Emily buys 14 balloons 3 are red 4 are white and the rest are blue what is the ratio of blue balloons to the total number of balloons?

answer:

B and C are correct.

explanation:

[tex]\hookrightarrow \sf x^2-5x+5[/tex]  where ax² + bx + c

\\ Thus we can determine a = 1, b = -5, c = 5 \\

using quadratic equation:

[tex]\rightarrow \sf x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{2a} \ \ when \ \ ax^2 + bx + c = 0[/tex]

[tex]\hookrightarrow \sf x_{1,\:2}=\dfrac{-\left(-5\right)\pm \sqrt{\left(-5\right)^2-4\cdot \:1\cdot \:5}}{2\cdot \:1}[/tex]

[tex]\hookrightarrow \sf x=\dfrac{5+\sqrt{5}}{2},\:x=\dfrac{5-\sqrt{5}}{2}[/tex]

Answer:

B and C

Step-by-step explanation:

[tex]x^2-5x+5=0[/tex]

⇒ a = 1, b = -5, c = 5

Using quadratic formula:

[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac} }{2a}[/tex]

[tex]\implies x=\dfrac{5\pm\sqrt{(-5)^2-4\cdot 1 \cdot 5} }{2\cdot 1}[/tex]

[tex]\implies x=\dfrac{5\pm\sqrt{5}}{2}[/tex]

Answer:

Check the pic

Answer:

B

Step-by-step explanation:

solve for W

subtract 8/5 from both sides

then multiply by 5

hope this was helpful

Answer:

$115

Step-by-step explanation:

Because the add does that like answer

I wait that you understand

We will get the mass of each chocolate sphere, and the cost of 140 of these is $368.56

A sphere of radius R has a volume:

V = (4/3)*3.14*R^3

The mass of a sphere of chocolate will be given by the volume times the density, then one ball of chocolate has a mass:

M = (4/3)*3.14*(2cm)^3*(1.31 g/cm^3) = 43.88 g

And we know that the cost is of $0.06 per gram, the cost for 140 of these spheres is:

cost = 140*(44.88 g)*$0.06 = $368.56

If you want to learn more about density, you can read:

https://brainly.com/question/1354972

Answer:

option 1 is true. -1/2=-0.5

Answer:

-1/2

Step-by-step explanation:

-5/6 + 6/18

Simplify the second fraction by dividing the top and bottom by 3 ( then we will have like denominators)

-5/6 + 2/6

Combine the numerators since the denominators are the same

-3/6

Divide the top and bottom by 3

-1/2

Answer:

1. Rate needed 9/6; Unit rate is 1.5/1; 1.5 cans of white paint are needed for each can of blue.

2. rate needed = 12/6; unit rate = 2/1;  Need 2 cups of water for every scoop of fruit mix.

3. 70 minutes

Step-by-step explanation:

1.  Set up a ratio

3white/2blue = xwhite/6blue

3/2 = x/6

cross multiply 2x = 18; x = 9

rate needed = 9/6

Unit rate is 1.5/1 (divide 3 by 2 or 9 by 6 to get unit rate_

2. 3/1.5 = x/6

1.5x = 18; x = 12

rate needed = 12/6

unit rate = 2/1

3. Set up a ratio.

3.5/.25 ( 1/4=.25)

3.5/.25 = x/5

.25x = 3.5(5)

.25x = 17.5

x = 70 minutes

Answer:

1) Rate: 3/2

  Unit Rate: 1.5/1

  Interpretation: Every 1 can of blue paint used requires 1.5 cans of white    

                           paint

 Solution: 9

Answer:

22 - 3 × 6 + 52 = 56

Step-by-step explanation:

Multiply

3×6 = 18

22-18+52

Add and subtract

22-18 = 4

4+52 = 46

Answer:

56

Step-by-step explanation:

To solve we must use the order of operations which is PEMDAS.

P-Parenthesis

E-Exponents

M-Multiplication

D-Division

A-Addition

and S-Subtraction

First we multiply -3 and 6 which gives us -18. So our equation is now 22-18+52.

Next we do addition. -18+52 is 34, plus 22 gives us 56.

Hope this helps :)

Answer:

The Answer can be A. 12ft2 ,16ft2 and 28 ft2

as well as B. 8ft2,16ft2 and 24ft2

a(2)+b(2)=c(2) a(2)+b(2)=c(2)

12+16=28 8 +16=24

Your answer is C.Both A and B

Hope you have a great day!

Answer: 2/9, 11/18, 2/3, 5/6

Step-by-step explanation:

2/3 = 0.6666...

2/9 = 0.2222...

5/6 = 0.8333...

11/18 = 0.61111...

Explanation:

Basically a line goes on forever in both directions. A ray only goes off forever in one direction. If we glue together two rays that point in complete opposite directions (eg 1 points north, the other points south) then we form a line.

A line segment is a piece of a line. It doesn't go on forever in either direction. It has 2 endpoints and has a set fixed length. If you know the coordinates of each endpoint, you can use the distance formula to find that length.

Answer:

y=(-3/2)x+16

Step-by-step explanation:

Answer:

The correct response will be "whether or not the viewer will buy the product".

Step-by-step explanation:

Using the hypergeometric distribution, it is found that the probabilities are given as follows:

a) 0.2059 = 20.59%.

b) 0.5294 = 52.94%.

c) 0.2647 = 26.47%.

The formula is:

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

The parameters are:

In this problem, the parameters are as follows: N = 17, k = 8, n = 2.

Item a:

This probbility is P(X = 2), hence:

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]

[tex]P(X = 2) = h(2,17,2,2) = \frac{C_{8,2}C_{9,0}}{C_{17,2}} = 0.2059[/tex]

Item b:

This probbility is P(X = 1), hence:

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]

[tex]P(X = 1) = h(1,17,2,2) = \frac{C_{8,1}C_{9,1}}{C_{17,2}} = 0.5294[/tex]

Item c:

This probbility is P(X = 0), hence:

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]

[tex]P(X = 0) = h(0,17,2,2) = \frac{C_{8,0}C_{9,2}}{C_{17,2}} = 0.2647[/tex]

More can be learned about the hypergeometric distribution at https://brainly.com/question/24826394

Answer:

what is this russian math?

Step-by-step explanation:

Answer: 3.5 Miles

Step-by-step explanation: It would take her 8.5 min to run one mile because 51/6 is 8.5. Then I divided 30 by 8.5 to get 3.52, which is rounded to 3.5 miles in 30 min

Hope this helps :)

Answer:

(a-10)^2 = 10^2

Step-by-step explanation:

a^2-20a=0

a^2-20a+100=100

(a-10)^2=100

Answer:

15 hours

Step-by-step explanation:

Step 1. $250-$100=$150

Step 2. $150÷$10=15 hours

To check answer:

$10x15(hours)=$150

$150+$100=$250

Answer:

15 hours

Explanation:

So start by taking 100 away from 250, to get 150. now divide 150 by 10. 15

Given parameters:

Normal selling price off the bicycle = $440

Discount fraction  = [tex]\frac{3}{4}[/tex]

Unknown:

Sale price of the bicycle = ?

Solution:

The discounted sale price of the bicycle;

                      = normal selling price x discount fraction

Input the parameters and solve;

           Discounted sale price of the bicycle  =[tex]\frac{3}{4}[/tex] x 440

                                                                        = 3 x 110

                                                                        = $330

The discounted sale price of the bicycle is $330

Answer:

1/4*2/5=(1*2)/(4*5)

= 2/ 20

= 1/10

So 1/4* 2/5=1/10

Answer:

1/10

Step-by-step explanation:

1)Draw the fractions.

2) Since you are basically dividing, divide 2

into 4 and your answer should be 2, cross

out 2 and put I because 2 into 2 goes one time,

and cross out 4 and put 2 because 2 into 4 goes 2 times

3) Multiply from across and you will get your answer

12 tickets --

120/10= 12

Answer:

$12

Step-by-step explanation:

well 12 * 10 = 120 so 12 is 1 ticket

Answer:

AR 27-10 supplements the MCM and is the ... available. The installation Trial Defense Service office will provide a military lawyer. If the. 3-1 ... away or assaulting you, enlist others to help.

Answer:

A U B = {2,3,4, 5}

Step-by-step explanation:

Union means join together

A U B = {2,3,4, 5}

Answer:

C) 196 cu. units

Step-by-step explanation:

Volume = lwh/3

             = 7 x 7 x 12 / 3

              =  588/3

              = 196

The volume of a square pyramid is 196 cubic units.

Volume is the measure of the capacity that an object holds.

Formula to find the volume of the object is Volume = Area of a base × Height.

From the given figure, side of square base is 7 units and height is 12 units.

We know that, the volume of square based pyramid =a²h/3.

Now, volume of a pyramid = 1/3 ×7²×12

= 49×4

= 196 cubic units

Therefore, the volume of a square pyramid is 196 cubic units.

To learn more about the volume visit:

https://brainly.com/question/13338592.

#SPJ7

Answer:

3

Step-by-step explanation:

eq.

1/5(12×5/6+5)

=1/5×(10+5)

=1/5×15

=3

Answer:

3

Step-by-step explanation:

Answer:

which class

Step-by-step explanation:

which class are you in and which subject do u want

Answer: its c. positive relationship; as the speed decreases, the distance increases.

Step-by-step explanation:

Answer:

a

  [tex]f(x)= 100 [x - 0.2050][/tex]

b

 [tex]P(X > 0.2125) =  0.25 [/tex]

c

  [tex]a = 0.2140[/tex]

d

Mean [tex]\mu  = 0.21[/tex]

Variance  [tex]\sigma ^2  =  0.0000083 [/tex]

Step-by-step explanation:

From the question we are told that

   The thickness of photoresist follows a uniform distribution

So

     [tex]X\   \~{}\ U \{  0.2050 , 0.2150 \}[/tex]

Generally the probability density function  is mathematically represented as

[tex]F(x) =  \left \{  \frac{1}{ 0.2150 - 02050} , 0.2150< x < 0.2150[/tex]

=>  [tex]F(x) =  \left \{   100 , 0.2150< x < 0.2150[/tex]

Generally the cumulative distribution function is

   [tex]f(x) =  \int\limits^{x}_{- \infty} {F(x)} \, dx[/tex]

Here [tex]- \infty[/tex] means the lower limit which in this case is  02050

So

    [tex]f(x) =  \int\limits^{x}_{0.2050} {100} \, dx[/tex]

    [tex]f(x) =  100 \int\limits^{x}_{0.2050} {1} \, dx[/tex]

=>   [tex] f(x)=100 [ x ] | \left \ x} \atop {0.2050}} \right.[/tex]

=>   [tex]f(x)= 100 [x - 0.2050][/tex]

Generally the proportion of wafers that exceeds 0.2125 is mathematically represented as

     [tex]P(X > 0.2125) =  1 - F(0.2125)[/tex]

=>  [tex]P(X > 0.2125) =  1- 100[0.2125 - 0.2050][/tex]

=>   [tex]P(X > 0.2125) =  0.25 [/tex]

Generally the thickness which is exceeded by 10% of the wafers is mathematically represented as

       [tex]P(X  > a ) =  0.10[/tex]

=>    [tex]1 - F(a) = 0.10[/tex]

=>     [tex]1 -100 (a - 0.2050) = 0.10[/tex]

=>     [tex]100(a -0.2050) =  0.90[/tex]

=>   [tex]a - 0.2050 =  0.009[/tex]

=>   [tex]a = 0.2140[/tex]

Generally the mean is mathematically represented as  

     [tex]\mu  =  \frac{ 0.2050 -0.2150 }{2}[/tex]

=>   [tex]\mu  = 0.21[/tex]

Generally the variance  is mathematically represented as

    [tex]\sigma ^2  =  \frac{1}{12} [0.2150 - 0.2050]^2[/tex]

=>  [tex]\sigma ^2  =  0.0000083 [/tex]