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
vesna_86 [32]
3 years ago
8

AYUDA CON ESTO!!! ALGUIEN PORFAVOR

Mathematics
1 answer:
Gre4nikov [31]3 years ago
8 0

Answer:

Problem 1)  frequency:  160 heartbeats per minute, period= 0.00625 minutes (or 0.375 seconds)

Problem 2) Runner B has the smallest period

Problem 3) The sound propagates faster via a solid than via air, then the sound of the train will arrive faster via the rails.

Step-by-step explanation:

The frequency of the football player is 160 heartbeats per minute.

The period is (using the equation you showed above):

Period = \frac{1}{frequency} = \frac{1}{160} \,minutes= 0.00625\,\,minutes = 0.375\,\,seconds

second problem:

Runner A does 200 loops in 60 minutes so his frequency is:

\frac{200}{60} = \frac{10}{3} \approx  3.33   loops per minute

then the period is: 0.3 minutes (does one loop in 0.3 minutes)

the other runner does 200 loops in 65 minutes, so his frequency is:

\frac{200}{65} = \frac{40}{13} \approx  3.08   loops per minute

then the period is:

\frac{13}{40} =0.325\,\,\,minutes

Therefore runner B has the smaller period

You might be interested in
Please help it’s due tonight. Your help will be greatly appreciated.There is also a graph. WILL PUT YOU AS BRAINLY!!!!!!
chubhunter [2.5K]

Answer: see below

Step-by-step explanation:

The shape is a trapezoid

Base 1 (BH) is 10

Base 2 (QA) is 14

Height is 5

Area

A=\frac{base_{1} +base_{2} }{2} h

A=\frac{10+14}{2} *5\\A=12*5\\A=60

Find distance between QB and HA

D=\sqrt{(x_{2} -x_{1}) ^{2}+(y_{2}-y_{1})  ^{2}

Q( -4,4)  B (-2,9)

D=\sqrt{(-2--4)^{2}+(9-4)^{2}  } \\D=\sqrt{2^{2} +5^{2} } \\D=\sqrt{29}

Perimeter

P=10+14+2\sqrt{29} \\P=24 +2\sqrt{29} \\P= 24+10.77\\P=34.77

5 0
3 years ago
How would you begin to plot the ordered pair ( 6,2)?
Simora [160]

Step-by-step explanation:

start with x which is 6

then plot it

then do y which is 2

and plot

3 0
3 years ago
Read 2 more answers
6. Let A and B be nxn matrices . Compute (A + B) (A + B). Explain all steps.
Pie

Answer:

(A+B)(A+B)=A.A+B.A+A.B+B.B

Step-by-step explanation:

Given that matrices A and B are nxn matrices

We need to find (A+B)(A+B)

For understanding the multiplication of matrices let'take A is mxn and B is pxq matrices,we can multiple only when n=p,so our Ab matrices will be mxq.

We know that that in matrices AB is not equal to BA.

Now find  

(A+B)(A+B)=A.A+B.A+A.B+B.B

So from we can say that (A+B)(A+B) is not equal to A.A+2B.A+B.B because AB is not equal to BA in matrices.

So (A+B)(A+B)=A.A+B.A+A.B+B.B

4 0
3 years ago
A number between 10 and 20 is both a foctor of 60 and<br>a multiple of 6.<br>What is the number?​
Kisachek [45]

Answer:

12

Step-by-step explanation:

List out factors of 60 =

1 x 60 = 60

2 x 30 = 60

3 x 20 = 60

4 x 15 = 60

5 x 12 = 60

6 x 10 = 60

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60 are factors of 60.

List out multiples of 6 from 10 to 20.

12 and 18.

Since 12 is seen on one of the factors of 60 and a multiple of 6 between 10 and 20, the answer is 12.

6 0
3 years ago
8. The expression (x+5)(x+8)+(x+5)(2x - 3) can be written as the product of (x + 5) and
ale4655 [162]

Answer:

(x + 5)(3x + 5)

Step-by-step explanation:

(x - 5)(x + 8) + (x + 5)(2x - 3) ← factor out (x + 5) from each term

= (x + 5)(x + 8 + 2x - 3)

= (x + 5)(3x + 5)

8 0
2 years ago
Other questions:
  • Find the area of a trapezoid, given bases 10.2cm and 12.2cm and side 12.6cm
    8·1 answer
  • If the zeroes of the polynomial x^3-14x^2+37x-60 are alpha,beta,gamma,then find
    10·1 answer
  • A cube has a side length of 5 cm. If this cube is enlarged by a scale factor of 2,
    6·1 answer
  • the Johnson's pay $9.95 a month plus $.035 per min for local phone service. last month, they paid $12.75. How many minutes of lo
    7·1 answer
  • Which property of equality would be used to isolate the variable a in this equation?. a – 4 = 12. A. addition property of equali
    12·2 answers
  • What is the value of x , when x = 16 and y = 2?
    13·2 answers
  • Please help me ASAP I’ll Mark Brainly
    9·2 answers
  • It costs twelve dollars to get in to the fair. Tickets for rides cost extra and are d dollars each,
    7·1 answer
  • help on latest question? it's worth 100 pts and pretty easy im just lazy :) its also a math question :)
    12·2 answers
  • 2/3(-7)+2/3(-5) solve using the distributive property
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!