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
german
2 years ago
11

21x =7? A. x=3 B. None of these C. x=147 D. x=28

Mathematics
1 answer:
Varvara68 [4.7K]2 years ago
6 0

Answer: B

Step-by-step explanation:

To isolate x, you divide both sides by 21

21x=7

\frac{21x}{21}=\frac{7}{21}

x = 7/21

Simplify by dividing both the numerator and denominator by 7

x = 1/3

Since, 1/3 is not an option, B is the correct answer

You might be interested in
1. Trey bought a puzzle priced at $12 and a
Mazyrski [523]

Answer:

$28.08

Step-by-step explanation:

104%×12+104%×15

=$28.08

Hope this helps!!!

7 0
3 years ago
Read 2 more answers
A scientist is studying wildlife in Ohio and she estimates that the population of bats is tripling every year. If she had counte
Sloan [31]

The number of bats that there would be in 2021 would be 768,000.

<h3>What would be the number of bats in 2021?</h3>

The formula that can be used to determine the future value of bats in 2021 is:

FV = P (1 + r)^n

Where:

  • FV = Future value
  • P = Present value = 3000
  • R = interest rate = 300%
  • N = number of years = 4

3000(1 + 3)^4

3000 x 4^4 = 768,000

To learn more about future value, please check: brainly.com/question/18760477

8 0
2 years ago
7. Find DE.<br> 11-25<br> E<br> А<br> 4x + 1<br> D<br> С
Arlecino [84]

Answer:

  • DE = 37

Step-by-step explanation:

AD = DC and BE=EC ⇒

DE = 1/2AB

  • 4x + 1 = 1/2(11x - 25)
  • 2(4x + 1) = 11x - 25
  • 8x + 2 = 11x - 25
  • 11x - 8x = 2 + 25
  • 3x = 27
  • x = 27/3
  • x = 9

DE = 4*9 + 1 = 36 + 1 = 37

3 0
2 years ago
Read 2 more answers
Plz Help!!!! I really need some help! Plz!
ddd [48]
Need part b

Have a nice day
3 0
3 years ago
Read 2 more answers
Simplify
Alexandra [31]

Answer:

b

Step-by-step explanation:

u just have to think about it

5 0
3 years ago
Other questions:
  • In the first game of the year, the modified basketball team made 63.5% of their foul shot free throws. Matthew made all 6 of his
    5·1 answer
  • Scientist A dissolved 1.0 kilogram of salt in 3.0 liters of water. Scientist B dissolved 20 pounds of salt in 7.0 pints of water
    10·2 answers
  • 3^2x3^5x3^7 In index form
    14·1 answer
  • I NEED HELP PLZ ASAP!!!!! In right triangle ABCD above, x = A. 6 B. 8 C. 6√2 D. 10 E. 13
    6·1 answer
  • 1. Find six rational numbers between
    5·1 answer
  • Solve this system of equations using the substitution method. If the system of equations
    7·1 answer
  • In the figure, the measure of Angle 8 = 96 and the measure of Angle 12 =42. Find the measure of Angle 9.
    15·1 answer
  • What does 5+3x/2 equal?​
    9·2 answers
  • Helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
    14·2 answers
  • A building is acquired on January 1,at a cost of 930,000 with estimated useful life of 8 years and salvage value of 73,700
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!