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3 years ago

6

How does the brain get stronger when it takes on challenges?

1 answer:

Sergeu [11.5K]3 years ago

8 0

<h2><em>Hello ! :)</em></h2>

<h3>I found this on google..</h3>

<h2><u>"The nerve cells have branches connecting them to other cells in a complicated network. Communication between these brain cells is what allows us to think and solve problems. When you learn new things, these tiny connections in the brain actually multiply and get stronger."</u></h2>

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What is the value of the x-intercept for the graph of 4x-5y=40?

Crank

I believe its 4/5 because when you isolate y, you have to divide 5 and 4 but you Can just leave it in its decimal form.

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3 years ago

Suppose you invest $2000 at a rate of 3.25% continuously, determine the worth of the investment after 10 years.

AysviL [449]

Answer:

$2650

Step-by-step explanation:

= 2000 × 0.0325 × 10 = 650

= $ 650.00

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3 years ago

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Bas_tet [7]

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3 years ago

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25x^-4-99x^-2-4=0 <br> How do I solve for this?

OlgaM077 [116]

Given

$25x^{-4} - 99x^{-2} - 4 = 0$

consider substituting $y=x^{-2}$ to get a proper quadratic equation,

$25y^2 - 99y - 4 = 0$

Solve for $y$ ; we can factorize to get

$(25y + 1) (y - 4) = 0$

$25y+1 = 0 \text{ or } y - 4 = 0$

$y = -\dfrac1{25} \text{ or }y = 4$

Solve for $x$ :

$x^{-2} = -\dfrac1{25} \text{ or }x^{-2} = 4$

The first equation has no real solution, since $x^{-2} = \frac1{x^2} > 0$ for all non-zero $x$ . Proceeding with the second equation, we get

$x^{-2} = 4 \implies x^2 = \dfrac14 \implies x = \pm\sqrt{\dfrac14} = \boxed{\pm \dfrac12}$

If we want to find all complex solutions, we take $i=\sqrt{-1}$ so that the first equation above would have led us to

$x^{-2} = -\dfrac1{25} \implies x^2 = -25 \implies x = \pm\sqrt{-25} = \pm5i$

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2 years ago

In ΔVWX, the measure of ∠X=90°, VW = 93 feet, and XV = 57 feet. Find the measure of ∠W to the nearest tenth of a degree.

Maksim231197 [3]

Answer:

37.8°

Step-by-step explanation:

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3 years ago

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