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
klemol [59]
3 years ago
6

PLA HELP ME ASAP FOR 12 and 13 (SHOW WORK!!!!!) + LOTS OF POINts!

Mathematics
1 answer:
jekas [21]3 years ago
4 0
For 12. Neil's mistake was that he didn't combine like terms of both the constant and numbers with both the variable of k. 9 and -8 are both constants so you combine it and get an answer of 1 since 9+ -8 is 1. 12k and k both have the variable of k so you combine it and get 13k. 

The simplified version should be: 13k+1=12k-1

For 13. The third expression would be equivalent to the expression above listed as 12r+6s. The third expression is 4(3r+s)+2s and if you do PEMDAS you will get the same answer. Parentheses, 4 times 3r is 12r and 4 times s is 4s and after that you get 12r+4s+2s. As said before, if they have like terms you combine it so you get 12r+6s and it will equal the same as the one shown above.

Hope this helped you and would love brainiest!  <span />
You might be interested in
The diameter of the base of the cone measures 8 units.
weeeeeb [17]

Answer:   32\pi cubic units.

Step-by-step explanation:

You can use this formula for calculate the volume of a cone:

V_{cone}=\frac{1}{3}\pi r^2h

Where "r" is the radius and "h" is the height.

You know that the diameter of the base of the cone measures 8 units, then, the radius can be found by dividing the diameter by 2:

r=\frac{8units}{2}\\\\r=4units

Since you already know that height and  the radius, you can substitute them into the formula. Then, the volume of this cone is:

V_{cone}=\frac{1}{3}\pi (4units)^2(6units)

V_{cone}=32\pi \ units^3

3 0
3 years ago
Read 2 more answers
Somebody please help me :)​
aleksandrvk [35]

Answer:

(5,7.5) (12,18) (18,27)

Step-by-step explanation:

It costs $1.50 per cupcake.

y = 1.5x, where x is the amount of cupcakes and y is the amount of money in dollars.

7.5 = 1.5 times 5

18 = 1.5 times 12

27 = 1.5 times 18

6 0
3 years ago
Help me please smart people help!!!!!!
Mama L [17]
He had 9.43 pounds of gummy bears
8 0
3 years ago
Read 2 more answers
What is the perimeter for 3f+3f+8+8+2f-1
Montano1993 [528]

Answer:

<em>To find the Perimeter</em><em> </em><em>just </em><em>add </em><em>all </em><em>the </em><em>numbers</em>

<em>=</em><em>3f+3f+8+8+2f-1</em>

<em>=</em><em>8f+</em><em>1</em><em>5</em>

5 0
3 years ago
Read 2 more answers
What is 4÷7 please help me
aleksandrvk [35]

Answer:

4÷7 is  0.571428571428571

= 0.57

Step-by-step explanation:

Hope this helps!!!

6 0
3 years ago
Other questions:
  • I am having trouble with this question and it is really giving me a headache ​
    12·2 answers
  • Please Help!!! I have 5 minutes left!!!!! The volume of a​ cone-shaped hole is 16 pi ft cubed . If the hole is 3 ft​ deep, what
    7·2 answers
  • Helpppppppppppppppppppppppp
    5·1 answer
  • As we study random variables, the idea of z-scores will come up again. What is a z-score (in words) and what is the formula for
    13·1 answer
  • What is 20+30×0+1 can you give me a answer
    12·2 answers
  • Am i correct about this or no? Need answer asap.
    13·1 answer
  • 25 x 45% - 10 = 25%<br>​
    7·2 answers
  • Milo has 2 hours of free time. He spends 2/4 of an hour with his dog he spends 3/4 of an drawing. What fraction of an hour dose
    8·1 answer
  • Solve the following equation for X:<br> 2x - 8 = -2
    13·1 answer
  • If /_\CAT ~= /_\LUV then /_\c ~=/_\L. True or False?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!