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3 years ago

Please I need this ASAP

Mathematics

1 answer:

dimaraw [331]3 years ago

7 0

Answer:

Step-by-step explanation:

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What is the slope of a line that is perpendicular to the line whose equation is ax+by=c?

Oksi-84 [34.3K]

The perpendicular line will have a slope of b/a.

To find this, we first have to solve our equation for slope intercept form.

ax + by = c ----> subtract ax

by = -ax + c ----> divide by b

y = -a/bx + c/b.

So we know the slope of this equation to be -a/b. Since perpendicular lines have opposite and reciprocal slopes, we know we can simply flip the fraction and make it a negative to get the new slope of b/a.

6 0

3 years ago

Consider the linear system of equations y=2/5x-1 and 2x-3y+1=0 graph the system of equations

nlexa [21]

We can see that the lines intersect at: (-5,-3)

Step-by-step explanation:

Given system of equations is:

$y = \frac{2}{5}x-1\ \ \ \ Eqn1\\2x-3y+1 = 0\ \ \ \ Eqn2$

Lets convert the second equation in the same form as the first equation

$2x-3y+1 = 0$

Adding 3y on both sides

$2x-3y+1+3y = 0+3y\\2x+1 = 3y\\3y= 2x+1$

Dividing both sides by 3

$\frac{3y}{3} = \frac{2x+1}{3}\\y = \frac{2}{3}x+\frac{1}{3}\\$

The graph of equation can be plotted using manual graphing or any online graphing calculator

We will use the Desmos online graphing calculator to graph the equations (Picture attached)

We can see that the lines intersect at: (-5,-3)

Keywords: Graphing, linear equations

Learn more about linear equations at:

#LearnwithBrainly

8 0

3 years ago

The coldest recorded temperature at the South Pole is about −83∘C.

Inessa [10]

Answer: 71

Step-by-step explanation:

Warmest - coldest

= -12 - (-83)

= -12 + 83

= 71

8 0

4 years ago

Which number is less than 22,874?

Ronch [10]

I have attached the steps so good luck

4 0

3 years ago

Christian randomly selects students from his grade to rate a math test as easy, moderate, or difficult. Of the students he surve

IRINA_888 [86]

Answer:

Step-by-step explanation:

Total students he surveyed: 27

Amount that found it something OTHER than easy: 14 (11 moderate + 3 difficult)

This means that $\frac{14}{27}$ found it something other than easy

Multiply that by 162 to find the proportion for the larger population:

162 * (14/27), and we get 84.

4 0

2 years ago