1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aliina [53]
3 years ago
5

1. If two nonvertical lines are parallel, what do we know about their slopes? If two lines are perpendicular and neither is para

llel to an axis, what do we know about their slopes? Why must the lines be nonvertical?
Mathematics
1 answer:
yanalaym [24]3 years ago
6 0

Answer:

Two straight lines with slopes m and m' are parallel when m = m'

Two straight lines with slopes m and m' are perpendicular when m × m' = - 1.

Step-by-step explanation:

Let us assume that the two non-vertical lines in the slope-intercept form are

y = mx + c ........... (1) and  

y = m'x + c' ............ (2)

If those two lines are parallel then we can say the slope of them will be the same i.e. m = m'

Now, if given two straight lines (1) and (2) are perpendicular to each other and neither of them is parallel to the axes, then we can write m × m' = - 1. (Answer)

You might be interested in
I need help with this there is part a and b
Alex17521 [72]

Answer:

the answer should be 3.914 or 4

Step-by-step explanation:

hope it helps!

I am guessing that Part A: 3.914

and                          Part B: 4

6 0
3 years ago
Y=_x+4<br> x + 2y =<br> 8<br> How many solutions dose this linear system have
jeyben [28]

Answer:

X=-1, y=4

Step-by-step explanation:

y = x + 4 \\ x + 2y = 8 \\  =  =  =  =  =  =  =  =  =  =  =  = \\ y - x = 4 \\ x + 2y = 8

by using eliminating property

3y = 12 \\ y = \frac{12}{3}    = 4

by substitution

X=-1

6 0
2 years ago
4 years ago a pint of milk
fenix001 [56]

Given-

Cost of milk 4 years ago = £1.05

To find-

Percentage increase in cost

Solution-

Increase in cost = £ ( 1.26 - 1.05 )

→ £ 0.21

Percentage increase :-

\frac{0.21}{1.05} \times 100

→ 20

Therefore, Percentage increase of the cost of milk over 4 years is <u>2</u><u>0</u><u>%</u> .

✍️ <em>By </em><em>Benjemin</em> ☺️

5 0
3 years ago
Pls help I’ll brainlest ASAP
Ulleksa [173]

Answer:

Step-by-step explanation:

n/3 - 2 = 14

n/3 = 16

n = 48

7 0
3 years ago
Electrical energy (E) is measured in kilowatt hours (kwh) using the formula E = P · t, where P is the power in kilowatts and t i
anygoal [31]

Answer:

6 kw    are used each hour

Step-by-step explanation:

E = P t

E/t = P

66 kwh /11h = 6 kw

8 0
2 years ago
Other questions:
  • If y = x^2 and dx/dt = 3, what is dy/dt when x = -1
    8·1 answer
  • What is another way to describe 45 is it 45 tens 0 ones 9 tens 5 ones or 4 tens 5 ones
    14·2 answers
  • Use the clues to find the mystery number. The mystery number is –
    12·2 answers
  • 3.5 m
    5·1 answer
  • Find a quotient and remainder for 52/8
    9·2 answers
  • Which of the following expressions is equal to tan245°?
    5·1 answer
  • Write an expression that can be used to multiply 6 x 198 mentally? please answer thanks!
    14·2 answers
  • Consider a game in which you flip a coin. If it comes up heads, you earn 1 point; if it comes up tails, you earn 0 points. What
    8·1 answer
  • Which of the following should be avoided when proving a trigonometric identity?
    7·1 answer
  • what is the maximum, minimum, quartile 1, median, quartile 3, range, interquartlie range of these numbers " 46,48,50,52, and 54"
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!