Ask question

Ask question

All categories

2 years ago

11

Point K is the midpoint of JL. If JK=7x+4 and KL=12x−21, what is the length of JL?

1 answer:

telo118 [61]2 years ago

7 0

Since K is the midpoint of JL, it divides the segment JL into two equal halves.
That means ⇒ JK = KL
Substitute expressions for the parts ⇒ 7x + 4 = 12x - 21
Now solve the equation: 7x - 7x + 4 = 12x - 7x - 21
4 = 5x - 21
4 + 21 = 5x - 21 + 21
25 = 5x
5 = x
Substitute the value into one of the expressions: JK = 7(5) + 4 = 39
JL = JK + KL
JL = 39 + 39 = 78

You might be interested in

the chorus has 35 members. which expression represents the number of ways a group of 6 members can be chosen to do a special per

zimovet [89]

You have to choose $6$ members from the group of $35$ people. So there are $\binom{35}{6}$ ways to do it.

3 0

3 years ago

Read 2 more answers

Which of the following is the best approximation of the correlation coefficient for the data displayed in the scatterplot?

ra1l [238]

Answer:

0.5

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

On discovering that her family had a 70% risk of heart attack, Erin took a treadmill test to check her own potential of having a

frez [133]

Answer:

c

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

anzhelika [568]

Answer:

$\displaystyle ME=\frac{z\cdot s}{\sqrt{n}}$

Step-by-step explanation:

$z$ represents the critical value, $s$ represents the sample standard deviation, and $n$ represents the sample size.

7 0

2 years ago

YALL B) HELP ME NOOOOWWWWWWWW!

navik [9.2K]

Answer:

A) 0."36"

B)It is a repeating decimal because .36 is repeated indefinitely. Terminating decimals contains a finite number of digits after the decimal point.

Step-by-step explanation:

4 0

2 years ago