Which of the following is the graph of
x2 + 2x - 3?

x+2

Answer:

The researcher can be 90% confident that the interval from 0.626 to 0.658 captures the true proportion of all drivers who use “drive mode.”

Step-by-step explanation:

edge2021

Answer:

I apologise, my device only allows me to see the first screenshot.

A: The general trend is an increase through the graph.

B: The median of the data is 5.

C. The mean of the data is 4.7

D. The median would not be affected, but the mean would increase.

Step-by-step explanation:

Answer:

57.4

Step-by-step explanation:

Answer:

Step-by-step explanation:

20+20+7.5+7.5= 55

this is for the bottom have

20+20+6.5+6.5= 53

thats for the upper half

than you just add them and get 108

Step-by-step explanation:

Answer and Step-by-step explanation:

The answer is A.

y = x + 2 and y = -2x + 4

This is because:

- The graph going from left to right matches the first equation, in which the graph has a slope of 1 and has a y-intercept at (0, 2).

- The graph going from right to left matches the second equation, in which the graph has a slope of -2 (Since it is going from right to left), and has a y-intercept at (0, 4).

#teamtrees #PAW (Plant And Water)

Answer:

x=5

Step-by-step explanation:

First off, you need to subtract 67 from 17 to get the variable alone.

That will leave you with -10x=-50

Then you need to divide -10 and -50,

Two negatives make a positive so

x=5

Answer is C

Answer:

The answer is B

Step-by-step explanation:

To crosses the x axis put y=0

[tex] {x}^{2} + 7x = 0 \\ x( x + 7) = 0 \\ x = 0 \\ x = - 7[/tex]

Answer:

[tex](-6, 0)[/tex]

[tex](0, -2.3)[/tex]

[tex](0,\frac{3}{4})[/tex]

Step-by-step explanation:

Solving (1). x-intercept: -6

At x intercept, [tex]y= 0[/tex]

So, the ordered pair is: [tex](-6, 0)[/tex]

Solving (2):  y-intercept: -2.3

At y intercept, [tex]x = 0[/tex]

So, the ordered pair is: [tex](0, -2.3)[/tex]

Solving (3): y-intercept: 3/4

At y intercept, [tex]x = 0[/tex]

So, the ordered pair is: [tex](0,\frac{3}{4})[/tex]

Answer:

6 faces. pls mark brainliest

Answer:

162 ft^3

Step-by-step explanation:

volume = area of base * height

V = 22 1/2 ft^2 * 7 1/5 ft

Change the mixed numerals into fractions.

V = 45/2 ft^2 * 36/5 ft

Multiply the fractions.

V = 45/2 * 36/5 ft^3

Switch the denominators.

V = 45/5 * 36/2 ft^3

Simplify each fraction.

V = 9 * 18 ft^3

V = 162 ft^3

Answer:

hi the answer is 29

Step-by-step explanation:

Answer:

29

Step-by-step explanation:

Step-by-step explanation:

you will have 100% * 60 = X * 80 so X = 100% * 60/ 80

Answer:

75

Step-by-step explanation:

The answer is attached. I hope you are able to understand and it helps you. If you have doubt you can ask, I will repost the answer with proper explanation.

Answers:

==========================================================

Explanation:

Match up (7x+3)(7x-3) with (a+b)(a-b)

We have

We can see that a = 7x and b = 3

Furthermore, we can say,

(a+b)(a-b) = a^2 - b^2

(7x+3)(7x-3) = (7x)^2 - (3)^2

(7x+3)(7x-3) = 49x^2 - 9

The values of a and b are 7x and 3 respectively

(7x+3) (7x−3)

Using the format

(a + b)(a − b) = a² − b²

Therefore,

a = 7x

b = 3

Therefore,

From (a + b)(a − b) = a² − b²

(7x+3) (7x−3) = (7x)² - 3²

(7x+3) (7x−3) = 49x² - 9

learn more on factorisation here: https://brainly.com/question/22190900

Answer:

3.62

Step-by-step explanation:

Cash or store credit

Answer:3.62

Step-by-step explanation:

Answer:

5.56 m

Step-by-step explanation:

Circumference = 2πr

r is the radius, however the diameter is given. The radius is half the diameter. So the radius is:

1.8 ÷ 2 = 0.9

Circumference = 2 × π × 0.9

= 5.56 m ( in 3 significant figures )

Answer:

a = 10.9

b = 10.4

Step-by-step explanation:

part a: use sine

⇒ sine = [tex]\frac{opposite}{hypotenuse}[/tex]

⇒ sine 23 = [tex]\frac{y}{28}[/tex]

(sine 23 = 0.39)

⇒ 0.39 = [tex]\frac{y}{28}[/tex]

multiply each side by 28

⇒ 0.39 x 28 = [tex]\frac{y}{28}[/tex] x 28

⇒ 10.9

part b: use cosine

⇒ cos = [tex]\frac{adjacent}{hypotenuse}[/tex]

⇒ cos 29 = [tex]\frac{y}{12}[/tex]

(cos 29 = 0.87)

⇒ 0.87 = [tex]\frac{y}{12}[/tex]

multiply 12 on both sides

⇒ 0.87 x 12 = [tex]\frac{y}{12}[/tex] x 12

⇒ 10.4

Answer:

620

Step-by-step explanation:

selling 400 doughnuts means selling 800 £ worth of doughnuts. 800 x 0.4 ( to find 40 percent) = 320, + 300 because the the fixed cost = 620. :)

The total cost per day of producing 400 doughnuts is £620.

The total cost of producing doughnuts is the sum of fixed cost and variable cost. Fixed cost is the constant that remains constant regardless of the amount of doughnuts made. Variable cost is the cost that varies with the number of doughnuts made.

Total cost = fixed cost + variable cost

Fixed cost = £300

Variable cost = average variable cost x number of output

Average variable cost = 40% x £2

= 0.40 x £2 = 0.80

Variable cost = £0.80 x 400 = £320

Total cost = £320 + £300 = £620

A similar question was answered here: https://brainly.com/question/22122701

Answer:

1. x = 2

y = 1

2. x = 3 or 6 (Mistake or typo in problem)

3. y = 13

4. x = 7

y = 15

5. x = 4

Step-by-step explanation:

1. 6x - 3 = x + 7, 5x = 10, x = 2

3y + 2 = y + 4, 2y = 2, y = 1

2. There is most likely a typo. Either 8x = 24 and x = 3 or 2x + 10 = 3x + 4 and x = 6

3. 5y -3 = 2y + 36, 3y = 39, y = 13

4. 8y + 11 + 3y + 4 = 180, 11y + 15 = 180, 11y = 165, y = 15

7x = 3y + 4 = 49, x = 7

5. 7x - 10 = 4x + 2, 3x = 12, x = 4

Answer:

1.[opposite side of parallelogram are equal:]

6x-3=x+7

6x-x=7+3

x=10/5=2

x=2

again

y+4=3y+2

4-2=3y-y

y=2/2=1

y=1

2.

[diagonal of parallelogram bisect each other]

8x=24

x=24/8=3

x=3

again

2x+10=3x+4

10-4=3x-2x

x=6

3.

5y-3=2y+36 [alternate angle]

5y-2y=36+3

y=39/3=13

y=13°

4.

8y+11+3y+4=180°[co interior angle]

11y=180-15

y=165/11=15

y=15°

again

7x=3y+4=3×15+4=49° .[opposite angle of parallelogram are equal:]

5..[opposite side of parallelogram are equal:]

7x-10=4x+2

7x-4x=10+2

3x=12

x=12/3

x=4

Answer:

C. [tex] 302 \: {cm}^{2} [/tex]

Step-by-step explanation:

[tex]Area \: of \: sector = \frac{ \theta}{360 \degree} \times \pi {r}^{2} \\ \\ = \frac{135 \degree}{360 \degree} \times \pi {r}^{2} \\ \\ = \frac{135 }{360 } \times 3.14 \times {(16)}^{2} \\ \\ = \frac{108,518.4 }{360 } \\ \\ = 301.44 \\ \\Area \: of \: sector \approx \: 302 \: {cm}^{2} [/tex]

Answer:

f(1) = 4

Step-by-step explanation:

f(1)  means let x=1 and find the y value at that point on the graph

At x=1 there is an open circle and a closed circle.  The open circle means that the function does not have a value at that point, so we use the closed circle

f(1) = 4

Answer:

27 + 10d

Step-by-step explanation:

Answer:

10d+27

Step-by-step explanation:

Rearrange terms

3

(

9

+

2

)

+

4

3

(

2

+

9

)

+

4

2

Distribute

3

(

2

+

9

)

+

4

6

+

2

7

+

4

3

Combine like terms

6

+

2

7

+

4

1

0

+

2

7

Answer:

7:10

Step-by-step explanation:

Answer:

4/1

Step-by-step explanation:

Answer:

We have the value as;

8x/5

Step-by-step explanation:

Here, we want to get the breakdown of the given expression

We have (x^2 - 9) as (x-3)(x + 3)

So we have;

2x/(x + 3) * (x-3)(x+3)/5 * 4/(x-3)

= 2x * 4/5= 8x/5

Answer:

C

Step-by-step explanation:

exponential functions multiply

Answer:

Dum dum

Stu Stu

Step-by-step explanation:

Answer:72.25

Step-by-step explanation:

Answer:

y - 2x = 3

Step-by-step explanation:

Use the point-slope formula y - k = m(x - h), with h = 0, k = 3 and m = 2:

y - 3 = 2(x - 0), or

y - 3 = 2x, or

y - 2x = 3

Note that the given point, (0, 3), is the y-intercept of this line, and so we immediately know b in y = mx + b:  it is 3.