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3 years ago

Can someone help me plz

Mathematics

1 answer:

erica [24]3 years ago

5 0

Answer:distribute basically means multiply by the numbers in the ( )

Step-by-step explanation: use Photomath

Multiply 7 and 4a

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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

PS. Please give brainliest answer this was a lot of working out

3 0

3 years ago

Graphing points for y=|2x-1| Pls help first person to answer get the Brainly points

Olin [163]

Answer:

X-intercept= (1/2,0) Y-intercept= (0,1)

Step-by-step explanation:

You're welcome :)

8 0

3 years ago

Please help me with only one question. 20 points

Ostrovityanka [42]

Answer:

141.3 cubic inches

Step-by-step explanation:

The volume of a cylinder is found using the volume formula $V=\pi r^2h$ .

The radius is half the diameter 6 which is 3.

Substitute h=5 and r = 3.

$V = \pi r^2h\\V = \pi (3^2)(5)\\V=\pi *9*5\\V = 45\pi \\V= 141.3$

3 0

3 years ago

Please help me if you help me the first one will get brainless

alexgriva [62]

Answer:

2/5

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

1,8 О, ОР 81, 817 0,00 3 16 3 3 5 0 3

Tema [17]

Answer:

G o o g l e >:>

Step-by-step explanation:

8 0

3 years ago