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Mars2501 [29]
3 years ago
11

Consider the following system of equations.

Mathematics
1 answer:
Dmitrij [34]3 years ago
6 0

Answer:

C. When the equations -10x + 5y = -60 and -3x − 5y = -5 are added together, a third linear equation, -13x = -65, is formed, and it shares a common solution with the original equations.

Step-by-step explanation:

2x-y=12

-3x-5y=-5

multiply the first equation by -5

-10x +5y = -60

add the 2 equations together

-3x-5y=-5

-10x +5y = -60

-------------------------

-13x = -65

We use the addition property of equality which says adding the same thing to both sides, doesn't change the equation, so we will get the same answer as the original equation

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Rory earned an 84% on his test. He answered 21 questions correctly. How many total questions were on the
Anna35 [415]

Answer:

21 is 84% to 25, so there would be 25 total questions on the test

4 0
3 years ago
PLS HELP ASAP!!
zepelin [54]

Answer:

D

Step-by-step explanation:

A = P(1 + \frac{r}{n})^{nt}\\

[5000* (1+0.125)]/12 =234.375, rounds up to $234.38

8 0
3 years ago
17. El precio de los terrenos en Lima es proporcional al área e inversamente proporcional a su distancia con respecto al centro
grin007 [14]

Answer:

375000

Step-by-step explanation:

We have that in this case the following proportion would be fulfilled:

Price * Distance / area

Now, we have that for a distance of 45 km and an area of 900 m ^ 2 the price is 250,000, now for a distance of 40 km but with an area of 1,200 m ^ 2, how would the price be, we replace:

250000 * 45/900 = P * 40/1200

12500 * 1200/40 = P

P = 375000

Which means that for these conditions the price is 375000.

3 0
3 years ago
Resuelve el siguiente problema aplicando las estrategias de solución de problemas.
scoundrel [369]
Say it in english so i cant try to help
7 0
2 years ago
An art supply store buys paintbrush sets for $2 and sells them at a markup of 240%. One day, they decide to put the sets on sale
pav-90 [236]

Answer:

A. <em>6.12</em>

Step-by-step explanation:

if you mark up 2.00$ with 240% you get 6.80 $

then, 0.68 is 10% of 6.80%

if you subtract 0.68 your answer will be 6.12$

So your answer is A. 6.12$

5 0
2 years ago
Read 2 more answers
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