Please help!! WILL GIVE BRAINLIEST

2x 26 Please I need help I am failing math !!

almond37 [142]

Answer:

2*26=52

Step-by-step explanation: you can just use a calculator to find 2*26 and you will find that the answer to your question is 52.

3 0

4 years ago

Read 2 more answers

The shaded region R in diagram below is enclosed by y-axis, y = x^2 - 1 and y = 3.

Lostsunrise [7]

Cross sections of the volume are washers or annuli with outer radii x(y) + 1, where

y = x(y) ² - 1 ==> x(y) = √(y + 1)

and inner radii 1. The distance between the outermost edge of each shell to the axis of revolution is then 1 + √(y + 1), and the distance between the innermost edge of R on the y-axis to the axis of revolution is 1.

For each value of y in the interval [-1, 3], the corresponding cross section has an area of

π (1 + √(y + 1))² - π (1)² = π (2√(y + 1) + y + 1)

Then the volume of the solid is the integral of this area over [-1, 3]:

$\displaystyle\int_{-1}^3\pi y\,\mathrm dy = \frac{\pi y^2}2\bigg|_{-1}^3 = \boxed{4\pi}$

$\displaystyle\int_{-1}^3 \pi\left(2\sqrt{y+1}+y+1\right)\,\mathrm dy = \pi\left(\frac43(y+1)^{3/2}+\frac{y^2}2+y\right)\bigg|_{-1}^3 = \boxed{\frac{56\pi}3}$

8 0

3 years ago

What is an equivalent form of the function f(x) = x^2 +8x+15 that reveals the zeros of the function? A. y= (x-3)^2-5 B. f(x) = (

777dan777 [17]

ANSWER

C. f(x) = (x+3)(x+5)

EXPLANATION

The given function is

$f(x) = x^2 +8x+15$

The factored form of the function reveals the zeros of the function.

From the factored form, we apply the zero product principle to get the zeros.

From the given options, the factored form of the polynomial is

$f(x) = (x+3)(x+5)$

8 0

3 years ago

Please help. I don't want to fail! If edge of a cube is doubled then its surface area becomes ____ times and the volume becomes

ArbitrLikvidat [17]

If the edge of the cube is doubled then its surface area of the cube becomes 4 times and the volume becomes 8 times

6 0

3 years ago

Should i use dy\dx (normal differentiation) or d²y\dx² (differentiation of the differentiation)?

11111nata11111 [884]

Use both!

You want to minimize P, so differentiate P with respect to x and set the derivative equal to 0 and solve for any critical points.

P = 8/x + 2x

dP/dx = -8/x² + 2 = 0

8/x² = 2

x² = 8/2 = 4

x = ± √4 = ± 2

You can then use the second derivative to determine the concavity of P, and its sign at a given critical point decides whether it is a minimum or a maximum.

We have

d²P/dx² = 16/x³

When x = -2, the second derivative is negative, which means there's a relative maximum here.

When x = 2, the second derivative is positive, which means there's a relative minimum here.

So, P has a relative maximum value of 8/(-2) + 2(-2) = -8 when x = -2.

7 0

3 years ago