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liubo4ka [24]
3 years ago
10

A gold alloy contains 15 milligrams of gold for every 4 milligrams of copper. A jeweler uses 48 milligrams of copper to make the

alloy. How much gold does the jeweler use to make the alloy?
Mathematics
1 answer:
Elina [12.6K]3 years ago
7 0

Answer:

There are 180 milligrams of gold in the alloy

Step-by-step explanation:

because i know

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180 product of a prime factor using indices
zvonat [6]
Start with 180. 
<span>Is 180 divisible by 2? Yes, so write "2" as one of the prime factors, and then work with the quotient, 90. </span>

<span>Is 90 divisible by 2? Yes, so write "2" (again) as another prime factor, then work with the quotient, 45. </span>

<span>Is 45 divisible by 2? No, so try a bigger divisor. </span>
<span>Is 45 divisible by 3? Yes, so write "3" as a prime factor, then work with the quotient, 15 </span>

<span>Is 15 divisible by 3? [Note: no need to revert to "2", because we've already divided out all the 2's] Yes, so write "3" (again) as a prime factor, then work with the quotient, 5. </span>

<span>Is 5 divisible by 3? No, so try a bigger divisor. </span>
Is 5 divisible by 4? No, so try a bigger divisor (actually, we know it can't be divisible by 4 becase it's not divisible by 2)
<span>Is 5 divisible by 5? Yes, so write "5" as a prime factor, then work with the quotient, 1 </span>

<span>Once you end up with a quotient of "1" you're done. </span>

<span>In this case, you should have written down, "2 * 2 * 3 * 3 * 5"</span>
5 0
3 years ago
Read 2 more answers
F(x) = x2 - 4x - 21.
mote1985 [20]

Answer:

y-intercept = (0,-21)

vertex = (2,-25)

Step-by-step explanation:

8 0
3 years ago
I need to know the answer to this problem plz
jekas [21]
Yes because 6×6 is 36 and 9×4 is 36.
the blue shows who will get the free apple juice and the red the free popcorn the last one is the 36th person

8 0
3 years ago
a craftsman drill is on sale for $99.99. If the sales tax rate is 7%, how much will molly have to pay for the drill?
Nadya [2.5K]
99.99 x (7%/100)= 6.9993
99.99+6.9993= 106.9893 (round up)
ANWSER- $106.99
Hope this helped.
8 0
4 years ago
Write an integer for: a deposit of $45 * Plz help fast!
Mice21 [21]

Answer:

$45

Step-by-step explanation:

  1. A deposit is positive, so the integer will be positive.
  2. An integer is a whole number that's not a fraction, so a positive integer for 45, would be 45.

I hope this helps!

6 0
3 years ago
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