There are 30 names in a hat. If two names are picked without replacement, which expression shows the probability that Jack and Jill will be picked?​

it is B because the x value does not repeat twice

Answer:

the one in the middle

Step-by-step explanation:

why because if you see the x axis when you go over it the one that has a funtion dosent have two of the same number but the one that dosent haves two of the same numbers

Answer:

x = 15

Step-by-step explanation:

Using the Altitude on Hypotenuse theorem

( leg of large Δ )² = (part of hypotenuse below it ) × ( whole hypotenuse )

Thus

x² = 9 × (9 + 16) = 9 × 25 = 225 ( take the square root of both sides )

x = [tex]\sqrt{225}[/tex] = 15

Answer:

x-axis(independent) = 1.5

y-axis(dependant) = 75ft

Step-by-step explanation:

An INDEPENDENT variable is the variable yourself can not change, in this case its time. The DEPENDANT variable is the variable that is changed to affect data you are solving for. Idk if this helps you at all to understand for future references but i hope it did!

Answer:

16

Step-by-step explanation:

You add 7, 4 and 5 to get 16.

Answer:

6x^2-6

Step-by-step explanation: algebra

Answer:

66

Step-by-step explanation:

Plug in 5 for x

16 + 10(5)

16 + 50 = 66

Answer:

66

Step-by-step explanation:

So we have the expression:

[tex]16+10x[/tex]

To find the value of the expression when x is 5, substitute 5 for x:

[tex]=16+10(5)[/tex]

Multiply:

[tex]=16+50\\[/tex]

Add:

[tex]=66[/tex]

Answer: 33 math problems.

Step-by-step explanation:

Let x = Number of math problems

y= Number of history problems

According to the question , we have

[tex]3y+6=x\ \ \ \ \ (i)\\\\ x+y=42\ \ \ \ (ii)[/tex]

We can rewrite (i) as [tex]x-3y=6[/tex]    (iii)

Now, subtract (iii) from (ii), we get

[tex]y-(-3y)=42-6\\\\\Rightarrow\ y+3y=36\\\\\Rightarrow\ 4y=36\\\\\Rightarrow\ y= \dfrac{36}{4}\\\\\Rightarrow\ y=9[/tex]

Put this in (i), we get

[tex]x=3(9)+6 = 27+6=33[/tex]

Hence, you have to complete 33 math problems.

Answer:

8.4

Step-by-step explanation:

8 is a whole njmber, so it stays the same.

2/5 is equivalent to .4, so you put that at the end.

Your answer is 8.4 Hope this helps!

The decimal number is 8.4.

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

8(2/5)

= (8 x 5 + 2) / 5

= (40 + 2) / 5

= 42/5

= 8.4

Thus,

The decimal number is 8.4.

Learn more about expressions here:

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Hello, please consider the following.

[tex]x^2-6x=-5\\\\\text{We add 5 to both sides of the equation}\\\\x^2-6x+\boxed{5}=-5+\boxed{5}=0\\\\\text{The answer to a) is then c = 5.}\\\\\text{We complete the square by noticing that }\\\\x^2-6x=x^2-2*3*x=(x-3)^2-3^2\\\\\text{So the main equation becomes.}\\\\x^2-6x+5=(x-3)^2-9+5=0\\\\\text{We simplify.}\\\\(x-3)^2-4=0[/tex]

[tex]\text{We add 4 to both sides.}\\\\(x-3)^2=4=2^2\\\\\text{The answer to b) is then}\\\\\boxed{(x-3)^2=4}\\\\\text{We take the root.}\\\\x-3=\pm2\\\\<=> x =3+2=5 \ \ or \ \ x=3-2=1\\\\\text{So the solutions are.}\\\\\Large \boxed{\sf \bf \ \ x=5 \ \ or \ \ x=1 \ \ }[/tex]

Thank you.

Answer: The length of [tex]\overline{NP}[/tex] is 10 units.

Step-by-step explanation:

We are given that,

Point O is on line segment [tex]\overline{NP}[/tex] .

Then, [tex]\overline{NP}=\overline{NO}+\overline{OP}[/tex]   (i)

Since we have given that OP=8 units and NO=2 units .

Now we will substitute these values in (i), we will get

[tex]\overline{NP}=8\ units+2\ units\\\\\Rightarrow\ \overline{NP}=10\ units[/tex]

Hence, the length of [tex]\overline{NP}[/tex] is 10 units.

Answer:

  82°

Step-by-step explanation:

The given angles are vertical angles, so have the same measure:

  (10x +8) = (12x -10

  18 = 2x . . . . . . . . . . add 10-10x

  9 = x

  10x +8 = 10(9) +8 = 98

So, angles 1 and 3 measure 98°. Angles 2 and 4 are the supplement of this, so ...

  ∠2 = 180° -98° = 82°

Answer:

82

Step-by-step explanation:

Formula: (10x + 8)Angle 1 = (12x - 10)Angle 3

12x - 10x= 8 -(-10)

2x=18

9

you only need to insert the x value (9) into one equation because angles 1 and 3 are CONGRUENT.

(10 x 9) + 8 = ?

90 + 8= 98

and to solve the question, 180 - 98= 82.

82 is the answer

Answer:

Options 2), 4), and 5) are correct

Step-by-step explanation:

Rock the House Digital Designs

Elegant Home Architects

===========================

Answer options:

1)The expression 50h represents the total charge for Rock the House Digital Designs.

2)The expression 75h represents the total charge for Elegance Home Architects.

3)The expression 500 + 75h + 50h represents the total amount the Nelsons will spend working drawings of their new house plans.

4)If the Nelsons hire the design firm for 15 hours, then Elegance Home Architects will be cheaper.

5)If the Nelsons hire the design firm for 25 hours, then Rock the House Digital Designs will be cheaper.

Answer:

3 is the answer

mutiply and open bracket minus each other

Answer:

See Explanation

Step-by-step explanation:

The options are not given; however, the solution is as follows;

[tex]3y = 27x[/tex]

Required

Determine relationships with the same constant of proportionality (k)

[tex]3y = 27x[/tex]

Divide both sides by 3

[tex]\frac{3y}{3} = \frac{27x}{3}[/tex]

[tex]y = \frac{27x}{3}[/tex]

[tex]y = 9x[/tex]

The relationship between y, x and k is:

[tex]y = kx[/tex]

Comparing [tex]y = kx[/tex] with [tex]y = 9x[/tex]; then

[tex]k = 9[/tex]

Hence, any of the options with k=9 answers the question.

Take for instance:

[tex]2y = 18x[/tex]

Dividing both sides by 2 gives

[tex]y = 9x[/tex] and hence; [tex]k = 9[/tex]

Answer:

The answers are A B and C

Step-by-step explanation:

I just got it right

Answer:

Step-by-step explanation:

4

unit digit=4

cube=64

Given :

All the natural numbers below 1000 that are multiples of 3 or 5 .

To Find :

The sum of all the multiples of 3 or 5 below 1000.

Solution :

Max multiple of 3 is 999 .

Max multiple of 5 id 995 .

So , number of multiple of 3 is :

[tex]999=a+(n-1)d\\\\999=3+3(n-1)\\\\n=333[/tex]

Similarly for 5 .

[tex]995=a+(n-1)d\\\\995=5+5(n-1)\\\\n=199[/tex]

Now , sum of all multiple of 3 is given by :

[tex]S_3=\dfrac{n}{2}(2a+(n-1)d)\\\\S_3=\dfrac{333\times (2\times 3+332\times 3)}{2}\\\\S_3=166833[/tex]

Also , sum of all multiple of 5 is :

[tex]S_5=\dfrac{n}{2}(2a+(n-1)d)\\\\S_5=\dfrac{199\times (2\times 5+198\times 5)}{2}\\\\S_5=99500[/tex]

Therefore , total sum :

[tex]T=S_3+S_5\\\\T=166833+99500\\\\T=266333[/tex]

Now , there are some common number which we add two times like :

15 , 30 , 60 ......

So , we should subtract the sum of all multiple of 15 from T .

Now , sum of all multiple of 15 is 33165 .

So ,

[tex]T=266333-33165\\\\T=233168[/tex]

Therefore , the  sum of all the multiples of 3 or 5 below 1000 is 233168 .

Answer: i just add 2 integers as i go

Step-by-step explanation: like for that problem i would go -2 +-8 is -10 then do -10 --5 which is -5 then do -5 +3 which is -2.

Answer:

It is on floor 2

Step-by-step explanation:

15-18=-3

-3+5=2

hope this helped :)

Answer:

it is on the 2nd floor

Step-by-step explanation: this is because it started at 15, then went down 18: 15-18

     -3

then it went up 5: -3+5  or 5-3

                                to end up at the 2nd floor

Answer: heat energy

Step-by-step explanation: not really a math question- but i'll explain it anyways. heat is the transfer of energy, and a hand warmer transfers energy to your hand, making it warm.

Answer:

Heat

Step-by-step explanation:

It generates heat that's why its a hand warmer.

Answer:

£9318.96

Step-by-step explanation:

18000×0.7×0.86^(2)=£9318.96

Answer:

Function families are groups of functions with similarities that make them easier to graph when you are familiar with the parent function. They're useful because if you know the parent function, you can figure out another function from there

Step-by-step explanation:

Answer:

x = -11

Step-by-step explanation:

Answer:

x = -11

Step-by-step explanation:

9+x=−2

Step 1: Simplify both sides of the equation.

x+9=−2

Step 2: Subtract 9 from both sides.

x+9−9=−2−9

x=−11

Answer:

Step-by-step explanation:

7619 / 7

= 1088 remainder 3.

Answer:

31 people

Step-by-step explanation:

Hamzah soccer team is trying to raise the amount of $620 to travel to a tournament in Florida

The soccer team decide to organise a pancake breakfast

Each person that attends the breakfast must pay $20

Therefore the amount of people needed to attend the breakfast to raise $620 can be calculated as follows

= 620/20

= 31

Hence 31 people need to be in attendance inorder to raise $620

Answer:

see below

Step-by-step explanation:

8- 2x - 5- 13x = 6

Combine like terms

-15x+3=6

Subtract 3 from each side

-15x+3-3=6-3

-15x = 3

Divide each side by -15

x = 3/-15

x = -1/5

Check

8 - 2(-1/5) -5 -13(-1/5) = 6

8 + 2/5 -5 +13/5 = 6

3 + 15/5 = 6

3+3=6

6=6

Answer:

A

Step-by-step explanation:

x+5x if x =5 replace the variable with the key (x=5)

so now the problem reads

5+5*5

acording to oder of operations u do multipcaion 1rst

5+25

30

so ur answer is 30

in the end step by step looks like this

x+5x if x =5

5+5*5

5+25

30

Answer:

Step-by-step explanation:

If you have one of angle's sides by 0° at protractor then the other side crosses the measure of angle.

The measure of ∠JHG is 70°

An angle is formed when two straight lines or rays meet at a common endpoint. The common point of contact is called the vertex of an angle. The word angle comes from a Latin word named 'angulus,' meaning “corner.”

Given: The protractor has a line that coincides with the line that makes an angle of 70° with the base and thus the ∠JHG =70

Hence, The measure of ∠JHG is 70°

Learn more about angles here:

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Answer:

u=5

Step-by-step explanation:

-29 = 5u + 6 - 12u        

-6             -6

-35 =5u - 12u

         -7u

-35 = 7u

-35 divided by 7 to get u by itself equals 5

therefore u =5

Step-by-step explanation:

Reorder the terms:

6+5u+ -12u= -29

u =5

Answer:

[tex]\Large \boxed{\displaystyle y=\sqrt{\frac{z \cdot w}{x}}}[/tex]

Step-by-step explanation:

[tex]\displaystyle \frac{x}{w} =\frac{z}{y^2 }[/tex]

Cross multiplication.

[tex]x \cdot y^2 =z \cdot w[/tex]

Dividing both sides by [tex]x[/tex].

[tex]\displaystyle \frac{x \cdot y^2 }{x} =\frac{z \cdot w}{x}[/tex]

[tex]\displaystyle y^2 =\frac{z \cdot w}{x}[/tex]

Taking the square root of both sides.

[tex]\displaystyle \sqrt{y^2 } =\sqrt{\frac{z \cdot w}{x}}[/tex]

[tex]\displaystyle y=\sqrt{\frac{z \cdot w}{x}}[/tex]