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2 years ago

Plz answer I will crown brainlist

Mathematics

2 answers:

NNADVOKAT [17]2 years ago

6 0

Answer: 6 and 3!

Step-by-step explanation:

nikitadnepr [17]2 years ago

5 0

The answer is 6 and 3 tell me if you need a explanation

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What is the slope of y=-4?

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Answer:

m=0

Step-by-step explanation:

The slope is m=0 and the Y intercept should be b= -4 .

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The population of bacteria in a petri dish doubles every 12 h. The population of the bacteria is initially 500 organisms. How lo

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The answer is 8.1 h

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2 years ago

3y - 6 + 4x = 0 <br><br>A, B, C, or D

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Answer:

Step-by-step explanation:

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2 years ago

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€.

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3 years ago

7x + 2y = 24<br>8x + 2y = 30

bagirrra123 [75]

(8x + 2y) - (7x + 2y) = 30 - 24

X = 6

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