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
Akimi4 [234]
3 years ago
6

Paul needs 40 pounds of 48% silver alloy to finish a collection of jewelry. How many pounds each of 45% silver alloy and 60% sil

ver alloy should he melt together to obtain the alloy he needs
Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
8 0
<span>Equation:
silver + silver = silver
0.45x + 0.60(40-x) = 0.48*40
----------------
45x + 60*40 - 60x = 48*40

--------
-15x = -12*40
x = (4/5)40
x = 32 lbs (amt of 45% slloy needed)
40-x = 8 lbs (amt of 60% alloy needed)</span>
You might be interested in
Which equation of the line that is parallel to the line 5x + 2y =12 and passes through point -2,4
Gnesinka [82]

Answer:

The equation of the line would be y = -5/2x - 1

Step-by-step explanation:

In order to find the equation of the line, we first need to find the slope of the original line. We can do that by solving for y.

5x + 2y = 12

2y = -5x + 12

y = -5/2x + 6

Now that we have a slope of -5/2, we know the new slope will be the same since parallel lines have the same slope. So we can use it along with the point in point-slope form to find the equation.

y - y1 = m(x - x1)

y - 4 = -5/2(x + 2)

y - 4 = -5/2x - 5

y = -5/2x - 1

3 0
3 years ago
If the sin 30° is 1 over 2, then the cos ____° = _____. (4 points) 60° ; 1 over 2 30° ; square root 2 over 2 60° ; square root 3
umka21 [38]

Step-by-step explanation:

\sin 30 \degree =  \cos 60 \degree = \frac{1}{2}  \\

5 0
2 years ago
Read 2 more answers
Evaluate the expression when<br> c=5/8<br> x= -3/16<br> 4x-c<br> Write your answer in simplest form.
Elis [28]
2 11/16 I believe is the answer
8 0
3 years ago
Please give me the answer to 8 WHOEVER EXPLAINS GETS BRAINLEST
Yuki888 [10]
I Lou think the answer is 84?
7 0
3 years ago
WILL MARK BRAINLIEST!!!PLZ HELP!!!
Andrei [34K]

Answer:

Step-by-step explanation:

Hello,

<em>"Ray says the third-degree polynomial has four intercepts. Kelsey argues the function can have as many as three zeros only."</em>

We know that Kelsey is right, a polynomial of degree 3 has maximum 3 zeroes, so it means that the graph of this polynomial has maximum 3 x-intercepts.

<u>So how Ray can be right too?</u>

we need to think of y-intercept, if we add the y-intercept then Ray can be right too,

as you can see in one example below

there are 3 x-intercepts and 1 y-intercept.

This being said, Ray is not always right. For instance x^3

has only 1 zero (multiplicity 3) its graph has only 1 intercept in the point (0,0)

hope this helps

6 0
3 years ago
Other questions:
  • Use deductive reasoning to show that the following procedure always produces the number 6. Procedure: Pick a number. Add 4 to th
    9·1 answer
  • What is the x- coordinate of the solution to the system of equations? 0.1x+0.5y=0.6 0.4x-1.2y=-5.6
    13·1 answer
  • What is 33.8 divided by 2.6 somebody please answer asap?
    7·2 answers
  • 9m+3m= please solve step by step I need to submit now
    12·1 answer
  • June and Sushil win some money and share it in the ratio 3:1. June gets £20 more than Sushil. How much did Sushil get?Caroline,
    9·1 answer
  • Solve the system by graphing y=-1/2x-2 y=-3/2x+2
    14·1 answer
  • Attachment Below: Please help!
    12·2 answers
  • Combine these radicals.
    13·1 answer
  • In January 2011, the national average for 5 gallons of gasoline was $17.20.<br> Please hurry
    15·1 answer
  • Scott has 18 3/4 gallons of gas in his tank. If he uses 3/50 gallons of gas per mile he drives how many miles can he drive befor
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!