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
Sladkaya [172]
3 years ago
6

Maurice's new CD has 12 songs. Each song lasts between 3 and 4 minutes. He estimates that the whole CD is about 30 minutes long.

Which statement about Maurice's estimate is true?
Mathematics
1 answer:
nlexa [21]3 years ago
6 0

Answer:

The estimate is less than the actual length of the CD.

Step-by-step explanation:

Consider the provided information.

Maurice's new CD has 12 songs. Each song lasts between 3 and 4 minutes.

That means the minimum length of the CD should be: 12×3=36 minutes.

The maximum length of the CD should be: 12×4=48 minutes

He estimates that the whole CD is about 30 minutes long.

30 minutes is less than 36 minutes.

That means, the estimate is less than the actual length of the CD.

Hence, the correct statement is: The estimate is less than the actual length of the CD.

You might be interested in
URGENT PLEASE: You purchase a new guitar and take out a loan for $450. You have 18 equal monthly payments of $28 each. What is t
kramer
Answer:
8%

Step-by-step explanation:
The amount repaid is ...
A = P(1 +rt)
Filling in the given values, we can find r.
(18·28) = 450(1 +r(18/12)) . . . . . t is in years
504 = 450 + 675t

54/675 = 0.08 = 8%

The simple interest rate on the loan is 8%.
8 0
2 years ago
Determine the number of bytes in 513 BM
Naddik [55]
We know, 
    1 MB = 1000 KB
513 MB = (1,000 * 513) KB
             = 513,000 KB

Now,
          1 KB = 1,000 bytes
513,000 KB = (1,000 * 513,000) bytes
                   = 513,000,000 bytes 

∴ 513 MB is 513,000,000 bytes
3 0
3 years ago
Solve for x <br><br> can someone please help me
Fed [463]

Answer:

10

Step-by-step explanation:

The answer is because:

a^2 + b^2 = c^2

8^2 + 6^2 = x^2

64 + 36 = x^2

100 = x^2

√100 = √x^2

10 = x

4 0
3 years ago
The number of defective units in a production run of 850 circuit boards are normally distributed with 21 defective units and 3 d
Katen [24]

Answer:

82%

Step-by-step explanation:

We let the random variable X denote the number of defective units in the production run. Therefore, X is normally distributed with a mean of 21 defective units and a standard deviation of 3 defective units.

We are required to find the probability, P(17 < X < 25), that the number of defective units in the production run is between 17 and 25.

This can be carried out easily in stat-crunch;

In stat crunch, click Stat then Calculators and select Normal

In the pop-up window that appears click Between

Input the value of the mean as 21 and that of the standard deviation as 3

Then input the values 17 and 25

click compute

Stat-Crunch returns a probability of approximately 82%

Find the attachment below.

5 0
3 years ago
Three forces act on an object. Two of the forces are at an angle of 95◦ to each other and have magnitudes 35 N and 7 N. The thir
Cerrena [4.2K]

We want to find \vec F_4 such that the object needs is in equilibrium:

\vec F_1+\vec F_2+\vec F_3+\vec F_4=\vec0

We're told that F_1=35\,\mathrm N, F_2=7\,\mathrm N, and F_3=9\,\mathrm N. We also know the angle between \vec F_1 and \vec F_2 is 95º, which means

\vec F_1\cdot\vec F_2=F_1F_2\cos95^\circ=245\cos95^\circ

\vec F_3 is perpendicular to both \vec F_1 and \vec F_2, so \vec F_1\cdot\vec F_3=\vec F_2\cdot\vec F_3=0.

If we take the dot product of \vec F_1 with the sum of all four vectors, we get

\vec F_1\cdot(\vec F_1+\vec F_2+\vec F_3+\vec F_4)=0

\vec F_1\cdot\vec F_1+\vec F_1\cdot\vec F_2+\vec F_1\cdot\vec F_3+\vec F_1\cdot\vec F_4=0

{F_1}^2+\vec F_1\cdot\vec F_2+0+\vec F_1\cdot\vec F_4=0

\implies\vec F_1\cdot\vec F_4=-\left({F_1}^2+\vec F_1\cdot\vec F_2\right)

We can do the same thing with \vec F_2 and \vec F_3:

\vec F_2\cdot(\vec F_1+\vec F_2+\vec F_3+\vec F_4)=0

\implies\vec F_2\cdot\vec F_4=-\left(\vec F_1\cdot\vec F_2+{F_2}^2\right)

\vec F_3\cdot(\vec F_1+\vec F_2+\vec F_3+\vec F_4)=0

\implies\vec F_3\cdot\vec F_4=-{F_3}^2

Finally, if we do this with \vec F_4, we get

\vec F_4\cdot(\vec F_1+\vec F_2+\vec F_3+\vec F_4)=0

\implies{F_4}^2=-\left(\vec F_1\cdot\vec F_4+\vec F_2\cdot\vec F_4+\vec F_3\cdot\vec F_4\right)

\implies{F_4}^2=-\left(-\left({F_1}^2+\vec F_1\cdot\vec F_2\right)-\left(\vec F_1\cdot\vec F_2+{F_2}^2\right)-{F_3}^2\right)

\implies F_4=\sqrt{{F_1}^2+{F_2}^2+{F_3}^2+2(\vec F_1\cdot\vec F_2)}

\implies\boxed{F_4\approx36.2\,\mathrm N}

7 0
3 years ago
Other questions:
  • How many cubic feet of water can the following in ground swimming pool hold
    9·1 answer
  • What's 35 minutes in a fraction
    8·2 answers
  • 1. Numa escola de 670 alunos, 352 estudam Inglês, 125 fazem apenas o curso de Espanhol e 85 estudam as duas línguas. Com base ne
    10·1 answer
  • Please help! This is due at 11:59pm (the problem is stated in the photo)
    10·2 answers
  • Un carpintero quiere cortar una plancha de triple y de 1m de largo y 60 cm de ancho, en cuadrados lo más grandes posibles. El ca
    5·1 answer
  • WILL GIVE BRAINLIEST!!! DONT GUESS!!! EASY MATH PROBLEM FOR SMART PEOPLE!!!!
    13·1 answer
  • Consider the table of input and output values shown. Drag a number to each box to complete the table of values to represent a
    13·1 answer
  • Pls help<br> Spam answers will be reported<br> Give a good explanation
    6·2 answers
  • What is the decimal multiplier to increase by 73%
    15·2 answers
  • Find the slope of the line.<br><br> PLS HELP I AM SO BEHIND
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!