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Drupady [299]
3 years ago
11

Can you help me with questions 1 not 2

Mathematics
1 answer:
sammy [17]3 years ago
7 0
Fro every 4 mystery books checked out, 3 Nonfiction books are checked out.
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Write an equation for the perpendicular line to the line whose equation is 4y-5x=20 that contains the point (-2,-3)
yuradex [85]

Answer:

4x + 5y = - 23

Step-by-step explanation:

the equation of a line in slope-intercept form is

y = mx + c ( m is the slope and c the y-intercept )

rearrange 4y - 5x = 20 into this form

add 5x to both sides

4y = 5x + 20 ( divide all terms by 4 )

y = \frac{5}{4} x + 5 ← in slope-intercept form

with slope m = \frac{5}{4}

given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m}, hence

m_{perpendicular} = - 1 / \frac{5}{4} = - \frac{4}{5}

y = - \frac{4}{5} x + c ← is the partial equation

to find c substitute (- 2, - 3) into the partial equation

- 3 = \frac{8}{5} + c ⇒ c = - \frac{23}{5}

y = - \frac{4}{5} x - \frac{23}{5} ← in slope-intercept form

multiply all terms by 5

5y = - 4x - 23 ( add 4x to both sides )

4x + 5y = - 23 ← in standard form




7 0
3 years ago
I need help :)<br> Find the GCF: 10x^5−16x^4+4x^2
andreev551 [17]
The greatest common factor is 2x^2.
the largest number that divides evenly into <span>10x^5−16x^4+4x^2  is two.
the highest degree is x^2 so the answer would be 2x^2
</span>
5 0
3 years ago
Which statement is true about the lines?
hammer [34]

Answer:

C. the lines are perpendicular

6 0
3 years ago
To which set or sets does -20 belong?
il63 [147K]

Answer:

B: integer and rational number

Step-by-step explanation:

whole numbers: 0, 1, 2, 3, 4, ...

integer: ..., -4, 3, -2, 1, 0, 1, 2, 3, 4, ...

rational number: any number that can be written as a fraction of integers

Answer: B: integer and rational number

8 0
3 years ago
Read 2 more answers
Use the equation for variance below, along with the given data set, to answer the following questions.
juin [17]

nx -33=9x-4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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