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
Leokris [45]
2 years ago
10

The number 77 is decreased to 16. What is the percentage by which the number was

Mathematics
1 answer:
Troyanec [42]2 years ago
3 0

Answer:

79.2% (to the nearest tenth)

Step-by-step explanation:

use the percent change formula:

PC = [ (difference between initial value and final value) ÷ initial value] x 100

= [(77-16) ÷77] x 100

= 79.22077922...

= 79.2% (to the nearest tenth)

You might be interested in
Jason has 60 cars. 30% is blue. How many are blue?
Dmitriy789 [7]
So to figure out 10% of this would be to remove the 0. that would be six. since 30÷10 is 3, we have to do 6×3. that would be 18, so 30% of 60 is 18
5 0
3 years ago
Read 2 more answers
I’m not sure how to write this equation. Please check the picture to see the graph for yourself! Help will be much appreciated!
Makovka662 [10]

let's notice something, the parabola is a vertical one, so the squared variable is the x, and is opening downwards, meaning the x² will have a negative coefficient.

the distance from the vertex to the directrix/focus is the amount of "p" units, let's see in the graph, the distance from the vertex to the directrix is 2, and since the parabola is opening downwards, "p" is a negative 2, p = -2.  The vertex is of course at (0, 2).


\bf \textit{parabola vertex form with focus point distance}
\\\\
4p(y- k)=(x- h)^2
\qquad
\begin{array}{llll}
vertex\ ( h, k)\\\\  p=\textit{distance from vertex to }\\
\qquad \textit{ focus or directrix}
\end{array}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\begin{cases}
h=0\\
k=2\\
p=-2
\end{cases}\implies 4(-2)(y-2)=(x-0)^2\implies -8(y-2)=x^2
\\\\\\
y-2=\cfrac{x^2}{-8}\implies \blacktriangleright y=-\cfrac{1}{8}x^2+2 \blacktriangleleft

8 0
3 years ago
<img src="https://tex.z-dn.net/?f=32%20%5Cfrac%7B1%7D%7B2%7D%20%20%20%20%5Ctimes%20%20%5Csqrt%5B8%5D%7B16%7D%20%20%5Cdiv%20%280.
Oxana [17]
Answer:
8485.281374

Just use the calculator
6 0
3 years ago
How do you write 1.306 as a percentage?
AlexFokin [52]

Answer:

130.6 % just move the decimal place 2 places to the right and add the percentage sign

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Write quadratic function below in standard form<br> Y= -2(x+4)^2+4
Vinil7 [7]

Step-by-step explanation:

Y = -2(x+4)² + 4

= -2[x² + 8x +16] +4

= -2x² -16x -32 +4

= -2x² -16x -28

3 0
3 years ago
Other questions:
  • when the smallerof two consecutive integers is added to two times the larger,the result is 17.find the integers
    13·1 answer
  • A force of 10 lb is required to hold a spring stretched 4 in. beyond its natural length. How much work is done in stretching it
    13·1 answer
  • Based on the spreadsheet below, which of the following is a true statement?
    10·2 answers
  • Solve 2 log x = log 36
    10·2 answers
  • Which equation involves a prime quadratic and cannot be solved by factoring? A. x2 + 5x − 4 = 0 B. x2 − x − 6 = 0 C. x2 + 3x − 4
    12·1 answer
  • Many bank accounts never go below zero. But some banks will allow a negative balance, at least for a short time, called an overd
    13·1 answer
  • Solve for s.<br><br> –9s − 4 = –8s
    9·1 answer
  • 1. r-8/5=-4/11<br> 2. 9a/a+4= 3/5
    12·1 answer
  • Find the area of the sector. Use 3.14 for the value of 1. Round your answer to the
    9·1 answer
  • Find the least common denominator for these<br> two rational expressions.<br> 8/n<br> n/7n²
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!