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koban [17]
3 years ago
7

Solve the system of equations using substitution.

Mathematics
1 answer:
Radda [10]3 years ago
6 0

Answer:

C. No solution.

Step-by-step explanation:

y = −2x + 1

4x + 2y = −1

Substituting y = -2x + 1 in the second equation:

4x + 2(-2x + 1) = -1

4x - 4x + 2 = -1

2 = -1  which is  absurd so there is no solution.

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6(5 + 3x) is equivalent too
Artyom0805 [142]

Answer:

30+18 x

Step-by-step explanation:

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2 years ago
At the local animal shelter, there are 35 cats and 42 dogs. What is the ratio of dogs to cats at the local animal shelter?
postnew [5]

9514 1404 393

Answer:

  6 : 5

Step-by-step explanation:

The ratio is ...

  dogs : cats = 42 : 35 = (7·6) : (7·5) = 6 : 5

The ratio of dogs to cats at the shelter is 6 to 5.

6 0
3 years ago
Jessica has an account with a credit union. Her account earns 2.4% simple interest yearly. Exactly a year and a half ago, she op
Dafna1 [17]
The basic equation for interest is the investment amount(x) times the time in years(y) times the percent of interest(z).

That makes the equation:

x·y·z= amount with interest.

Lets plug in the numbers:

$900 x 1.5 x 2.4%

Now turn the percent into a decimal:

2.4% ----> .024

Now the equation is:

$900 x 1.5 x .024

Now do the math:

$900 x 1.5 = 1350
1350 x .024 = 32.4
1350 + 32.4 = 1382.4

The final answer is $1382.40

Hope this helps!
6 0
2 years ago
What is the y-intercept of the line whose equation is y=1/2x-3​
Aleksandr [31]

Answer:

-3

Step-by-step explanation:

y=mx+b

3 0
3 years ago
Your cell phone plan allows you 500 minutes to
iren2701 [21]

Answer:

500 ≤ 260 + 6x

240 ≤ 6x

40 ≤ x

x is the number of minutes you can use per day.

3 0
3 years ago
Read 2 more answers
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