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MArishka [77]
4 years ago
5

Simplify expression: 3(4x-5) + 4(2x+6)

Mathematics
2 answers:
kotegsom [21]4 years ago
7 0


First we multiply

12x - 15 + 8x + 24

Next we combine like terms

20x + 9
SVEN [57.7K]4 years ago
6 0
3(4x-5)+4(2x+6)

Distribute.

12x-15+8x+24

12x+8x= 20x

24-15= 9

20x+9 <---- simplified expression

I hope this helps!
~kaikers
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On a town map, each unit of the coordinate plane represents 1 mile. Three branches of a bank are located at A(−3, 1), B(1, 3), a
WARRIOR [948]
From A to B...
distance formula : sqrt ((x2 - x1)^2 + (y2 - y1)^2
(-3,1)....x1 = -3 and y1 = 1
(1,3)....x2 = 1 and y2 = 3
sub
d = sqrt ((1 - (-3)^2 + (3 - 1)^2
d = sqrt ((1 + 3)^2 + 2^2
d = sqrt (4^2 + 2^2)
d = sqrt (16 + 4)
d = sqrt 20
d = 4.47 miles...so from A to B, it was 4.47 miles

from B to C
d = sqrt ((x2 - x1)^2 + (y2 - y1)^2
(1,3)....x1 = 1 and y1 = 3
(5,-1)...x2 = 5 and y2 = 1
sub
d = sqrt ((5 - 1)^2 + (-1 - 3)^2
d = sqrt ((4^2 + (-4^2)
d = sqrt (16 + 16)
d = sqrt 32
d = 5.66......but keep in mind, he only drove half-way...so 5.66/2 = 2.83 miles

for a total of : 4.47 + 2.83 = 7.3 miles <===
4 0
3 years ago
Simplify 8(R + 6) - 2R
navik [9.2K]
<span>8(R + 6) - 2R, 8R + 48 - 2R, The result is 6R + 48</span>
3 0
3 years ago
The rate at which a quantity of a radioactive substance decays is proportional to the quantity of the substance. The constant of
Butoxors [25]

Answer:

\frac{dN}{dt} = λN           N(0) = 6

N(t) = N₀e^(λt)

Applying the inital value condition

N(t) = 6e^(λt)

Step-by-step explanation:

Summarizing  the information briefly and stating the  variables in the problem.

t = time elapsed during the decay

N(t) = the amount of the radioactive substance remaining after time t

λ= The constant of proportionality  is called the decay constant or decay rate

Given the initial conditions

N(0) = N₀ = 6

The rate at which a quantity of a radioactive substance decays (\frac{dN}{dt}) is proportional to the quantity of the substance (N)  and λ is the constant of proportionality  is called the decay constant or decay rate :

\frac{dN}{dt} = λN          

N(t) = N₀e^(λt) ......equ 1

substituting the value of  N₀ = 6 into equation 1

N(t) = 6e^(λt)

3 0
3 years ago
A point is plotted on the number line at 225 . A second point is plotted at −434 .
malfutka [58]

Answer:

7 3/20

Step-by-step explanation:

I took the quiz.

7 0
3 years ago
This is fractions.. I'm having trouble in here im not really smart in math.....
hjlf
The answer is 6 7/8
2 \frac{1}{2}  + 4 \frac{3}{8}  =  \frac{5}{2}  +  \frac{35}{8}  =  \frac{20}{8}  +  \frac{35}{8}   \\ =  \frac{55}{8}  = 6 \frac{7}{8}






good luck
4 0
3 years ago
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