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muminat
3 years ago
5

3. A penny is made by combining 0.1 g of a copper alloy that costs $5.50 per kilogram (1000 grams) with

Mathematics
1 answer:
lbvjy [14]3 years ago
6 0
.0001*5.5 + 1.5*x = 2
x=1.33 kg
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Which best explains what determines whether a number is irrational?
rusak2 [61]
<span>1.) Is 64 squared rational or irrational?
Ans: Rational
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2.) Is -1.2 repeating decimal rational or irrational?
Every repeating decimal is rational.
Every non-repeating decimal is irrational.
All whole numbers are rational.
All fractions are rational.
nth roots of a^k are irrational unless k is a multiply of n.
Example: The cube root of 3^6 is rational but the cube root of 3^5 is not.
Cheers,
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6 0
3 years ago
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A car travels 17 miles on one gallon of gas.
Margarita [4]

Answer:

y*17x

Step-by-step explanation:

y is a gallon so LEARN!

7 0
3 years ago
Multiply: (5x2y – 3xy2)(3xy2 + 5x2y)<br> Please help I need to get this one right!
Aliun [14]

Answer:

(1): "*-5x2y" was replaced by "*(-5x2y)".

(2): "x2"   was replaced by   "x^2".  1 more similar replacement(s).

STEP

1

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Equation at the end of step 1

 (3x • (y2)) • (0 -  (5x2 • y))

STEP

2

:

Equation at the end of step

2

:

 3xy2 •  -5x2y

STEP

3

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Multiplying exponential expressions :

3.1    x1 multiplied by x2 = x(1 + 2) = x3

Multiplying exponential expressions :

3.2    y2 multiplied by y1 = y(2 + 1) = y3

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6 0
3 years ago
Would be great if someone can help with this.
Neporo4naja [7]

Answer:

144

Step-by-step explanation:

In a regular decagon like the one shown in the picture each angle is 144 degrees and it all adds up to 1,440. If you want proof search up "angle of a decagon"

8 0
2 years ago
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Serggg [28]

Answer:

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-3x = 9.3

x = 9.3/-3

x = -3.1

6 0
3 years ago
Read 2 more answers
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