are my answers wrong? If they are what would be the correct ones?

If the output and input of a linear equation are proportional, the graph of the equation cross the x-axis at (0, 0).

In any function, the amount of one quantity is dependent on the amount of another. All proportional functions use a rate in the same way. We call the rate the constant of variation, or the constant of proportionality. It’s a constant because this number does not change within the function. Because the input and output are linked by a constant, changes in the independent variable cause the dependent variable to change in a proportional, steady way.

y ∝ x

⇒ y = kx

where k is the constant of proportionality.

For the graph of this function to cross x axis, y = 0

When y = 0  and k is some non zero constant value, x = 0

Thus, the coordinate at which the graph of the function crosses x axis is (0, 0).

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Answer:

3x + 3 = 54 degrees

x + 2 = 19 degrees

Step-by-step explanation:

Since, both angles add up to 73 degrees, write these equation

X + 2 + 3x + 3 = 73

4x + 5 = 73

4x = 73 - 5

4x = 68

4x/4 = 68/4

x = 17

Substitute the value of x to x + 2 and 3x + 3

x + 2

17 + 2 = 19°

3x + 3

3(17) + 3

51 + 3 = 54°

Now add them

54 + 19 = 73°

Answer:

[tex]\left[\begin{array}{cc}1&-1\\3&1\\1&-2\end{array}\right][/tex]

Step-by-step explanation:

Subtract each element.

Answer:

the answer is inspection

Step-by-step explanation:

Answer:

Tip formula

In general, the tip amount is the cost times 0. xx and your total including tip, is the cost times 1. xx where xx = the percent you want to leave. If you want to leave a 20% tip, multiply the cost by 0.20 to get the tip amount or multiply the cost by 1.20 to get the total including tip.

Answer:

what type of witch craft is that

Step-by-step explanation:

Answer:

(-5, 1)

Step-by-step explanation:

see the graph below

or you can plot points for x = 1, 2, 3 for both graphs and join those lines

and find the intersecting point

which is (-5, 1)

Answer:

quadratic

Step-by-step explanation:

Answer:

42 is an area

Step-by-step explanation:

The area of a trapezium.

= 1/2 x (a + b) x h

Where a and b are the two parallel sides.

The area of a semicircle.

Area of a circle = πr²

Area of the semicircle = 1/2 x πr²

The area of20mm 14mm 32mm is 521 mm²

A circle is a two-dimensional figure with a radius and circumference of 2 x pi x r.

The area of a circle is given as:

Area = πr²

We have,

Figure:

The figure is a combination of a trapezium and a semicircle.

The area of a trapezium.

= 1/2 x (a + b) x h

Where a and b are the two parallel sides.

a = 32 mm

b = 20 mm

h = 14mm

= 1/2 x (32 + 20) x 14

= 52 x 7

= 364 mm²

The area of a semicircle.

Area of a circle = πr²

Area of the semicircle = 1/2 x πr²

Diameter = 20 mm

Radius = 20 / 2 = 10 mm

= 1/2 x π x 10²

= 1/2 x 3.14 x 10 x 10

= 3.14 x 10 x 5

= 157 mm²

Now,

The area of the figure.

= area of trapezium + area of semicircle

= 364 + 157

= 521 mm²

Thus,

The area of20mm 14mm 32mm is 521 mm²

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Answer:

l=4π

Step-by-step explanation:

θ=l/r

l=rθ

r=6

θ=(2π/3)

l=rθ=6×2π/3=4π

Answer:

1579.5

Step-by-step explanation:

i think ...

81 x 39 =3159 / 2 (because there are 2 sides )=1579.5

Answer:

Step-by-step explanation:

= 8^7 = 2^21

Answer:

[tex]8^{7}[/tex] hopefully this helps

Step-by-step explanation:

Answer:

(f+g)(x)=4x-3

[tex](f•g)(x)=3( {x}^{2} - x - 6)[/tex]

(f-g)(x)= -4x-9

{f-g}(-4)= -6

Answer:i believe its 16.6667

Step-by-step explanation:

Answer:

32.7 min

Step-by-step explanation:

60 x 300 = 18000 /  550 = 32.7

Answer:

8

Step-by-step explanation:

distribute

30-3x=6

get x alone

-3x=6-30

-3x=-24

divide

x=8

Answer:

Greater than 2+5

Answer: The answer is B

Step-by-step explanation:

The transformation applied to A'B'C'D' is rotating the quadrilateral by 90 degrees counterclockwise about the origin, then translating 3 units left

The measure of the amount a figure is rotated about the center of rotation is called the angle of rotation. The angle of rotation is usually measured in degrees. We specify the degree measure and direction of a rotation.

90° clockwise rotation: (x,y) becomes (y,-x)

90° counterclockwise rotation: (x,y) becomes (-y,x)

180° clockwise and counterclockwise rotation: (x, y) becomes (-x,-y)

270° clockwise rotation: (x,y) becomes (-y,x)

270° counterclockwise rotation: (x,y) becomes (y,-x)

Given data ,

Let the quadrilateral be represented as ABCD

Now , the transformed quadrilateral is A'B'C'D'

And , coordinates are A ( 1 , 5 ) , B ( 1 , 9 ) , C ( 5 , 9 ) and D ( 5 , 5 )

Now , the square is rotated by 90° counterclockwise and translated 3 units to the left

So , 90° counterclockwise rotation: (x,y) becomes (-y,x)

The coordinates are A' ( -5 - 3 , 1 ) , B' ( -9 - 3 , 1 ) , C' ( -9 - 3 , 5 ) and D' ( -5 - 3  , 5 )

The coordinates are A' ( -8 , 1 ) , B' ( -12 , 1 ) , C' ( -12 , 5 ) and D' ( -8  , 5 )

Hence , the quadrilateral is rotated by 90° counterclockwise and translated 3 units to the left

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Answer:

i know this has nothing to do with your question, but is that..

Step-by-step explanation:

pure vanilla pfp?

We then swap this around for the lower number that equals to 100.

100-60= 40

40%

I hope this is helpful.

Answer:

If the retail price was $175.00, and you purchased this item for $105.00, then the discount was 40%

Step-by-step explanation:

[tex]\frac{105}{175} = \frac{21}{35}= \frac{3}{5} = 0,6[/tex] - that means you paid 60% out of the total price

the discount however is not the percentage that you paid, but the X% OFF, so in that case:

[tex]100 - 60 = 40[/tex]

The discount on this item was 40%

Answer:

[tex]y=e^x+3[/tex]

Step-by-step explanation:

y=e^x will go through (0,1). Since it goes through (0,4), then the function moves up 3 units. So we need to add 3 after e^x

Answer:

The points are (0,-1) (1,-1)

Step-by-step explanation:

Answer:

percent increase.

Step-by-step explanation:

Answer:

17

20

7.34

2/9

6

1/4

I can't solve the others cause there are not enough info for me to answer.

Answer:

[tex]y=-4x^2+8x-1[/tex]

Step-by-step explanation:

I am assuming the parabola has his axis parallel to the y axis. You should remember from theory that the axis (and thus the first coordinate of the vertex) is [tex]-\frac b{2a}[/tex] and then you have two points of passage.

[tex]-b/2a = 1\\a(1)^2 +b(1)+c =3\\a(2)^2+b(2)+c=-1\\[/tex]

Let's solve subtracting the 3rd from the second and keeping the first as is (ok, slightly rewriting it).

[tex]2a=-b\rightarrow 2a+b =0 \\a+b+c=3\\4a+2b+c=-1\\III-II: 4a+2b+c-a-b-c=-1-3 \rightarrow 3a+b=-4 \rightarrow a +(2a+b)=-4\\a= -4; b=8; c =3 +4 -8 =-1[/tex]

My answer was incorrect and I don't know how to delete an answer

Answer:

9 4

- + -

3 2

Step-by-step explanation:

Replace the first x with 9 and the second with 4

Answer:

75*10=750

Step-by-step explanation:

10 tickets, each 75 dollars, so u multiply 75 by 10 to get 750, just write 75 and rop the 0. $750

Answer:

$750

Step-by-step explanation:

To find the cost of 10 tickets multiply cost of 1 by 10

1 0 cost = $75 × 10 = $750

Answer:

the answer is 7 candy bars

Step-by-step explanation:

theres two ways of doing this the equation way and the common sense way m(x) basically just means y so y= 3x -20 we can set y to 0 so 0 = 3x -20 next add 20 to the other side 20 = 3x then divide both sides by 3 you get x= 6.666 but you cant sell .666 of a chocolate bar so round to 7 and thats your answer. the other strategy is saying hey i get $3 per candy bar what number would put be at 21 since 21-20= $1 and we say 7*3 = 21 so 7 is the answer.