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
ohaa [14]
3 years ago
14

A museum has a 1/2 ounce piece of a precious metal. When the museum first received the piece, it had a value of $90. Its value h

as since decreased by 20%. What is the current value per whole ounce of the piece of metal?
Question options:

$72.00


$144.00


$36.00


$180.00
Mathematics
1 answer:
Drupady [299]3 years ago
3 0
A.72.00

20% of 90 is 18 so 90 - 18 = 72 or A
You might be interested in
4(х +Зу) = 2(3х-y)<br> Solve for x
Fittoniya [83]

Answer:

7y

Step-by-step explanation:

use distributive property:

4x+12y=6x-2y

2x=14y

x=7y

6 0
3 years ago
Which represents the solution to the absolute value equation? 3|2x+4|-1=11
larisa86 [58]
The first step for absolute value equations is to isolate the expression contained within the absolute value bars:

3|2x+4|-1 = 11
3|2x+4| = 12
|2x+4| = 4

so |2x+4| is 4 units away from 0 on a number line, but we don't know in which direction -- negative or positive? you'll have two answers.

2x+4 = 4

AND

2x+4 = -4

solve both of those two step equations and you'll get

x = 0

AND

x = -4

so 0 and -4 are your solutions.
5 0
3 years ago
If 2= (1+ r)^7 solve the equation for r?​
solong [7]

7 = r^1/2 is the same as saying 7 = square root of r. So, to get rid of the square root sign on the r, you need to square it, and when you do something to one side of the equation, you have to do the same to the other side. So after squaring both sides, you get 49 = r.

8 0
4 years ago
The surface area of two similar solids are 340yd^2 and 1,158yd^2. The volume of the larger solid is 1,712yd^2. What is the volum
solong [7]
The ratio of the areas is 340/1158 = 170/579thus the ratio of the side lengths is sqrt(170)/sqrt(579)  = .5418the ratio of volumes is the side length ratio cubed = .5418^3 = .159Volume of smaller solid  = (.159)(1712) = 272.37
7 0
3 years ago
What is 50/80 in simplest form? Thanks for your awesome help people
Sliva [168]
The answer is 5/8 because they both are divisable by 10
7 0
3 years ago
Other questions:
  • Can someone please explain this problem step by step? Thank you sooooooooooooo much!
    10·1 answer
  • Suppose you have a $15 coupon that can be used on any purchase over $100 at your favorite clothing store. The discounted price o
    7·2 answers
  • I need help pronto {(2,2,),(-5,2),(6,6),(9,4),(4,9)} is it a function and explain please
    7·1 answer
  • Riley has a piece of yarn that is 6 1 2 ft long. She wants to cut the yarn into sections that are each 1 4 ft long. How many sec
    5·2 answers
  • the area of a square is a perfect square between 100 and 250 square centimeters. which could be the area of the square? select a
    5·1 answer
  • What is the inverse of the function below?<br> f(x) = 3^x
    15·1 answer
  • an article after allowing a discount of 20% on its marked price was sold at a gain of 20% had it been sold after allowing 25% di
    13·1 answer
  • PLS HELP. ITS FOR AN ASSIGNMENT DUE SOON!!! IF YOU DONT KNOW THE ANSWER PLEASE DONT SAY ANYTHING.
    14·1 answer
  • Which of the following equations has a slope of -3 and a y-intercept of 8? *
    8·1 answer
  • The symbol for a radioactive nuclide is superscript 131 subscript 56 upper b a.. which statement is correct? the atomic number o
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!