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Artyom0805 [142]
2 years ago
8

Solve 4x-y=-5 -2x+3y=10​

Mathematics
2 answers:
jok3333 [9.3K]2 years ago
4 0
(x,y) = (9/2,8) thats the answer
allsm [11]2 years ago
3 0

Answer:

(x,y) =(7/2,4)

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How are percent transmittance and absorbance related algebraically?
statuscvo [17]

Answer:

So, if all the light passes through a solution without any absorption, then absorbance is zero, and percent transmittance is 100%. If all the light is absorbed, then percent transmittance is zero, and absorption is infinite.

Absorbance is the inverse of transmittance so,

A = 1/T

Beer's law (sometimes called the Beer-Lambert law) states that the absorbance is proportional to the path length, b, through the sample and the concentration of the absorbing species, c:  


A ∝ b · c

As Transmittance, T =\dfrac{P}{P_0}

% Transmittance, \%T=100\times T

Absorbance,

A=\log_{10} \dfrac{P_0}{P}\\\\A =\log_{10}\times \dfrac{1}{T}\\\\A=\dfrac{\log_{10} 100}{\%T}\\\\A=(2 - log_{10})\times \%T

Hence, A=\log_{10}\times \dfrac{1}{T} is the algebraic relation between absorbance and transmittance.


8 0
2 years ago
PLS HELP! ASAP!
Oduvanchick [21]

Answer:

i only know (d)

was -i s now

1.8 m - 0.6 m

1.2 m - 0.4 m

2.4 m - 0.8 m

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
A shop has determined that the number of bottles of water they sell on a summer day is a function of the day’s high temperature,
Alik [6]

Answer:

  •          T=t+94

                 Where T is the hight temperature and t is the day

Explanation:

The table shows that every day the<em> High temperature, T (degrees F) </em>increases 1 unit.

Then, this is a linear function with slope = 1ºF / day.

You can use the point-slope equation to determine the <em>function of the high temperature:</em>

  • Point-slope equation:

       y-y_1=m(x-x_1)

  • Choose any point from the table and m = 1. I will use the first point (1,95)

  • m = 1
  • x₁ = 1
  • y₁ = 95

Substitute:

        y-95=1(x-1)\\\\y=x-1+95\\\\y=x+94

Make the variables  y = T, and x = t:

     T=t+94

4 0
3 years ago
Anyone know the answer?
ANTONII [103]
PKE is a triangle and its interior angles therefor sum to 180deg:

P+K+E=180
90+(x+6)+2x=180
96+3x=180
3x=84
x=\frac{84}{3}=28deg
5 0
3 years ago
Factors = _______ and ______
Murrr4er [49]

Answer:

-7 & 5

Step-by-step explanation:

7 0
2 years ago
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