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
Nat2105 [25]
2 years ago
9

50 PTS+ BRAINLIEST FOR CORRECT ANSWER

Mathematics
2 answers:
Flura [38]2 years ago
8 0

Answer:

jane is 28 and karen is 7

Step-by-step explanation:

j=4k

j-k=21

set the values of j equal to each other

4k=21+k

solve for k, you get 7

four times 7 is 28

Fudgin [204]2 years ago
7 0

Answer:

J = 28 and K = 7

Step-by-step explanation:

J = Jane

K = Karen

J = 4 * K

J - K = 21

4K - K = 21

3K = 21

K = 7

J = 4K

J = 4(7)

J = 28

Hope this helps :)

You might be interested in
Which points are solutions to the system of inequalities shown below?
Oksana_A [137]

Answer:

it would be a

Step-by-step explanation:

8 0
3 years ago
How many times does 6 go into 31
Nonamiya [84]
5 times because 6*5=30
5 0
3 years ago
The area of a circle is 28.26 square meters. What is the circle's diameter?
ikadub [295]

Answer: area for circle is  πr² so πr² =28.26 and we can sub 3.14 as pi

3.14*r²=28.26 we can divide by 3.14 to get r² on it's own

r²=28.26/3.14

then we root both sides to get r on it's own

28.26/3.14=9 √9=3

and the diameter is double the radius 3*2=6 so the diameter is 6

Step-by-step explanation:

7 0
3 years ago
Evaluate 4y when y = 5
Darina [25.2K]

Step-by-step explanation:

4y

4 (5)

4×5

20

y=20

Hope its helpfulllll

3 0
3 years ago
What is wrong with the following proof? Clearly we know that 1 does not equal 2. What rule of algebra did we break that makes th
Gnoma [55]

An attempt to divide by zero gives a contradictory result

A rule of algebra broken is <u>dividing by zero</u> (leading to a contradiction) and stating a finite result

Reason:

The given calculation is presented as follows;

1. a > 0, b > 0 given

2. a = b given

3. a·b = b²

4. a·b - a² = b² - a²

5. a·(b - a) = (b + a)·(b - a)

6. a = b + a

7. 0 = b

8. b = 2·b

9. 1 = 2

From line 4, the result are;

4. a·b - a² = b² - a² = 0

5. a·(b - a) = (b + a)·(b - a) = 0

On line 6, both sides where divided by (b - a) = 0, which should given an infinite result

Therefore, one rule of algebra broken is dividing by zero to get a finite result

In line 7, we have;

7. 0 = b

From 6. a = b + a, and a = b, we have;

8. b = 2·b

Therefore, line 9 should be;

9. 0 = 2·0; 0 = 0, given that we have;

1 × 0 = 0

2 × 0 = 0

∴ 1 × 0 = 2 × 0

However

  • 1 ≠ 2

In line 9., by dividing by b = 0, again, we have;

  • 9. 1 = 2 (a contradiction)

Therefore, one rule of algebra that is broken is <u>dividing by zero</u> and having a finite result

Learn more about the rules of algebra here:

brainly.com/question/11388301

5 0
3 years ago
Other questions:
  • <img src="https://tex.z-dn.net/?f=6.25%20%5Ctimes%201.4" id="TexFormula1" title="6.25 \times 1.4" alt="6.25 \times 1.4" align="a
    14·1 answer
  • Are the following figures similar?
    11·1 answer
  • I really need some help I don't understand ;-;
    5·1 answer
  • How do I factor-<br> EX 4x^2+7x - 15 = 0
    10·1 answer
  • -9p-17=10 pls help I do Connexus
    11·1 answer
  • What is equivalent to 1\5
    12·2 answers
  • Opens up or down, Vertex: (5,2), Passes through: (6,3)
    13·1 answer
  • For basketball tryouts, Kiana ran two laps in a total of 28.5 seconds. In the second lap, she beat her first lap by 3 seconds. W
    11·1 answer
  • Sam bought a pack of
    11·1 answer
  • Please help me answer! <br> Name the angle pair and find the missing angle measure
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!