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2 years ago

Pls answer asap, show work pls :(

Mathematics

1 answer:

coldgirl [10]2 years ago

6 0

Answer:

2.Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form: ( 3 , 5 )

Equation Form: x = 3 , y = 5

3.Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form: ( 2 , 8 )

4.Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form: ( 2 , − 3 )

Step-by-step explanation:

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Hey! i’ll give brainliest pls help.

babunello [35]

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2 years ago

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Element X decays radioactively with a half life of 13 minutes. If there are 530 grams of Element X, how long, to the nearest ten

Leona [35]

Answer:

$t \approx 50.4\,min$

Step-by-step explanation:

The time constant of the element X is:

$\tau = \frac{13\,min}{\ln 2}$

$\tau = 18.755\,min$

The decay function has the following form:

$\frac{m}{m_{o}} = e^{-\frac{t}{\tau} }$

$t = -\tau \cdot \ln \frac{m}{m_{o}}$

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2 years ago

Which of the factors of 120 are composite numbers?

Pani-rosa [81]

Answer:

Find a common prime factor in each of these pairs of numbers

a.21 and 411

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2 years ago

Solve the system be either substitution or elimination 3x-5y=21 and 2x+y=1

IRISSAK [1]

Answer:

(2,-3)

Step-by-step explanation:

I used substitution and rearranged the second equation to y=-2x+1. Then I replaced the y in the first equation with -2x+1. So, I got 3x-5(-2x+1)=21. When you solve that you get 13x=26 or x=2. Then you replace x with 2 in either equation and end up with y=-3.

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3 years ago

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Victor Malaba has a net income of 1,240 per month.if he spends 150 on food 244 on car payment 300 On rent and 50 on savings what

Ivenika [448]

I think it would be 40% but i am not fursher i took 150 244 300 and 50 added them and subtracted them from 1240 and that gave me 496 496 % of 1240 is 40%

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2 years ago