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Rina8888 [55]
2 years ago
11

- 7x-2y=-13 x - 2y = 1 Solve by substitution

Mathematics
2 answers:
denis-greek [22]2 years ago
7 0

Answer:

y = 3/8, x = 7/4

Step-by-step explanation:

x = 2y+1

-7(2y+1) - 2y = -13

-14y - 7 - 2y = -13

-16y - 7 = -13

-16y = -6

y = 3/8

Plug the value for y into one of the equations to solve for x

pshichka [43]2 years ago
5 0

multiply and subtract and do the x y across

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When using rational expectations, forecast errors will, on average, be ________ and ________ be predicted ahead of time. A) zero
mafiozo [28]

Answer:

A) zero; cannot

Step-by-step explanation:

In line with the principle of rational expectations, expectation errors are unpredictable. The expectations of all available information will not differ from the optimal projections.The word optimal projection is inexorably intertwined with the best guess in rational expectations theory.

4 0
3 years ago
This is the last time its happened twice please i need the answer
slamgirl [31]

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Step-by-step explanation:

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2 years ago
Which sample fairly represents the population? Check all that apply. measuring the heights of every fiftieth person on the schoo
solniwko [45]
Option 1:

<span>Measuring the heights of every fiftieth person on the school roster to determine the average heights of the boys in the school
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Comment: this might not be a good idea for fairness as we only wish to determine average height of the boys. Taking a group of 50 people randomly, might not give us the same number of boys every time.

Option 2: 

<span>Calling every third person on the soccer team’s roster to determine how many of the team members have completed their fundraising assignment 

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Option 3:
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Observing every person walking down Main Street at 5 p.m. one evening to determine the percentage of people who wear glasses
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Option 4: 

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5 0
3 years ago
Read 2 more answers
If there was 200 kids= 100% and 43 of them left what is the percent
STALIN [3.7K]

Answer:

It would be 86 as 43% of 200 is 86

Step-by-step explanation:

5 0
2 years ago
how can i find a percentage if its not over 100? For example the fraction 4/25, how i could i turn that into a percent
geniusboy [140]

Answer:

Step-by-step explanation:

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basically the equation for finding percent would be

(x/y)100

5 0
2 years ago
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