All categories

3 years ago

(-11x2 + 6) - (-14x2 + 2)

Mathematics

2 answers:

velikii [3]3 years ago

7 0

Answer:

Step-by-step explanation:

-11x2=(-22+6)=-16

-14x2=(-28+2)=-26

(-16)-(-26)

-16+26=10

Marina CMI [18]3 years ago

4 0

(-22 + 6) - (- 28 + 2)
(-16) - (-26)
-16 + 26
answer is 10.

You might be interested in

The graph of x2+y2=9 is shown on the grid

Angelina_Jolie [31]

Answer:

no solutions found

Step-by-step explanation:

$x2+y2=9 - - - - - (1)\\ x+y=2 - - - - - - (2) \\ from \: equation \: (2) \\ y = 2 - x \\ substitute \: into \: equation \: (1) \\ x {}^{2} + 2 {}^{2} - x {}^{2} = 9 \\$

Step by Step Solution

More Icon

the equation by subtracting what is to the right of the equal sign from both sides of the equation :

x^2+2^2-x^2-(9)=0

STEP

Equation at the end of step

(((x2) + 22) - x2) - 9 = 0

STEP

Equation at the end of step 2

-5 = 0

STEP

Equations which are never true:

3.1 Solve : -5 = 0

This equation has no solution.

A a non-zero constant never equals zero.

no solutions found

5 0

3 years ago

Which of the following segments is a radius of 0?

erastovalidia [21]

Not sure i remember this but i think radius is like half of the diameter. it’s a line from the center, to a side of the circle. in this situation, line RO would be representing the radius.

answer: D, line RO
hope this helps :)

8 0

3 years ago

Read 2 more answers

Help me please...........?

Makovka662 [10]

189 inches is 15.75 feet

16 ft - 15.75 ft = 0.25 ft

0.25ft = 3 inches

He must vault 3 inches higher

4 0

3 years ago

The radius of a cone is decreasing at a constant rate of 7 inches per second, and the volume is decreasing at a rate of 948 cubi

inessss [21]

Answer:

The height of cone is decreasing at a rate of 0.085131 inch per second.

Step-by-step explanation:

We are given the following information in the question:

The radius of a cone is decreasing at a constant rate.

$\displaystyle\frac{dr}{dt} = -7\text{ inch per second}$

The volume is decreasing at a constant rate.

$\displaystyle\frac{dV}{dt} = -948\text{ cubic inch per second}$

Instant radius = 99 inch

Instant Volume = 525 cubic inches

We have to find the rate of change of height with respect to time.

Volume of cone =

$V = \displaystyle\frac{1}{3}\pi r^2 h$

Instant volume =

$525 = \displaystyle\frac{1}{3}\pi r^2h = \frac{1}{3}\pi (99)^2h\\\\\text{Instant heigth} = h = \frac{525\times 3}{\pi(99)^2}$

Differentiating with respect to t,

$\displaystyle\frac{dV}{dt} = \frac{1}{3}\pi \bigg(2r\frac{dr}{dt}h + r^2\frac{dh}{dt}\bigg)$

Putting all the values, we get,

$\displaystyle\frac{dV}{dt} = \frac{1}{3}\pi \bigg(2r\frac{dr}{dt}h + r^2\frac{dh}{dt}\bigg)\\\\-948 = \frac{1}{3}\pi\bigg(2(99)(-7)(\frac{525\times 3}{\pi(99)^2}) + (99)(99)\frac{dh}{dt}\bigg)\\\\\frac{-948\times 3}{\pi} + \frac{2\times 7\times 525\times 3}{99\times \pi} = (99)^2\frac{dh}{dt}\\\\\frac{1}{(99)^2}\bigg(\frac{-948\times 3}{\pi} + \frac{2\times 7\times 525\times 3}{99\times \pi}\bigg) = \frac{dh}{dt}\\\\\frac{dh}{dt} = -0.085131$

Thus, the height of cone is decreasing at a rate of 0.085131 inch per second.

3 0

3 years ago

What is the length of stack J M with bar on top space in the rectangular prism? Round your answer to the nearest tenth.

musickatia [10]

Volume of the rectangular prism = l * w * h
Diagonal = √l² + w² + h²
= √ 16² + 12² + 8²
= √464
= 21.5

8 0

3 years ago