If 21 is added to a number, the result is 41 less than twice the number. Find the number.

Answer:

B . . . . . .. . ....... .......

Answer:

is here a choice D? If there is, it must not be true

A, B, and C are true

A) 50<100

B) 60>30

C) 14>9

Answer:

9/2π cm is the correct answer.

Step-by-step explanation:

Arc Length of CD: 1/8 (36π)= 36/8π = 9/2 π cm.

The minimum z-score that a data point could have to remain in the top 30% of the data is 0.52.

We have,

To find the minimum z-score that a data point could have to remain in the top 30% of a set of data, we need to find the z-score that corresponds to a cumulative probability of 0.70 (since the top 30% is equivalent to the cumulative probability of 0.70).

Using a standard normal distribution table or a statistical calculator, we can find that a cumulative probability of 0.70 corresponds to a z-score of approximately 0.52 (rounded to two decimal places).

Therefore,

The minimum z-score that a data point could have to remain in the top 30% of the data is 0.52.

Learn more about z-score here:

https://brainly.com/question/15016913

#SPJ2

Answer:

Option A

Step-by-step explanation:

It's given that cosθ = [tex]-\frac{2\sqrt{5} }{5}[/tex]

Since, cosθ = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex] = [tex]-\frac{2\sqrt{5} }{5}[/tex]

                                        = [tex]\frac{2}{\sqrt{5}}[/tex]

By applying Pythagoras theorem in the right triangle,

(Hypotenuse)² = (Opposite side)² + (Adjacent side)²

(√5)² = (Opposite side)² + (2)²

5 = (Opposite side)² + 4  

Opposite side = √(5 - 4)

                       = 1

Since, sinθ = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]

                  = [tex]\frac{1}{\sqrt{5}}[/tex]

Since, sine is positive in IInd quadrant,

sinθ = [tex]\frac{1}{\sqrt{5}}[/tex]

Therefore, option A will be the answer.

Answer:

the last one

Step-by-step explanation:

Answer:

hi

Step-by-step explanation:

i think so,it is D

hope it helps

have a nice day

Answer:

Step-by-step explanation:

I wouldn't consider it biased, but I'll bet a stats person would. Their reason would be that those who enter the cafeteria are select segment of a school population.

Those are just four exceptions. There must be others -- like a staggered lunch period.

Answer:

Hope i helped but i am not sure chief if that is what you needed

Step-by-step explanation:

you said in the comment we need to find the gallons so if we have the cost  10$ per 2 gallons then 20$ per 4 gallons. Then technicly 1 gallon will be 0 $

But if we need to find the value of the red dots it's starting from the top

40$ for the value of 8

30$ for the value for 6

20 $ for the value of 4

10$ for the value of 2

You can conclude that the cost bar increases by 2 each time

Answer:

126 [tex]m^{2}[/tex]

Step-by-step explanation:

Answer:

1680

Step-by-step explanation:

480x3=1440

480/2=240

1440+240=1680

Answer:

It should be C

Step-by-step explanation:

I hope this helps!

Answer: 1/3 must be divided into fourths

Step-by-step explanation:

Answer:

first is 30 2nd was 18

Step-by-step explanation:

Answer:

1st on is A second is c

Step-by-step explanation:

Answer:

2. 8/10 is bigger

3. 7/8 is bigger

4. 1/2 is bigger

5. 8.12 is bigger

6. 4/6 is bigger

7. 7/12 is bigger

Step-by-step explanation:

Answer:

.764

Step-by-step explanation:

do it on a calculator (TI84)

Answer:

45.6°

Step-by-step explanation:

take the inverse cosine of 7/10: [tex]cos^{-1}(\frac{7}{10})[/tex]

plug it into a graphing calc and you get ≈ 45.573°, they want 1 decimal place so it would be ≈ 45.6°

Answer:

The answer is x=0

Step-by-step explanation:

2(0-3)+9=3(0+1)+(0)

2(-3)+9=3(1)+0

-6+9=3

3=3

Yes

Answer:

1/64

Step-by-step explanation:

probability of getting one question correct is 1/4

P(3 questions correct):  1/4 · 1/4 · 1/4

Answer:

Width is 3

Step-by-step explanation:

_____________

/ / |

/ ______________/ |

2.5| | |

f | | |

e | | |

e | | |

t | | |

| | /

| | /

|______________|/ 3 feet

4 feet

Answer:

The answer is 11

Step-by-step explanation:

Answer:

2x^2+9x-5

Step-by-step explanation:

(X+5)(x-1/2)

x^2-1/2x+5x-5/2

x^2+9/2x-5/2

multiply through by 2

2x^2+9x-5

The solid from the net is a cube

Answer: Cube

A cube has 6 faces, which makes this net accurate.

Answer:

v1 t = distance Bob travels  

v2 t + 20 = distance opponent travels

v1 t  = v2 t + 20

t = 20 / (v1 - v2) = 20 / (8 - 6) = 10 sec

In 10 sec Bob runs 80 m

In 10 sec opponent runs 20 + 60 m = 80 m

Answer:

Triangle 2

Step-by-step explanation:

5, 12, 13

Use the Pythagorean Theorem

a^2 + b^2 = c^2

a = 5

b = 12

c = 13

25 + 144 = 169

a and b are side lengths

c is the hypotenuse

The theorem states that the square of the side lengths of a right triangle added together equals the square of the hypotenuse

Answer:

B is the right triangle because the sum of the square of each of the two shortest sides will equal the square of the longest side.

Step-by-step explanation:

Pythagorean Theorem says if a triangle is a right triangle with side lengths a, b, and c, then a^2 + b^2 = c^2 where c is the length of the longest side.

So, A. 16^2= 7^2 + 12^2  256 does not = 193 NOT a right triangle

      B. 13^2= 5^2 + 12^2  169 = 169 Yes this is a right triangle

      C. 9^2= 4^2 + 5^2  81 does not = 41 NOT a right triangle

      D. 19^2= 8^2 + 15^2  361 does not = 289 NOT a right triangle

Answer:

[tex]\frac{-1.1x^{25} }{-1.1x^{11} }[/tex]     [tex]\frac{mx^{67} }{mx^{37} }[/tex]

Step-by-step explanation:

Sine (-1.1) is the same as (-1.1) you just put them together and if the numbers are by each other you just add up the exponents. But if the question says this [tex]\frac{-1.1x^{2} }{-1.1x^{3} }[/tex] than you subtract the exponents.

·[tex](-1.1)x^{13}X (-1.1)x^{12} = add\\\frac{-1.1x^{2} }{-1.1x^{2} } = subtract[/tex]

Hope this helps. Have a blessed day :)

Answer

1 and 0.89

Step-by-step explanation:

idrk tho

Answer:

[tex](-5)^3 * c^3[/tex]

Step-by-step explanation:

Given

[tex](-5)(-5)(-5) * c * c * c[/tex]

Required

The exponent form

We have:

[tex](-5)(-5)(-5) * c * c * c[/tex]

Apply the following law of indices;

[tex]x * x * x ...... = x^n[/tex]

So, the expression becomes:

[tex](-5)^3 * c^3[/tex]

Answer:

its c

Step-by-step explanation:

Did it on edge

Answer:

hello your question is incomplete, the missing part of the question is attached below

answer :

1) β1 = 0.25

  β2 = 4.85

2)  40.55 + 0.25 ( math score ) + 4.85 ( hours )

Step-by-step explanation:

1) The estimate for β1 and β2

From the attached excel result the estimates are ;

β1 = 0.25 : This shows the change in the mean value of the  final score in relation to the change in math score while the time is kept constant

β2 = 4.85 : This represents the change in the mean value of the final score in relation to the change in time while the math score is held constant

2) sample regression equation

The Final sample regression equation = 40.55 + 0.25 ( math score ) + 4.85 ( hours )

Answer:

160 sq. uits

Step-by-step explanation:

160 sq. uits é a resposta

Answer:

answer is in the picture above