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SSSSS [86.1K]
2 years ago
14

Help please y + 4- 6(x +7)

Mathematics
1 answer:
Reptile [31]2 years ago
6 0

Answer: y  - 6x +46

Step-by-step explanation:

y + 4- <u>6(x +7)</u>

y + <u>4</u> - 6x +<u>42</u>

y  - 6x +46

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the fare for a taxi cab is a $2 flat fee plus additional $1.50 for each mile. which equation represent the total cab fee in doll
inna [77]
1.50x +2=y  Where x is how many miles and y is the total 
5 0
3 years ago
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A taco stand sells tacos for $3.25 each. The stands expenses for the day are $210. Define your variables and write an inequality
Julli [10]
Given:

Let P= profit
let n= no. of tacos sold per day

Sol'n:

P= 3.25n-210
the profit needs to be positive, thus

3.25n>210

n>210/3.25

n> 64.615

they can only sell whole tacos, therefore they must sell at least 65 tacos to make a profit and that profit is:

P=3.25n-210

P=3.25*65 - 210

P= 211.25 -210

P= 1.25

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3 0
3 years ago
❤️❤️help please ASAP
Archy [21]
From what i see, i guess the answer may be B. it looks like it, but i dont really know.
6 0
3 years ago
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Find all points on the portion of the plane x+y+z=5 in the first octant at which f(x, y, z) = xy2z2 has a maximum value.
irina1246 [14]
Lagrange multipliers:

L(x,y,z,\lambda)=xy^2z^2+\lambda(x+y+z-5)

L_x=y^2z^2+\lambda=0
L_y=2xyz^2+\lambda=0
L_z=2xy^2z+\lambda=0
L_\lambda=x+y+z-5=0

\lambda=-y^2z^2=-2xyz^2=-2xy^2z

-y^2z^2=-2xyz^2\implies y=2x (if y,z\neq0)

-y^2z^2=-2xy^2z\implies z=2x (if y,z\neq0)

-2xyz^2=-2xy^2z\implies z=y (if x,y,z\neq0)

In the first octant, we assume x,y,z>0, so we can ignore the caveats above. Now,

x+y+z=5\iff x+2x+2x=5x=5\implies x=1\implies y=z=2

so that the only critical point in the region of interest is (1, 2, 2), for which we get a maximum value of f(1,2,2)=16.

We also need to check the boundary of the region, i.e. the intersection of x+y+z=5 with the three coordinate axes. But in each case, we would end up setting at least one of the variables to 0, which would force f(x,y,z)=0, so the point we found is the only extremum.
4 0
3 years ago
HELP ME PLZZ I NEED HELP WITH THIS!!
VARVARA [1.3K]

Answer:

a

Step-by-step explanation:

7 0
3 years ago
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