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3 years ago

How do u solve 5x+3=4 Y=-3x

2 answers:

6 0

The information from the first equation gives you the information needed for the second. To solve the first equation you must rearrange the equation to isolate X. In order to do that you can first move the 3 to the other side of the equation by subtracting it from both sides (5x + 3 - 3 = 4 - 3) and then simplify that to (5x = 4 - 3) and further to (5x = 1). Then to move the 5 you must divide both sides by 5 so you get (5x/5 = 1/5) which can be simplified to (x = 1/5)

From this you can use the X value and input it into the second equation
Y = -3(1/5) and then solve for Y.

Hope this helps!

balu736 [363]3 years ago

6 0

5x+3=4
5x=4-3
5x=1
x=1/5
so here we have the x
y=-3x replace the x
y=-3(1/5)
y=-3/5
good luck

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Furkat [3]

Answer:

Step-by-step explanation:

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3 years ago

apex if you put down 15% on a $9000 car and pay monthly payments of $189.40 for 48 months what is the total price of the car

defon

The total amount payable for the car if you put a down 15% on a $9000 car and payment of $189.40 for 48 months will be:

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3 years ago

Find f(g(x)) simplify completely f(x)= x^2+5x+2 g(x)=3x

Sindrei [870]

Answer:

f(g(x)) = 9x² + 15x + 2

Step-by-step explanation:

f(x) = x² + 5x + 2
g(x) = 3x

Solving f(g(x))

f(g(x))
f(3x)
f(3x) = (3x)² + 5(3x) + 2
f(3x) = 9x² + 15x + 2
f(g(x)) = 9x² + 15x + 2

8 0

2 years ago

Read 2 more answers

"the life length x (in years) of a dvd player" is exponentially distributed with mean 5 years. what is the probability that a mo

loris [4]

The exponential distribution is:
$\lambda e^{- \lambda x}$
where $\lambda = \frac{1}{mean}=\frac{1}{5}$

The probability we want is how likely will a dvd player last more than 8 years, given it has already lasted 5 years
To find this, you use conditional probability.
$P(A|B) = \frac{P(A and B)}{P(B)}$
where A is P(x>8) and B is P(x>5)
To find these probabilities, integrate over the distribution:
$P(x \ \textgreater \ N) = \int_N^{\infty} \frac{1}{5} e^{-x/5} dx = e^{-N/5}$

Sub into conditional probability formula:

$P(x \ \textgreater \ 8 | x\ \textgreater \ 5) = \frac{P(x\ \textgreater \ 8)}{P(x\ \textgreater \ 5)} = \frac{e^{-8/5}}{e^{-5/5}} = e^{-3/5} = 0.549$

Final Answer: Given a dvd player is more than 5 years old, the probability that it will last another 3 more years is about 54.9%

3 0

3 years ago

What is b-4z/7=a in algebraic form?

Lera25 [3.4K]

(b - 4z)/7 = a
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Answer: b = 7a + 4z

8 0

3 years ago