A bag contains 6 red marbles, 2 green, and 4 blue marbles. You randomly pick a marble and then pick a second marble, returning the marbles to.the bag each time. What is the probability of pulling a blue marble first and then a red marble.second?

Answer:

Amount of 5% solution = 5.7 Litres

Amount of 40% solution = 4.3 Litres

Step-by-step explanation:

First, of all, let x be the amount of 5% solution used

Since, the scientist needs 10 L of solution, then;

Let 10 - x be the amount of 40% solution used

Now, we are told that she needs 10 L of a 20% acid solution.

This means that;

5%x + 40%(10 - x) = 20%(10).

Simplifying this gives;

0.05x + 0.40(10 - x) = 0.20 × 10

Expanding the bracket gives;

0.05x + 4 - 0.4x = 2

0.4x - 0.05x = 4 - 2

0.35x = 2

x = 2/0.35

x ≈ 5.7 litres

Thus, she will need to mix 5.7 liters of the 5% solution.

Since 10 - x be the amount of 40% solution used , then;

the amount of 40% solution = 10 - 5.7 = 4.3 litres

Answer:

8

Step-by-step explanation:

Remember median is the middle. What you have to do is put them in oder from least to greatest. Then go from the left to right and cross one out until you get to the midde.

Answer:

$0.20

Step-by-step explanation:

Note that the graph does not have a vertical intercept other than (0, $0); it shows a proportional relationship.  For each $1 increase in the cost of the meal, the tip increases by $0.20.

The equation of the line is:

[tex]y = 0.2x[/tex]

The slope is of $0.2, which means that the tip increases $0.20 for each dollar spent on the meal.

The equation of a line, in slope-intercept form, is:

[tex]y = mx + b[/tex]

In which:

In this problem:

[tex]m = \frac{2 - 0}{10 - 0} = 0.2[/tex]

The equation of the line is:

[tex]y = 0.2x[/tex]

x is the cost of the meal, y is the tip, thus, the slope is of $0.2 means that the tip increases $0.20 for each dollar spent on the meal.

A similar problem is given at https://brainly.com/question/22566209

Answer:

No Real Solutions

Step-by-step explanation:

So we have:

[tex]x-2\sqrt{x-3}=0[/tex]

First, determine the domain restrictions. The expression under the radical cannot be less than 0. Therefore:

[tex]x-3\geq 0\\x\geq 3[/tex]

Therefore, our final answers must be greater than or equal to 3:

Now, going back to the original equation, subtract x from both sides:

[tex]-2\sqrt{x-3}=-x[/tex]

Now, square both sides:

[tex]4(x-3)=x^2[/tex]

Distribute:

[tex]4x-12=x^2[/tex]

Subtract 4x and add 12 to both sides:

[tex]0=x^2-4x+12[/tex]

This isn't factor-able. Let's use the quadratic formula. a is 1, b is -4 and c is 12:

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

Substitute:

[tex]x=\frac{4\pm\sqrt{(-4)^2-4(1)(12)}}{2(1)}[/tex]

Simplify the radical:

[tex]x=\frac{4\pm\sqrt{-32}}{2(1)}[/tex]

The number under the radical is negative. In other words, there are no real solutions.

Answer:

6.83 is the answer

Step-by-step explanation:

Answer:

351.68 cm^2

Step-by-step explanation:

Radius= 8cm

Vertical length (l)=6cm

therefore, Total surface area of a solid cone

= [tex]\pi r^{2} +\pi rl[/tex]

[tex]\pi r( r+l)\\3.14 *8(8+6)\\25.12(14)\\351.68[/tex]

Total Surface Area of the solid cone= 351.68 cm^2

Answer:

352cm²

Step-by-step explanation:

formula = πr² + πLr

L = 6cm

r = 8cm

π = 3.14

3.14 × (8²) + 3.14 × 6 × 8

200.96 + 150.72

= 351.68

to the nearest cm² = 352cm²

Answer:

Given data, first determine which is the independent variable, x, and which is the dependent variable, y. Enter the data pairs into the regression calculator. Substitute the value for one variable into the equation for the regression line produced by the calculator, and then predict the value of the other variable.

Step-by-step explanation:

Answer:

Sample Answer: Given bivariate data, first determine which is the independent variable, x, and which is the dependent variable, y. Enter the data pairs into the regression calculator. Substitute the value for one variable into the equation for the regression line produced by the calculator, and then predict the value of the other variable.

Step-by-step explanation:

Got it right on the quiz :)

Answer:

The approximate length of one side of the canvas (approximate to the nearest hundredth inch)= 10.63

Step-by-step explanation:

There are two ways to solve this problem . One is the use of the calculator and the other is the use of the fraction.

Now the square has equal sides length = breadth .

So we can simply find the length on one side by taking square root with the help of the calculator .

So when you press the symbol of square root after entering the number 113 we get the answer 10.63

Square = Length * breadth

Square = Length * length

Square = L²

One side =√ L²= L so √113= 10.63

The approximate length of one side of the canvas (approximate to the nearest hundredth inch)= 10.63

Answer:

He drove 63 miles in one day

Step-by-step explanation:

151.2/2.4=63

Answer:

40 points

Step-by-step explanations

divide 50 by 5 to get the number of answers

you get 10 answers so then you subtract 2 and get 8

times that by 5 and you get the answer 40

Answer:

x=17

Step-by-step explanation:

It's a right angle, therefore it has to equal 90.

90=22+4x

90-22=68

68 divided by 4 is 17

Answer:

X=5.75

Step-by-step explanation:

4x+22=45

4x=23(because you subtract 22 from both sides)

23/4=5.75

Answer:

295.936

Step-by-step explanation:

First find out what 544^2 is.  That is 295,936.  There are 100 ml in 1 liter.  So divide 295,936 by 100 to see how many liters are in 295,936 ml.  

295,936÷100=295.936

Answer:

D

Step-by-step explanation:

The two triangles are similar by the property side angle side.

If two objects are having the same shape then they will be termed as similar. So in mathematics, if two figures have the same shapes, lines or angles then they are called similar.

In geometry, two figures or objects are said to be congruent if their shapes and sizes match, or if one is the mirror image of the other. The meaning of congruency is that the two shapes are similar as well as equal in size.

Here in the triangles, the angle is equal and the sides are dilated by factor two from 18 to 9. It means that the sides are similar to each other and the angle is the same.

To know more about similarities follow

https://brainly.com/question/24184322

#SPJ2

Answer:

SOHCAHTOA.

TOA=opposite/adjacent.

Tan45=100/h.

h tan45=100.

h×1=100.

h=100m

Answer:

[tex]\Huge \boxed{\mathrm{100 \ meters}}[/tex]

Step-by-step explanation:

The base of the right triangle created is 100 meters.

The angle between the base and the hypotenuse of the right triangle is 45 degrees.

We can use trigonometric functions to solve for the height of the tower.

[tex]\displaystyle \mathrm{tan(\theta)=\frac{opposite}{adjacent} }[/tex]

Let the height be x.

[tex]\displaystyle \mathrm{tan(45)}=\frac{x}{100}[/tex]

Multiplying both sides by 100.

[tex]\displaystyle 100 \cdot \mathrm{tan(45)}=x[/tex]

[tex]100=x[/tex]

The height of the tower is 100 meters.

Answer:

y = 11

Step-by-step explanation:

We use the definition of Supplementary Angles and Adjacent Angles.

Step 1: Set up equation 1 (Definition of Supplementary Angles)

5x - 4 +7x - 8 = 180

Step 2: Solve for x

12x - 4 - 8 = 180

12x - 12 = 180

12x = 192

x = 16

Step 3: Plug in x

5(16) - 4

80 - 4

76°

Step 4: Set up equation 2 (Definition of Supplementary Angles)

76 + 9y + 5 = 180

Step 5: Solve for y

9y + 81 = 180

9y = 99

y = 11

Answer:

i think its Stephen Hawking

Step-by-step explanation:

Answer:

Born in Boston in 1898, William James Sidis made the headlines in the early 20th century as a child prodigy with an amazing intellect. His IQ was estimated to be 50 to 100 points higher than Albert Einstein's. He could read the New York Times before he was 2.

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex](-2,3) =(x_1,y_1)\\\\Slope=m= -6\\\\[/tex]

Substitute values into point slope form

[tex]y -y_1 =m(x-x_1)\\y -3=-6(x - (-2))\\y -3 =-6(x+2)\\y -3 =-6x -12\\y =-6x -12+3\\y =-6x -9[/tex]

Answer:

y=-6x-9

Step-by-step explanation:

You can write the equation in slope intercept form.

y=mx+b

m is the slope and b is where the line intersects the y axis.

If the slope is -6,

y=-6x+b

We can find b by trying all different options until we get to the line that intersects (-2,3)

Answer:

[tex]\huge \boxed{x=180}[/tex]

Step-by-step explanation:

15% of x = 27

[tex]\sf 15\% \cdot x =27 \\\\\\ 0.15x=27 \\\\\\ Divide \ both \ sides \ by \ 0.15. \\\\\\ \frac{0.15x}{0.15} = \frac{27}{0.15} \\\\\\ x = 180[/tex]

15% of 180 is 27.

Answer:

x = 180

Step-by-step explanation:

15% of x = 27

x = 27 / 0.15

x = 180

Answer:

0 (zero)

Step-by-step explanation:

15mn + 5(m – 3mn) – 5m

=15mn+5m-15mn-5m

=15mn-15mn+5mn-5mn

=0

Answer:

3n add 1

Step-by-step explanation:

15 mn add 5m - 15mn - 5m

or, 5m( 3n add 1 ) - 5m( 3n add 1)

or, ( 5m - 5m ) ( 3n add 1 )

or, 3n add 1

c, d, and e. My assignments gave me 3 answers.

Answer:

L= 16 m

W= 12 m

Step-by-step explanation:

let us define the parameters of the parallelogram

let the length be L

and the width be W

given that the W= L-4

perimeter= 72 meters

We know that the perimeter of a parallelogram is given as

[tex]P=2L + 2W[/tex]

Substituting W= L-4 for W we have

[tex]72=2L + 2(L-4)\\\\72= 2L+2L-8 \\\\72= 4L-8\\\\4L= 72-8\\\\4L= 64[/tex]

Divide both sides by 4 we have

[tex]L= 64/4\\\\L= 16 m[/tex]

From w= L-4 we can find w by setting L= 16

W= 16-4

W= 12 m

Answer:

A. <ACB

Step-by-step explanation:

When you name an angle with three points, the vertex must be in the middle.

The vertex is B, so B must be in the middle.

Answer: A. <ACB

Answer:

There is 55.9 mL of acid in the solution.

Step-by-step explanation:

We have:

V = 354 mL

%(a): concentration of acid = 15.8 %

Hence, we can find the number of milliliters of acid as follows:

[tex] x = V*\%_{a} [/tex]

[tex] x = 354*\frac{15.8}{100} = 55.9 mL [/tex]

Therefore, there is 55.9 mL of acid in the solution.

I hope it helps you!

Answer:

These are the four correct options are:

White is the most popular in every region.

About 23% of the people in the west have a grey car not green car.

About 17% of the people in the mid west have a grey car

Silver and black are equally popular in the east..

The correct options are shown below:

A bar chart or bar graph is a chart or graph that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. A vertical bar chart is sometimes called a column chart.

According the given Bar graph the following are the correct answers are:

Learn more about bar graph here:

https://brainly.com/question/8644324

#SPJ2

Answers:

25 = 5*5 which is the same as 25 = 5^2

100 = 2*2*5*5 which is the same as 100 = 2^2*5^2

16 = 2*2*2*2 which is the same as 16 = 2^4

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

Explanation:

To find the prime factorization of 25, we divide by prime numbers. We see that 25/2 = 12.5 isn't a whole number, and neither is 25/3 = 8.33 (approx). But 25/5 = 5 is a whole number. The result is a prime number so we can stop here. This shows that 25 = 5*5 = 5^2

------------

We'll do the same for 100 as well. Start with dividing over 2

100/2 = 50

50/2 = 25

we can't do 25/2 as mentioned earlier, but we can say 25/5 = 5

So basically 100 = 2*2*25 = 2*2*5*5 = 2^2*5^2

-------------

The same will happen with 16 as well. We divide by 2 until we arrive at a prime number result

16/2 = 8

8/2 = 4

4/2 = 2

We have three 2's as denominators and that last result 2 is included in the set of prime factors as well to say 16 = 2*2*2*2 = 2^4

-------------

The factor tree for each is shown below. For something like 100, there are a few ways to draw out the tree. The same applies for 16 as well.

Answer:

3.5 tons

Step-by-step explanation:

Divide the pounds for the male by the amount of tons it is.

8000/4 = 2000

This is how many pounds are in one ton.  Divide the weight of the female by this.

7000/2000 = 3.5

The female weighs 3.5 tons.

Answer:

in the intersection region of all the solution in the system.