A pink gold bracelet weighs 60 g. It is made from 76% gold, 18% copper and 6% aluminium.
a What is the mass of the gold in the bracelet?
b What is the mass of the copper in the bracelet?

Answers

Answer 1

Answer:

m(Au)=45.6 [gr] ; m(Cu)= 10.8 [gr].

Step-by-step explanation:

the masses of gold (Au), copper (Cu) and aluminium (Al) are:

0.76*60=45.6 (gr); 0.18*60=10.8 (gr.) and 0.06*60=3.6 (gr).


Related Questions

Which of the following represents a solution to the equation d3 - 343?

Answers

I don’t see any multiple choice but d3 -343 is factored as (d-7)(d^2+7d+49)

The area of a trapezoid is 216 in2 and it two bases are 14 and 22 inches long. Find the height of the trapezoid.

Answers

Answer:

12 inches

Step-by-step explanation:

The formula for a trapezoid is

A = 1/2(a +b)h

The formula to find the height =

h = 2A/a + b

A= 216 in²

a =14 in

b = 22 in

Hence,

h = 2 × 216/14 + 22

h = 12 inches

The height of the trapezoid = 12 inches

Which of the following situations are equal to 20%? Select all that apply.

A) 5 out of 25
B) 8 out of 40
C) 2 out of 8
D) 16 out of 80
E) 12 out of 24

Answers

Answer:

all except C.

Step-by-step explanation:

Answer: A AND C IT SHOULD BE A BECAUSE IF YOU LOOK AT THE %

sunglasses cost 70 euros. the exchange rate is 1 euro = 0.859

Answers

Answer: 60.13 USD

Step-by-step explanation: 0.859 x 70 = 60.13

What is the mean for the data set below

Answers

Answer:

B) 8.5

Step-by-step explanation:

[tex]8+10+6+4+12+6+8+14=68\\\\\frac{68}{8} =\boxed{8.5}[/tex]

Option B should be the correct answer.

Hope this helps.

15 m
4 m
4 m
160°
5 m
Find the area of the figure. Round your answer to the nearest tenth.

Answers

Answer:

17.3

Step-by-step explanation:

[tex](2 \sqrt{3}) \times 5 = 17.3[/tex]

The area of a triangle is 36 cm square. Give three possible sets of dimensions for the triangle and explain whether or not you can also give the triangles' side length.

Answers

Answer:

[tex]Base = 6cm[/tex] and [tex]Height = 12cm[/tex]

[tex]Base = 4cm[/tex] and [tex]Height = 18cm[/tex]

[tex]Base = 9cm[/tex] and [tex]Height = 8cm[/tex]

Step-by-step explanation:

Given

Shape: Triangle

[tex]Area = 36cm^2[/tex]

Solving (a): Three possible dimensions

The area of a triangle is:

[tex]Area = 0.5 * Base * Height[/tex]

Let: [tex]Base = 6cm[/tex]

So, we have:

[tex]36= 0.5 * 6* Height[/tex]

[tex]36= 3* Height[/tex]

Solve for Height

[tex]12 = Height[/tex]

[tex]Height = 12[/tex]

So, a possible dimension is: [tex]Base = 6cm[/tex] and [tex]Height = 12cm[/tex]

Let: [tex]Base = 4cm[/tex]

So, we have:

[tex]36= 0.5 * 4* Height[/tex]

[tex]36= 2* Height[/tex]

Solve for Height

[tex]18 = Height[/tex]

[tex]Height = 18[/tex]

So, a possible dimension is: [tex]Base = 4cm[/tex] and [tex]Height = 18cm[/tex]

Let: [tex]Base = 9cm[/tex]

So, we have:

[tex]36= 0.5 * 9* Height[/tex]

[tex]36= 4.5* Height[/tex]

Solve for Height

[tex]8 = Height[/tex]

[tex]Height = 8[/tex]

So, a possible dimension is: [tex]Base = 9cm[/tex] and [tex]Height = 8cm[/tex]

So, the three possible dimensions are:

[tex]Base = 6cm[/tex] and [tex]Height = 12cm[/tex]

[tex]Base = 4cm[/tex] and [tex]Height = 18cm[/tex]

[tex]Base = 9cm[/tex] and [tex]Height = 8cm[/tex]

Solving (b): Can the side lengths be given

We can only determine the base and the height of the triangle, the third side length can not be determined using the available information

f(x) = -2x + 9 What is f(2h) ?

Answers

Answer:

f(2h) = -4h + 9

Step-by-step explanation:

Jacob:  Start with the given function f(x) = -2x + 9 and replace 'x' with 2h:

f(x) = -2x + 9 becomes:

f(2h) = -2(2h) + 9, or

f(2h) = -4h + 9

Answer:

-4h + 9

Step-by-step explanation:

f(x) = -2x + 9

f(2h) = -2(2h) + 9

f(2h) = -4h + 9

AHahahaahhahhah please please help no links please

Answers

Answer:

45

The scale factor is 9

So, 5 x 9 = 45

6x-4(3x-5)=2 solve for x.

Answers

Answer:

x = 3

Step-by-step explanation:

6x -4(3x-5) = 2

6x - 12x + 20 = 2

-6x = 2 - 20

-6x = -18

x = 3

If anyone can help :)

Answers

Answer:

irrational

Step-by-step explanation:

reason

[tex] - \frac{5}{52} [/tex]

This year, The Springfield Times had 11,322 subscribers. That is 85% more than they had last year, before the paper was bought out. How many subscribers did the paper have last year?

Answers

Answer:

The paper had 1698.3 subscribers last year.

Step-by-step explanation:

11,322 * 85% = 9623.7

11,322 - 9,623.7 = 1698.3

So, the answer is 1698.3

Hope this helps! :)

B3BB
Which graph represents the solution set of the inequality x+226?
986
08
4
9 S
7
8
6
+
0 1 -
SS 986
1
2
3
S
6
7
6 8
1 S 986
0
1
2 3
4.
5
9
7 8 9
0
1
2
S
4
5
9
B 2
6

Answers

Answer:

C is correct

Step-by-step explanation:

Firstly, we have to solve for x in the solution set of the inequality

We have this as follows;

x + 2 ≥ 6

x ≥ 6-2

x ≥ 4

To graph this, we consider the middle sign which is greater than or equal to

So, the inequality sign has to face the right side

secondly, it has to be shaded on the point 4 due to the fact that it has the ‘equal to’ beneath the single inequality symbol

so, the correct answer here is option C

Nolan reports the weather for TV 12's popular afternoon news show. Last month, he tracked
the noon temperature each day in the two largest cities in the area, Hooverville and Deeson
City.
Which city had a lower median temperature?
Hooverville
Deeson City

Answers

Answer:

Hooverville

Step-by-step explanation:

The Hooverville has lower median temperature.

What is Box and Whisker Plot?

A box and whisker plot is a method for abstracting a set of estimated data using an interval scale. Another name for it is simply a box plot. Most of the time, these are used to interpret data. It is one kind of graphical method that shows how the data in the dataset changes. The histogram can also be used to show the data. However, the histogram provides an adequate display. Since multiple sets of data can be displayed in the same graph, a box and whisker diagram will provide additional information, making it superior to a histogram.

Given Box and Whisker Plot of two cities which show's the  noon temperature each day,

From the graph Median of Hooverville is 36 and

median of Deeson City is 38

we can say that Hooverville has lower median temperature.

Hence the lower median temperature is of Hooverville.

Learn more about Box and Whisker Plot;

https://brainly.com/question/2742784

#SPJ2

Write the values in the boxes that make the statement true

Answers

Answer:

[tex]\frac{5}{3}xz^8*9x^6y^0z^2 = 15x^7z^{10}[/tex]

Step-by-step explanation:

Given

[tex]\frac{5}{3}xz^a*bx^cy^dz^2 = 15x^7z^{10}[/tex]

Simplify

[tex]\frac{5}{3}b*x^{1+c}z^{a+2}y^d = 15x^7z^{10}y^0[/tex]

Compare left and right sides and

Find b:

[tex]\frac{5}{3}[/tex] b = 15 ⇒ b = 15*3/5 = 9

Find c:

1 + c = 7 ⇒ c = 7 - 1 = 6

Find a:

a + 2 = 10 ⇒ a = 10 - 2 = 8

Find d:

d = 0

Solution is:

[tex]\frac{5}{3}xz^8*9x^6y^0z^2 = 15x^7z^{10}[/tex]

Convert 60% into a decimal and a Fraction(Simplify)
Decimal
Fraction

Answers

Answer:

decimal: .6

fraction: 3/5

I need help ASAP will give brainliest
Divide 1000 into two parts such that one part is a multiple of 47 and the other is a multiple of 19 ( Show me your working)​

Answers

= 1000

I know

I think hope this helps

Choose the <,>,= symbols to answer the question

Answers

Answer:

1. >

2,<

3.<

4.>

5,>

6.<

7.>

8.>

Step-by-step explanation:

Find the value of x.

Can someone help please?

Answers

5 I think it’s the only right answer

Find the volume of a right circular cone that has a height of 16 m and a base with a
circumference of 14.7 m. Round your answer to the nearest tenth of a cubic meter.

Answers

Answer:

Step-by-step explanation:

Start earning $78/hourly for working online from your home for few hours each day... Get regular payment on a weekly basis... All you need is a computer, internet connection and a little free time..... Read more here... www.Nifty2.com

if a water jug has a volume of 5000cm3 and a height of 45cm, what is the diameter of the jug?
a) 22cm
b) 9.5cm
c) 12cm
d) 15.6cm

Answers

If the water jug is in cylindrical shape the answer should be 12 cm

A number, x, rounded to 1 decimal place is 3.7
Write down the error interval for x.

Answers

Answer:

The error in rounding a number is half of the unit of measure. The number was rounded to the nearest 0.1 unit so the error is half of 0.1 which is 12⋅0.1=0.05  

2

1

​  

⋅0.1=0.05. Since 3.7+0.05=3.753.7+0.05=3.75 and 3.7−0.05=3.653.7−0.05=3.65, then the error interval is \boxed{3.65\le x&lt;3.75}.

Step-by-step explanation:

Please answer fast, it’s due in a hour.

Answers

Answer:

100.48 units³

Step-by-step explanation:

Volume of Cylinder: V = πr²h

volume = pi × radius² × height

V = 3.14 × 2² × 8

V = 100.48 units³

Answer:

100.84^units

Step-by-step explanation:

Match each function with its inverse function. Use function composition to determine your answers.
Please help

Answers

Answer:

For f(x) =  x^2 - 2x + 1, the inverse is g(x) = √x + 1

For f(x) = 2 - 5*x the inverse is g(x) = (2 - x)/5

For f(x) =  5*(x - 2) the inverse is g(x) = x*(1/5) + 2

for f(x) = (x - 2)^2 - 1 the inverse is g(x) = √(x + 1) + 2

Step-by-step explanation:

If we have two functions f(x) and g(x) such that these functions are inverse, then we have:

f( g(x)) = x

and

g( f(x)) = x

Let's start with the function:

f(x) = x^2 - 2x + 1

Notice that we can rewrite this as:

f(x) = x^2 - 2*x + 1 = (x - 1)^2

Because this is a quadratic function, the inverse function needs to have a square root, then the inverse function can be the third or fourth one.

Let's try with the last one:

g(x) = √x + 1

Then:

f( g(x)) = ( √x + 1 - 1)^2 = (√x )^2 = x

g( f(x)) = √(x - 1)^2 + 1 = (x - 1) + 1 = x

Then for the function:

f(x) = x^2 - 2x + 1, the inverse is: g(x) = √x + 1

Now let's find the inverse for the second function:

f(x) = 2 - 5*x

The inverse of this function will be also a linear function, and the slope of the inverse will be the inverse of this slope, then the inverse may be the first or second options.

Let's try with:

g(x) = (1/5)*x - 2

Then:

f( g(x) ) = 2 - 5*((1/5)*x - 2) = 2 - x + 10

Then this g(x) is not the inverse of the function.

Let's try with g(x) = (2 - x)/5

Then:

f( g(x)) = 2 - 5*(2 - x)/5 = 2 - 2 + x = x

g( f(x)) =  (2 - 2 - 5*x)/5 = 5*x/5 = x

For the function f(x) = 5*(x - 2)

The inverse should be the remaining linear function:

g(x) = x*(1/5) + 2

Then:

f( g(x)) = 5*(x*(1/5) + 2 - 2) = 5*x*(1/5) = x

g( f(x)) = (5*(x - 2) )*(1/5) + 2 = (x - 2) +2 = x

For the last function, f(x) = (x - 2)^2 - 1

The inverse function will be:

g(x) = √(x + 1) + 2

The compositions are:

f( g(x)) = (√(x + 1) + 2 - 2)^2 - 1 = (√(x + 1))^2 - 1 = (x + 1) - 1 = x

g(f(x)) = √((x - 2)^2 - 1 + 1) + 2 = √((x - 2)^2 + 2 = x

Answer:

PLATO ANSWER

Step-by-step explanation:

Expressions equivalent to 3^10

Answers

Answer:

59049+0

59048.1+0.9

59048.01+0.99

...

Step-by-step explanation:

There's infinite.

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{3^{10}}[/tex]

[tex]\mathsf{= 3\times 3\times3\times 3 \times 3\times 3\times3\times3\times3\times3 }[/tex]

[tex]\mathsf{3\times3 = \bf 9}[/tex]

[tex]= 9\times9\times 9\times 9\times9[/tex]

[tex]\mathsf{9\times9 = \bf 81}[/tex]

[tex]\mathsf{= 81\times81\times 9}[/tex]

[tex]\mathsf{81 \times 81 = \bf 6,561}[/tex]

[tex]\mathsf{= 6,561\times9}[/tex]

  [tex]\mathsf{\bf = 59, 049}[/tex]

[tex]\boxed{\boxed{\large\text{Answer: \huge \bf 59,049}}}\huge\checkmark[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Amy would like to spend at most $100 on lunches for the month. After the first day, Amy had spent $25. At most, how much money can Amy still spend?

Answers

Answer:

for the whole month $75.00 for each day around $2.60

Step-by-step explanation:

$100-$25=$75

$75÷29=$2.60 (rounded)

full number is $2.586206896551724

Can I please have Brainliest?

In UVW, u=51 inches,v= 61 inches and w= 62 inches.find the measure of angle V to the nearest degree

Answers

Answer:

49degrees

Step-by-step explanation:

Using the cosine rule

u² = v²+w²-2vwcosU

Substitute the given values

51² = 61²+62²-2(61)(62)cosU

2601 = 3721+3844-7564 cosU

2601 = 7565-7564cosU

-7564cosU = 2601-7565

-7564cosU = -4964

CosU =-4964/-7564

CosU = 0.6563

U = arccos(0.6563)

U = 49degrees(to nearest degree)

Drag the tiles to the correct boxes to complete the pairs.
Match the numbers in scientific notation with the corresponding numbers in standard notation.
2.32E9
2.32E8
4.31E-13
4.31E-6
232,000,000
0.00000431
2,320,000,000
0.000000000000431​

Answers

Answer:

the photo below

Answer:

2.32 · 10^9 = 2,320,000,000.

2.32 · 10^8 = 232,000,000.

4.31 · 10^-13 = 0.000000000000431​

4.31 · 10^-6 = 0.00000431

In a sale, the price of a sofa is reduced by 70%. The sale price is £255 What is the price before the sale?

Answers

So 255 is 30% of the original price
So what we need to do is divide 255 by 30 to get one percent
255/30=8.5
So 8.5 is one percent of the original price or one hundredth. So to get the original price multiply that by 100 and get 850.
The original price was £850.

Answer:

850

Step-by-step explanation:

Price x .30 (100%-70%)=sales price

price x .30 = 255

price = 255/.30

price = 850

WILL MARK AS BRAINLIST
The number 5.2 is which type of number?

Answers

5.2 is a Decimal number! Have a great day

Answer:

It is not an "integer" because it is a "decimal value".

It is not "irrational" because the decimal value terminates and does not repeat.

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