PLEASE HELPPPP !!!!!!!

3.50 over(divided by) X equals 19.25 what is X?

castortr0y [4]

Answer:

x=0.18 repeating

Step-by-step explanation:

Solve the rational equation by combining expressions and isolating the variable x

4 0

2 years ago

(-5,7) and (2,5) find the slope of the line passing through the given points

svp [43]

Answer: -2/7

Step-by-step explanation:

To find the slope, you use the formula $m=\frac{y_2-y_1}{x_2-x_1}$ .

$m=\frac{5-7}{2-(-5)} =\frac{-2}{7}=-\frac{2}{7}$

Now, we know the slope is -2/7.

6 0

3 years ago

Among two supplementary angles the measure of the larger angle is 400 more than the

pogonyaev

9514 1404 393

Answer:

70° and 110°

Step-by-step explanation:

The sum of angles is 180°; their difference is 40°. So, the larger is ...

(180° +40°)/2 = 110°

The smaller is 180° -110° = 70°

The two angles are 70° and 110°.

_____

Above, we have "cut to the chase." If you let the larger be 'a' and 's' and 'd' represent the sum and difference, you have ...

a + (a-d) = s . . . . the sum of the larger and smaller angles

2a = s+d . . . . . . add d

a = (s+d)/2 . . . . the relation we used.

4 0

3 years ago

Solve this problem out

Virty [35]

Option C

When $(2x - 3)^2$ is subtracted from $5x^2$ then the result is $x^2 + 12x - 9$

<h3>Solution:</h3>

Given that $(2x - 3)^2$ is subtracted from $5x^2$

We have to find the result

Subtraction is a mathematical operation that tells us the difference between two numbers.

When "a" is subtracted from "b", we write in mathematical expression as "b - a"

So $(2x - 3)^2$ is subtracted from $5x^2$ is written mathematically as:

$\rightarrow 5x^2 - (2x - 3)^2$

Expanding the above expression using algebraic identity:

$(a-b)^2 = a^2 - 2ab + b^2$

$\rightarrow 5x^2 - ((2x)^2 -2(2x)(3) + (3)^2)\\\\\rightarrow 5x^2 - (4x^2 - 12x + 9)$

Multiplying the nnegative sign with terms inside bracket

There are two simple rules to remember:

When you multiply a negative number by a positive number then the product is always negative.

When you multiply two negative numbers or two positive numbers then the product is always positive.

$\rightarrow 5x^2 - (4x^2 - 12x + 9)\\\\\rightarrow 5x^2 - 4x^2 + 12x -9\\\\\rightarrow x^2 + 12x - 9$

Hence the result is: $x^2 + 12x - 9$

3 0

3 years ago

What is the length of segment BD

lisabon 2012 [21]

Answer: The length of BD is 2.4

Step-by-step explanation: BD is a leg of a right triangle, so use the

Pythagorean Theorem a² + b² = c²

BC is the hypotenuse here, so that is c = 3

We can use the segment CD as side b = 1.8

We will call BD side a, and solve to find that length.

a² + (1.8)² = 3² Square the known values of b and c

a² + 3.24 = 9 Subtract 3.24 from both sides.

a² = 9 - 3.24 Simplify

a² = 5.76 Find the square root of both sides (Calculator time!)

a = 2.4

5 0

3 years ago