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storchak [24]
4 years ago
9

Help with slope please....

Mathematics
2 answers:
masha68 [24]4 years ago
6 0

Answer:

1. 1 Calorie Per Minute

2. 5/20 (Simplified = 1/4)

Really Hope This Helps :D

Step One: Identify two points on the line.

Step Two: Select one to be (x1, y1) and the other to be (x2, y2).

Step Three: Use the slope equation to calculate slope.

(Equation For Step Three is  y=mx+b where m is the slope and b is the y-intercept.

Enjoy :D

OlgaM077 [116]4 years ago
4 0

Answer:

Part A: 4 calories per minute.

Part B: The slope is 1/2

Step-by-step explanation:

Part A: We look at the first point (40,10). 40 divided by 10? 4. We can check this by the second point (60,15). 60 divided by 15? Also 4.

Part B: Slope is found by 'rise over run' or rise/run. We take the first point (40,10). How many to get the our second point (60,15)? We 'rise' 1 and 'run' 2. Or we go up 1 and move to the right 2 times to get to (60,15). Since the line is going up, it's positive. Hope this helps!

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A biologist recorded a count of 337 bacteria present in a culture after 5 minutes and 699 bacteria present after 15 minutes.
hoa [83]

The initial population was 234.

<em><u>Explanation</u></em>

<u>Formula for the exponential growth</u> is:   A= P*e^r^t , where P is the initial amount, A is the final amount, r is the rate of growth and  t  is the time duration.

There was 337 bacteria after 5 minutes and 699 bacteria after 15 minutes. So, the equations will be......

337=P*e^5^r .................................. (1)\\ \\ 699=P*e^1^5^r ................................. (2)

Now dividing equation (2) by equation (1) , we will get .......

\frac{699}{337}=\frac{e^1^5^r}{e^5^r} \\ \\ e^1^0^r = \frac{699}{337}

<u>Taking 'natural log'</u> on both sides.........

ln (e^1^0^r) = ln (\frac{699}{337})\\ \\ 10r= 0.7295....\\ \\ r= 0.07295.... \approx 0.073

Now, plugging this r=0.073 into equation (1), we will get......

337= P*e^5^(^0^.^0^7^3^)\\ \\ 337= P*1.4405 \\ \\ P= 233.946 \approx 234

So, the initial population was 234.

7 0
3 years ago
Lily is at buckingham fountain (5,5) and wants to meet david, who is at millennium park (2,1) for lunch. They want to meet at th
Nat2105 [25]
(3.5,3.5) because then you would just find the midpoint in between the two point.
4 0
4 years ago
Which of these is correct?
icang [17]

Answer:

the second one

Step-by-step explanation:

4 0
3 years ago
Una compañía sabe que si produce "x" unidades mensuales su utilidad "u" se podría calcular con la expresión:
belka [17]

Answer:

Δf(u) /Δx  = 92,8    ( razón de cambio promedio)

Step-by-step explanation:

La expresión de la utilidad de la empresa u(x) en función de la cantidad de unidades producidas "x" es:

u(x) = 0,04*x² + 44*x  -4000

Entonces la razón de cambio promedio en un intervalo (a ; b)  en este caso ( 620 ;  600 ) viene dada por la expresión:

Δf(x)/ Δx  =  [ f(b)  -  f(a) ]/( b - a )

en donde  f(b)  y f(a) se obtienen por sustitución de los valores a y b es decir  600 y 620 respectivamente en la función f(x) = u(x) entonces

Δf(u) /Δx  =  [ u(b)  -  u(a) ]/( b -a )        (1)

u(b) =  0,04*(620)² + 44*(620) - 4000

u(b) = 15376 + 27280 -4000

u(b) = 2656 unidades

u(a)  = 0,04* (600)²  +  44* 600  - 4000

u(a)  = 14400  +  26400  - 4000

u(a) = 800

Sustituyendo esos valores en la ecuación 1

Δf(u) /Δx  =  2656 - 800 / 620 - 600

Δf(u) /Δx  = 92,8

5 0
3 years ago
0.39/0.75 as a decimal​
MissTica

Answer:

0.52

Step-by-step explanation:

Divide.

5 0
4 years ago
Read 2 more answers
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