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3 years ago

HELP/ Can someone teach me how to do this

Mathematics

1 answer:

otez555 [7]3 years ago

5 0

Answer:

slope = 5

Step-by-step explanation:

The slope is the rate of change of the function. Although not mathaticaly rigorous, the slope of the line is the same as the slope of an uphill road. It's just a number that shows you how much the function change for every tiny step you take to the right. In order to calculate it, given that we are talking about a line which slope is constant, you have two pick two points. The slope is the difference of their y coordinates, divided by the difference of their x coordinates.

For example let's pick the following two points:

A(0,0) and B(1,5)

slope = ( y_B - y_A ) / ( x_B - x_A )

= ( 5 - 0 ) / ( 1 - 0 ) = 5

However, the above is a mechanism you can follow even when the exercise is a tough one.

To sum up, the slope is a number that shows you how much tilted is the graph. For every step to the right, how much does the value of the function change?

Hope i helped ;)

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Which expression is equivalent to the given expression using the commutative property of addition.

9966 [12]

The given question is wrong.

Question:

Which expression is equivalent to the given expression using commutative property of addition? 2(x + b) + 3(xa).

Answer:

Option C:

3(xa) + 2(x + b)

Solution:

Given expression is 2(x + b) + 3(xa).

To find the equivalent expression using commutative property of addition.

Let us first define the commutative property of addition.

a + b = b + a

You can add in any order.

Now, write the given expression using commutative property.

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3 years ago

Solve the system of equations. \begin{aligned} & -10x+3y = 5 \\\\ & x=y-4 \end{aligned} −10x+3y=5 x=y−4

Ksenya-84 [330]

Answer:

x = 1

y = 5

Step-by-step explanation:

You can use either substitution or elimination for this problem. I will use substitution.

Step 1: Replace x in the 1st equation

-10(y-4) + 3y = 5

-10y + 40 + 3y = 5

-7y = -35

y = 5

Step 2: Plug <em>y </em>into an original equation to find <em>x</em>

x = 5 - 4

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And you have your final answers!

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

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Nimfa-mama [501]

Answer:

The correct option is (A) No real solution.

Step-by-step explanation:

The expression provided is a quadratic equation.

$8x^{2}-10x+15=0$

The roots of a quadratic equation are:

$x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{ 2a }$

Here,

a = 8

b = -10

c = 15

The conditions to determine real and complex roots are:

If $b^{2}-4ac$ then the quadratic equation has two complex roots.
If $b^{2}-4ac>0$ then the quadratic equation has two real roots.

Compute the value of $b^{2}-4ac$ as follows:

$b^{2}-4ac=(-10)^{2}-(4\times 8\times15)\\\\$

$=100-480\\=-380\\$

The equation has two complex roots.

Thus, the correct option is (A).

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3 years ago