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
____ [38]
3 years ago
11

Solve and check the following equation. 8d + 21 = 12d + 5 d =

Mathematics
1 answer:
olganol [36]3 years ago
3 0

Subtract 8d from both sides

21 = 12d + 5 - 8d

Simplify 12d + 5 - 8d to 4d + 5

21 = 4d + 5

Subtract 5 from both sides

21 - 5 = 4d

Simplify 21 - 5 to 16

16 = 4d

Divide both side by 4

16/4 = d

Simplify 16/4 to 4

4 = d

Switch sides

d = 4

<u>Check answer</u>

8d + 21 =12d + 5

Let d = 4

8 × 4 + 21 = 12 × 4 + 5

Simplify 8 × 4 to 32

32 + 21 = 12 × 4 + 5

Simplify 12 × 4 to 48

32 + 21 = 48 + 5

Simplify 32 + 21 to 53

53 = 48 + 5

Simplify 48 + 5 to 53

53 = 53

You might be interested in
100 divided by what is 30
scZoUnD [109]

Answer:

3.33333333333

Step-by-step explanation: it keeps going on and on.

5 0
3 years ago
What is -12.6 as a simplified percent?
fenix001 [56]
-12.6 as a percent is -1260%
3 0
4 years ago
A gift shop had 500 coloring pencils. The shop sold 3 sets of 20 coloring pencils, 6 sets of 12 coloring pencils, and 10 sets of
alexira [117]
500-(3*20)-(6*12)-(10*18)=188 pencils left
5 0
3 years ago
Read 2 more answers
What is the range of the relation?​
weqwewe [10]

Answer:

Step-by-step explanation:

The range refers to how high up and how low down the graph goes.  The lowest value to the highest is usually how you note the range.  The lowest y value is -4 and the highest is 4.  So the range is:

-4 ≤ y ≤ 4

3 0
3 years ago
PLEASE HELP DUE AT 11:59
mariarad [96]
The answer would be D
4 0
3 years ago
Other questions:
  • PLEASE HELP (15 POINTS) What is the slope of the graph shown below. A. -2 B. 2 C. -5 D. 5
    7·2 answers
  • Describe the relationship between the unfinished puzzle and the missing piece
    14·1 answer
  • PLEASE HELP 20 POINTS
    13·1 answer
  • Multiply. (−2/3)(5/4)
    14·1 answer
  • If you have 54 blue marbles and 99 yellow marbles, what is the greatest number of identical marble bags that can be made without
    6·2 answers
  • Answer ASAP<br> 10 points
    15·1 answer
  • Find the volume of the following<br> square pyramid.<br> 26 cm<br> 20 cm<br> 20 cm
    10·2 answers
  • With this transformation the image is never congruent to the original.
    15·2 answers
  • Constance had a doctor appointment 62 miles from her house. Because traffic is heavy in the mornings, she knew it would take her
    11·2 answers
  • B: identify the constant(s), variable(s), base, exponent, literal and numeral coefficient in each expression.complete the table
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!