In an experiment, a ball is drawn from an urn containing 7 orange balls and 12 red balls. If the ball is orange, three coins are tossed. Otherwise two coins are tossed. How many elements of the sample space will have a orange ball ?

the answer is -14

hope this helps   : )

Answer:

B

Step-by-step explanation:

hope this helps

Answer: 7/12

Explaintion: Write at least 20 characters to explain it well.

To find out how much 250 envelopes would cost, set up a proportion using the given information that 100 envelopes cost 70 cents. Cross-multiply and solve for the unknown cost, which is $1.75.

To find out how much 250 envelopes would cost, you can use the concept of proportions. Since 100 envelopes cost 70 cents, you can set up a proportion to find the cost of 250 envelopes: 100/70 = 250/x, where 'x' represents the unknown cost. Cross-multiplying, you get 100x = 70 * 250. Dividing both sides by 100, you find that x = 175.

Therefore, 250 envelopes would cost 175 cents.

In decimal form, 175 cents is equal to $1.75.

Answer: [tex]64.36^{\circ}[/tex]

Step-by-step explanation:

According to the question,

PQ ║ RS

And, PQ and RS are cut by the same transversal CD.

Then, By the alternative interior angle theorem,

The alternative interior angles made by the transversal CD on parallel lines PQ and RS must be congruent.

Thus, [tex]\angle PXY\cong \angle XYS[/tex]

⇒ [tex]m\angle PXY = m\angle XYS[/tex]  ( by the property of congruent angles )

Here  [tex]m\angle PXY = 64.36^{\circ}[/tex]  

⇒ [tex]m\angle XYS = 64.36^{\circ}[/tex]

Answer:

The correct answer is c.

Step-by-step explanation:

Given the equation

[tex]ax^{2}+bx+c=0[/tex]

The quadratic equation solves the values of ''x'' which satisfy the original equation (In the equation I replace ± by the symbol |):

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

The solutions of [tex]4x^{2}+x=-3[/tex] are the same that the solutions of [tex]4x^{2}+x+3=0[/tex]

With [tex]a=4\\b=1\\c=3[/tex] we replace this in the quadratic equation ⇒

[tex]\frac{-1|\sqrt{(1)^{2}-4(4)(3)}}{(2)(4)}[/tex]  ⇒

[tex]\frac{-1|\sqrt{1-48}}{8}[/tex] ⇒

[tex]\frac{-1|\sqrt{-47}}{8}[/tex]

Given that [tex]i^{2}=-1[/tex] (imaginary numbers property)

[tex]\frac{-1|\sqrt{47i^{2}}}{8}=\frac{-1|i\sqrt{47}}{8}[/tex]

The solutions are [tex]\frac{-1+i\sqrt{47}}{8}[/tex]

and [tex]\frac{-1-i\sqrt{47}}{8}[/tex]

The correct answer is c.

Answer: C

Step-by-step explanation: I just took the test and got it right <3

The correct answer is:

D) The amount a person pays for gas compared with the number of gallons purchased

Explanation:

A constant rate of change means that for every x, y increases the same amount.

In the situation "The amount a person pays for gas compared with the number of gallons purchased ," the independent quantity, or x-value, is the number of gallons, and the dependent quantity, or y-value, is the amount paid.  Since gas has a set price per gallon, for every gallon purchased, the total amount paid goes up the same amount.  This means it has a constant rate of change.

Answer:

The sequence is arithmetic

Step-by-step explanation:

we know that

In an arithmetic sequence, the difference between consecutive terms is always the same and is called common difference

In this problem we have

[tex]3,9,15,21,...[/tex]

Let

[tex]a1=3, a2=9,a3=15,a4=21[/tex]

[tex]a4-a3=21-15=6[/tex]

[tex]a3-a2=15-9=6[/tex]

[tex]a2-a1=9-3=6[/tex]

The sequence is arithmetic

The common difference is equal to [tex]6[/tex]

Answer:

Slope-Intercept Form states that in the equation of a straight line y=mx+b the slope is the number represented by m that is multiplied on the x, and b is the y intercept i.,e the point where line cut the vertical  y-axis.

Given equation: 5x+2y=3              ......[1]

To convert this equation into slope intercept form;

Subtraction Property of equality states that you subtract the same number from both sides of an equation.

Subtract 5x from both sides in equation [1];

[tex]5x+2y-5x=3-5x[/tex]

Simplify:

[tex]2y=3-5x[/tex] or we can write this as;

[tex]2y=-5x+3[/tex]                 ......[2]

Division property of equality states that you divide the same number from both sides of an equation:

Divide by 2 from both sides of an equation in [2]

[tex]\frac{2y}{2} =\frac{-5x+3}{2}[/tex]

On simplify:

[tex]y=-\frac{5}{2}x+\frac{3}{2}[/tex]

Therefore, the given equation in slope intercept form is: [tex]y=-\frac{5}{2}x +\frac{3}{2}[/tex]

Answer:

D on edge

Step-by-step explanation:

Answer:

[tex]10 ft^2[/tex]

Step-by-step explanation:

We are given that

Length of soccer field=336 feet

Width of soccer field=210 ft

Width of soccer table=2.5 feet

We have to find the area of soccer table which is similar to soccer field in size.

Let x be the length of soccer table.

We know that when two figures are similar then ratio of their corresponding sides are equal.

[tex]\frac{336}{x}=\frac{210}{2.5}[/tex]

[tex]x=\frac{336\times 2.5}{210}=4[/tex]

Length of soccer table=4 ft

Area of soccer table=[tex]length\times breadth[/tex]

Area of soccer table=[tex]4\times 2.5=10 ft^2[/tex]

Hence , the area of soccer table=[tex]10 ft^2[/tex]

The slope of the curve x²y-xy²=4 is defined everywhere except for points where x = 2y. This conclusion is reached by using implicit differentiation and the product rule to find the derivative (slope), and then determining where the slope is undefined.

To find where the slope of the curve is defined for the equation x²y-xy²=4, we first need to find the derivative of the equation. The derivative will give us the slope of the tangent line at a specific point. This process involves using the Product Rule of differentiation. The Product Rule states that the derivative of two functions multiplied together is the first function times the derivative of the second function plus the second function times the derivative of the first function.

For the given equation, we first need to rewrite it in the form: y = f(x). However, as y cannot be easily expressed solely as a function of x in this case, we will need to use implicit differentiation. Implicit differentiation assumes that y is a function of x, even if it's not explicitly stated. By using the product rule, we get 2xy + x² × (dy/dx) - y² - 2xy × (dy/dx) = 0; simplifying this, we get (x² - 2xy) × (dy/dx) = y² - 2xy. So dy/dx = (y² - 2xy) / (x² - 2xy).

Thus, the slope of the curve is defined wherever the denominator, x² - 2xy, does not equal zero, since division by zero is undefined. Hence, we need to solve x² - 2xy ≠ 0. Solving this inequality, we find that the slope of the curve is defined for all (x,y) except where x = 2y.

https://brainly.com/question/32664841

#SPJ3

The value of [tex]m[/tex] is [tex]2[/tex].

Given:

The given equations are:

[tex]y=mx-6[/tex]        ...(i)

[tex]8x-4y=12[/tex]         ...(ii)

To find:

The value of [tex]m[/tex] that will create a system of parallel lines with no solution.

Explanation:

The slope-intercept form of a line is:

[tex]y=mx+b[/tex]           ...(iii)

where, [tex]m[/tex] is the slope and [tex]b[/tex] is the [tex]y[/tex]-intercept.

The slope of line (i) is [tex]m[/tex].

Equation (ii) can be rewritten as:

[tex]-4y=-8x+12[/tex]

[tex]y=\dfrac{-8x+12}{-4}[/tex]

[tex]y=2x-3[/tex]

The slope of this line is [tex]2[/tex].

We know that the slopes of parallel lines are equal. So, [tex]m=2[/tex].

Learn more:

https://brainly.com/question/14874024

Final answer:

To find all cube roots of -125i in polar form, convert them to a+bi form by expressing -125i in polar form, finding the cube roots, and converting them to a+bi form.

Explanation:

To find all the cube roots of -125i in polar form and convert them to a+bi form, follow these steps:

Express -125i in polar form: -125i = 125∠-90°.

Find the cube roots by taking the cube roots of the magnitude and adding multiples of 360°/3 to the argument.

The cube roots of -125i in a+bi form are 5∠-30°, 5∠90°, and 5∠210°, which correspond to -2.5-4.33i, 0+5i, and 2.5-4.33i respectively.

The simplest radical form of the expression 5√28 + √63 will be 29√7.

If the power of the variable "a" is b/c.

Then the simplest radical form of the expression will be

[tex]\rm \left ( a \right )^{\rm \frac{b}{c}} = \rm \sqrt[\rm c]{\rm a^b}[/tex]

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The expression is given below.

⇒ 5√28 + √63

Simplify the expression, then we have

⇒ 5√28 + √63

⇒ 5√(4 x 7) + √(9 x 7)

⇒ 5 x 4√7 + 9√7

⇒ 20√7 + 9√7

⇒ 29√7

The simplest radical form of the expression 5√28 + √63 will be 29√7.

More about the simplest radical form link is given below.

https://brainly.com/question/7440652

#SPJ2