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2 years ago

If both lines had been dotted lines instead, how might that have affected the possible solutions?

Mathematics

1 answer:

prisoha [69]2 years ago

5 0

Answer:

Step-by-step explanation:

You will have less possible solution y is less than or y is greater than so everything touching the line will not be a solution just everything else.

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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

How do you solve this using a picture and the work?

hoa [83]

Okkk so u need to use the Pythagorean Theorum.
$a x^{2} +b x^{2} =c x^{2}$

a=x
b=1
c=5

so...
$c x^{2} -b x^{2} =a x^{2}$

$5 x^{2} -1 x^{2} =a x^{2}$

Solve that

4 0

3 years ago

Courtney receives a mailer to a local store. In the mailer, there are two coupons which cannot be combined. One coupon is for $2

STatiana [176]

Answer:

B, Courtney should use the 15% off coupon

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3 years ago

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umka21 [38]

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3 years ago

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The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. if a 9-kg object st

sergiy2304 [10]

Answer:

I think it is b

Step-by-step explanation:

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