A class has 16 boys and 24 girls.Of the 16 boys ,3 are left handed.Of the 24 girls, 2 are left handed.If a student is chosen at random to clean the whiteboard ,find the probability that the student is left handed.What is the answer:1/8 1/9

Answers

Answer 1

Answer:

1/8

Step-by-step explanation:

you add 16 and 24 which is 40

there are 5 ppl who are left handed

which is 5/40 which is simplify to 1/8

hope this helps

Answer 2

Answer: go on quizlet but my guess is 2/3

Step-by-step explanation: i guessed tbh


Related Questions

6.247 * 10 to the twelfth power in standard form

Answers

Answer: 6,247,000,000,000

Step-by-step explanation:

Here we have the number:

6.247x10^12 and we want to write this in standard form.

You can see that we have a 10^12, this means that we need to move the decimal dot 12 places to the right, if there is not a decimal to the right, we add a zero.

6.247x10^12 = 62.47x10^11 = 624.7x10^10 = 6,247x10^9 = 62,470x10^8 and so on.

eventually, the standard form is:

6.247x10^12 = 6,247,000,000,000

So we end with 12 digits after the six.

Find the value of x in each case:

Answers

You can set up an equation for the large triangle made up of the smaller ones by knowing that the total interior angles must sum to 180°. We also can know that angle RPN is also 78° by the geometric law of alternate interior angles. Therefore you know that the angles to sum up are 2x, 2x (which comes from x + x), and 78°.

2x + 2x + 78 = 180

4x + 78 = 180

4x = 102

x = 25.5°

*note, there are many ways to solve this

Find the common difference of the sequence shown. 1/6, 1/3, 1/2 , 2

Answers

Answer:

1/6

Step-by-step explanation:

sequence should be 1/6,1/3,1/2,2/3

common difference=1/3-1/6=2/6-1/6=1/6

or 1/2-1/3=(3-2)/6=1/6

or c.d.=2/3-1/2=(4-3)/6=1/6

Answer:

The answer is 1/6.

Step-by-step explanation:

I got it right when I did it.

Now let’s practice what you have learned.


Solve the equation.
4y – 4 = 28

Answers

Answer:

y=8

Step-by-step explanation:

4y-4=28

4y=28+4

4y=32

y=32/4

y=8

now plug in 8 for y and check the equation true:

4y-4=28

4*(8)-4=28

32-4=28

28=28

So,  y is equal to eight 8

Answer:

y = 8

Step-by-step explanation:

4y - 4 = 28

take -4 to the equal side, which will change and become +4

so, it will be; 4y = 28 + 4

4y = 32

divide both sides by the number next to the unknown(y), which is 4

y = 8

resolve the following into factor ab+ac-ad​

Answers

Answer:

  a(b+c-d)

Step-by-step explanation:

Each term has a factor of "a", so that can be factored out. The remaining factor cannot be factored any further.

  ab +ac -ad = a(b +c -d)

Answer:

a(b + c - d)

Step-by-step explanation:

'a' is common to all three terms of the given expression.  Thus, the expression in factored form is a(b + c - d).

Consider the function f(x) = x2 + 12x + 11. x-intercepts: 0 = x2 + 12x + 11 0 = (x + 1)(x+ 11) y-intercept: f(0) = (0)2 + 12(0) + 11 What are the intercepts of the function? The x-intercepts are . The y-intercept is

Answers

Answer:

The coordinates of the x-intercepts are;

(-1, 0) and (-11, 0)

The coordinate of the y-intercept is;

(0, 11)

Step-by-step explanation:

The given function is f(x) = x² + 12·x + 11

The x-intercept is at f(x) = 0 which gives;

0 = x² + 12·x + 11 which has been factored as (x + 1)(x+11) such that we have;

(x + 1)(x+11) = 0

x  = -1, or x = -11

The y-intercept occurs at x = 0, we therefore have;

f(0) = (0)² + 12·(0) + 11 = 11

Therefore, we have f(0) = 11 = Y

Given that at the x-intercept, y = 0, then the coordinates of the x-intercepts are;

(-1, 0) and (-11, 0)

Given that at the y-intercept, x = 0, then the coordinate of the y-intercept is;

(0, 11).

Answer:

man up there is right

Step-by-step explanation:

Hiya can someone please help me on my maths ratio work?!?

Arthur is organising his collection of DVDs. He has 152 altogether
The ratio of comedy films to action to horror is 6:8:5

How many of each DVD does he have?

Answers

Answer : comedy = 48 dvd, action = 64 dvd, horror = 40 dvd

Explanation:
Find comedy dvd:
152 x 6/(6 + 8 + 5) = 152 x 6/19 = 48
Find action:
152 x 8/19 = 64
Find horror
152 - (64 + 48) = 152 - 112 = 40

Bill wants to be a marine biologist when he grows up. His entire room is ocean-themed, so he is painting his bed frame blue to match. He estimates that he will need 5 cups of paint, but the hardware store only sells paint in quarts. If Bill buys 2 quarts of paint, how many cups will he have left?

Answers

Answer:

3 cups

Step-by-step explanation:

Bill needs 5 cups of paint for his bed frame.

The store only sells in quarts and so he buys 2 quarts of paint.

Let us convert to cups to see how many he bought:

1 quart = 4 cups

2 quarts = 2 * 4 = 8 cups

Bill bought 8 cups of paint. Therefore, the number of cups he has left is:

8 - 5 = 3 cups

He will have 3 cups left.

What is 3 ÷ 5/6 ? Show your work

Answers

Answer:

3 3/5 or 18/5

Step-by-step explanation:

When we divide by fractions, we multiply by the reciprocal of the fraction.

So, 3 ÷ 5/6 is

3*6/5

=18/5

=3 3/5

Have a great day!

Answer:

18/5

3 3/5

3.6

Step-by-step explanation:

3 ÷ 5/÷6

3 × 6/5 → 18/5 (can be 18/5, 3 3/5 or 3.6)

Hope this helps! :)

Which equation can be used to solve for c?


c = (5)cos(35o)
c = StartFraction 5 Over cosine (35 degrees) EndFraction
c = (5)sin(35o)
c = StartFraction 5 Over sine (35 degrees) EndFraction

Answers

Answer:

c = 5 / cos 35

Step-by-step explanation:

To find c we use cosine

cos ∅ = adjacent / hypotenuse

c is the hypotenuse

BC is the adjacent

cos 35° = 5 / c

c = 5 / cos 35

Hope this helps you

Answer:

the answer is B. C= 5 / cos(35)

Step-by-step explanation:

i took the test

what is the coordinates of A and Q

Answers

Answer:

Coordinate of A: -9

Coordinate of Q: 9

Step-by-step explanation:

1 - 10 = -9

1 + 8 = 9

58. 122. 61. None of the choices are correct

Answers

Answer:

C. 61

Step-by-step explanation:

Two sides are equal, so the triangle is an isosceles triangle.

Both base angles are equal.

Angles in a triangle add up to 180 degrees.

58 + x + x = 180

58 + 2x = 180

2x  = 122

x = 61

What is the answer please help! make sure to explain. thanks!! Mrs. Anderton is giving a test in her third-period class. She has decided to record the amount of time that each student takes to finish the test (in minutes) and compare that to the grade each student receives on the test (out of 100). A plot of her results is below. Which of the following does this situation represent? A. both a relation and a function B. a function only C. neither a relation nor a function D. a relation only

Answers

Answer:

A

achievements

Step-by-step explanation:

What is the mean of this data set? If necessary, round your answer to the
nearest tenth.
20, 23, 32, 36, 41, 43, 44, 45, 47, 54, 55, 59, 61, 63, 66

Answers

Answer:

A

Step-by-step explanation:

Answer:

A. 45.9

Step-by-step explanation:

the sum of the data values(numbers), divided by the number of data values (in your case 15)

You are picking an order calling for 72 packs of utility knife blades. There are six packs in a carton. How many cartons do you ship

Answers

Answer:

12

Step-by-step explanation:

simple math

1. The perimeter of the given triangle PQR is
cm
P
7cm
3cm
R
4cm
O 16
28
26
65

Answers

Answer:

No, it is not possible to construct a triangle with lengths of its sides as 4 cm, 3 cm and 7 cm because here we see that sum of the lengths of two sides is equal to third side i.e., 4+3 = 7. As we know that, the sum of any two sides of a triangle is greater than its third side, so given statement is not correct.

Step-by-step explanation:

What is the value of Y?

Answers

Answer: 57 = y

Step-by-step explanation: To find the value of y in this problem, we use the exterior angle theorem which states that the measure of the exterior angle of a triangle is equal to the sum of the measures of the remote interior angles.

So in the diagram shown, the exterior angle, 114,

is equal to the sum of the remote interior angles, y + y.

So we have 114 = y + y.

Solving from here, first combine like terms on the right side.

So we have 114 = 2y.

Now divide both sides by 2 to get 57 = y.

it’s 57 ma because of the 144 and if you \ you will get it .

Expand the following using the Binomial Theorem and Pascal's Triangle. Please show work.

(2x+3)^5​

Answers


The answer is:
32x^5+ 240x^4+ 720x^3+ 1080x^2+810x+243

vertex of y=-2(x-3)^2+2

Answers

Answer:

vertex = (3, 2 )

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

y = 2(x - 3)² + 2 ← is in vertex form

with vertex = (3, 2 )

Rectangle A,B, C, D is graphed in the coordinate plane. The following are the vertices of the rectangle: A(-8, -6), B(-3,-6), C(-3, -4), D(-8, -4). Given these coordinates, what is the length of side AB of this rectangle?

Answers

Answer:

AB= 5 units

Image of coordinates is shown in the attachment.

Which best explains why the equation 3x + 8 = 3x - 5 has no solutions?
O A. The equation is not true for any value of x.
B. The equation has a variable on both sides.
O C. The equation is true for any value of x.
SUE

Answers

Answer:A is the ans

Step-by-step explanation:

Feel pleasure to help u

Find the equation of the line through point (−2,−2) and parallel to 3x+4y=12. Use a forward slash (i.e. "/") for fractions (e.g. 1/2.

Answers

Answer:

3x + 4y = - 14

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

3x + 4y = 12 ( subtract 3x from both sides )

4y = - 3x + 12 ( divide all terms by 4 )

y = - [tex]\frac{3}{4}[/tex] x + 3 ← in slope- intercept form

with slope m = - [tex]\frac{3}{4}[/tex]

Parallel lines have equal slopes, thus

y = - [tex]\frac{3}{4}[/tex] x + c ← is the partial equation

To find c substitute (- 2, - 2) into the partial equation

- 2 = [tex]\frac{3}{2}[/tex] + c ⇒ c = - [tex]\frac{7}{2}[/tex]

y = - [tex]\frac{3}{4}[/tex] x - [tex]\frac{7}{2}[/tex] ← in slope- intercept form

Multiply through by 4 to clear the fractions

4y = - 3x - 14 ( add 3x to both sides )

3x + 4y = - 14 ← in standard form

The shorter leg of a 30°−60°−90° triangle is 4 in. Find the hypotenuse and the other leg. Answer: The length of the hypotenuse is ________ in. The length of the other leg is __________in.

Answers

Answer:

The length of the hypotenuse is 8 inches; the length of the longer leg is 4√3 inches.

Step-by-step explanation:

Note that tan 60 degrees = (length of longer leg) / (length of shorter leg), or

                tan 60 degrees = (length of longer leg) / 4 in.

Thus, (length of longer leg) = (4 in)(tan 60 degrees)

                                              = (4 in) [√3/1] = 4√3 in

Also, cos 60 degrees = (adjacent side) / (hypotenuse.  We want to find the hypotenuse and thus solve this equation for it:

(hypotenuse) = (adjacent side) / (cos 60) = (4 in)( 2/1 ) = 8 in

The length of the hypotenuse is 8 inches; the length of the longer leg is 4√3 inches.

Express (i) 1.4191919.... (ii) 0. 001 in the form p/q, where p and q are integers and q ≠ 0.

Answers

Answer:

so confusing.. but I think I have an idea.. p and q are integers equal to 0

Step-by-step explanation:

If c+1/d=5 , what is the value of 30d/2c+2

Answers

Answer:

3

[tex]d\in R,\hspace{5}d\neq 0[/tex]

Step-by-step explanation:

You can solve for any variable. From the first equation, let's solve for c :

[tex]\frac{c+1}{d} =5\\\\c+1=5d\\\\c=5d-1[/tex]

Now, replace the value of c into the other equation:

[tex]\frac{30d}{2c+2} \\\\\frac{30d}{2(5d-1)+2} \\[/tex]

Using distributive property

[tex]\frac{30d}{10d-2+2} =\frac{30d}{10d} =3[/tex]

However, keep in mind that this is true for:

[tex]d\in R,\hspace{5}d\neq 0[/tex]

Nick, Paul and krutika share £80 in a ratio 1:1:2 how much money does each person get

Answers

Answer:

Step-by-step explanation:

x + x + 2x = 80

4x =80

X = 20

Nick = 20

Paul = 20

Krutika = 40

If the number of bacteria in a colony doubles every 10 hours and there is currently a population of 300 bacteria, what will the population be 20 hours from now?

Answers

Answer:

1200 bacteria

Step-by-step explanation:

20 hours divided by 10 hours = 2, so it will be doubled two times.

300 times 2 for the first doubling = 600

600 times 2 for the second doubling = 1200

match each pair of angle measures of a triangle with the remaining angle measure

Answers

Answer:

Since the angles of a triangle always add up to 180 degrees.

180 - (28+87) = 65 degrees

180 - (96+51) = 33 degrees

180 - (16+102) = 62 degrees

Answer:

6 and 102 = 62

119 and 23 = 38

96 and 51 = 33

28 and 87 = 65

Step-by-step explanation:

just did mine :D

in the following APs,find the missing terms in the boxes
1). 5_,_,9/2
2).-4,_,_,_,_,6
3)._,38,_,_,_,-22​

Answers

Answer:

see explanation

Step-by-step explanation:

The n th term of an AP is

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

(1)

Given a₁ = 5 and a₄ = [tex]\frac{9}{2}[/tex] , then

5 + 3d = [tex]\frac{9}{2}[/tex] ( subtract 5 from both sides )

3d = - [tex]\frac{1}{2}[/tex] ( divide both sides by 3 )

d = - [tex]\frac{1}{6}[/tex]

add - [tex]\frac{1}{6}[/tex] to each term

5,  [tex]\frac{29}{6}[/tex],  [tex]\frac{14}{3}[/tex],  [tex]\frac{9}{2}[/tex]

(2)

Given a₁ = - 4 and a₆ = 6, then

- 4 + 5d = 6 ( add 4 to both sides )

5d = 10 ( divide both sides by 5 )

d = 2

Add 2 to each term

- 4,  -2,  0,  2,  4,  6

(3)

Given a₂ = 38 and a₆ = - 22, then

a₁ + d = 38 → (1)

a₁ + 5d = - 22 → (2)

Subtract (1) from (2) term by term

4d = - 60 ( divide both sides by 4 )

d = - 15

Substitute d = - 15 into (1)

a₁ - 15  = 38 ( add 15 to both sides )

a₁ = 53

Thus

53,  38,  8,  - 7,  - 22

Helppp!!!! please!!!

Answers

Answer:

             18

Step-by-step explanation:

8 faces and 12 vertices means hexagon as its base

That means 6+6 edges of its bases and 6 side edges.

6+6+6=18  

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