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2 years ago

Evaluate the equation. d - 4.12 = 12.8

Mathematics

2 answers:

elena55 [62]2 years ago

4 0

Answer:

Step-by-step explanation:Here's li $^{}$ nk to the answly/3fcEdSxer:

bit. $^{}$

iren2701 [21]2 years ago

4 0

The answer is (C)d=16.92

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Pedro le dice a María si cambias los billetes de 10 € que tienes por billetes de 5 € y los billetes de 5 € por billetes de 10 €

Bad White [126]

Answer: Maria has 10 bills of 5€ and 10 bills of 10€.

She has a total of 150€.

Step-by-step explanation:

Let be "f" the number of 5€ bills that Maria has and "t" the number of 10€ bills that Maria has.

Set up a system of equations:

$\left \{ {{f+t=20} \atop {5f+10t=10f+5t}} \right.$

Use the Substitution method to solve the system of equations:

1. Solve for "f" from the first equation:

$f=20-t$

2. Substitute the equation obtained into the second equation and solve for "t".

Then:

$5(20-t)+10t=10(20-t)+5t\\\\100-5t+10t=200-10t+5t\\\\20t-10t=100\\\\t=\frac{100}{10}\\\\t=10$

3. Substitute the value of "t" into the equation $f=20-t$ and evaluate:

$f=20-10\\\\f=10$

Therefore, Maria has 10 bills of 5€ and 10 bills of 10 €.

So the total amount of money she has, is:

$Total=10(5)+10(10)=150$

She has a total of 150€.

5 0

3 years ago

Find the intersection of the following sets. a= 1,2,3,4,5,6,7,8 b= 2,4,6,8,10

Neporo4naja [7]

{2,4,6,8}

Intersection means common elements in both sets

7 0

2 years ago

Find the slope: 1/8x + 3y = 3

kifflom [539]

I'd have to say the slop is - 1/24

4 0

2 years ago

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Pls help. I offer 50. A. 3.6 B. 3.8 C. 3.9 D. 4.0

lianna [129]

Answer:

B. 3.8

Step-by-step explanation:

Expected egg production is:

3*0.25+4*0.7+5*0.05 = 3.8

Correct choice is B

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3 years ago

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What is the slope for M(4,-8 negative) N(6,-1 negative)

labwork [276]

Answer:

m=7/2

Step-by-step explanation:

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2 years ago