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
antoniya [11.8K]
2 years ago
9

Which expression is equivalent to 21d + 18

Mathematics
2 answers:
sladkih [1.3K]2 years ago
5 0

Answer:

it’s c

Step-by-step explanation:

i’m smart

ra1l [238]2 years ago
4 0
C! Is the correct answer
You might be interested in
ZEFG and ZGFH are a linear pair, mZEFG = 3n+ 21, and mZGFH = 2n + 34. What are mZEFG and mZGFH?
marysya [2.9K]

Answer:

The answer is below

Step-by-step explanation:

∠EFG and ∠GFH are a linear pair, m∠EFG = 3n+ 21, and m∠GFH = 2n + 34. What are m∠EFG and m∠GFH?

Solution:

Two angles are said to form a linear pair if they share a base. Linear pair angles are adjacent angles formed along a line as a result of the intersection of two lines. Linear pairs are always supplementary (that is they add up to 180°).

m∠EFG = 3n + 21, m∠GFH = 2n + 34. Both angles form linear pairs, hence:

m∠EFG + m∠GFH = 180°

3n + 21 + (2n + 34) = 180

3n + 2n + 21 + 34 = 180

5n + 55 = 180

5n = 125

n = 25

Therefore, m∠EFG = 3(25) + 21 = 96°, m∠GFH = 2(25) + 34 = 84°

7 0
3 years ago
Alexandra buys sweatshirts for $12 each. In her store, she sells each sweatshirt for $30.
serious [3.7K]
Multiply $30 by .25 you get, it's $7.50so you subtract $7.50 from $30 and you get $22.50. Then multiply 2 (sweaters) by $22.50 and you get $45,but wait you still have to multiply that sales tax so you multiply .04 by $45 and you get $1.80, later you subtract $1.80 from $45 and you get $43.20(the cost of the two sweaters) I did part1 only cuz' no I have no time left Sorry for the inconvenience
7 0
3 years ago
Read 2 more answers
Write a two-step equation that involves multiplication and subtraction, includes a negative coefficient, and had a solution of x
Contact [7]
9x - 21 = -42
This should be the type of equation that you're looking 4
7 0
3 years ago
Idk how to do it i need the answer plsss
Irina18 [472]
It rose 29 degrees in that time frame
8 0
3 years ago
Read 2 more answers
Name three other real-world situations where a strategy, "plan of attack, or
Dmitry_Shevchenko [17]

Answer:

1.

Planning a wedding .

2.  

A huddle in and practice before a football game.

3.

The passing of a Constitutional Amendment.

8 0
3 years ago
Other questions:
  • a car delership is haveing a sale in which customer oay 85% of the reatil price fir a new vehicle . keith is buyibg a vechile wi
    8·1 answer
  • If XYZ is an isosceles triangle with base , what is the measure of X?
    6·1 answer
  • Please help I need the answer ASAP!!
    9·2 answers
  • Find x if f(x) = 2x + 7 and f(x) = -1.
    9·2 answers
  • 1. Rename 4/7 as a percent. Round to the nearest tenth of a percent if necessary
    15·2 answers
  • F(x)=log2(x-3) find the domain of x
    8·1 answer
  • Identify the translations of the graph of the parent function f(x) = x^2? that result in the graph of g(x) = (x + 2)2 + 6.
    5·1 answer
  • Y = 4x + 3 y = -x - 2 solving system by graphing​
    5·1 answer
  • Use graph to answer question
    13·1 answer
  • Find the value of x, given that the two triangles are similar.​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!