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3 years ago

3x + 23y =-4 5x = 20

Mathematics

1 answer:

PolarNik [594]3 years ago

6 0

20!!!!!!!!!!!!!!!!!!!!!!!!!

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Closed circle and going to the right, so it is greater than or equal to -2.

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Read 2 more answers

please help. answer is 62.1m(squared) and the objects are composite! please show the work, no matter what i do i cant seem to ge

yuradex [85]

Answer:

$SA=62.1\ m^2$

Step-by-step explanation:

step 1

Find the surface area of the smaller rectangular prism

$SA=2B+Ph$

where

B is the area of the base

P is the perimeter of the base

h is the height of the prism

$SA=2[(2.5)(1.5)]+2(2.5+1.5)(1.5)$

$SA=7.5+12=19.5\ m^2$

step 2

Find the surface area of the cube

$SA=6s^2$

where

s is the length side of the cube

$SA=6(2.5^2)=37.5\ m^2$

step 3

Find the lateral area of the cylinder

$LA=\pi DL$

where

D is the diameter of the base

L is the length of cylinder

$LA=(3.14)(0.5)(3.5)=5.495\ m^2$

step 4

Find the area of the base of cylinder

$A=\pi r^{2}$

we have

$r=0.5/2=0.25\ m$ ----> the radius is half the diameter

$A=(3.14)(0.25)^{2}=0.19625\ m^2$

step 5

Find the surface are of the composite figure

we know that

The surface area of the composite figure is equal to the surface area of the smaller rectangular prism plus the lateral area of the cylinder, plus the surface area of the cube, minus the area of the two bases of cylinder

$SA=19.5+5.495+37.5-2(0.19625)=62.1\ m^2$

5 0

3 years ago

Hey I need help with this one question I don’t understand it

Eddi Din [679]

Answer:

y= -x-6

Step-by-step explanation:

slope intercept is as follows

y=mx+b

where m is the slope and b is the y intercept (where the line crosses the y axis)

We can see that the x intercept is -6 which means our equation so far is y=mx-6 and so we just need the slope

To find the slope I will use the slope formula

To use the slope formula you will need two points on the graph. I am going to pick the y intercept and the point next to it

Which means our two points are

(0,-6) and (1,-7)

The slope formula is as follows

(y₂-y₁)/(x₂-x₁)

Plug in our values and get

(-7-(-6)/(1-0)

-1/1

-1 is our slope

which means our final equation is

-x-6

3 0

3 years ago