All categories

3 years ago

THIS IS CHALLENGING. THIS WILL DEFINITELY PROVE THAT YOU ARE SMART!!

Mathematics

2 answers:

Greeley [361]3 years ago

5 0

y = 2x + 13

Positive value:

2x + 13 > 0

2x > -13

x > -6.5

Negative value

2x + 13 < 0

2x < -13

x < -6.5

pogonyaev3 years ago

4 0

y=2x+13

y>0 would be a positive value

2x+13>0

subtract 13 from each side

2x >-13

divide by 2

x > -13/2

x > -6 1/2

y < 0 is a negative value

2x+13 < 0

2x<-13

x < -13/2

x < -6 1/2

if x > -6 1/2 it has a positive value

if x< -6 1/2 it has a negative value

x= -6 1/2 it equals 0

You might be interested in

Solve The Quadratic Equation by the Square Root Method.<br><br> (x - 2)^2-1=0

agasfer [191]

Download Cymath to get the answer

6 0

3 years ago

ABCD is a parallelogram. Find the value of x, y and z.

expeople1 [14]

Step-by-step explanation:

X+100=180(linear pair)

X=180-100

X=80

30+y+x=180(sum of angle of triangle)

Y=180-110

Y=70

6 0

3 years ago

Read 2 more answers

A come and a pyramid has equal heights and volumes.if the base area of the pyramid is 154cm2.find the radius of the cone.

Dmitry_Shevchenko [17]

Answer:

Radius = 8.575 cm

Step-by-step explanation:

Formula for volume of a pyramid is;

V_p = ½Ah

Where A is area of base and h is height

Also, formula for volume of cone is given as;

V_c = ⅓πr²h

Now, we are told that V_p = V_c and that h is the same for both shapes.

Thus ;

½Ah = ⅓πr²h

h will cancel out to give;

½A = ⅓πr²

Cross multiply to give;

3A/2π = r²

Base area of pyramid is given as 154 cm². Thus;

(3 × 154)/2π = r²

r = √((3 × 154)/2π

r = 8.575 cm

4 0

3 years ago

Please help having trouble!

zmey [24]

Answer:

Option C is the correct choice that is $y$

Step-by-step explanation:

As this is a multiple choice question we will reduce the options and work on it with the given points $(0,-2),(-2,-3)$

Note:We know that $\leq ,\geq$ where there is $=$ sign associated with it have a straight line graph there is no breaking in the line.

And when there is simply we have a dashed line when we plot it on a graph.

So option B and D are discarded.

Now one-by one we will put the values $(x,y)\ (-2,3)$ to know which equation it satisfies.

If we put $y=3$ then $x=-2$ .

So working with option A.

$y$

Plugging the values.

$3$

And we know that $x$ must be equal to $-2$ so this is not the right answer.

We are left with only one choice that is C .

So option C is the correct option of the above inequality.

7 0

3 years ago

10x + 4y < 12<br> 8x - 3y > 20

balandron [24]

Answer:

I've attached a pic how the graph will look like

Answered by GAUTHMATH

3 0

3 years ago