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grandymaker [24]
3 years ago
15

Carmen made $247 for 13 hours of work.

Mathematics
1 answer:
Scrat [10]3 years ago
4 0

Answer:

9 hours

Step-by-step explanation:

$247/13hours=$19 per hour

$171/$19=9 hours

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Solve using elimination. -2x + y = 1 -6x - y = -9<br> HELP
laiz [17]

Answer:

(x,y) = (8,7)

Step-by-step explanation:

Solve equation [2] for the variable  x

 [2]    x = y + 15

Plug this in for variable  x  in equation [1]

[1]    (y +15) + y = 1

[1]    2y = -14

Solve equation [1] for the variable  y

[1]    2y = - 14

[1]    y = - 7  By now we know this much :

x = y+15

y = -7

// Use the  y  value to solve for  x

x = (-7)+15 = 8

Solution :

{x,y} = {8,-7}

5 0
3 years ago
A coca cola costs 150 yen. You buyed 30 bottles of cola and sold them at the price of 155 yen each. Find profit %​
bazaltina [42]
<h3><u>Question:</u><u>-</u></h3>

A coca cola costs 150 yen. You buyed 30 bottles of cola and sold them at the price of 155 yen each. Find profit %

<h3><u>Answer</u><u>:</u><u>-</u></h3>

3.33%

<h3><u>Explanation</u><u>:</u><u>-</u></h3>

Cost price = ¥150

Selling price = ¥155

Total profit = Selling price - Cost price

→ = ¥155 - ¥150

→ = ¥5

Profit % = Profit × 100/cost price

️ = 5 × 100/150

️ = 10/3 = 3.33%

7 0
2 years ago
D. Lauren and Gina's mother told her daughters they can
goblinko [34]

Answer:

4 minutes left

Step-by-step explanation:

20 - 16 = 4

4 0
2 years ago
Read 2 more answers
A model for tumor growth is given by the Gompertz equation dV dt = a (In b-, In V) V where a &gt;0 and b &gt;0 are constants and
Xelga [282]

Answer:

V(t) = b^{(1-e^{-at})}

Step-by-step explanation:

We are given the following information in the question:

\displaystyle\frac{dV}{dt} = a (In b - In V) V

where a > 0 and b > 0.

\displaystyle\frac{dV}{dt} = a (In b-In V) V\\\\\displaystyle\frac{dV}{dt} = -aV(ln\frac{V}{b})\\\\\frac{dV}{V(ln\frac{V}{b})} = (-a)dt\\\\\text{Put } ln\frac{V}{b} = z\\\\\text{Integrating both sides}\\\\\int \frac{dV}{V(ln\frac{V}{b})} = \int (-a)dt\\\\\text{We get}\\\\\int \frac{dz}{z} = \int (-a)dt\\\\\\\text{where C is the constant of integration}

V(0) = 1~ mm^3\\V(t) = b.e^{e^{-at+C}}\\\text{Putting t =0, V(0) = 1}\\\\V(0) = 1 = b.e^{e^{C}}\\\\V(t) = b^{(1-e^{-at})}

where v(t) is the required tumor volume as a function of time that has an initial tumor volume of V(0) = 1 cubic mm.

5 0
3 years ago
Figure GHTA below is a parallelogram. = 6 cm, = 8 cm, and the measure of = 60°. Find the area.
Kruka [31]

Answer:

multiply

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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