y ( subtract 4y from both sides )

9x - 5y = - 6x ( subtract 9x from both sides )

- 5y = - 15x ( divide both sides by - 5 )

y = 3x

4 0
3 years ago
Read 2 more answers
What are the dependent (y) and the independent (x) variables?
Alexandra [31]

Answer:

i donk know and i dont understand the question

Step-by-step explanation:

7 0
3 years ago
What are the possible values of x in 32x + 20 = 28x − 16x2?
maw [93]

Answer:

B .`-(1)/(8) stackrel(+)(-) (isqrt(79))/(8)`

8 0
3 years ago
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