2.2+x+(-3.4);x=-2.5

Mathematics

2 answers:

puteri [66]3 years ago

5 0

2.2 - 2.5 - 3.4
-3.7
.................

Natali [406]3 years ago

3 0

The answer is -3.7. Plug in -2.5 into the expression. Then the expression is rewritten as 2.2 - 2.5 - 3.4. Subtract -2.5 from 2.2 and you get -.3. Now, the expression is -.3 - 3.4. Subtract those from each other and you get -3.7.

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What is the equation of a line that is perpendicular to (-6,3) and (3,5)

Snezhnost [94]

The equation of the line that is perpendicular to the line passes

through (-6 , 3) and (3 , 5) and passes through point (2 , 7) is

y = $-\frac{9}{2}$ x + 16

Step-by-step explanation:

Let us explain how to find the equation of a line perpendicular to a line passes through two points

Find the slope of the line which passes through the two given point
Find the slope of the perpendicular line by reciprocal the slope of the line which passes through the given points and change its sign because the product of the slopes of the perpendicular lines is -1
Then write the equation of the line in the form y = m x + b, where m is the slope of the line and b is the y-intercept, to find the y-intercept you must have a point lies on the line

The missing information is the line passes through point (2 , 7)

The formula of the slope of a line is $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ , where $(x_{1},y_{1})$ and $(x_{2},y_{2})$ are two points on the line