help pls ill give u brainlest

Answer:

Researchers are 90% certain that the interval (0.06,0.10) contains the proportion.

Step-by-step explanation:

x% confidence interval:

A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.

90% confidence interval of 0.08 ± 0.02.

Thus:

Researchers are 90% certain that the interval (0.06,0.10) contains the proportion.

Answer: The slope is -5/3 or -1.4

Algebra

[tex]s = \frac{y2 - y1}{x2 - x1} [/tex]

[tex]s = \frac{5}{3} [/tex]

Answer:

Assume you need to find distance CD, between points C(-2, 2), D(4, -4)

Use distance formula:

Answer:

C(x1,y1)=(-2, 2), D(4, -4)

D(x2,y2)=(4, -4)

we have

the length of line segment CD

=[tex]\sqrt{(x2-x1)²+(y2-y1)²}\\ \sqrt{(4+2)²+(-4-2)²}=8.48 units[/tex]

Answer:

Step-by-step explanation:

Given ,

Sum of 3 times m = 3m

And 4 times m = 4m

Hence,

Sum is = 3m + 4m = 7m (Ans)

Answer:

3 x 4 x 380

Step-by-step explanation:

The correct strategy that he could use would be

3 x 4 x 380

This is basically splitting up the 12 into two numbers whose product equals 12. This shrinks the numbers and makes it easier to multiply the 380. Since it is easier to multiply 380 by 4 as opposed to 12. This strategy will still give you the same result as 12x380 and both will give you a product of 4,560

Answer:

23/2000

Step-by-step explanation:

1.15%=0.0115=115/10000

simplified

23/2000

Answer:

SSS

Step-by-step explanation:

∆ ABC after reflected over y-axis and then translated by 2 units down ===> ∆A"B"C"

so the size of sides doesnt change

Answer:

(-10, -8)

Step-by-step explanation:

4u

Each component of vector u is multiplied by 4. So

u = (3, 1)

4u = (4*3, 4*1) = (12,4).

v – 4u

Subtraction of the components of vector v by the components of the vector 4u. So

v - 4u = (2, -4) - (12, 4) = (2-12, -4 - 4) = (-10, -8)

The value is (-10, -8)

Answer:

Simulateneous equation

Step-by-step explanation:

Have to slove the equation given then plot the graph

Answer:

Graph a line segment with endpoints (1,-8) and (-4,3).

Step-by-step explanation:

Just identity the endpoints of the line segment given, then swap the coordinates for each pair to graph it's inverse.

Original point -> Corresponding inverse point

(a,b) ->(b,a)

(-8,1) ->(1,-8)

(3,-4) ->(-4,3)

So graph the other inverse which is also a line segment using endpoints (1,-8) and (-4,3).

(The inverse graph is just a reflection of the original relation over y=x.)

Answer:

13.5

18.1

72.2

12.8

6,2

66.1

49.1

14

31.8

Step-by-step explanation:

In solving this question, remember the annotation SOHCAHTOA

1. We are given the value of the hypotenuse and we are to determine the value of the adjacent side. COS would be used to determine this value

Cos 26 = Adjacent / hypotenuse

cos 26 = x / 15

x / 15 =0.8988

x = 15 x 0.8988 = 13.5

2. We are given the value of the hypotenuse and we are to determine the value of the opposite side. SIN would be used to determine this value

Sin = opposite / hypotenuse

sin 49 = x / 24

0.7547 = x / 24

x = 0.7547 x 24

x = 18.1

3. We are given the value of the opposite side and we are to determine the value of the adjacent side. TAN would be used to determine this value

Tan = opposite / adjacent

tan 14 = 18 /x

18 / 0.2493 = 72.2

4.  We are given the value of the adjacent and we are to determine the value of the hypotenuse side. COS would be used to determine this value

cos 67 = opposite / hypotenuse

0.3907 = 5/x

x =5/  0.3907 = 12.8

to determine the missing angle

7. tan^-1 = opposite / adjacent

8. cos^-1 = adjacent / hypotenuse

9 = sin^-1 = opposite / hyotensue

Answer:

Is it any of the rational numbers?  There are an infinite number of rational numbers.  Rational numbers are any numbers that can be written as a fraction.  All the integers between those two points (-2, -1, 0, etc.) are all rational.  Any of the numbers between the points would be too. 1/2, 1/3, 2 1/3, etc.

Step-by-step explanation:

18. (5+3i) + (2-2i)

8 + 0

Answer = 8

19. (8+9i) + (5-9i) - (8-7)

17 + -4 - 1

- - = +

:. -4 + 1 = -3

17 - - 3

Answer = 20

20. (6+8i)(3-2i)

14 × 1

Answer = 14

Answer:

Hello! answer: 10

Step-by-step explanation:

you do a^2+b^2=c^2 meaning

8 × 8 + 6 × 6 will equal a number which then we have to find out the square root of that number meaning what number you can multiply by itself to get that number so...

8 × 8 = 64

6 × 6 = 36

64 + 36 = 100

√100 = 10

10 × 10 = 100 therefore the missing length is 10 hope that helps!

Answer:

Between 100 and 125

Step-by-step explanation:

Given

[tex]Min =60[/tex]

[tex]Q_1 = 100[/tex]

[tex]Median = 110[/tex]

[tex]Q_3 = 125[/tex]

[tex]Max =150[/tex]

Required:

Between which values will the box of the box plot will stretch

All box plots stretches between the lower quartile and the upper quartile.

From the question, we have:

[tex]Q_1 = 100[/tex] ---- lower quartile

[tex]Q_3 = 125[/tex] ---- upper quartile

Hence, the box will stretch between 100 and 125

Answer:

It's B, Points a and f. -5 and 5

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

Explanation:

Refer to the diagram below. Notice how I've formed 3 rectangles underneath the curve. The term "right Riemann sum" refers to the idea of making each rectangle's upper right corner be on the curve. The upper left corner spills over top, meaning we have an over-estimate going on here.

Simply find the area of each rectangle, and then add up those sub areas. That will get you to the final answer.

Note how we go from x = -1 to x = 5, which is a distance of 5-(-1) = 6 units. Split three ways and each interval is 6/3 = 2 units wide.

If we started at x = -1, then increasing 2 units leads us to x = -1+2 = 1 as the first x input we compute into f(x). This is the height of the first rectangle.

Then 1+2 = 3 is the next input, meaning f(3) is the height of the next rectangle, and so on. We keep going until all rectangles are accounted for.

----------------------

You should have these rectangle heights:

when moving from left to right.

They add up to 3+29+127 = 159. Double that to get to the final answer of 2*159 = 318

The formula I'm using is

[tex]\Delta x*(f(x_1) + f(x_2) + \dots f(x_n))[/tex]

where x1,x2,... represents the values 1, 3, and 5. These are the x values plugged into the function to get the corresponding heights (3, 29, 127)

Answer:

9 people can go to the amusement park.

Answer:

translation

Step-by-step explanation:

a translation. a translation is where the figure is moved, but not rotated or reflected.

Answer:

$30

Step-by-step explanation:

T = 750

B = 60(12)

T - B = X

750 - 720 = 30

Answer:

Tom saves 30 more dollars

Step-by-step explanation:

There’s 12 months in a year so

60 x 12 = 720

Tom has 750 so take away 720 that bill makes a year = 30

Answer:

[tex]Vertex = (-2,-25)[/tex]

Step-by-step explanation:

Given

[tex]f(x) = (x - 3)(x + 7)[/tex]

Required

The vertex

[tex]f(x) = (x - 3)(x + 7)[/tex]

Open bracket

[tex]f(x) = x^2 -3x+7x-21[/tex]

[tex]f(x) = x^2 +4x-21[/tex]

Express -21 as 4 - 25

[tex]f(x) = x^2 +4x+4-25[/tex]

Group as:

[tex]f(x) = (x^2 +4x+4)-25[/tex]

Factorize the expression in bracket

[tex]f(x) = (x+2)^2-25[/tex]

The vertex form is:

[tex]f(x) = a(x - h)^2 + k[/tex]

Where the vertex is:

[tex]Vertex = (h,k)[/tex]

[tex]Vertex = (-2,-25)[/tex]

Answer:

6.4

Step-by-step explanation:

Answer:

4.45 m/s

Step-by-step explanation:

Vertical distance, Sy = 5m

The speed of pebble when they hit her window :

Vx = Sx / t

We can obtain t using the relation :

Sy = 1/2 * at²

Where, a = acceleration due to gravity = 9.8m/s²

We can obtain t

5 = 1/2 * 9.8 * t²

5 = 4.9t²

t = √5/4.9

t = 1.01 seconds

Hence,

Speed, Vx = Sx / t

Vx = 4.5 / 1.01

Vx = 4.45 m/s

In the circumference formula given d is the diameter which is 2 times r ( r is the radius)

R is given as 6 feet, diameter = 2 x 6 = 12 feet.

Circumference = 12 feet x 3.14 = 37.68 feet

Step-by-step explanation:

thank youjjdjdkdkdkdkkdididososiid

Answer:

A

Step-by-step explanation:

f = 1/2s

Let s = 2  that means f = 1  That means for 2 cups of sugar there is 1 cup of flour.

This point must be on the graph

It is on A,  not on B, not on C

Answer:

A. 5:12   B. 12:51

Step-by-step explanation:

. Use the smaller hand as the hour hand and the bigger hand to track each minute.

Answer:

W=500-60d

Step-by-step explanation:

W=the remain water bottles

500=total water bottles

60water bottles times d=total water bottles at the end of days

If the school cafeteria has 500 water bottles in stock and sells a total of 60 water bottles per day, the function rule can be expressed as w = 500 - 60d

To write a function rule representing the given situation, we can use the variables w and d, where w represents the total number of water bottles in stock and d represents the number of days.

Initially, the cafeteria has 500 water bottles in stock. Every day, they sell 60 water bottles. So, at the end of each day, the total number of water bottles in stock decreases by 60.

Therefore, the function rule can be expressed as:

w = 500 - 60d

Here, 500 represents the initial number of water bottles in stock, and 60d represents the number of water bottles sold over d days, with d being the input variable.

This function rule calculates the remaining number of water bottles in stock (w) at the end of any given number of days (d), taking into account the initial stock of 500 and the daily sales of 60 bottles.

To learn more about function click on,

https://brainly.com/question/29074045

#SPJ2