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3 years ago

Solve the system of equations. -5x+2y=9 y=7x

Mathematics

2 answers:

posledela3 years ago

6 0

Answer:

x = 1

Step-by-step explanation:

Substitute y with 7x.

-5x + 2(7x) = 9

Solve parentheses.

-5x + 14x = 9

Combine like terms.

9x = 9

Now solve the equation.

9x = 9

/9 /9

-----------

x = 1

Law Incorporation [45]3 years ago

4 0

Answer:

uuuuuuuuuuum

Step-by-step explanation:

maybe it's...

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Complete Question

The picture of the stem plot National and American League is shown on the first uploaded image

Answer:

The value is $\= x = 50.14$

Step-by-step explanation:

From the question we are told that

The stem plot for National League is

$2\ \ \ \ \ 9\\3\ \ \ \ \ 1 \\4\ \ \ \ \ 2\ 6\ 7\ 8\ 8\\5 \ \ \ \ \ 3\ 5\ 5\ 5\\6 \ \ \ \ \ 3\ 3\ 7\\7$

The sample size is n = 14

Generally the stem plot is interpreted in this manner

The numbers on the first column represents the tens of a two digit number while the second column holds the possible unit number the tens in the first column can be combined with

for example 4th row

5 3 5 5 5

is equivalent to

53 55 55 55

Generally the mean for the national league is mathematically represented as

$\= x = \frac{29 + 31 + \cdots + 67}{14}$

=> $\= x = \frac{702}{14}$

=> $\= x = 50.14$

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