In a class of 30 students, 21 play an instrument and 8 play a sport. There are 7
students who do not play an instrument or a sport. What is the probability that a
student does not play a sport given that they play an instrument?

Answers

Answer 1

Step-by-step explanation:

The formula for probability is favourable outcome/ Total outcome. So the answer might be 7/30.

Related Questions

The pastor divided the 3,000 circulars among 15 teenagers. How many circulars did each young person receive?
(Write the explanation and answer)

Answers

Each young person received 200 circulars.

3,000/15= 200

Taryn is making a quilt using fabric in the shape of parallelograms that have side lengths of 12 cm and 4.5 cm as shown. She sews two right

triangles to either end of the parallelogram to make a rectangle. The length of OP is 2.5 cm.

What is the length of MN?

O A V2.5 cm

OB. 14 cm

OC 4.5 cm

OD 26.5 cm

OE 7 cm

Answers

Answer:

[tex]MN = \sqrt{14[/tex]

Step-by-step explanation:

Given

[tex]NO = 12[/tex]

[tex]OP = 2.5[/tex]

[tex]OQ = 4.5[/tex]

Required

Find MN

First, we calculate QP using Pythagoras theorem

[tex]OQ^2 = OP^2 + QP^2[/tex]

[tex]4.5^2 = 2.5^2 + QP^2[/tex]

[tex]20.25 = 6.25 + QP^2[/tex]

Collect like terms

[tex]QP^2 = 20.25 - 6.25[/tex]

[tex]QP^2 = 14[/tex]

Take square roots

[tex]QP = \sqrt{14[/tex]

To solve MN, we have:

[tex]MN = OP[/tex]

So:

[tex]MN = \sqrt{14[/tex]

A loading tempo can carry 482 boxes of biscuits weighing 15kg each, whereas a van can carry 518 boxes each of the same weight. Find the total weight (in kg) that can be carried by both the vehicles.

Answers

Answer:

Tempo = 7,230kg

Van = 7,770kg

Step-by-step explanation:

FOR THE TEMPO

boxes of biscuits = 482

Each weight = 15kg each

= 482 x 15kg

= 7,230kg

FOR THE VAN

boxes of biscuits = 518

as written in the question that Each box have the same weight as in the tempo so it is = 15kg Each

= 518 x 15kg

= 7,770kg

Does anyone know the answer for this problem??

Answers

The question is not asking for answer like the other person wrote . It is asking fir the LCD lowest common denominator that both go into which would be:
u^2-2uv+v^2

Someone please help me thank you

Answers

Answer:

x = -8, y = 4

Step-by-step explanation:

3x + 3y = -12 (1)

x + 6y = 16 (2)

Multiply (2) by 3

3x + 18y = 48 (3)

3x + 3y = -12 (1)

Subtract (1) from (3) to eliminate x

18y - 3y = 48 - (-12)

15y = 48 + 12

15y = 60

y = 60/15

y = 4

Substitute y = 4 into (1)

3x + 3y = -12 (1)

3x + 3(4) = -12

3x + 12 = -12

3x = -12 - 12

3x = -24

x = -24/3

x = -8

x = -8, y = 4

Set up a proportion.
What is h?

Answers

Answer:

Decimal:

h = 4.2 ft

Fraction:

[tex]h=4\frac{1}{5}[/tex] ft

Step-by-step explanation:

[tex]\frac{9}{15} :\frac{h}{7}[/tex]

Cross multiply.

h · 15 = 9 · 7

Simplify.

15h = 63

Divide each side by 15.

15h ÷ 15 = 63 ÷ 15

Simplify.

h = 4.2

Determine the volume of the composite figure...

Answers

Composite figures are composed of several geometric shapes and are three-dimensional shapes. The first composite shape is a combination of a rectangular prism and a pyramid. To find the volume of the entire shape you find the volume of each individual shape and add them together.

To find an estimate for π I could...

Answers

Answer:

You could use 3.14 or 22/7

Step-by-step explanation:

It should be what you're asking, if not, tell me and I'll give you another answer.

Answer:

use 22/7 or 355/133, but 355/133 is not very commonly used and is unwieldy.

Step-by-step explanation:

I NEED HELP PLEASE IT WOULD HELP ME ALOT

Answers

Answer:

Step-by-step explanation:

21 is the side opposite the angle you want.

67 is the hypotenuse. Those two sides define the Sin

Sin(theta) = opposite / hypotenuse

Sin(theta) = 21 / 67

Sin(theta) = .313432

theta or x = sin-1(0.313432)

x = 18.27

Sorry, I must have hit the wrong key the first time.

Answer:

18.27˚

Step-by-step explanation:

Help I have like 10 minutes to do this

Answers

Answer:

Step-by-step explanation:

The mean is the average so add up all values of the data points and divide by the amount of data points.

Answer:

Step-by-step explanation:

add all the x's to get the total

Greggory is trying to raise money for his school's football team by selling T-shirts and sweatshirts. The football team will get $3 for each sweatshirt sold and $4 for each T-shirt sold. The rest of the money goes to paying for the items to be sold. Greggory manages to sell a total of 121 items and the team ends up getting $406.

Answers

# of sweatshirts sold = x = 78
# of t-shirts sold = y = 43

We know:
x + y = 121
3x + 4y = 406

Solve the first equation for x in terms of y, then substitute that into the second equation.

x = 121 - y

3(121 - y) + 4y = 406
363 - 3y + 4y = 406
y + 363 = 406
y = 43

Then solve for x

x = 121 - y
x = 121 - 43
x = 78

Check the math:
3(78) + 4(43) = 234 + 172 = 406

1- If Antonio did ten laps in the pool , how many minutes will it take him?

2-Antonia and Maria each swam laps in a pool. Who has the best time per lap.

Answers

1 - 5 min
2- Maria 1 lap take 2 min
Maria has the best time per lap

A field in the shape of a quadrilateral has a perimeter of 166 m. A fence is being built along the field's perimeter. Determine the length of fencing needed for each side of the field.

Answers

Answer:

3x - 4 = 32

2x = 24

5x + 10 = 70

4x - 8 = 40

Step-by-step explanation:

Please find the complete question in the attached image

Perimeter = sum of sides of the quadrilateral

166 = 4x - 8 + 5x + 10 + 2x + 3x - 4

166 = 14x - 2

combine like terms

166 + 2 = 14x

168 = 14x

x = 12

substitute for x in each of the sides

3x - 4 = 3(12) - 4 = 32

2x = 2 x 12 = 24

5x + 10 = 5(12) + 10 = 70

4x - 8 = 4(12) - 8 = 40

A normal distribution has a mean of 75 and a standard deviation of 10 use the standard normal table to find the probability that a randomly selected X value from the distribution is less than or equal to 50
A. -2.5
B. 0.0062
C. 0.9938
D. 2.5

Answers

Answer:

0.006

Step-by-step explanation:

We are actually looking for the area under the standard normal curve to the left of 50. The proper distribution function on my old TI calculator is normalcdf(:

normalcdf(-1000,50,75, 10),

which returns 0.006 (Answer B)

PLEASE HELP pls I know it’s the easiest thing I just could never understand this

Answers

Answer:

I think its 10 pls dont get mad at me if its wrong.

Step-by-step explanation:

if you see x and then 10 you can see they line up

What is the solution set to the inequality 5(x - 2)(x + 4) > 0?
O {xx>-4 and x <2}
O {x| X <-4 or x > 2)
O {x} x <-2 or x > 4)
O {X/ x>-2 or x <4}

Answers

Answer:

{x | x < 2 and x < -4 }

Step-by-step explanation:

Given the inequality 5(x - 2)(x + 4) > 0?

This also means x - 2 < 0 and x + 4<0

For x - 2 < 0

Add 2 to both sides

x - 2 + 2 < 0 + 2

x < 2

Similarlry for x + 4 <0

Subtract 4 from both sides

x+4-4 < 0 -4

x < 0 -4

x < -4

x < 2 and x < -4

Hence the required solution is {x | x < 2 and x < -4 }

I need help understanding this and some answers quick

Answers

Answer:

(x - 8)² = 14

Step-by-step explanation:

Given

x² - 16x + 26 = - 24 ( subtract 26 from both sides )

x² - 16x = - 50

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 8)x + 64 = - 50 + 64

(x - 8)² = 14

how many single bonds would be needed to make an octet?

Answers

Answer: it would be four

Step-by-step explanation:

can someone help me solve this question

Answers

Answer:

Step-by-step explanation:

y=mx+b

m = slope

b = y intercept

m = 5

b = -8

y=5x-8

Answer: y = 5x - 8

Step-by-step explanation:

y = mx + b

m is the slope

b is the y-intercept

M is 5 and B is -8

So, y = 5x - 8

a circle is graphed on a coordinate grid and tgen reflected across the y-axis. if the center of the original circle was located at (x,y). which ordered pair represents the center of the new circle after the transformation

Answers

Answer:

The new center is the point (-x, y)

Step-by-step explanation:

When you reflect a point across the y-axis, the x-coordinate changes to its opposite (additive inverse).

See the attached image for an example.

The circle on the right has center (3, 1). When reflected across the y-axis, the reflected center is (-3, 1).

which inequality is graphed in green

Answers

Answer:

The one on the right. y< -x/2 - 1

sECOND LAST QUESTION PLS HELP DHGIFSTSTSHVJD

Answers

Answer:

sdfdsfsdfsf

Answer:

It A. 96 inches

Hope it helps!

Step-by-step explanation:

please answer fast.

Answers

Answer:

Step-by-step explanation:

EASY GEOMETRY/10 POINTS/WILL MARK AS BRAINLIST
WHICH IS NOT A PYTHAGOREAN TRIPLE

Answers

Answer:

Answer = D.) 9, 12, 16

Step-by-step explanation:

Answer:

[tex]pythagorean : AC^2 = AB^2 + BC^2 \\\\(3,4,5) = 5^2 = 3^2 + 4^2 \\ => satisfies\\\\(5, 12 , 13) = 13^2 = 5^2 + 12^2 \\=> satisfies\\\\(6, 8 , 10) = 10^2 = 6^2 +8^2\\=>satisfies\\\\(9,12, 16) = 16^2 = 9^2 + 12^2 => 256 = 81 + 144 => 256 = 225 \\=> does \ not\ satisfy[/tex]

Find the amplitude and period FAST

Answers

Answer:

Period is pi and the amplitude is 4

Step-by-step explanation:

Hope this helps!

A sports team is building a new stadium on a rectangular lot of land. If the lot measures 7x by 7x and the sports field will be 5y by 5y, how much of the lot will be left over to build bleachers on?

Answers

Answer:

Area of rectangular lot= l * f

Step-by-step explanation:

Area of rectangular lot= l * f=7x*7x = 49x^2

Area of stadium= 5y*5y = 25y^2

Area left of build bleachers = 49x^2 - 25y^2

someone pls help!! NO LINKS AND ONLY ANSWER IF U KNOW!! i’ll report u if u do either. pls explain well too

Answers

Answer:

can u please send the question again with clear picture of diagram?

PLEASE HELP ASAP PLEASE

Answers

Answer:

Step-by-step explanation:

The k is indicative of movement either up or down, while h is indicative of movement that is either right or left. The blue graph moves both to the right and down to get to the position of the red graph. On the blue graph, locate the point (0, 1). That point moves from a y-location of 1 to a y-location of -2, meaning that it moves down 3 units; therefore, the value of k is -3.

1-Mrs. Thomas wrote the expression below on the board.
What is the value of the expression?
11 - (2 x 4) + 2 =

Answers

Answer:

I believe the answer is 10

Answer:

i believe the answer is 6

Step-by-step explanation:

(2×4) = 8 / 11 - 8 = 4+ 2= 6

Which of the following shows that the difference of two irrational numbers can be rational?

See picture for multiple choice. Thank you :)

Answers

Answer:b

Step-by-step explanation: pi is irrational so if you add it to something that becomes irrational

Answer:

Step-by-step explanation:

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In a class of 30 students, 21 play an instrument and 8 play a sport. There are 7 students who do not play an instrument or a sport. What is the probability that a student does not play a sport given that they play an instrument?

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In a class of 30 students, 21 play an instrument and 8 play a sport. There are 7
students who do not play an instrument or a sport. What is the probability that a
student does not play a sport given that they play an instrument?