What is the solution of the inequality -0.4× -1.2> 0.8

Answers

Answer 1

Answer:

x<-5

If I read the question correctly and x stands for a variable, and not multiplication, you can multiply each value by 10 to get whole numbers (or not, but whole numbers are easier to work with, and you get the same answer either way, I checked). This gives you

-4x -12>8

First you want to isolate x by adding 12 to both sides and getting. -4x>20. Then you divide both sides by -4, but when doing so, remember that when you divide by a negative number, you need to flip the sign. So then your answer is x<-5.

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Answers

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Which equation represents the volume of a cone with the same base and height as the cylinder below?

Answers

Answer:

Volume of cone $V=(\pi.t^(2).k)/(3)$

Step-by-step explanation:

Since cone is having same base and height that means base of the cone is circular with radius t and height of the cone is k same of cylinder shown.

Now volume of a cone V = $(1)/(2)\pi .r^(2).h$

Since r = radius of the base of cone

h = height of the cone

Now we put the values of height and radius in the formula

$V=(\pi.t^(2).k)/(3)$

So the equation that represents the volume of cone is V = $(\pi.t^(2).k)/(3)$

check the picture below.

Question in the file below. (Khan Academy)

Answers

We can suggest this equation.
(6x+x)+(6x+x)+110º+110º=360º
7x+7x+220º=360º
14x=360º-220º
14x=140º
x=140º/14
x=10º

Answer. x=10º

Work is attached. :D

A developer has 7 1/2 acres of land to build houses on. If each house is to be built on 1/4-acre plot, how many houses can he build?A.3
B.5
C.30
D.35

Answers

Amount of land that the developer has to build house on = 7 1/2 acres
   = 15/2 acres
Amount of land required for building each house = 1/4 acre
Then
The total number of
houses that can be built by the developer = (15/2)/(1/4)
   = (15 * 4)/(2 * 1)
   = 15 * 2
   = 30
So the developer can make a total of 30 house with the quantity of land he has. The correct option among all the options given in the question is option "C".

The developer will build 30 total number of houses when the total area is $7 (1)/(2)$ acres.