2 years ago

I need help with one question. anyone pls?

Mathematics

2 answers:

denpristay [2]2 years ago

7 0

Answer:

(-3,4)......... multiply the first equation by the coefficient of y i.e 3 (of 2nd equation)...

again multipy the 2nd eq by the coefficient of y i.e 2 (of 1st eq)

and finally solve the eq 3 and 4 ...(solve the both eq formed by multiplying)

oksano4ka [1.4K]2 years ago

4 0

Answer:

(-3,4)

Step-by-step explanation:

x + 2y = 5

-3 + (2*4) = 5

-3 + 8 = 5

5 = 5

2x + 3y = 6

(2*-3) + (3*4)=6

-6 + 12 = 6

6 = 6

You might be interested in

An 18 fluid ounces bottle of lotion costs $10.99, what is the prices per fluid ounce?

anzhelika [568]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

As a reward Leo will get an additional 25% added to his regular allowance. If the reward is $5.00, what is his regular allowance

I am Lyosha [343]

#1: $6.25
5.00 + 25%

#2: $3.75
5.00 - 25%

8 0

2 years ago

Eli had $10, but he lost some of it. His mom doubled the money he had left. Eli wrote the expression 2(10 – k) to show how much

Juli2301 [7.4K]

Answer:

Equation 1

In the story it said Eli's mom doubled the money he left, that is what the two represents. 10 is the original amount he had. -k is the money he lost.

Equation 2

20 is the the result of the original 10 being multiplied. -2k, now the 2 is still the amount that the mom doubled his amount by, and the k is how much money Eli lost.

Hope this helps!!

8 0

3 years ago

Read 2 more answers

Pls helps me ill give u brainlest !!!<br> Solve the following equation for x.

BARSIC [14]

Answer: C.

Step-by-step explanation: I used m.athway

4 0

2 years ago

Read 2 more answers

The rate of change of the volume of a snowball that is melting is proportional to the surface area of the snowball. Suppose the

Alisiya [41]

Answer:

According to the passage, we have the next equation:

$\frac{dV}{dt} = \frac{4}{3}\pi*3*r^{2}*\frac{dr}{dt} = K*(4\pi*r^{2} )$

where "K" is a proportional constant

Leaving at the end with the next equation:

$\frac{dr}{dt} = K$

Integrating the equation, we have:

$r=K*t+C$

where "C" is a constant

Then, we have the 2 conditions for the problem:

1) t=0 → r=10

Replacing in the equation, we have C = 10

2) t=5 → r=8

Replacing in the equation, we have K = -0.4

Finally, the time which the snowball will be completely melted will be when r = 0. So replacing in the equation

$0=-0.4*t+10$

t = 25 minutes

6 0

3 years ago