Twenty air-conditioning units have been brought in for service. Twelve of them have broken compressors, and eight have broken fans. Seven units are chosen at random to be worked on. What is the probability that three of them have broken fans

Answer:

its actually 11.96

Step-by-step explanation:

because divide 17.94 by 3 = 5.93

5.93 times 2 = 11.96

Answer:

D) (x + 4)(x+3)(x+2)

Step-by-step explanation:

Used synthetic division to find factors.

Answer:

True

Step-by-step explanation:

Answer:

whichshape's permeteris less shape A or D shape.

Answer:

ask google assistaint then if you dont get it go f yourself like u did to me

Step-by-step explanation:

Answer:

-1,1

Step-by-step explanation:

Answer:182

Step-by-step explanation:

Answer:

the comment thread on this question is a mess, so the correct answer is INCREASING

Step-by-step explanation:

The function is both increasing and decreasing on the interval [-2, 1]

The complete question is added as an attachment

The interval is given as:

[-2, 1]

From the table of values, we have:

x     y

-2   12

-1     0

0     6

1     7.5

The y values decrease from 12 to 0 and then increase to 7.5 through 6.

This means that the function is both increasing and decreasing on the interval [-2, 1]

Hence, the true statement is (c)

Read more about function interval at:

https://brainly.com/question/1600302

#SPJ9

Answer:

A) There are more workers in the L.A area that take up to 20 minutes to get to their job.

B)40 minutes or more.

Step-by-step explanation:

Even though the graph from the New York area is more well distributed, you can see a clear increase in the number of cases above 40 minutes in the New York area compared to the Los Angeles, which are probable around 3o workes, while in the New York Area graph those travel times are reserved for more than half of the workers that were interviewed, so we can assure that workers from the New York Area spend more time traveling to their jobs.

Answer:

8 essay-type questions

Step-by-step explanation:

This is the answer because:

1) 2 out of 5 is the same as 2/5

2) Next, we have to get 2/5's denominator to equal 20.

2 x 4/5 x 4 = 8/20

3) 8/20 means that 8 of the test questions are essay-type

Hope this helps!

Answer: o

Step-by-step explanation:

Answer:

the letter '0' ..........

Answer:

9 · 2⁹

(-½, ½)

Step-by-step explanation:

The nth term of the original power series is 2ⁿ xⁿ.

Therefore, the nth term of the derived power series is:

d/dx (2ⁿ xⁿ) = n · 2ⁿ xⁿ⁻¹

When n=9, the term is 9 · 2⁹ x⁸.

Use ratio test:

lim(n→∞)│aₙ₊₁ / aₙ│

lim(n→∞)│((n+1) · 2ⁿ⁺¹ xⁿ) / (n · 2ⁿ xⁿ⁻¹)│

lim(n→∞)│(n+1) · 2x / n│

2│x│

The series converges when the limit is less than 1.

2│x│< 1

│x│< ½

-½ < x < ½

Check the endpoints.

If x = -½, the series is ∑ n · 2ⁿ (-½)ⁿ⁻¹ = ∑ -2n · (-1)ⁿ, which diverges.

If x = ½, the series is ∑ n · 2ⁿ (½)ⁿ⁻¹ = ∑ 2n, which diverges.

So the interval of convergence is (-½, ½).

Answer:

6

Step-by-step explanation:

4(3)-6

12-6=6

Answer:

x = 5

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Answer:

-9x+27=9x-63

-18x=-90

x=5

Step-by-step explanation:

Answer:119.43

Step-by-step explanation:

Answer:

3x^2 - 4

Step-by-step explanation:

6x^4 - 8x^2 ÷ 2x^2

= 3x^2 - 4

Answer:     uhnu

Step-by-step explanation: ugyfdtduyyggy

yjjh

Answer:

When x = 0, the first expression has a value of 4 and the second expression has a value of 5.

Step-by-step explanation:

please mark me brainiest

Answer:

p = -(3 r)/5 + q/5

Step-by-step explanation:

Solve for p:

3 r + 5 p = q

Hint: | Isolate terms with p to the left hand side.

Subtract 3 r from both sides:

5 p = -3 r + q

Hint: | Solve for p.

Divide both sides by 5:

Answer: p = -(3 r)/5 + q/5

Answer:

{33, 56, 65}

Step-by-step explanation:

Since, Hypotenuse of a right triangle is the longest side of the right triangle,

By Pythagoras theorem,

(Hypotenuse)² = (Leg 1)² + (Leg 2)²

Therefore, to prove the numbers representing the sides of a right triangle we will prove,

(largest number)² = (number 1)² + (number 2)²

Option (1)

{17, 30, 34}

34² = 17² + 30²

1156 = 289 + 900

1156 = 1189

But it's not true.

Therefore, these numbers doesn't represent the sides of a right triangle.

Option (2)

{11, 59, 61}

61² = 11² + 59²

3721 = 121 + 3481

3721 = 3602

Not true.

Therefore, these numbers doesn't represent the sides of a right triangle.

Option (3)

{33, 56, 65}

65² = 56² + 33²

4225 = 3136 + 1089

4225 = 4225

True

Therefore, these numbers represents the sides of a right triangle.

Option (4).

{20, 21, 30}

30² = 20² + 21²

900 = 400 + 441

900 = 841

Not True.

Therefore, these numbers doesn't represent the sides of a right triangle.

Answer:

12(1 + 4) AND 12(2 + 3) are the correct answers.

Step-by-step explanation:

24 + 36 = 60

12(1 + 4)=

12(5) = 60

12(2 + 3)

12(5) = 60

Hope this helps and pls do mark me brainliest if you can:)

Answer:

A. 27

B. 125

C. 857 [tex]\frac{3}{8}[/tex]

D. s³

Step-by-step explanation:

The volume of the cube = side × side × side = (side)³

Let us use this rule to complete the table

A.

∵ The side length of the cube = 3 units

∴ Its volume = 3 × 3 × 3 = 3³

∴ Its volume = 27 unit³

B.

∵ The side length of the cube = 5 units

∴ Its volume = 5 × 5 × 5 = 5³

∴ Its volume = 125 unit³

C.

∵ The side length of the cube = 9[tex]\frac{1}{2}[/tex] units

∴ Its volume = 9[tex]\frac{1}{2}[/tex] × 9[tex]\frac{1}{2}[/tex] × 9[tex]\frac{1}{2}[/tex] = (9[tex]\frac{1}{2}[/tex])³

∴ Its volume = 857 [tex]\frac{3}{8}[/tex] unit³

D.

∵ The side length of the cube = s units

∴ Its volume = s × s × s = s³

∴ Its volume = s³ unit³

Answer:

1:3

Step-by-step explanation:

there are 25 raisins for every 75 peanuts.

You can set this up as a fraction and simplify

25/75 = 1/3

so there is 1 raisin for every 3 peanuts.

Answer:

5

Step-by-step explanation:

5 * . 8 = 4

Answer:

x=1/5

Step-by-step explanation:

Answer:

The height of the tree is 80 meters.

Step-by-step explanation:

Let the height of the Christmas tree be x meters.

Then the length of the wire will be, (x + 9) meters.

And the wire will (x - 41) meters away from the base of the tree.

Consider the diagram below.

Use Pythagoras theorem to solve for x as follows:

[tex]AB^{2}=AC^{2}+CB^{2}[/tex]

[tex](x+9)^{2}=x^{2}+(x-41)^{2}\\\\x^{2}+18x+81=x^{2}+x^{2}-82x+1681\\\\x^{2}-100x+1600=0\\\\x^{2} -80x-20x+1600=0\\\\x(x-80)-20(x-80)=0\\\\(x-80)(x-20)=0[/tex]

The value of x is either 80 or 20.

If x = 20, then the base CB will be -21. This is not possible as length is always positive.

Thus, the value of x is 80.

Hence, the height of the tree is 80 meters.

9

Hi there !

2a + b - 3 =

replace a = 5 ; b = 2

= 2(5) + 2 - 3

= 10 + 2 - 3

= 12 - 3

= 9

Good luck !

Answer: 9

2a and b - 3 = ?

a = 5 ; b = 2

2(5/a) + 2/b - 3

Now we solve this.

10 + 2/b - 3

Subtract 3.

12 - 3

The answer is 9.

Answer:

4.8

Step-by-step explanation:

When you multiply two negative number you get a positive number.

Answer:

W>4

Step-by-step explanation:

writing this stuff because brainly wont let me have an answer less than 20 characters idohncbuwraderfmdvkbjlfl