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
TiliK225 [7]
3 years ago
11

I do not understand this at all, can someone please help me with the steps in each question

Mathematics
1 answer:
Mandarinka [93]3 years ago
6 0

Answer:

285 min

275 min

chi

tie

Step-by-step explanation:

swim - 1.5 km

bicycle ride - 40 km

run - 10 km

1) Alexandra

swim time = distance / velocity = 1.5 / 5 = 0.3 hr = 18 min

transition 1 time = 4 min

cycling time = distance / velocity = 40 / 15 = 2.6666667 hr = 160 min

transition 2 time = 3 min

run time = distance / velocity = 10 / 6 = 1.6666667 hr = 100 min

so total time to complete the triathlon is

= 18 + 4 +160 + 3 +100

= 285 min = 4.75 hrs

2) Chi

swim time = distance / velocity = 1.5 / 6 = 0.25 hr = 15 min

transition 1 time = 5 min

cycling time = distance / velocity = 40 / 15 = 2.6666667 hr = 160 min

transition 2 time = 5 min

run time = distance / velocity = 10 / 7.5 = 1.3333333 hr = 80 min

got flat tire that took 10 min to fix

so total time to complete the triathlon is

= 15 + 5 + 160 + 5 + 80 + 10

= 275 min

3) Alexandra won the race by 10 min

4)even though chi got flat tire , chi still won the race by 10 min,

if it took 20min to fix flat tire both their times would be 285 min and it would have been a tie.

You might be interested in
How many times can 71 go into 8??
sashaice [31]
8 can go into 71 seven times 
6 0
3 years ago
Read 2 more answers
1 m = 3.28 ft<br><br> About how many meters are in 41 feet?
saveliy_v [14]

Answer:

12.4968

Step-by-step explanation:

plz mark me brainlest and hope this helps

6 0
3 years ago
Answer please show steps please
erik [133]

Answer:

25 girls

Step-by-step explanation:

Let

x denote number of boys

and

y denote number of girls

According to the statement that total 45 people came,

x+y = 45      => Eqn 1

And total paid amount was 175

So,

5x + 3y = 175    => Eqn 2

For solving, We will use the substitution method

So, from eqn 1

x = 45-y

Putting value of x in eqn 2

5(45-y) +3y = 175

225 - 5y + 3y = 175

-2y+225 = 175

-2y = 175-225

-2y = -50

2y = 50

y = 25

Putting y =25 in eqn 1

x+25 = 45

x = 45 - 25

x = 20

As y= 25

So, 25 girls came to the dance ..

6 0
2 years ago
Drisen has 6 groups of trains. Each group has 3 trains in it. What addition number sentence would help him solve how many trains
Nimfa-mama [501]

Answer:

6x3=x

x=18

Step-by-step explanation: plzz mark brainliest

4 0
3 years ago
Simplify
OlgaM077 [116]

Answer:

see below

Step-by-step explanation:

\frac{x-1}{x^2-3x+2}+ \frac{x-2}{x^2-5x+6} +\frac{x-5}{x^2-8x+15}

we need to simplify that

x^2-3x+2=(x-1)(x-2)\\\\x^2-5x+6=(x-2)(x-3)\\\\x^2-8x+15=(x-3)(x-5)

so we can continue

\frac{x-1}{(x-1)(x-2)}=\frac{1}{x-2}\\\\\frac{x-2}{(x-2)(x-3)} =\frac{1}{x-3}\\\\\frac{x-5}{(x-3)(x-5)} =\frac{1}{x-3}

and we can put all together

\frac{1}{x-2}+ \frac{1}{x-3}+ \frac{1}{x-3}\\\\\frac{1}{x-2} +\frac{2}{x-3}\\\\\frac{x-3}{(x-3)(x-2)}+ \frac{2(x-2)}{(x-2)(x-3)} \\\\\frac{x-3+2x-4}{(x-3)(x-2)}\\\\\frac{3x-7}{x^2-5x+6}

3 0
3 years ago
Other questions:
  • A certain store sells small, medium and large toy trucks in each of the colors red blue green and yellow. the store has an equal
    5·2 answers
  • Reyna's health insurance plan requires that she have a physician who manages all of her health care. Reyna, most likely, has wha
    5·2 answers
  • (MUST GIVE WORKING)
    14·1 answer
  • Solve the equation for t
    8·1 answer
  • - 2X +3Y=7<br> 5x+8y=-2<br> Solution=(_,_)
    9·1 answer
  • Wrote (6x1/1000) in standard form
    6·1 answer
  • Is it possible to find a value of $x$ so that the value of the surface area (in square inches) is equal to the value of the volu
    5·1 answer
  • Help please and answer
    12·2 answers
  • Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal plac
    14·1 answer
  • La trayectoria de un cohete hacia el espacio
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!