a jeweler wants to mix gold costing $17 per gram with an alloy costing $7 per gram to make a ring weighing 30 grams and costing $390. how much of each metal is needed

Answers

Answer 1

Answer:

15 grams of each

Step-by-step explanation:


Related Questions

Write the SLOPE INTERCEPT FORM of the equation of the line parallel to y=23x+19 through the point (6, 2). First to answer correctly gets brainliest!

Answers

Answer:

y = 23x - 136

Step-by-step explanation:

Since the lines are parallel, they have the same slope. So, the slope of the new line is 23 as well.

Now we have: y = 23x + b

plug in the points that are on this line (6,2) :

2 = 23 x 6 + b

2 = 138 +b

-136 = b

Line: y = 23x - 136

help please, what’s the answer to this?

Answers

The answer is c , c yea

What is the opposite of 17

Answers

Answer:

-17

Step-by-step explanation:

"the opposite of 17 is -17. You can figure this out by finding the negative version of 17, or the additive inverse of 17. Opposites, when added together, create a sum of 0."

Answer:

-17?

Step-by-step explanation:

Hope this is useful!

Have a nice day!

PLS HELP!! GIVING BRAINLIST!!

Michael uses a blend of dark chocolate and milk chocolate to make the ice cream topping at his restaurant. He needs to buy 100 kg of chocolate in total for his next order. Dark chocolate costs $12 per kilogram, milk chocolate costs $10 per kilogram, and he wants to spend $1120 total.

Let d be the number of kilograms of dark chocolate he buys and m be the number of kilograms of milk chocolate he buys.

Which system of equations represents this situation?

Answers

Answer:

d + m = 100

12d + 10m = 1120

Step-by-step explanation:

d = 60

m = 40

Answer: 60 kg dark chocolate, 40 kg milk chocolate

Step-by-step explanation:

Okie soooo

Let's name the variables (which they did for us lol)

d = kg of dark chocolate and m = kg of milk chocolate

He needs 100 kg of chocolate

d + m = 100

and he wants to spend 1120 when dark chocolate costs $12/kg and milk chocolate costs $10/kg

12d + 10m = 1120

Now we solve the system (I shall use elimination method)

Multiply the first equation my -10

-10(d + m) = (100)(-10)

which becomes

-10d - 10m = -1000

12d + 10m = 1120 (rewrite the second equation)

------------------------- (add the two equations together)

2d = 120

d = 60

now substitute d into either equation

60 + m = 100

m = 40

60 kg dark chocolate

40 kg milk chocolate

you spend $40 on 5 pounds of concrete what is the unit rate in dollars per pound?​

Answers

Answer:  $8

Step-by-step explanation:

$40 divided $5 by equals $8.

answer: 8
because 40 divided by 5 is 8

please help me i really need my grade up

Answers

Answer: check out my music

Sometimes the best response is none at all

You probably would’ve left your m.ans, that ain’t one hundred, dawg

See nowadays, it’s like the fans doing the po.lice job

е

Step-by-step explanation:

Annika is right, Chris accidentally added the 2 to 15.
Please mark as brainliest.

What is perimeter of the semi circle?

Answers

Answer:

54.22 mm

Step-by-step explanation:

Find the circumference of the circle and then divide it by 2.

We start with the formula for the circumference for the circle:

C = 2πr

To find r, divide 22 by 2:

22/2=11

Now find the cicumference:

C = 2πr = 2(3.14)(11) = 108.46 mm

NOW, to find the perimeter of the semicircle, divide the circumference by 2:

108.46/2 = 54.22 mm

7. Construct a pie chart to depict the data given below:
Small
industries
Various fields
Employment Other
Agriculture
Transport
Power
Allocated
1200
1800
expenditure (in lakh)
3000
2400
1200
2400​

Answers

aku gak tau apa Jawaban nya Jadi aku Minta maaf

(8c+8)–(c+3)
answer-

Answers

Answer:

7c + 5

Step-by-step explanation:

(8c+8)–(c+3)

8c - c = 7c

8 - + 3 = 5

7c + 5

Answer:

7c+5

Step-by-step explanation:

(8c+8)-(c+3)

8c+8-c-3

8c-c+8-3

7c+8-3

7c+5

Two bags of chips cost $1.50.
Will one bag cost more or less than $1.50?

Answers

Answer:

Less

Step-by-step explanation:

If 2 bags of chips cost $1.50, 1 bag of chip costs half that price.

Tina makes 480 sandwiches. She only makes tuna sandwiches, beef sandwiches, ham sandwiches and cheese sandwiches

Answers

Answer:

she will have 120 each sandwich

Step-by-step explanation:

Kiemanh is solving the equation 15r-6r= 36. What is the value of r?
O 2
O 4
O 15
O 27

Answers

Answer:

4

Step-by-step explanation:

15r-6r=36

9r=36

r=36/9

r=4

Find the volume of the cone. Use 3.14 for pi.

Answers

Answer:

V≈157.08

Step-by-step explanation:

I hope this helps

WHAT WOULD THIS BEE!

Answers

Answer: 98

Why? The angle is alternate exterior angle making it even to the angle labeled 98

Answer:

98

Step-by-step explanation:

It would be the same amount because when the lines are parallel, the corresponding angles will also be the same.  

We can tell the difference between the two types of angles (Supplementary and complementary) 98 and 82 would be the two types of angles.

So, the angle measure would be 98.

2. Factorise : (i) 9x² + y² + 64 - 6xy +16y - 48x​

Answers

Answer:

9x² + y² + 64 - 6xy - 16y - 48x

= 9x² - 6xy - 48x + y² - 16y + 64

= 9x² - 6x(y - 8) + y² - 2.8y + 8²

= (3x)² - 6x(y - 8) + (y - 8)²

= [3x - (y - 8)]²

= (3x - y + 8)²

Step-by-step explanation:

What is a, the initial amount, for the function: f(x) = 300(1.16)*?

Answers

Answer:   300

====================================================

Explanation:

One general template of exponential functions is

f(x) = a*(b)^x

The 'a' is the initial amount, which in this case is a = 300

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

Extra info:

The b is the base of the exponential, which is b = 1.16

The value of b is helpful to determine if you have exponential growth or decay, and how much of either. Because b = 1.16 is greater than 1, it indicates exponential growth. The rate of growth is found by solving 1+r = 1.16 to get r = 0.16, which leads to 16% growth.

Which expressions are equivalent to 7(3/4 x -3)?

Answers

The answer is number two

Calculate the distance traveled when moving at a rate
of 60mph for 3.5hrs.

Sentence Answer

Answers

Answer:

The distance traveled when moving at a rate of 60mph for 3.5 hours is 210 miles.

Hope this helped!

If Sam drives his car 171 miles in 9 hours, what is his speed​

Answers

171/9=19mph hope it helps

the nth term of a sequence is n+7
work out the 10th term

Answers

Answer:

17

Step-by-step explanation:

Substitute n = 10 into the n th term rule, that is

a₁₀ = 10 + 7 = 17

You have to replace the nth term which is given as 10

10+7=17

Answer:17

Please help!! Im being timed SEE BELOW!!

Answers

Answer:

The answer is

15=B

16=C

17=D

18=B

19=D

20=D

I am a math teacher If you need any explanation you can communicate with me on Whats on this number +201557831028

Suppose that 62% of people own dogs. If you pick two people at random, what is the probability that they both own a dog? Give your answer as a decimal (to at least 3 places) or fraction

Answers

Answer:

0.62*0.62=0.3844

Step-by-step explanation:

Find the value of the trigonometric ratio Sin C

Answers

Answer:

20/29

Step-by-step explanation:

Sin is Opposite/Hypotenuse. The opposite leg is 20, and the hypotenuse is 29.

The circumference of a circle is the around it?

Answers

Answer:

Yes

Step-by-step explanation:

ANSWERS TO 7-8 ASAP PLZZZ MARKINV BRAINLIEST

Answers

Answer:

7. B

8. D

Step-by-step explanation:

What is the y_intercept of the equation y=2x+5 (5 /3/2)

What is the slope of the equation y=2x+5​

Answers

y intercept is 5
see the photo attached

Triangle ABC is similar to Triangle PQR what is the value of X in centimeters

Answers

Answer:

x=19.5cm

Step-by-step explanation:

15÷10= 1.5

13x1.5

=19.5cm

hey what's
[tex]3 {}^{2} - 2 {}^{2} [/tex]

Answers

Answer:

5

Step-by-step explanation:

3² - 2² = 9 - 4 = 5

Answer:

5 is the answer

Step-by-step explanation:

hope it helps

(-2, 3), (3, -2), (1, 3), (0, -2)
DOMAIN
RANGE

Answers

Answer:

(-2, 3) = domain -2 = range 3

(3, -2) = domain 3 = range -2

(1, 3), = domain 1 = range 3

(0, -2) = domain 0 = range -2

Step-by-step explanation:

Given that
y
= 8 cm and
θ
= 34°, work out
x
rounded to 1 DP.

Answers

Answer:

Step-by-step explanation:

if y is hypotonuse and x is opposite side:

sin 34=x/8

8*sin 34=x

x=4.47 (3 sf)

tell me in comment if i interpreted question wrong ._.

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