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Maslowich
3 years ago
7

Evaluate the polynomial 6x - y for x = 3 and y =4

Mathematics
1 answer:
Mashcka [7]3 years ago
8 0
6 x 3 is 18.  y is equal to 4.  18 minus 4 is 14.  The answer is 14.
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dedylja [7]
I did where you subtract 4 from both sides then divide 2 from 4 and you get 0.5 as x for your answer but im not sure
6 0
2 years ago
8 5x=-2 whats the value of the variable?
wlad13 [49]
In order to get the value of x you have to set x by itself subtract from both sides because the only way to get rid of a positve its with a negative now you have 5x=6, now divide 5 from both sides because the only way to get rid of a multiplication is with a division, this will give you the final answer of x=6/5

Hope this helps
8 0
3 years ago
Radioactive Waste The rate at which radioactive waste is entering the atmosphere at time t is decreasing and is given by Pe^-kt,
Dmitry_Shevchenko [17]

Answer:

\displaystyle{\int^{\infty}_0 {50e^{-0.04t}}\, dt}=1250

Step-by-step explanation:

Given:

T =\displaystyle{\int^{\infty}_0 {Pe^{-kt}} \, dt}

where,

T = total amount of waste

P = 50, the initial rate

k = 0.04

t = time

T =\displaystyle{\int^{\infty}_0 {50e^{-0.04t}} \, dt}

now we need to solve this integral!

T =\displaystyle{50\int^{\infty}_0 {e^{-0.04t}} \, dt}

T = \left|50\left(\dfrac{e^{-0.04t}}{-0.04}\right)\right|^{\infty}_0

T = \left|-1250e^{-0.04t}\right|^{\infty}_0

T = (-1250e^{-0.04(\infty)})-(-1250e^{-0.04(0)})

when any number has a power of negative infinity it is 0. because: a^-{\infty} = \dfrac{1}{a^{\infty}} = \dfrac{1}{\infty} = 0, like something being divided by a very large number!

T = (-1250(0))-(-1250e^0)

T = 1250

this is the total amount of waste

6 0
3 years ago
| -5 | x | 8/2 | + | 3 |​<br><br>Solve
Bas_tet [7]

HOPE THIS HELPS!! PLEASE MARK BRAINLIEST

5 0
3 years ago
Read 2 more answers
A student solved this problem and said the answer is about 7 quarts. Eddie has paint left over from a project. He has 2 fraction
kati45 [8]
The anwser would be C. trust me i just took this test

5 0
3 years ago
Read 2 more answers
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