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
kkurt [141]
3 years ago
15

Factor 21a–27.

Mathematics
2 answers:
Ganezh [65]3 years ago
8 0

Answer:

3(7a - 9)

Step-by-step explanation:

21a–27

3*7*a - 3*9

Factor out 3

3(7a - 9)

vlada-n [284]3 years ago
4 0

Answer:

3(7a-9)

Step-by-step explanation:

The greatest common factor between 21a and 27 is 3. Hope this helps!

You might be interested in
a particular plant root grows 2.5 inches per month how many centimeters is the plant root growing per month
Lady bird [3.3K]
2.5 inches is 6.35 centimeters because 1 inch is 2.54 cm

3 0
3 years ago
Read 2 more answers
1. Michelle purchased 25 audio files in January. In February she
san4es73 [151]

<u>Answer:</u>

Michelle purchased 25 audio files in January. The percent increase is 60%

<u>Solution: </u>

Given Data:

Michelle purchases = 25 audio files in January

Again purchased = 40 audio files in February

We need to find the percent increase for the given data.

Step 1:

Use the formula for percent change ,

=\frac{\text { amount of change }}{\text { original amount. }}

Step 2:

First we find the amount of change from the question.

Amount of change = 40 – 25  

By subtracting, we get 15.

Step 3:

substitute the values in formula we get,

Formula percent change = \frac{15}{25} = 0.6  

Percent = 0.6 \times 100 = 60 %.

Result:

Michelle purchased 25 audio files in January. And In February she purchased 40 audio files. Hence the percent increase is 60%.

8 0
3 years ago
Evaluate -3(6) please help me with this question
Dovator [93]

Answer:

-18

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which function represents this sequence? The explicit formula for a geometric = 21(r)n-1 function is an 1 n 2 3 4 5 3 an 6 12 24
Anestetic [448]

Peachy Orchard Developers are preparing land to create a large subdivision of single-family homes.  They have already built 15 houses on the site.  Peachy Orchard plans to build six new homes every month.  Write a sequence for the number of houses built, then write an equation for the sequence.  Fully describe a graph of this sequence.  The sequence is 21, 27, 33, 39, ....  Note that sequences usually begin with the first term, where the number of months n =1.  

5 0
3 years ago
Type your answer in the box.<br>Evaluate y3 – 2y (y – 5) + 13 when y = -3​
kap26 [50]

Answer:

-62

Step-by-step explanation:

y³ – 2y (y – 5) + 13

when y = -3

y³ – 2y (y – 5) + 13

=(-3)³ – 2(-3) [ (-3) – 5] + 13  (by PEDMAS, evaluate parentheses first)

=(-27) + (6) (-8) + 13   (next do multiplication)

=(-27) + (-48) + 13

= -27 - 48 + 13

= -62

3 0
3 years ago
Other questions:
  • <img src="https://tex.z-dn.net/?f=%20%5Ctan%28%20%5Calpha%20%29%20%20%2B%20%202%5Ctan%282%20%5Calpha%20%29%20%2B%204%20%5Ctan%28
    10·1 answer
  • Maria found the least common multiple of 6 and 15. Her work is shown below. Multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 6
    10·2 answers
  • What is the value of the y-coordinate for point S? Question 1 options: 5 -4 4 -5
    14·1 answer
  • An object is moving at a speed of 32 yards per hour. Express this speed in feet per day.
    7·1 answer
  • Add the two mixed numbers 1 1/3 + 3 2/3 = ?
    13·1 answer
  • Find the midpoint of AB if A = (-3, 8) and B equals (-7 -6)
    14·2 answers
  • PLZ HELPPPPPPPP <br><br> When y=4x-6 find y if x=o
    5·1 answer
  • Metalloids are useful as semiconductors in modern electronics, like smartphones. Which feature of a smartphone is made possible
    9·1 answer
  • 5/6 divided by 10/11
    9·1 answer
  • Answer the following question
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!