What graph shows piece wise function?

Step-by-step explanation:

P.S - The exact question is -

Given - Priya is simplifying the expression -2(4 - 2x) - 3 - 2x  Her work is shown to the left.  

To find - Priya's work is incorrect.  Explain the error she made.

Proof -

Priya simplified the problem as follows :

-2( 4 - 2x ) - 3 - 2x

-8 - 2x - 3 - 2x

-11 - 4x

But the simplification has to be like

-2( 4 - 2x ) - 3 - 2x

⇒-2(4) - 2(-2x) - 3 - 2x

⇒-8 + 4x - 3 - 2x

⇒-8 - 3 + 4x - 2x

⇒-11 + 2x

So, Priya made an error in the second line.

In the second line it has to be -8 + 4x - 3 - 2x but Priya has written -8 - 2x - 3 - 2x.

Answer:

i have made it in above picture

hope it helps

Answer:

A= 347.65 B= 43.5

Step-by-step explanation:

A : 347.65

B : 43.5

244.5

+ 1 0 1. 1 5

= 347.65

68.2

- 24.7

= 43.5

Answer:

D

Step-by-step explanation:

Answer:

Step-by-step explanation:

so a rhombus is two triangles put together,  the area of a triangle is  1/2 b*h   and since we've got two  it's  2 ( 1/2 b * h )   so then it'  just  b * h

will be the area of the rhombus.    

the base is WY = 24 the height is  1/2 XZ = 30  so  15

24*15 = 360

Answer:

Explanation:

single cone = $3

double cone = $5

total single = A = 3s

total double = B = 5d

As + Bd = 57

Cs + Ed = 15

A = 3 , B = 5

3s + 5d = 57

s + d = 15    (we don't know C and E yet)

multiply the second equation by 3 and substract it from the first equation

3s + 5d - 3s - 3d = 57 - 45

2d = 12

d = 6

Ed = 6

Cs = 15 - 6 = 9

A = 3 ($3)

B = 5 ($5)

C = 9 (single cones)

E = 6 (double cones)

Check:

(9 single cones × $3) + (6 double cones × $5) = 27 + 30 = 57

9 single cones + 6 double cones = 15

the sum of A, B, C and E:

A+B+C+E = 3+5+9+6 = 23

Answer:

B. 5/2

Step-by-step explanation:

Answer:

linear equations

Step-by-step explanation:

linear inequalities

Answer:

natural numbers.ok

hope this helps you ☺️☺️

Answer:

3.7 x 10^-5

Step-by-step explanation:

x²+2x-15=(x+5)(x-3) there is nothing to factoriz

Answer:

x=16/t

t=4 so

16/4 = 4

4 is your answer.

Answer:

1/10

Step-by-step explanation:

im not sure i think its 14.2

Answer:

a) 9/10 or 90%

b)2/3 or 67%

Answer

x=3 or (3,0) and if you need it y=-2x+3

Step-by-step explanation:

I'm not very good at explaining things, sorry

Answer:

D. The distribution of differences between each individual student’s times on each of the two tests (time with rap – time with country) must be approximately Normal.

Step-by-step explanation:

For a paired test, there are two measured values of a particular point, here what is measured is the time taken for each of rap and country music by each student.

The difference :

t2 - t1 = time with rap music - time with country music.

The number of samples usually associated with t distribution is usuall y very small (n ≤ 30).

Answer:

x-intercept and y-intercept are both 0

the domain (x) is [-4, 4]

the range (y) is [-4, 4]

Answer:

x =30.7

Step-by-step explanation:

Here, we want to find the value of x

To get this, we use the appropriate trigonometric ratio

From what we have, we have the side facing an angle which is the opposite and the side not facing an angle or the right angle; this is the adjacent

The trigonometric identity that links the opposite and the adjacent is called the tan

It is the ratio of the opposite to the adjacent

Thus, we have;

tan 61 = x/17

x = 17 * tan 61

x = 30.7

Answer:

600,000 km²

Step-by-step explanation:

Using the exponential regression calculator : the regression fit obtained for the data is :

36510 * (1.08^x)

After 40 years ;

x = 40

Hence,

y = 36510 * 1.08^40

y = 36510 * 21.72452

y = 793,162.27 km

Hence, y is closest to 800,000 km

Answer:

Circumference of a circle A = [tex]389.7 \,\,inches[/tex]

Area of a circle A = 12081.1 square inches

Step-by-step explanation:

Let [tex]r[/tex] denotes radius of circle B.

Circle A has a radius that is five more than twice as long as the radius of circle B.

So,

Radius of circle A = [tex]5+2r[/tex]

Diameter of circle = 2 (radius of circle)

So,

Diameter of circle B = 2r

Diameter of circle A = [tex]2(5+2r)[/tex]

Sum of the diameters of the circles A and B = [tex]2r+2(5+2r)[/tex]

                                                                         [tex]=2r+10+4r[/tex]

                                                                         [tex]=6r+10[/tex]

As sum of the diameters of the circles is 88 inches,

[tex]6r+10=88\\6r=78[/tex]

[tex]r=13[/tex] inches

Radius of a circle A = [tex]2(5+2r)[/tex]

                                [tex]=2[5+2(13)][/tex]

                                [tex]=2(5+26)[/tex]

                                [tex]=2(31)[/tex]

                                [tex]=62[/tex] inches

Let R denotes radius of a circle A.

R = 62 inches

Circumference of a circle [tex]=2\pi R=2\pi (62)=124\pi =124(\frac{22}{7})=389.7 \,\,inches[/tex]

Area of a circle [tex]=\pi r^2=\pi (62)^2=3844\pi=3844(\frac{22}{7})=12081.1[/tex] square inches

Answer:

y = 2x

Step-by-step explanation:

here in this case, x = independent variable whereas y is the dependent variable.

Now, Equation that represents a proportional relationship with a constant or proportionality of 2 is y =2x.

as y= 2x

⇒ y/x = 2

Answer:

The only true statement is C

Step-by-step explanation:

The area of Amy's garden is 176 in²

The area of Burts garden is 324 in²

Therefore the only true statement is C.

Answer:

its 48

Step-by-step explanation:

Answer:

no

Step-by-step explanation:

no

Answer:

no they are the illuminati

Step-by-step explanation:

Answer:

x = 45

Step-by-step explanation:

All triangles add up to 180°

x + 75 + 60 = 180

x + 135 = 180

x = 180 - 135

x = 45

Answer:

1. if y varies directly as x, and y = 6 when x = 2, the constant of variation is k = 6/2= 3. Thus, the equation describing this direct variation is y = 3x.

2. Partial Variation, where two variables are related by a formula, such as the formula for a straight line (with a non-zero y-intercept)

example :

in the milk factory Carol makes $10 per hour but gets an extra $20 from another job. since Carol gets a $20 allowance regardless of how much she works, if we want to represent Carol's situation in the form of an equation, it would be

Y=10x + 20

therefore if she worked zero hours

(Y=10(0) + 20),

she would still make $20 unconditionally and for every hour she works, she gets $10 more including the initial $20.

thus Carol's equation would be a partial variation, since her income doesn't entirely depend on how much she works.

3. a relation is non linear because it is has a direct relationship between an independent variable and a dependent variable.

In a relation, changes in the output do not change in direct proportion to changes in any of the inputs.

relations does not create a straight line but instead creates a curve.

Answer:

30

Step-by-step explanation:

Solve for the hypotenuse for the bottom triangle (a^2+ b^2=c^2). You should get 40. After solving that you should be able to solve for c in the top triangle which should get you 30.