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faust18 [17]
4 years ago
8

A line of best fit is drawn for the set of points shown on the graph. Which point is an approximate for x=30 from the line of be

st fit?
(23,30)
(30,38)
(44,30)
(30,72)

Mathematics
2 answers:
Arada [10]4 years ago
4 0

Answer:

(30,38)

Step-by-step explanation:

Q asking 4 an approximate for x=30

so (23,30) n  (44,30) are out

from the line of best fit:

x=0, y=4

x=16, y=22

so when x increases by 16, y increases by 22-4=18

so at x=32, y=22+18=40

at x=30, the nearest n best ans is (30,38)

Viktor [21]4 years ago
3 0

Answer:

(30,38)

Step-by-step explanation:

y=mx+b

Slope looks like 4/4 = 1

Y-int (b) = 4

so y = 1x+4

If x = 30, then y = 34 give or take a few

(30,38) is the closest

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The answer is 2. 2/4= 1/2
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Find a substance half-life in days. round your answer to the nearest tenths
jeka57 [31]
A 33 gram sample has k value of .1124
(Actually I think the problem SHOULD be worded: A 33 gram sample has k value of -.1124/days)

See attached graphic:
Half-Life = ln (.5) / k
Half-Life = -.693147 / -.1124/days
Half-Life = <span> <span> <span> 6.1667882562 </span> </span> </span> days

Source:
http://www.1728.org/halflif2.htm





3 0
3 years ago
Read 2 more answers
Nita gana $ 20 por semana paseando al perro de su vecino. También gana $ 2 por cada rosa que vende de su jardín de rosas. Nita q
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Answer:

La situación está representada por el siguiente sistema:

y = 20+2\cdot x

y \ge 50

Donde:

x - Cantidad de rosas vendidas semanalmente.

y - Ganancia semanal, medida en dólares.

Step-by-step explanation:

De acuerdo con el enunciado, Nita gana una cantidad fija cada semana por pasear al perro de su vecino, con un monto de $ 20, mientras que gana en función de la cantidad de rosas a vender, con un valor unitario de $ 2. Si ella desea ganar al menos $ 50, por tanto, se requiere construir el siguiente sistema, conformado por una ecuación y una inecuación:

y = 20+2\cdot x (1)

y \ge 50 (2)

Donde:

x - Cantidad de rosas vendidas semanalmente.

y - Ganancia semanal, medida en dólares.

4 0
3 years ago
What is the value of this expression (4.08)(0.7)?
elena-s [515]
<span> (4.08)(0.7) = 2.856

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Answer:

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Step-by-step explanation:

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Thus, N=N_{0}e^{-kt} becomes

23=46{\times}e^{-0.1374t}

\frac{23}{46}=e^{-0.1374t}

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t=\frac{ln\frac{1}{2}}{-0.1}

t=\frac{-0.6931}{-0.1374}

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3 years ago
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