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Scrat [10]
3 years ago
14

HELP!!! MARKING BRAINLIEST

Mathematics
2 answers:
Ilya [14]3 years ago
4 0

Answer:

Not trying to take points but it is too blurry I can’t  see it

Step-by-step explanation:

ella [17]3 years ago
3 0
First, for 3^4, you multiply the number 3 by itself 4 times, so that would be 81. now, let’s figure out what 8 x 7 is. 8 x 7 is 56. now, subtract 56 from 81. your answer is 25! hope this helped!
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Factor –7x3 + 21x2 + 3x – 9 by grouping. What is the resulting expression?
spin [16.1K]

Answer:

The answer is the third option

3 0
3 years ago
Read 2 more answers
Four friends bought an extra-large $12 popcorn. Each person bought their own drink. The total cost of the food can be represente
Sav [38]

Answer:

True

Step-by-step explanation:

This equation correctly represents the total cost of the food that the friends ended up paying for the popcorn and sodas. In this expression, the cost of each individual soda is represented by the variable x which is multiplied by 4 since each one of the four friend's purchased their own soda. After making this multiplication process that product is added to the initial $12 that they all spent together on the popcorn.

4 0
3 years ago
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
3 years ago
The coordinates of the image of line segment RT are R'(-2,-4) and T'(4.4). The image was produced by a dilation with a scale fac
Daniel [21]

Given the coordinates of the image of line segment RT to be R'(-2,-4) and T'(4.4), if the image produced was dilated by a scale factor of 12 centered at the origin, to get the coordinate of the end point, we will simply multiply the x and y coordinates of by the factor of 12 as shown:

For R' with coordinate R'(-2,-4), the coordinates of endpoint of the pre-image will be:

R = 12R'

R = 12(-2, -4)

R = (-24, -48)

For T' with coordinate T'(4,4), the coordinates of endpoint of the pre-imagee will be:

T = 12T'

T = 12(4, 4)

T = (48, 48)

Hence the coordinate of the endpoint of the preimage will be at R(-24, -48) and T(48, 48)

6 0
1 year ago
M × m × r = 5 × 4 × 5; then r =​
Shtirlitz [24]

Answer: 5

Step-by-step explanation:

6 0
3 years ago
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