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
AlladinOne [14]
3 years ago
9

Yan is running on a track that is of a km long. She can run 4 laps in 12

Mathematics
1 answer:
sashaice [31]3 years ago
7 0

Answer:

3 km per minute

Step-by-step explanation:

12/4=3 laps

3 km per minute

You might be interested in
A store is having a sale on trail mix and jelly beans. For 5 pounds of trail mix and 6 pounds of jelly beans the total cost is $
inna [77]

The cost for each pound of trail mix and each pound of jelly is given below.

Step-by-step explanation:

Let t = cost/pound of trail mix

Let j = cost/pound of jelly beans

5t + 6j = 35

3t + 2j = 15  =  > 2j = 15 - 3t

5t + 3(15 - 3t) = 35

5t + 45 - 9t = 35

- 4t + 45 = 35

- 4t  =  - 10

4t = 10

t = 2.5

3(2.5) + 2j = 15

7.5 + 2j = 15

2j = 7.5

j = 3.75

7 0
3 years ago
PLS SOMEONE HELP ME ASAP
babymother [125]

Answer:

A. (2i)(8) = d. 16i

B. 16i³ = b. -16i

C. (2i)⁴ = a. 16

D. (2i)(8i) = c. -16

Step-by-step explanation:

A. Multiply 2i by 8 to get 16i, which corresponds to d.

B. The exponent is 3 more than a mulitple of 4 in 16i³, so the answer is negative. -16i corresponds to b.

C. (2i)⁴ has an exponent that is a multiple of 4, so the i isn't needed. 16 corresponds to a.

D. (2i)(8i) simplifies to 2(8) * i². The exponent is 2 more than a multiple of 4, so the answer is negative, without an i. -16 corresponds to c.

8 0
3 years ago
This isn't something specific I need to know for school, I'm just curious. I know the most commonly used variables are x, y, and
andre [41]

Answer:

Any letter you want

Step-by-step explanation:

The letters used for variables don't matter. What matters is what the variables represent: their numerical value. Variables are just to help identify what needs solving. Other common variables are a, b, and c which are found frequently in trigonometry. To answer your question, there are no "next letters." You can use any letter you'd like as a variable because it holds the same numerical value. Basically, the whole alphabet is at your disposal.

4 0
3 years ago
If 12 1/2% of a sum of money is $40, what is the total sum of money?
GarryVolchara [31]

Answer:

i think its 320

Step-by-step explanation:

i looked it up

8 0
3 years ago
Read 2 more answers
Solve by elimination. 1. 2x-3y=-9. 4x+9y=-13. 2. 2x-y=7 4x+5y=7. 3. 2x+4y=14 4x+y=14. 4. 4x-3y=16 5x+17y=20
JulijaS [17]
1.) x = -4, and y = 1/3

2.) x = 3, and y = -1

3.) x = 3, and y = 2

4.) x = 4, and y = 0

Hope this helps! - Alyssa
3 0
3 years ago
Other questions:
  • Each statement describes a transformation of the graph of y = x. Which statement correctly describes the graph of y = x − 13?
    13·1 answer
  • MATH HW..... good answers only!!!
    15·2 answers
  • In the regular nonagon shown, what is the measure of angle x?
    6·2 answers
  • If 3ab = c, then solve for a
    12·1 answer
  • Can someone help me pls
    5·1 answer
  • What is a fixed percent of the principal?
    8·1 answer
  • Can anyone please help me.
    5·2 answers
  • 20 plus -14 explain how you know
    7·2 answers
  • Helpppp <br> What is the slope of this line?<br> 7x - y = - 4
    7·1 answer
  • 5. Laney is 4 feet 8 inches tall. There are 2.54
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!