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
AnnyKZ [126]
3 years ago
12

Percent decrease from 20 to 11

Mathematics
1 answer:
nevsk [136]3 years ago
4 0

Answer:

45 percent

Step-by-step explanation:

20-11=9

9 divided by 20= 0.45

0.45 x 100= 45%

You might be interested in
Hey can you please help me!
melisa1 [442]

Answer:


Step-by-step explanation:

1) Tangent makes 90 degrees with the radius. Hence

a) Angle ABD = 90-angle BDC = 90-61.3 = 28.7

b) Triangle BCD is isosceles since tangents have equal length.

Hence angle BCD = 180-(61.3+61.3) = 57.4

c) Angle BDC = 57.4 (since triangle BCD is isosceles)

d) Angle BAC and Angle BCD are supplementary. Hence angle BAC = 122,6

-------------------------------------------

2) Arc length of minor arc BC = \frac{79.3}{360} (24) = 5.287

b) ARc length of minor arc = circumference -minor arc

= 18.713

---------------------------------------------

3) circumference = pi d = 3.14(9) = 28.26


6 0
3 years ago
Thirty coins,all dimes and nickels,are worth $2.60. How many nickels are there?
quester [9]

Answer: 12 nickels

Step-by-step explanation:

4 0
3 years ago
The length of a rectangle is 3 inches more than the width. The area is 10 square inches. Find the dimensions
mr_godi [17]

Answer:

Width = 2

Length = 5

Step-by-step explanation:

let A be the area of the rectangle

   L be the length of the rectangle

   w be the width of the rectangle

<u><em>Formula</em></u>: ‘<u><em>area of a rectangle</em></u>’

A = L × w

…………………………………………………

A = L × w

⇔ 10 = (w + 3) × w

⇔ 10 = w² + 3w

⇔ w² + 3w - 10 = 0  

<u><em>Solving the quadratic equation</em></u> w² + 3w - 10 =  0 :

Δ = 3² - 4(1)(-10) = 9 - (-40) = 9 + 40 = 49

then √Δ = 7

\Longrightarrow w=\frac{-b+\sqrt{\Delta } }{2a} =\frac{-3+7}{2} =2

  or\ w=\frac{-b-\sqrt{\Delta } }{2a} =\frac{-3-7}{2} =-5

-5 is not valid ,because w represents the width

which must be a positive number

Then  w = 2

<u><em>Conclusion</em></u>:

Width = 2

Length = 2 + 3 = 5

6 0
2 years ago
The grocery store charges $6.85 for 5 bags of potatoes.if someone bought 7 bags of potatoes, how much would it cost them
Hoochie [10]

Answer:

$9.59 for 7 bags of potatoes

Step-by-step explanation:

First you find the unit rate by dividing 6.85 by 5.

The unit rate should equal $1.37.

Then you multiply that and 7 which equals $9.59

4 0
3 years ago
College bookstore charge $60 for a yearly membership. Books will then only cost $7.60 each, tax included. Right in equation to r
Yuri [45]
Equation - 7.60b+60=m


7.60b+60=100
You’d be able to buy 5 books
4 0
3 years ago
Other questions:
  • Which is a correct interpretation of the slope of the line in this graph?
    6·1 answer
  • It’s identifying and writing expressions <br> Please help.!
    5·1 answer
  • Write the equation 2y − 4x = 5 in the form y = mx +
    15·2 answers
  • Please help if you can ty!!
    13·1 answer
  • Jenna's parents have given her an running shoes. interest-free loan of $100 to buy a new pair of She plans to pay back the loan
    8·1 answer
  • Log6 1/36<br><br> natural log or base 10 log?
    5·1 answer
  • F(x) = x2. What is g(x)?​
    7·1 answer
  • 468 divided by 3 step by step solution
    5·1 answer
  • If there are 680 calories in 8 oz of ground beef, how many
    10·2 answers
  • What is the difference of the fractions? Use the number line to help find the answer.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!