All categories

4 years ago

Can someone help me i'm having trouble with this

Mathematics

1 answer:

hjlf4 years ago

8 0

Answer: it should be <u><em>D</em></u> i hope this helped (if it did let me know)

You might be interested in

Encuentre el angulo positivo y que es coterminal con -270

GalinKa [24]

Ok so ummmm idk how to speck in that but well ummmmm idk

6 0

3 years ago

A pizza chef begins to spin a constant volume of dough to make a pie by spinning and tossing the dough into the air, such that t

Alexxandr [17]

Answer:

a ) dAt/dt = 50,24 in/min

dh/dt = - 0,125 in/min

Step-by-step explanation:

The area of the top is At :

At = π*r²

a) Tacking derivatives with respect to time:

dAt/dt = 2* π*r * dr/dt

At t = t₁ r = 16 in and dr/dt = 0,5

Then

dAt/dt = 2*3,14*16*0,5 in/min

a ) dAt/dt = 50,24 in/min

b) The volume of the cylinder is:

Vc = π*r²*h ( where h is the heigh of the cylinder )

Tacking derivatives with respect to time

dVc/dt = 2* π*r*h*dr/dt + π*r²*dh/dt

But dVc/dt = 0 since the volume remains constant, then:

π*r²*dh/dt = - 2* π*r*h*dr/dt

r*dh/dt = - 2*h*dr/dt

dh/dt = - 2*0,5*2/16 in/min

dh/dt = - 0,125 in/min

4 0

3 years ago

The scatter plot shows the time spent watching TV, x, and the time spent doing homework, y, by each of 23 students last week.

malfutka [58]

Answer:

$(a)\ y = -0.75x + 26$

$(b)\ y = 14.75$

Step-by-step explanation:

Given

See attachment for scatter plot

Required

Equation of the line of best fit

Pick any two points on the line

$(x_1,y_1) = (24,8)$

$(x_2,y_2) = (8,20)$

Calculate the slope (m)

$m =\frac{y_2 -y_1}{x_2 -x_1}$

$m =\frac{20-8}{8-24}$

$m =\frac{12}{-16}$

$m =-0.75$

The equation is then calculated using:

$y = m(x - x_1) + y_1$

So, we have:

$y = -0.75(x - 24) + 8$

$y = -0.75x + 18 + 8$

$y = -0.75x + 26$

Solving (b): y, when $x = 15$

$y = -0.75x + 26$ becomes

$y = -0.75*15 + 26$

$y = -11.25 + 26$

$y = 14.75$

5 0

3 years ago

What is the area of this figura?

Art [367]

Answer:

total area of the figure is: 1568 yd^2

Step-by-step explanation:

The area of the figure is the addition of the areas of a square and a rectangle:

The square on top that measures 28 yd times 28 yd, therefore its area is:

28^2 yd^2 = 784 yd^2

The rectangle at the bottom measures: 56 yd times 14 yd, therefore its area is:

Area rectangle = base x height = 56 yd x 14 yd = 784 yd^2

Then, the total area is the addition of these two:

Area of square + area of rectangle = 784 yd^2 + 784 yd^2 = 1568 yd^2

8 0

3 years ago

Which are sums of perfect cubes? Check all that apply.

tigry1 [53]

answer

a b d e

hope that helped :)

4 0

3 years ago

Read 2 more answers