3 years ago

• complete assurance of learning exercise 7d, steps 1 and 2, on text page 240.

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

6 0

Bgguytdtsrawetestryfyguhjjiugyfudtrsrettykllkml

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Which expression is equavelnt to 3x+14+3x+10

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3x+3x=6x

14+10=24

6+24=30x with a 2 on top

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Which expressions are equivalent to -90-60w−90−60wminus, 90, minus, 60, w?

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Step-by-step explanation:

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what is the solution to the system of equations? y = 2x – 3.5 x – 2y = –14 (–7, 3.5) (3.5, –7) (7, 10.5) (10.5, 7)

AnnyKZ [126]

we have the system of equations

$y=2x-3.5$ --------> equation $1$

$x-2y=-14$ --------> equation $2$

Multiply by $2$ equation $1$

$2y=4x-7$ --------> equation $3$

Adds equation $2$ and equation $3$

$x-2y=-14 \\ 2y=4x-7\\ --------\\ x=-14+4x-7\\ 4x-x=14+7\\ 3x=21\\ x=7$

Find the value of y

$y=2x-3.5$

$y=2*7-3.5$

$y=10.5$

the solution of the system is the point $(7,10.5)$

therefore

the answer is

$(7,10.5)$

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The sum of 2 numbers is 10,and there product is 24 what are these 2 numbers ?

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A researcher obtained the average SAT scores of all students in each of the 50 states, and the average teacher salaries in each

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The existence of a negative correlation between variables in a research work suggests that a lurking variable is present in the data, which happens to be the case with the work of this researcher.

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