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
galben [10]
2 years ago
12

The percent of pure gold in 14-karat gold is about 58.3%. A 14-karat gold ring weighs 5.6 grams. About how many grams of pure go

ld are in the ring?​
Mathematics
1 answer:
lubasha [3.4K]2 years ago
3 0

Answer:

1.044 ounces

Step-by-step explanation:

Given : One ounce of 14 karat gold  = 0.58 ounce of pure gold.

i.e. Weight of pure gold in 1 ounce of 14 karat gold = 0.58 ounce of pure gold.

Then, Weight of pure gold in 1.8 ounces of 14 karat gold  = 1.8 x (Weight of pure gold in 1 ounce of 14 karat gold)

Weight of pure gold in 1.8 ounces of 14 karat gold = 1.8 x ( 0.58) ounces of pure gold.

It implies 1.8 ounces of 14 karat gold  = 1.8 x ( 0.58) ounces of pure gold.

= 1.044 ounces of pure gold.

Therefore, If a 14 karat gold necklace weighs 1.8 ounces that means it contains 1.044 ounces of pure gold.

You might be interested in
What equals -36 when added but equals 160 when multiplied.
Irina18 [472]
X + y = -36

x * y = 160

x = -36 - y

(-36-y) * y = 160

-36y - y^2 = 160

y^2 + 36y + 160 = 0

y = -5.19  and x = -30.8

or

y = -30.8 and x = -5.19

You can write them in this form too

x+ysqrt(z)


7 0
3 years ago
Rotations Please help me.
Trava [24]

Answer:

  see attached

Step-by-step explanation:

You can do these yourself fairly easily. Copy the figure and the coordinate axes onto a piece of tracing paper (tissue paper or even facial tissue will work, too), then rotate the copied figure 90° clockwise.

Line up the origin of the axes and make sure the axes you drew line up with the ones on the original figure. For 90° clockwise rotation, what was the +y axis will now align with the +x axis. Copy the rotated figure from the tracing paper back to the graph on your problem page in its new location. (You can cut out the figure, if necessary. Just be sure to make note of the position relative to the axes.)

This sort of physical activity reinforces the thinking you need to do to mentally rotate the figures. It is worth the effort.

7 0
3 years ago
Kelly earns 15% more than her sister, and together they earn $999.75. How much does Kelly earn per week?
valina [46]

Answer:

534. 75

Step-by-step explanation:

let the income of kellys sister be x

kellys income=x+15% of x

=23x over 20

x+23x/20=999. 75

or, x=465

kellys income=23×465/20

=534. 75

5 0
3 years ago
I need help with an algebra assignment right away!
Georgia [21]

So remember that slope-intercept form is y = mx+b (m = slope, b = y-intercept) and standard form is ax+by = c. (a and b are coefficients and c is the constant)

Starting with the first question: 9x + 2y = 6

Firstly, subtract 9x on both sides: 2y = -9x + 6

Next, divide both sides by 2, and your equation will be y = -4.5x + 3

Now with the next equation: y - 3 = 4(x + 1)

Firstly, foil 4(x + 1): y - 3 = 4x + 4

Next, subtract y on both sides: -3 = 4x - y + 4

Next, subtract 4 on both sides, and your answer will be: -7 = 4x - y

Next equation: y + 7 = -2(x - 3)

Firstly, foil -2(x - 3): y + 7 = -2x + 6

Next, subtract 7 on both sides of the equation, and your answer will be: y = -2x - 1

Next: y - 5 = 3(x - 2) (part a)

Firstly, foil 3(x - 2): y - 5 = 3x - 6

Next, add 5 on both sides, and your equation is: y = 3x - 1

Next, y - 5 = 3(x - 2) (part b)

Firstly, foil 3(x - 2): y - 5 = 3x - 6

Next, subtract y on both sides of the equations: -5 = 3x - y - 6

Next, add 6 on both sides of the equation, and your answer will be: 1 = 3x - y

4 0
3 years ago
A box contains 48 tickets for six door prizes. Six tickets are drawn, and not replaced, to declare the winners. If serge purchas
Lyrx [107]
The tickets aren't replaced, so multiply the probabilities, decreasing the  denominator each time.

a) 1/48
b) (1/48)(1/47)
c) (1/48)(1/47)(1/46)(1/45)(1/44)(1/43)
6 0
3 years ago
Read 2 more answers
Other questions:
  • 3y+12=2x in slope-intercept form?
    12·1 answer
  • Carpet costs $12 per square yard. How much will it cost to carpet a room that is 180 square feet? Please help me 
    11·1 answer
  • Give another name for plane n​
    6·1 answer
  • The perimeter of a pool table is about 7.8m. four times the length equals nine times the width. What are the dimensions of the t
    6·1 answer
  • Kim has read 35 pages a book. that is 20% of the total number of pages. how many pages long is kim's book?
    12·1 answer
  • Let x = 4. Evaluate the expression.<br><br> x−3
    5·2 answers
  • A high school student volunteers to
    5·2 answers
  • Select all the measurements that are equivalent to 48 centimeters.
    12·1 answer
  • A quadratic trinomial is a trinomial in the form x 2 + b x + c or a x 2 + b x + c with a degree of ___.
    9·1 answer
  • What is the median of the 19 numbersplotted in the line plot below?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!