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2 years ago

Solve the system of equations 2x + y = -1.5 y = 3.50 + 15

1 answer:

6 0

So first y = 3.50 + 15 = 18.5
Next 2x + y = -1.5
2x = -1.5 -y
2x = -1.5 - 18.5 = -20
x = -20/2 = -10
So
x = -10
y = 18.5

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Vitek1552 [10]

Answer:

Step-by-step explanation:

using the rule of logarithms

log x - log y ⇔ log ( $\frac{x}{y}$ )

then

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2 years ago

Find g(-3)+5 if g(x)=2x-1

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Answer:

Step-by-step explanation:

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3 years ago

The axis of symmetry for the graph of the function f(x)=3x^2+bx+4 is x= 3/2. what is the value of b

Papessa [141]

Answer:

b = -9

Step-by-step explanation:

The function is given as :

$f(x)=3x^2+bx+4$

The axis of symmetry for this function is x = 3/2

It is required to find the value of b. The axis of symmetry of a parabola is a vertical line that intercepts its vertex at its horizontal coordinate. It can be given by :

$x=\dfrac{-b}{2a}$

Putting x = 3/2 and a = 3 we get :

$b=-2ax\\\\b=-2\times 3\times \dfrac{3}{2}\\\\b=-9$

So, the value of b is -9.

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3 years ago

You are a member of your local movie theater’s club. Every time you see a movie at the theater, you earn 2 advantage points. Whe

Snowcat [4.5K]

You have to watch 30 movies to earn a free movie pass.

Step-by-step explanation:

Given,

Points earned for each movie = 2 points

Current points = 40 points

Free movie pass = 100 points

Let,

x be the number of movies you have to watch.

2*number of movies + current points = 100

$2x+40=100$

Subtracting 40 from both sides

$2x+40-40=100-40\\2x=60$

Dividing both sides by 2

$\frac{2x}{2}=\frac{60}{2}\\x=30$

You have to watch 30 movies to earn a free movie pass.

Keywords: linear equation, division

Learn more about division at:

#LearnwithBrainly

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3 years ago

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katrin2010 [14]

Day 3 is A
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3 years ago