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
konstantin123 [22]
3 years ago
10

point k is between j and l. if jk = x^2 - 4x , kl = 3x - 2 and jl = 28 write and solve an equation to find the lengths of jk and

kl
Mathematics
1 answer:
inn [45]3 years ago
7 0

Answer:

JK=12

KI=16

Step-by-step explanation:

K\in\ [JI]\ \Rightarrow\ |JK|+| KI |=|KI|\\\\x^2-4x+3x-2=28\\\\\Longleftrightarrow\ x^2-x-30=0\\\\\\\Longleftrightarrow\ x^2+5x-6x-30=0\\\\\\\Longleftrightarrow\ x(x+5)-6(x+5)=0\\\\\\\Longleftrightarrow\ (x+5)(x-6)=0\\\\x=-5\ (excluded)\ or\x=6\\\\\\\Longleftrightarrow\ \\|JK|=x^2-4x=6^2-4*6=36-24=12\\|KI|=3x-2=3*6-2=18-2=16\\\\Proof: 12+16=28\\

You might be interested in
Hi please can you help me this is a new topic and I’m very confused
olchik [2.2K]

Answer: the large jar is cheaper

Step-by-step explanation:

If you divide the £1.54 by 440g and £1.26 by 340g, you'll find which one is cheaper per gram :

1.54/440 = 0.0035

1.26/340 = 0.0037

So, by comparing both prices/gram, you've found that the large jar is cheaper.

8 0
2 years ago
Describe the sequence of basic rigid motions that shoews S1 = S2
telo118 [61]

Answer:

S1 is congruent to S2

Step-by-step explanation:

4 0
3 years ago
In a test contains 10 questions, +3 marks are given for every correct answer and -1 mark are given for every incorrect answer. S
romanna [79]
I think it would be 21 points total for 7 correct awnsers I did the math hope it helps
5 0
3 years ago
Read 2 more answers
Line M passes through the points (5,1) and (8,6) while line n passes through the point (-4,3) and (-1,8) . Which statement accur
kirill [66]
M=(6-1)/(8-5)=5/3

y=5x/3+b, using (5,1)

1=25/3+b

b=-22/3

y=(5x-22)/3

...

m=(8-3)/(-1--4)=5/3...

y=5x/3+b, using (-1,8)

8=-5/3+b

b=29/3

y=(5x+29)/3

Since they have the same slope and difference y-intercepts they are parallel lines and will never intersect.
4 0
3 years ago
Read 2 more answers
#8 PLEASEEEENENDBBXNFJDNNFNBCBCC
Natasha2012 [34]

Answer:

a) 45° b) 90°

Step-by-step explanation:

squares have 90 degree angles and half of that is 45

7 0
3 years ago
Other questions:
  • Find the value of each expression. Show your work. <br> 1) 9p3 <br> 2) 10c4
    11·1 answer
  • (Apex 2.2.4 math 8)
    15·2 answers
  • The old city park is rectangular. It has a length of 350 meters. It has a width of 125 meters. What is the perimeter, in meters,
    9·1 answer
  • he table gives the probability distribution of the number of books sold in a day at a bookstore. What is the probability of 16 o
    14·1 answer
  • Use a calculator to find a decimal approximation for the following trigonometric function.
    14·1 answer
  • Find the distance between 2 and -2.<br>A) -6<br>B) -4<br>C) 0<br>D) 4​
    9·2 answers
  • I WILL GIVE BRAINLIST, DUE IN 15 MIN
    9·1 answer
  • Can someone help me on this ?
    8·1 answer
  • The length of a rectangle is 7 inches and the width is (x + 2) inches. Write an expression in simplest form that represents the
    5·1 answer
  • Xander spends most of his time with his 10 closest friends. he has known 4 of his 10 friends since kindergarten. if he is going
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!