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2 years ago

I NEED HELP PLEASE !

Mathematics

1 answer:

MrRa [10]2 years ago

6 0

Answer:

x = 4, -2 1/2

Step-by-step explanation:

factors:

(2x + 5) (x - 4)

set each factor equal to zero:

2x + 5 = 0

2x = -5

x = -5/2

x - 4 = 0

x = 4

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This is how to solve this

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2 years ago

The following data represent weights (pounds) of a random sample of professional football players on the following teams. X1 = w

alexandr1967 [171]

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dalvyx [7]

Answer:

Slope = 2 y - intercept = ( 0 , -2 ) equation: y = 2x - 2

Step-by-step explanation:

We can begin solving by first understanding what slope is.

Slope is the rate of change in a line.

The formula for slope is:

(For any two points on a line)

m = y₁ - y₂ / x₁ - x₂

**m is the variable for slope

Two points on the line are: ( 6, 10 ) and ( 2, 2 )

Here is where we'll plug in the formula:

m = 10 - 2 / 6 - 2

m = 8 / 4

m = 2

Now that we have our slope, we only have to look at the graph to find the y-intercept.

The y-intercept is the point on the graph crosses the y-axis (this effectively means that the x value will always be 0)

When we look at the graph, we can see that the y-intercept is: ( 0, -2 )

All that's left is to right the equation in slope-intercept form.

The equation is arranged just as it says in the name:

y = mx + b

(m = slope b = y -intercept)

When we plug in our variables, the equation becomes:

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8 0

2 years ago

eight out of 10 dentist prefer Crest toothpaste.What is the ratio of dentist whi prefer Crest to those who do

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2 years ago

(y x 1) + 2 and y + 2, is it equivalent or non equivalent?

enot [183]

Given:

The two expressions are

$(y\times 1)+2$

$y+2$

To find:

Whether the given expression are equivalent or non-equivalent.

Solution:

If two expressions are looking different but they are equal after simplification, then they are called equivalent expressions.

The first expression is

$(y\times 1)+2=y+2$

The first expression is equal to the second expression after the simplification.

Therefore, the given expressions are equivalent.

5 0

2 years ago