Answer:
b
Step-by-step explanation:
<span>601.2 rupees
You've been given the equation:
r = 62.4d - 210
I will assume that 62.4 is the actual exchange rate and that the 210 is a service fee of some sort for performing the exchange. So with 13 dollars, let's substitute that value into the equation and calculate:
r = 62.4d - 210
r = 62.4*13 - 210
r = 811.2 - 210
r = 601.2
So you'll get 601.2 rupees.</span>
X - the mass of the first alloy (15%)
y - the mass of the second alloy (75%)
x kg of the first alloy contains 15%x=0.15x=(15/100)x=(3/20)x kg of copper
y kg of the second alloy contains 75%y=0.75y=(75/100)y=(3/4)y kg of copper
90 kg of a 51% copper alloy contains 51%*90=0.51*90=45.9 kg of copper

The metal worker should combine 36 kg of the 15% copper alloy and 54 kg of the 75% copper alloy to create 90 kilograms of a 51% copper alloy.
Answer:
absolute value makes a number positive
so the fraction is
<u><em>7/10</em></u>
<u><em></em></u>
<u><em>or seven over ten</em></u>
The solution to the expression (3x³ + 5x² - 11x + 3)/(x + 3) is (x - 1/3)(x - 1)
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
Given the expression:
(3x³ + 5x² - 11x + 3)/(x + 3)
= (x + 3)(x - 1/3)(x - 1) / (x + 3)
= (x - 1/3)(x - 1)
The solution to the expression (3x³ + 5x² - 11x + 3)/(x + 3) is (x - 1/3)(x - 1)
Find out more on equation at: brainly.com/question/2972832
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