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
Ira Lisetskai [31]
3 years ago
11

20. Use the Distributive Property to find another expression for 3(2x + 7)

Mathematics
1 answer:
ASHA 777 [7]3 years ago
7 0

Answer:

D

Step-by-step explanation:

3×2x=6x

3×7=21

So your answer is D

You might be interested in
Xion and Kyndol wanted to have a contest to see which of their paper airplanes could fly the longest distance. xion's plane flew
iVinArrow [24]
3.21 meters

There's 100 centimeters in a meter (centi means 100) so 79 centimeters equals 0.79 meters. So 4 - 0.79 is 3.21
6 0
3 years ago
Heated-treated parts are specified to have a hardness of at least 45 (lower specification limit). Any parts that are below 45 ar
Nataly_w [17]

Answer:

P(X

And we can find this probability using the normal standard table or excel and we got:

P(z

The figure shows the calculation for this case.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the hardness of a population, and for this case we know the distribution for X is given by:

X \sim N(48.5,2)  

Where \mu=48.5 and \sigma=2

We are interested on this probability

P(X

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X

And we can find this probability using the normal standard table or excel and we got:

P(z

The figure shows the calculation for this case.

5 0
3 years ago
N x n² da como resultado=
kykrilka [37]
N x n2 da como resultado
3 0
3 years ago
Read 2 more answers
The table shows the number of feathers Patsy the Peacock sold at each of the 8 festivals this year.
Vlada [557]

Answer:

75%

Step-by-step explanation:

It's right

6 0
3 years ago
Read 2 more answers
Between 10 a.M. And 11 a.M., 48 people came into Brad's store. 40 of them made a purchase. What is the experimental probability
irina [24]

Answer: The required probability is \dfrac{5}{6}

Step-by-step explanation:

Since we have given that

Number of people came into Brad's store = 48

Number of them made a purchase = 40

So, the experimental probability that the next person to come into the store will make a purchase would be

\dfrac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}\\\\=\dfrac{40}{48}\\\\=\dfrac{5}{6}

Hence, the required probability is \dfrac{5}{6}

4 0
3 years ago
Other questions:
  • An orchard has 30 rows of apple trees. There are 3 trees in each row. How many apple trees are in the orchard?
    5·2 answers
  • Equation of a line pass through origin in called
    9·1 answer
  • Z roms
    8·1 answer
  • Ken finished one-half of his homework
    9·1 answer
  • Write an equation in point slope form for the line that has a slope of 9/4 and contains the point (3, -4)
    10·1 answer
  • What is the inverse operation of division? How do you "undo" division?
    8·2 answers
  • Which inequality is not true if Y equals -5?
    7·1 answer
  • Solve the following problem: 20/3 = 2 (w+2/3)
    15·2 answers
  • Mr. Ramirez purchased 20 concert tickets for a total of $225. The concert tickets cost $15 for adults and $10 for children under
    13·1 answer
  • You are buying candles for an outdoor event. The candles you want come in boxes of 10, and you have enough money to purchase 20
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!