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
sdas [7]
3 years ago
13

Yesterday noah ran 2 1/2 miles in 3/5 hour. Emily ran 3 3/4 miles in 5/6 hour. Anna ran 3 1/2 miles in 3/4 hour how fast in mile

s per hour did each person run? Who ran the fastest? !!SHOW WORK!!
Mathematics
2 answers:
Dmitry_Shevchenko [17]3 years ago
6 0

Answer:

Step-by-step explanation:

To calculate the speed of each one we proceed as follows:

speed=distance/time

a] Noah's speed:

distance=2.5 miles

time=3/5 hours

speed=(2 1/2)/(3/5)

=(5/2)/(3/5)

=5/2×5/3

=25/6

=4 1/6 mi/hr

Emily's speed

distance=3 3/4 miles

time=5/6 hour

thus

speed=(3 3/4)/(5/6)

=15/4)/(5/6)

=15/4×6/5

=4 1/2 mi/hr

Anna's speed:

distance=3 1/3 miles

time=3/5

speed=(3 1/3)/(3/5

=(10/3)/(3/5)

=10/3×5/3

=5 5/9 mi/hr

Anna was the fastest

erma4kov [3.2K]3 years ago
4 0

Answer:

Publicado por primera vez el 13 de octubre de 2006; revisión sustantiva Lun 17 de julio de 2017

Un ciudadano es un miembro de una comunidad política que disfruta de los derechos y asume los deberes de membresía. Esta amplia definición se percibe, con pequeñas variaciones, en las obras de autores contemporáneos, así como en la entrada "citoyen" de la Encyclopédie [1753] de Diderot y d'Alembert [1]. A pesar de este punto de partida común y de algunas referencias compartidas, [2] las diferencias entre las discusiones del siglo XVIII y los debates contemporáneos son significativas.

explanation:

espero que ayude.

You might be interested in
How are improper fractions and mixed numbers different from proper fractions?
madreJ [45]
Improper fractions and mixed numbers are always greater than or equal to 1, while proper fractions are less than 1 and greater than 0. Improper fractions have a numerator that's bigger than it's denominator, while proper fractions have a numerator that's smaller than it's denominator.
4 0
3 years ago
What is the tangent ratio of KJL? (Question and answers provided in picture.)
Simora [160]

Answer:

Option (1)

Step-by-step explanation:

The given triangle JKL is an equilateral triangle.

Therefore, all three sides of this triangle will be equal in measure.

Side JK = JL = KL = 48 units

Perpendicular LM drawn to the base JK bisects the base in two equal parts JM and MK.

By applying tangent rule in ΔJML,

tan(∠KJL) = \frac{\text{Opposite side}}{\text{Adjacent side}}

                = \frac{\text{LM}}{\text{JM}}

                = \frac{\text{LM}}{24}

Since, Sin(K) = \frac{\text{Opposite side}}{\text{Hypotenuse}}

Sin(60)° = \frac{\text{LM}}{48}

\frac{\sqrt{3}}{2}=\frac{\text{LM}}{48}

LM = 24√3

Now, tan(∠KJL) = \frac{\text{LM}}{24}

                          = \frac{24\sqrt{3} }{24}

Therefore, Option (1) will be the answer.

7 0
3 years ago
HELP asap AB=85m Find the length of Line CD
Aleks [24]
CD = x
BC = y
AB = 85
BD = BC+CD = y+x

tan(angle) = opposite/adjacent
tan(28) = BC/AB
tan(28) = y/85
85*tan(28) = y
y = 85*tan(28)
y = 45.1953016912257

tan(angle) = opposite/adjacent
tan(31) = BD/AB
tan(31) = (y+x)/85
tan(31) = (45.1953016912257+x)/85
85*tan(31) = 45.1953016912257+x
51.0731526173427 = 45.1953016912257+x
51.0731526173427-45.1953016912257 = 45.1953016912257+x-45.1953016912257
5.877850926117 = x
x = 5.877850926117

So CD is roughly 5.877850926117 meters

8 0
3 years ago
Please answer for extra points !
MatroZZZ [7]

Answer:

the answer is D

Step-by-step explanation:

I don't know how to explain it very well but the line starts at 2 then ends at 8

6 0
2 years ago
The United States has a total area of 3,796,742 square miles.
Dvinal [7]

Answer:

4 * 10^6

Step-by-step explanation:

3,796,742 is about 4,000,000

4 * 10^? = 4,000,000

4 to 4,000,000 is an extra 6 zeroes

? = 6

4 * 10^6

4 0
3 years ago
Other questions:
  • Help me i need help with this
    14·1 answer
  • an airport parking lot charges a basic fee of $2 plus $1 per half-hour parked. what is the total charge from parking in the lot
    14·1 answer
  • ...........................................................................................
    5·1 answer
  • Juan decided to join a gym to get in shape for football. He has two payment options. Option a is to buy a membership card and pa
    8·1 answer
  • Could you help with this please? It would get my grade up and i'd get my stuff back.
    12·2 answers
  • Read this excerpt from Dean Caymans on becoming an inventor I had just finished making a complicated piece of equipment that was
    15·1 answer
  • PLEASE HELP ME ASAP I'M BEING TIMED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·2 answers
  • Josh is tiling his swimming pool. What information does Josh need?
    9·1 answer
  • It is winter if and only if it is the month of<br> December
    7·1 answer
  • The mean SAT score in mathematics is 554. The standard deviation of these scores is 39. A special preparation course claims that
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!