Solve quickly please.

Answer:

There will be sufficient evidence to conclude. A further explanation is provided below.

Step-by-step explanation:

The given values are:

[tex]\sigma=1.8[/tex]

[tex]\alpha=0.05[/tex]

[tex]n=10[/tex]

As we know,

[tex]\bar{x}=\frac{\Sigma x_i}{n}[/tex]

  [tex]=\frac{71.5}{10}[/tex]

  [tex]=7.15[/tex]

The standard deviation will be:

⇒  [tex]s=\sqrt{\frac{1}{n-1} \Sigma(x_i- \bar{x})^2 }[/tex]

On substituting the values, we get

⇒     [tex]=\sqrt{\frac{1}{10-1} [(6.5-7.15)^2+...(7.7-7.15)^2]}[/tex]

⇒     [tex]=\sqrt{\frac{1}{9} [(6.5-7.15)^2+...(7.7-7.15)^2]}[/tex]

⇒     [tex]=0.477[/tex]

According to the question,

Hypotheses:

[tex]H_o: \sigma=1.8[/tex]

[tex]H_a: \sigma<1.8[/tex]

The test statistic will be:

⇒ [tex]X^2=\frac{(n-1)s^2}{\sigma^2}[/tex]

⇒       [tex]=\frac{(10-1)\times 0.477^2}{1.8^2}[/tex]

⇒       [tex]=\frac{2.0477}{3.24}[/tex]

⇒       [tex]=0.632[/tex]

Thus the above is the correct response.

Answer: All polygons follow a rule that the sum of their exterior angles will equal 360 degrees.

Answer:

1) Square

2) Trapezoid

3) Rectangle

4) Parallelogram

Step-by-step explanation:

Quadrilaterals must have exactly 4 sides.

The shapes in a square must have 2 pairs of parallel sides, 4 right angles, and 4 sides of equal length.

The shapes in a trapezoid must have at least one pair of parallel sides. The shapes in Group D must have 2 pairs of parallel sides and 4 sides of equal length.

The shapes in a rectangle must have 2 pairs of parallel sides and 4 right angles.

The shapes in Parallelogram must have exactly 2 pairs of parallel sides.

Answer:

yoooo

Step-by-step explanation:

Answer:

Luke will earn $ 418.50.

Step-by-step explanation:

Given that on weekends Luke gets paid $ 64.50 per hour, plus a flat rate service fee of $ 75 for every job, and on this Saturday he has three separate jobs that will take 1 1/2, 1/4, and 1 1/4 hours to complete respectively, to determine the money you will earn on the day the following calculations must be made:

(75 x 3) + (1.5 x 64.5) + (0.25 x 64.5) + (1.25 x 64.5) = X

225 + 96.75 + 16.125 + 80.625 = X

418.50 = X

So, all Saturday, Luke will earn $ 418.50.

Answer:

=48x2^+3097x+12

Step-by-step explanation:

3(4x+9)(4)x+2712x+277x+12

Distribute:

=48x2+108x+2712x+277x+12

Combine Like Terms:

=48x2+108x+2712x+277x+12

=(48x2)+(108x+2712x+277x)+(12)

=48x2+3097x+12

Answer:

Hello~

12x+3×9

12x + 27

Ary~

Answer:

60

Step-by-step explanation:

There are two ways to check that I know.

First way:

Double 50, 10 automatically doubles too.

50x2=100

10x2=20

Then we can multiply the 100 by to equal 300, the 20 also automatically multiplies to equal 60.

100x3=300

20x3=60

Second way:

10 is 20% of 50 we can find that bu multiplying 20% and 50, like this:

20%x50= 10

To find out the answer if the 5 was changed to a 300 we would have to multiply 20% of 300.

20%x300= 60

We've looked at two ways to solve this problem and both ways equal 60. So, therefore, the answer for this question is 60.

Answer:

[tex] \frac{4}{64} [/tex]

Step-by-step explanation:

The spinner is independent (the total won't be effected)

we know there is 2 whites with 8 coloured option.

[tex] \frac{2}{8} [/tex]

we want the probability of getting two whites.

[tex] \frac{2}{8} \times \frac{2}{8} = \frac{4}{64} [/tex]

there is 3 ways to work out probability, fraction, decimal and percentage (i'd personally say fraction is the most easiest)

The probability of Keisha to win a prize on both spins in a game of wheel which is divided in eight equal sectors is 1/16.

Probability of an event is the ratio of number of favorable outcome to the total number of outcome of that event.

Keisha is playing a game using a wheel divided into eight equal sectors, as shown in the diagram.

Each time the spinner lands on white, she will win a prize. If she spins this wheel twice,

Here, the white is appeared twice in the wheel and the total number of  sector in wheel are 8. Thus the probability of first time to come white in the spin is,

[tex]P=\dfrac{2}{8}\\P=\dfrac{1}{4}[/tex]

The conditions are same for the second case. For this case, both result of both the spins of wheel are independent of each other.

Thus, by the chain rule, the probability both spin as white sector appear is,

[tex]P=\dfrac{1}{4}\times\dfrac{1}{4}\\P=\dfrac{1}{16}[/tex]

Thus, the probability of Keisha to win a prize on both spins in a game of wheel which is divided in eight equal sectors is 1/16.

Learn more about the probability here;

https://brainly.com/question/24756209

Answer:

p+33+p-19+2p-46=180

Step-by-step explanation:

Add all your variables and all your numbers and then simplify

Answer:

p=53

Step-by-step explanation:

(p-19)+(p+33)+(2p-46)=180

53-19=34

53+33=86

2(53)-46=60

34+86+60=180

p=53

Answer:

666.67π .ft^3

here's your solution

=> radius of cone = 10 ft

=> height of cone = 20 ft

=> volume of cone = πr^2h/3

=> putting the value of radius and height

=> volume = 10^2*20/3π

=> volume = 666.67π .ft^3

hope it helps

Answer:

x = 47°

Step-by-step explanation:

Since CPD is a straight line, then

133 and x are adjacent angles and supplementary, sum to 180° , then

x + 133° = 180° ( subtract 133° from both sides )

x = 47°

answer:

if you rounded it the answer is 15 years old!

step-by-step explanation:

when know that your sister is 9 years old, so lets start off with that. because your sister is 4 older then your brother then that must mean that you brother is 5 years old

9-4

= 5

we also know that you brother is 1/3 your age so divide 5 by 1/3 or .33

5/ .33

= 15.15

but since it looks like we only need the whole number. just round down to 15 since your age is not close enough to round up to 16

( here is a tip i have gotten for rounding )

1-4 stay on the floor

5-9 climb the vine

haha they might sound super du-mb but they have helped me when i was younger!

hope this helps you and if you ever need anymore help/questions just ask me! :)

Answer:

I think the answer is 18.3984375 inches

Answer:

63

Step-by-step explanation:

9 * 7 = 63

Answer:

3 pounds 9 ounces

Step-by-step explanation:

Answer:

1. 12.20

2.8.9

3.31.4

4.13.9

5. 21.93

6. some of it is cut off.

Step-by-step explanation:

a^2+b^2=c^2

Time = distance / speed

Time = 18 km / 6 know

Time = 3 hours

Answer:

[tex] \bf \huge 3 \: hours[/tex]

Step-by-step explanation:

⟼ distance = 18 km

⟼ speed = 6 km/h

⟼ t = distance / speed

⟼ t = 18/6 h

⟼ t = 3h

⟼ time = 3 hours.

∴ dorkas take 3 hours. to arrive at school.

Answer:

10x = 75 100 ft X = 7.5 3.

Step-by-step explanation:

Answer:

I dont know cause I am too

Answer:

The length (which is the bottom and top lines) are both 9 inches long.

Step-by-step explanation:

To find the perimeter with only one given measurement and the total perimeter, first you need to double the given value. In this case it is 6 so 6 x 2 = 12. After that you need to find the rest of the sides so you can do 30 - 12 = x, or 12 + x = 30. As a total the answer is 18. Finally you divide 18 by two because there is two sides and you get 9.

Answer:

10

Step-by-step explanation:

10-5

Answer:

10

Step-by-step explanation:

Answer:

Where is the question?

Step-by-step explanation:

I don't see a question do you??

Answer:

-3 is the answer

Step-by-step explanation:

Answer: its A

Step-by-step explanation: Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Direction: Opens Down

Vertex:

(0,−1)

Focus: (0,−54)

Axis of Symmetry: x=0

Directrix: y=−3/4

x y

−2 −5

−1 −20

0 −1

1 −2

2 −5

Answer:

y=−x^2−2x+1

Step-by-step explanation:

Answer:

the third one down

Step-by-step explanation:

Answer:

2x+168=166

2x= -2

x=-2

LMT= 94

Step-by-step explanation: