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lina2011 [118]
3 years ago
5

An alloy of silver and gold is to be recast with an addition of silver. This new alloy consists of 80 ounces and is to have only

one-fifth of an ounce of gold in 5 ounces.
What percentage of gold is in the new alloy after the recasting?
Mathematics
1 answer:
Liula [17]3 years ago
5 0

Answer:

What percentage of gold is in the new alloy after the recasting? 4

Step-by-step explanation:

(80/5)*(1/5)/80=0.04

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Make q the subject of the formula 2(q+p) = 1+5q. Give your answer in the form ap-b/c where a,b and c are all positive integers
musickatia [10]

Answer:

\frac{2p-1}{3}

Step-by-step explanation:

Since you want to get q only and q appears in both side of the equation. Try to isolate q to one side.

1) Expand 2(q+p)

2q + 2p = 1 + 5q

2) Move all q terms to one side

5q - 2q = 2p - 1

3q = 2p - 1

3) Divide 3 on both side (to isolate q)

q = \frac{2p-1}{3}

8 0
3 years ago
If i take a fourth of a number away from half the number, i get 10. what is the number?
Tasya [4]

I think the answer is 40.  

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3 years ago
Which of the following is a polynomial with rootsnegative square root of 5, square root of 5, and 3
Scrat [10]

Answer:

P(x) = x³ - 3x² - 5x + 15

Step-by-step explanation:

∵ The roots of the polynomial are -√5 , √5 , 3

∴ The polynomial has 3 factors:

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∴ P(x) = (x - √5)(x + √5)(x - 3)

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∴ P(x) = x³ - 3x² - 5x + 15

3 0
3 years ago
Can someone please explain the steps to solve these questions.
Amiraneli [1.4K]
Alright! So to solve these questions, you need to find out the difference. You can use ratios to solve this. For example, question #25:

A class had 30 pupils at the beginning of this school term, but now has 5 more pupils. What is the percent of increase?

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3 0
3 years ago
How would i solve this?
Flauer [41]

Answer: C

Step-by-step explanation:

The enequality includes x values equal to or greater than -2 and less than(but not equal to) 1.

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4 0
4 years ago
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