I need help on 20 please and thank you

Answer:

quadratic

Step-by-step explanation:

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:

[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

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:

10k^6 + 13k - 11

Step-by-step explanation:

Write (7k^6 + 6k – 10) - ( - 3k^6 - 7k+1)​ in column format:

  (7k^6 + 6k – 10)

- ( - 3k^6 - 7k+1)

Distribute the - sign throughout the second expression:

​

  (7k^6 + 6k – 10)

(  3k^6 + 7k - 1)

--------------------------     Combine like terms

 10k^6 + 13k - 11       This is the correct end result after the indicated

                                   subtraction

Answer:

32.7 min

Step-by-step explanation:

60 x 300 = 18000 /  550 = 32.7

Answer:

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

Step-by-step explanation:

Answer:

9+8b^(2)

Step-by-step explanation:

common factors are -1, 1

Answer:

l=4π

Step-by-step explanation:

θ=l/r

l=rθ

r=6

θ=(2π/3)

l=rθ=6×2π/3=4π

Answer:

percent increase.

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:

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:

Vjfxfffccvvvvvv bună ziua domnule profesor

Step-by-step explanation:

Hgvjhgxxgyjjbvccjkn Hugh bună bună bună bună bună bună bună bună ziua de Emilia Caldararu de la 1 februarie bună nu gytffhgyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy bună ziua okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk vhg

Answer:

You forgot to put the link in or photo so no one can help

Step-by-step explanation:

Answer:

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

Step-by-step explanation:

Subtract each element.

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:

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:i believe its 16.6667

Step-by-step explanation:

Answer:

the answer is inspection

Step-by-step explanation:

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.

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:

9 4

- + -

3 2

Step-by-step explanation:

Replace the first x with 9 and the second with 4

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:

10

Step-by-step explanation:

They won 5 for every 3 they lost.

Multiply both numbers by 2 to still have the same ratio.

They won 10 for every 6 they lost.

10 + 6 = 16

They won 10.