21 people travelled to a meeting.
12 used a train.
6 used a car.
7 did not use a train or a car.
Some used a train and a car.


Two people are chosen at random from those who used a train.
Find the probability that both these people also used a car.

Answer:

Rewrite the equation as x+xyz=wx+xyz=w.

x+xyz=wx+xyz=w

Subtract xx from both sides of the equation.

xyz=w−xxyz=w-x

Divide each term by xzxz and simplif

Answer:

Step-by-step explanation:History(H),Economics(E),Literature(L)

1a).To find History(H) only is

H only =H-HE-HL+HEL

H only =60-30-16+10=24

b).E only=50-30-22+10=8

c). L only=48-22-16+10=20

2).no of candidates who sat for the exam is 24+8+20=52

"In an examination of final year students of a school, 60 offered history, 50 offered economics, and 48 literature." The Vein diagram is attached below.

A Venn diagram is a diagram that utilizes circles to demonstrate the similarities and contrasts between two or more items.

Generally, the equation for History students only is mathematically given as

HisO=His-His Eco-His Lie+HisEcoLie

Therefore

HisO=60-30-16+10

HisO=24

EcoO=50-30-22+10

EcoO=8

LieO=48-22-16+10

LieO=20

In conclusion, candidates that sat for at least one subject

At least HEL= 24+8+20

At least HEL=52

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Answer:

[tex]\frac{1}{p-s}[/tex]

Step-by-step explanation:

[tex](p+s)(p^2-s^2)^{-1}[/tex]

[tex](p+s)\frac{1}{(p^2-s^2)}[/tex]

[tex]\frac{p+s}{p^2-s^2}[/tex]

[tex]\frac{p+s}{(p+s)(p-s)}[/tex]

[tex]\frac{1}{p-s}[/tex]

Answer:

-7x - 36

Step-by-step explanation:

x X 2 - 9 x X - 36

2x - 9x - 36

Answer:

( x + 3 ) ( x - 12 )

Step-by-step explanation:

x^2 - 9x - 36

= x^2 + 3x - 12x - 36

= x ( x + 3 ) - 12 ( x + 3 )

= ( x + 3 ) ( x - 12 )

Step-by-step explanation:

Y=4(5)-9

=11

you must follow the formula given

Answer:

y=11

Step-by-step explanation:

y=mx-b

mx-b=y

4 * 5 - 9 = y

20 - 9 = y

11 = y

Answer:

2/3 is your answer

Step-by-step explanation:

Hope this helps

P.S.(from k12)

The slope of the line is 2/3.

Here,

Graph of a line on coordinate plane. Axes are labeled x and y.

Three points are with ordered pairs (2, 3), (5, 5), and (8, 7) and the line passes through these three points.

We have to find the slope of the line.

What is the slope of the line?

Let two points (x₁, y₁) and (x₂, y₂) are on the line, then slope of the line is calculated as;

[tex]m = \frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

Now,

Three points are passes through the line are (2, 3), (5, 5), and (8, 7).

To find the slope, Let any two point from three given points.

Let (2, 3) and (5, 5) on the line.

Hence, Slope is calculated as,

⇒ [tex]m = \frac{5-3}{5-2} = \frac{2}{3}[/tex]

Therefore, The slope of the line is 2/3.

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Answer:

Sana makatulong

Answer: So group 3 of 16 contains 2 are boys . Means 16 +16 are tow groups are of boys. Then remaining 16 are girls. It completed the all conditions. 2/3 class retio. Total 48 students and 16 girls.

Step-by-step explanation:

Hope this helps!

Answer:

2/5

Step-by-step explanation:

40 and 100 can both be divided by 20. 40 divided by 20 equals 2 and 100 divided by 20 equals 5

Answer:

2/5 (0.4)

Step-by-step explanation:

We can reduce this by first looking at the fraction. [tex]\frac{40}{100}[/tex]

We can first divide by 10 on both sides to get a better number: [tex]\frac{4}{10}[/tex]

We can simplify both by 2 since thats another common number: [tex]\frac{2}{5}[/tex]

That is the most we can go to!

If this answer helped, consider marking this as brainliest!

Cheers!

I dont know how to answer number 12 but number 13 is the first one 3x + 15 = 17

Answer:

D

Step-by-step explanation:

Amanda's unit rate would be

s=50m

while Mary's is

s=60m

60-50 is 10, meaning the answer would be D.

Mary saves $10 more than Amanda every month.

Hope this helps! :)

Hi there!

We can find an equation that models Amanda's savings using the equation:

y = km, where:

k = rise / run (Amount/months)

Plug in a set of values from the table:

k = 100/2 = 50

y = 50m

We know that Mary saves y = 60m dollars a month, so we can determine the correct comparison by plugging in a value of 1 month into both equations:

Amanda:

y = 50(1) = $50

Mary:

y = 60(1) = $60

The difference between Mary's and Amanda's savings is $60 - $50 = $10, so each month, Mary saves $10 more than Amanda.

The correct answer is D.

Answer:

340,000

Step-by-step explanation:

Answer:

340,000

Step-by-step explanation:

in 340,250, you would round down because the 2 in ,250 is less than 5, and you can only round up if the number is more than 5.

Answer:

Between 8 and 9

Step-by-step explanation:

Square root of 75 is 8.66025403784

Answer:

1.2 or 1.22 (Doesn't matter)

Step-by-step explanation:

Answer:

y = -8

Step-by-step explanation:

When y = -2/5, the slope is 0.

Seeing this, we can make the equation the same as the y-value of the point given.

Hence,

y = -8

Feel free to mark this as brainliest! :D

Answer:

38-2(5) = 28

So the temperature would be 28 degrees celsius

Answer: Teperature at 5PM will be 28°C

Ok so at 12 its 38°C

And it dcreases at 2°C an hour, we need to find the teperature at 5 o clock.

The number of hours between 12 and 5 mutiplied by 2 will give us the trail in temperature and then subtracting the trail i temperature witht the temperature a 12 will give us the teperature at 5 o clock.

SO,

hours between 12 PM and 5 PM is 5 hours

As, the temperature decreases at a uniform rate of 2°c per hour

⇒5×2°C

⇒10°C

Now the temperature at 5 PM will be 38°C-10°C=28°C

Answer:

percentage cost of airfare change= (difference in cost / original cost )×100

% age = (250-180/ 250) ×100

=70/250 ×100

7000/250

= 28%

Answer:

4

Step-by-step explanation:

she multiplied 6x24, got 144 and said 1/144

Answer:

3

Step-by-step explanation:

Answer:

Step-by-step explanation:

2/5 và -1/2

Answer:

2d=180based on the 3d parallel =to 0xyc⁶=12(0)

Domain in numerical order: {-7, -1, 0, 1}

Range in numerical order: {-1, 0, 1, 2, 7}

Which number is not part of the range of this relation? = -7

Hope this helps!

Answer:

Loading,please wait...

Step-by-step explanation:

Answer:

-2, -1 ,2 ,2 ,2.22.25 that's the answer

Answer: B.no

Step-by-step explanation:

To figure this out, plug (1, -4) into the equation y=-2x. 1 is the x value, so we plug it into the x. -4 is the y value, so we plug it into the y spot. In the end we get -4=-2(1). Is this true? No, it isn't. Therefore it is not an answer