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
saveliy_v [14]
2 years ago
14

The points (-4, 1) and (r. -7) lie on a line with slope - 1. Find the missing coordinate r.

Mathematics
2 answers:
grigory [225]2 years ago
8 0

Answer:

r = 4

Step-by-step explanation:

You need to use the slope formula to solve for r.

1. Write out the equation using slope formula

(-7 - 1)/(r + 4) = -1

2. Multiply both sides by r + 4

-8 = -r - 4

3. Add 4 on both sides. Optionally, use the reflexive property of equality.

-r = -4

4. Multiply both sides by -1

r = 4

horrorfan [7]2 years ago
7 0

Answer:

  r = 4

Step-by-step explanation:

Using the point-slope form of the equation for a line, the line with slope -1 through point (-4, 1) is ...

  y -1 = -1(x +4)

Substituting the second point, we have an equation for r:

  -7 -1 = -1(r +4)

  8 = r +4 . . . . . . . divide by -1

  r = 4 . . . . . . . . subtract 4

The missing coordinate is 4. The second point is (4, -7).

You might be interested in
Need answers for 14-17
SOVA2 [1]
14. 43=5+2n
15.(178-n)*18=678
16.26n-38n=24
17.2n+44=132
3 0
3 years ago
A rectangular garden has length and width as given by the expressions below. Length: 4 - 7 (3x + 4y) Width: 3x(-2y) Write a simp
Nezavi [6.7K]

Answer:

⇒ 8 −  ⇒ 42x −  ⇒ 56y −  ⇒ 12xy

Step-by-step explanation:

Im smart

3 0
2 years ago
Read 2 more answers
A random sample of cats at the SPCA shows that 25 out of the 40 cats are kittens. There are a total of 800 cats at all the anima
Alinara [238K]

Answer: The number of kittens= 500.

Step-by-step explanation:

Given, A random sample of cats at the SPCA shows that 25 out of the 40 cats are kittens.

i.e. ratio of kitten to cats =\dfrac{25}{40}=\dfrac{5}{8}

We assume that , the ratio will remains same.

Let x be the number of kitten out of 800 , then we have

\dfrac{x}{800}=\dfrac{5}{8}\\\\\Rightarrow\ x=\dfrac{800\times5}{8}=500

Hence, the number of kittens out of 800 cats= 500.

7 0
3 years ago
What did I do wrong on the number of votes one of them is wrong or a couple are wrong pleaasseeee tell me!!!!
DiKsa [7]
I don't see any wrong
4 0
3 years ago
ASAP!: can anyone solve three times the difference of Federico age and 4 increased by 7 is greater than 37 what are possible val
Alexandra [31]

Answer:

Federcio's age possible values are those that are greater than 14 i.e 15, 16, 17 and so on

Step-by-step explanation:

Let Federico's age = x

Three times the difference of Federico’s age, and 4 means:

3(x - 4)

Increased by 7:

3(x - 4) + 7

Is greater than 37:

3(x - 4) + 7 > 37

Solving the inequality:

3x - 12 + 7 > 37

3x - 5 > 37

3x > 37 + 5

3x > 42

x >42/3

x > 14

Federcio's age possible values are those that are greater than 14

7 0
3 years ago
Other questions:
  • Please help I don’t understand:(
    11·2 answers
  • Which is a factor of each term of the polynomial?
    12·1 answer
  • 0.91 meters in customary
    7·1 answer
  • Can someone plz help me on this
    10·1 answer
  • The statement, "If it is not a quadrilateral, then it is not a rectangle," is represented by which of the diagrams below?
    8·1 answer
  • 5w-8/3 =4w+2<br> Please solve with steps
    15·1 answer
  • Help is needed, thank you so much!
    11·2 answers
  • Which is the graph of f(x)=1/2x? Edg
    15·1 answer
  • Whats x^2=1? I dunno it
    7·2 answers
  • What is the sum of 2/3,1/2and1/4=
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!