A and B are mutually exclusive events. P(A) = 0.40 and P(B) = 0.30. What is
PA or B)?
A. 0.75
B. 0.22
C. 0.12
D. 0.70

1. D

2. B

3. B

4. C

5. A

6. C

7. C

8. B

9. D

10. D

Step-by-step explanation:

i just took the test

Answer:

Question 1 ⇔ .D

Question 2 ⇔ .B

Question 3 ⇔ .B

Question 4 ⇔ .C

Question 5 ⇔ .A

Question 6 ⇔ .A

Question 7 ⇔ .C

Question 8 ⇔ .B

Question 9 ⇔ .B

Question 10 ⇔ .D

Step-by-step explanation:

I hope this helps and have a good day!

Answer: c

Step-by-step explanation: if you draw second function you'll see they are the same so slop is also the same(0.5)

Answer:

  5x +4y

Step-by-step explanation:

The perimeter of a triangle is the sum of side lengths. That fact can be used to find z, the length of the third side.

  (2x +3y) +(5x -2y) +z = 12x +5y . . . . sum of sides is perimeter

  z = (12x +5y) -(7x +y) . . . . . . . . . . . . subtract (7x+y) from both sides

  z = 5x +4y . . . . . . . . . collect terms; the length of the third side

The third side of the triangle is (5x +4y).

Average daily balance method

Answer:

Obtuse

Step-by-step explanation:

Has angle >90.

Answer:

Obtuse

Step-by-step explanation:

An acute triangle has three angles that each measure less than 90 degrees. An equilateral triangle is a triangle in which all three sides are the same length. An obtuse triangle is a triangle with one angle that is greater than 90 degrees. A right triangle is a triangle with one 90 degree angle.
Since the largest angle is 104 and is larger than 90 it is an obtuse triangle

Answer:

True

Step-by-step explanation:

The reason why this is true is because it is totally related. In a Shield volcano, the eruption happens with very fast, less dense, and more magma than that which comes from the stratovolcano. In a stratovolcano, most of the things are just ash and toxic gases. So, that's why, the stratovolcano is also more dangerous.

So hence, your answer is True

Thanks!

MiniMeteorologist

Answer:

i think this is the answer for the first part then second part is y 0 -3 slope 1

Answer:

I used sine rule to find the length of b

Step-by-step explanation:

3(x-7) + 4 = 22

or,3x-21+4 = 22

or, 3x-17 = 22

or, 3x = 22+17

or, x = 39/3

    x = 13

Answer:

  c.) hourly rate

Step-by-step explanation:

The value the coefficient represents can often be learned from its units. The term 8t gives a value in currency units, since the expression 8t+20 is an amount that is to be paid. (We can only add like terms, so both 8t and 20 must have currency units.)

The value of t has units of hours, so the coefficient 8 must have units that are ...

  8 currency units/hour

That is, multiplying by hours gives currency units.

In this context, a number with units of currency units per hour is most likely the hourly rate of the rental.

Answer:

pair of pants = $53

Step-by-step explanation:

s = shirts

p = pair of pants

eq = equation

eq 1:          7s + 5p = 517

eq 2:           s + p = 89

multiply the equation 2 by 7

eq 3:        7s + 7p = 623

negate equation 1 and add it to the eq 3

      7s + 7p = 623

+    -7s - 5p = -517

             2p = 106

               p = 53

Ans:

Step-by-step explanation:

Let the age of oldest neighbour be x

let the age of youngest neighbour be x-30

According to question,

x+28+x-30 = 80

or, 2x +28-30=80

or,2x+28=80+30

or, 2x=110-28

or, 2x=82

or, x=82/2 = 41

Therefore, The age of oldest neighbour is 41 years

& The age of youngest neighbour= x-30 = 41-30 = 11 years!

By solving a system of equations we will see that the best pair to buy is A and C.

Here we have 3 potatoes, A, B, and C. Let's use these variables to define the weight of each potato.

Then, from the given information, we know that:

A + C = 500g

B + C = 400g

A + B = 300g

Then we have a system of equations, to solve it, first we isolate one of the variables in one of the equations. I will isolate A on the first one:

A + C = 500g

A  = 500g - C

Now we can replace that in the third equation, now we have:

B + C = 400g

500g - C + B = 300g

Now we do the same thing, this time I will isolate C.

C = 400g - B

Let's replace this on the other equation:

500g - (400g - B) + B = 300g

500g - 400g + 2*B = 300g

100g + 2*B = 300g

B = (300g - 100g)/2 = 100g

So potato B weighs 100g.

We can use that to find the weight of the other two:

C = 400g - B = 400g - 100g = 300g

A  = 500g - 300g = 200g

He wants 200g of potato, so he should buy one pair that includes potato A, which weight exactly 200g. And to get the most of his money, he should buy the pair that contains potato A and that weighs more. So the best pair will be A and C.

If you want to learn more about systems of equations, you can read:

https://brainly.com/question/13729904

The area shaded in green is 864 cm²

Similar figures, corresponding angles are congruent and the sides are ratio of each other. Therefore,

AB / PQ = CD / RS

30 / 10 = 24 / RS

30RS = 240

RS = 240 / 30

RS = 8 cm

let find the height of trapezium PQRS.

AB / PQ  = 36 / h

30 / 10 = 36 / h

30h = 360

h = 360 / 30

h = 12 cm

Therefore,

area of the green portion = area of ABCD - area of PQRS

Therefore,

area of ABCD = 1 / 2(24 + 30)36 =  1 / 2 (54)36 = 1944 / 2 = 972 cm²

area of PQRS = 1 / 2(10 + 8)12 = 1 / 2(18)12 = 216 / 2 = 108 cm²

Area of the green portion = 972 - 108 = 864 cm²

learn more on trapezium here: https://brainly.com/question/11961445

Step-by-step explanation:

7C4=7!/((7-4)!*4!)

=7!/(3!*4!)

=7*6*5*4!/3!*4!

=7*6*5/3!

=7*6*5/3*2*1

=7*5

=35

There are 35 different groups of 4 flowers can Simon choose.

Combinations are mathematical operations that count the number of potential configurations for a set of elements when the order of the selection is irrelevant. You can choose the components of combos in any order. Permutations and combinations can be mixed up.

We have,

A client asked him to select 4 of the 7 available flower options.

So, the number of combination for 4 flowers is

C(7, 4)

= 7!/ 4! (7-4)!

= 7 x 6 x 5 x 4!/ 4! x 3!

= 7 x 6 x 5/ 3x 2

= 35

Thus, there 35 different ways.

Learn more about Combination here:

https://brainly.com/question/13387529

#SPJ3

Answer: its A

Step-by-step explanation:

Answer:

2x+12

Step-by-step explanation:

First multiply the numbers without variables:

3x4=12

Next put the equations together:

2x+12

Hence, the correct answer is 2x+12

Answer:

2x + 12

Step-by-step explanation:

2X

3×4

[tex]2x + 12 [/tex]

keeping in mind that parallel lines have exactly the same slope, let's check for the slope of the equation above

[tex]y=\stackrel{\stackrel{m}{\downarrow }}{4} x-4\qquad \impliedby \qquad \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}[/tex]

so we're really looking for the equation of a line whose slope is 4 and passes through (-2 , 0)

[tex](\stackrel{x_1}{-2}~,~\stackrel{y_1}{0})\qquad \qquad \stackrel{slope}{m}\implies 4 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{0}=\stackrel{m}{4}(x-\stackrel{x_1}{(-2)}) \\\\\\ y=4(x+2)\implies y=4x+8[/tex]

Answer:

[tex]the \: whole \: week \: \frac{6}{6} = 24 \\ monday \: and \: tuesday \: \\ \frac{2}{6} + \frac{3}{6} = \frac{5}{6} \\ thursday \\ \frac{6}{6} - \frac{5}{6} = \frac{1}{6} \\ 24 \times \frac{1}{6} = 4[/tex]

Answer:

s=10×t+12×-2×t

s=-2+10+12×2t

s=-2+22×2t

s=20×2t

t=10

s=92

Answer:

Compete Risk Free with $100,000 in Virtual Cash

Have prices been going up or down recently? In a seller’s market properties will likely be somewhat overpriced, and in a buyer’s market properties are apt to be underpriced. It all depends on where the market currently sits on the real estate boom-and-bust curve.

pa intindi nalang. :}

Answer:

a)  13/10

b) [tex]y+15=\dfrac{13}{10}(x-5)[/tex]

c) [tex]y+2=\dfrac{13}{10}(x-15)[/tex]

d) Both equations are [tex]y=\dfrac{13}{10}x-\dfrac{43}{2}[/tex] so represent the same line

e) [tex]-\dfrac{43}{2}[/tex] °F  ⇒ y-intercept

Step-by-step explanation:

a)  Choose two ordered pairs from the table: (5, -15) and (15, -2)

Let [tex](x_1,y_1)[/tex] = (5, -15)

Let [tex](x_2,y_2)[/tex] = (15, -2)

Use the slope formula to find slope: [tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\implies m=\dfrac{-2+15}{15-5}=\dfrac{13}{10}[/tex]

b)  Use point-slope with (5, -15)

[tex]\implies y-y_1=m(x-x_1)[/tex]

[tex]\implies y+15=\dfrac{13}{10}(x-5)[/tex]

c)  Use point-slope with (15, -2)

[tex]\implies y-y_1=m(x-x_1)[/tex]

[tex]\implies y+2=\dfrac{13}{10}(x-15)[/tex]

d)

[tex]\implies y+15=\dfrac{13}{10}(x-5)[/tex]

[tex]\implies y=\dfrac{13}{10}x-\dfrac{43}{2}[/tex]

[tex]\implies y+2=\dfrac{13}{10}(x-15)[/tex]

[tex]\implies y=\dfrac{13}{10}x-\dfrac{43}{2}[/tex]

Therefore, they represent the same line

e) when x = 0:

[tex]y=\dfrac{13}{10}(0)-\dfrac{43}{2}=-\dfrac{43}{2}[/tex] °F

Represents the y-intercept on the graph

Answer:

True

Step-by-step explanation:

3 1/3 is the same as 3 2/6

2/6 can be simplified to 1/3

nothing moves with the 3

3 2/6 = 3 1/3

1 1/2 is the same as 1 3/6

3/6 can be simplified down to 1/2

1 doesn't change

1 1/2 = 1 3/6

3 1/3 + 1 1/2 = 3 2/6 + 1 3/6 is infact true

Answer:

1024 or A

Step-by-step explanation:

64 x4 is 256 x4 it's a 1024

Answer: See below

Step-by-step explanation:

30% * 50

= 30/100 * 50

= 15

Therefore, 30% of the integers between 1 and 50 are in the range 1 to 15

So the random integer generated is in this range, that is, less than or equal to 15, then the weather must be simulated to be rainy.

This would mean that the chance of rain on each day is 30% (if the computer generates the random number consistently)

Answer:

[tex]\huge\boxed{\bf\:\boxed{\mathfrak{2}}\:cans\:each}[/tex]

Step-by-step explanation:

We need to find the number of cans of food each cat in the animal shelter gets per day.

Given,

So,

Number of cans for each cat:

= Total number of cans / Total number of cats

= 20/10

= 2 cans each

[tex]\rule{150}{2}[/tex]

Answer:

The surface area of a cylinder is the surface area of rectangular piece of paper as you roll it into a cylinder

and the surface area of the base and top areas:

Assume that you had a rectangular piece of paper with the long side h, and short side w, let h be the height of the cylinder as you roll it, the surface area generated is the circumference of the circle with radius r multiplied by the height = 2 ¶ r h . The area of the top and bottom circular bases is 2 ¶ r2

The total surface area = 2 ¶ r h + 2 ¶ r2  = 2 ¶ r ( h+ r ) to express r in terms of w , w = 2 ¶ r the width of the rectangle equal to the circumference of the circle , then the total surface area = w ( h+ r )

but r = w / 2 ¶ , the surface area = w(h+w/ 2¶) = (wh+ w2/2¶)

Step-by-step explanation:

Answer:

wag Po lagi umasa sa brainl.

Answer:

8

Step-by-step explanation:

12.8π=πrl

12.8=1.6*l. (π=πcancel)

l=12.8/1.6

l=8

Answer:

3/8 seems to be the most relevant answer