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3 years ago

Someone who actually knows what they doing please ‍♀️

Mathematics

2 answers:

Firdavs [7]3 years ago

6 0

Answer:

-2/5

Step-by-step explanation:

$2(4a+1)=3a$

Expand parentheses:

$8a+2=3a \\\\5a=-2 \\\\a=-\dfrac{2}{5}$

Hope this helps!

frozen [14]3 years ago

4 0

Answer:

$a=-\frac{2}{5}$

Step-by-step explanation:

2(4a+1)=3a

8a+2=3a

Subtract 8a from both sides

2= -5a

-5a=2

Divide both sides by 5

-a= $\frac{2}{5}$

Multiply both sides by -1

$a=-\frac{2}{5}$

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Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

A worker is using a particle accelerator. described as -5x+2y=18, where x is time and y is velocity in kilometer per hour. Deter

Darya [45]

Answer:

If x is 24.4 then y will be 70.

Step-by-step explanation:

Add 5x to both sides to isolate y. The equation should be 2y=18+5x

Divide all terms by 2 to get y=9+2.5x

If y is 70, the equation is 70=9+2.5x

Subtract 9 from both sides to get 61=2.5x

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7 0

4 years ago

Find the extreme values of the function f(x, y) = 4x2 + 6y2 on the circle x2 + y2 = 1.

julia-pushkina [17]

Answer with Step-by-step explanation:

We are given that

$f(x,y)=4x^2+6y^2$

Let g(x,y)= $x^2+y^2=1$

We have to find the extreme values of the given function

$\nabla f(x,y)$

$\nabla g(x,y)=$

Using Lagrange multipliers

$\nabla f(x,y)=\lambda \nabla g(x,y)$

$f_x=\lambda g_x$

$8x=\lambda 2x$

Possible value x=0 or $\lambda=4$

If x=0 then substitute the value in g(x,y)

Then, we get $y=\pm 1$

$f_y=\lambda g_y$

$12y=\lambda 2y$

If $\lambda=4$ and substitute in the equation

Then , we get possible value of y=0

When y=0 substitute in g(x,y) then we get

$x=\pm 1$

Hence, function has possible extreme values at points (0,1),(0,-1), (1,0) and (-1,0).

$f(0,1)=6$

$f(0,-1)=6$

$f(1,0)=4$

$f(-1,0)=4$

Therefore, the maximum value of f on the circle $x^2+y^2=1$ is $f(0,\pm1)=6$ and minimum value of $f(\pm1,0)=4$

7 0

3 years ago

If the number of bacteria in a colony doubles every 27 minutes and there is currently a population of 15 bacteria, what will the

borishaifa [10]

60 bacteria population

3 0

4 years ago

ANSWER ASAP!!!!

antiseptic1488 [7]

Y= -x+4
2x+2(-x+4)=8
2x-2x+8=8
8=8

x+y= 4
2x+2y= 8

-2x-2y= -8
2x+2y= 8

0=0
the answer is b inconsistent

5 0

3 years ago