4 years ago

How to factor 2x^2-9x-5

Mathematics

1 answer:

Vesna [10]4 years ago

4 0

Try using the app photo math

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After 12:00, the number of people in Mal-Wart

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Step-by-step explanation:

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What ten ratios can you make out of the numbers 7, 12, 3, 6, and 2?

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4 years ago

I need help plz:((((((((((

pashok25 [27]

Answer:

a) $y=\frac{28}{75}(x-1900)+47.3$

b) 86.5 years

Step-by-step explanation:

All values are rounded to 2 decimal places

a) We can find line by using y =mx+b

$y=mx+b\\m=\frac{y^{2}-y^{1} }{x^{2}-x^{1}}\\m=\frac{69.7-47.3}{1960-1900} \\m=\frac{22.4}{60} \\m=\frac{28}{75}\\c=y-intercept\\y-intercept=47.3\\y=\frac{28}{75} (x-1900)+47.3$

Therefore the line of best fit is $y=\frac{28}{75}(x-1900)+47.3\\$

b) We can do this by using the formula of the best fit line to estimate the life expectancy of someone born in 2005

$y=\frac{28}{75}(x-1900)+47.3\\y=\frac{28}{75}(2005-1900)+47.3\\y=\frac{28}{75}\times105+47.3\\y=86.5$

Therefore the estimated life expectancy of someone born in 2005 is 86.5 years

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3 years ago

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Lera25 [3.4K]

Answer:

Step-by-step explanation:

PEMDAS

6/ 2(1+2)

6 divided by 2 (3)

multiply 2(3) =6

6/6 =1

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