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3 years ago

-7y+11y+9=-3 what does y equal

Mathematics

1 answer:

Lilit [14]3 years ago

3 0

Answer:

y=-3

Step-by-step explanation:

-7y+11y+9=-3

1) Combine alike terms:

4y+9=-3

2) subtract a 9 on both sides:

4y=-12

3) divide both sides by 4:

y=-3

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Step-by-step explanation:

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3 years ago

Which points are on the graph of the equation - 3x + 6y + 5 = -7?

ludmilkaskok [199]

Answer:

C and E

Step-by-step explanation:

To solve this problem, let's plug in each coordinates into the equation.

$-3(-3) + 6(6) + 5 = -7$
$9 + 36 + 5 = -7$
$50 = -7$
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A. cannot be the answer, as 50 does not equal -7.

$-3(-2) + 6(0)+5=-7$
$6+0+5=-7$
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B. cannot be the answer, as 11 does not equal -7.

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D. cannot be the answer, as -31 does not equal -7.

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2 years ago

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iren [92.7K]

Your answer is 158 hope this helps.

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3 years ago

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Find an explicit rule for the nth term of a geometric sequence where the second and fifth terms are -6 and 162, respectively. Pl

kicyunya [14]

Hello,

$u_{0} =a\\
 u_{1} =a*r\\
 u_{2} =a*r^{2}=-6\\
 u_{3} =a*r^{3}\\
 u_{4} =a*r^{4}\\
 u_{5} =a*r^{5}=162\\
....\\
\boxed{ u_{n} =a*r^{n}} \\

\dfrac{ 162}{-6} = \dfrac{ u_{5} }{ u_{3}} = \dfrac{ a*r^{5}}{ a*r^{2}} =r^3= -27\\
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\boxed{ u_{n} =-\frac{2}{3}*(-3)^{n}=(-1)^{n+1}*2*3^{n-1}} \\

$

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3 years ago

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