HELP HELP HELP EASY MATH

Shari has twelve cards, numbered from one to twelve. She randomly draws three cards with replacement. What is the probability that Shari draws an even card and then two odds.

a. 3/8

b. 1/16

c. 1/4

d. 1/8

I think the answer is 3/8.

So, option (a) is the correct answer.

(a) Triangle with lengths of sides 7 cm, 8 cm and 9cm is a right triangle. This is because the Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. In this case, 9^2 = 7^2 + 8^2, which is true, hence the triangle has a right angle.

(b) ABC with AB = 8.7 cm, AC = 7 cm and BC = 6cm can't be determined as it depends on the angles, as the sides are given but the angles are not.

(c) PQR such that PQ = QR = PR = 5cm is an equilateral triangle. This is because in an equilateral triangle all three sides are of equal length.

(d) DEF with D = 90 degrees can't be determined as only the angle is given, we need the length of the sides as well

(e) XYZ with Y = 90 and XY = YZ can't be determined as the angle and the sides are not enough information

(f) LMN with L = 30, M = 70 and N = 80 is not a triangle as the sum of two sides is less than the other side, hence the triangle inequality theorem is violated.

Therefore, Option (a) is the correct answer.

It's worth noting that a triangle can be defined by its three sides as well as by its three angles, but in any case, we need enough information to determine the type of triangle.

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Answer:

The first step is to simplify the double radical.

√√189² = √(189²) = √(189*189) = √(35281)

Now, we simplify the radical by finding the prime factorization of 35281:

35281 = 189² = (189)(189) = (363)(363) = (3²*63²)

So, we can simplify the radical as:

√35281 = √(3²63²) = 3√(63²) = 3√(6363) = 3√3969 = 3√(31323) = 3√(3²1323) = 3*63 = 189

Therefore, √√189² = √(189*189) = √35281 = 189

Step-by-step explanation:

The total volume in cubic centimeters of the boxes in the display is 4608√6.

Therefore the answer is 4608√6.

The formula for finding surface area of a cube of side a is

A = 4a²

The formula for finding volume of a cube of side a is

V = a³

Given that surface area of a cube is 384 cm², that is

4a² = 384 cm²

a² = (384/ 4) cm²

Therefore, a = 4√6 cm

Now volume of a single cube can be found by

V = a³

V = (4√6 cm)³

V = 384√6 cm³

Therefore volume of 12 such cubes is

= 12V

= 12×384√6 cm³

= 4608√6 cm³

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Answer: hi

We can begin by using algebra to represent the number of coins of each denomination. Let x be the number of pennies and dimes, and y be the number of quarters. Since there are equal number of pennies and dimes, we can write:

x + x + y = 56 (number of coins)

Next, we can use the information about the total value of the coins to set up another equation. We know that the total value is $6.59, and the value of each coin is:

Pennies: $0.01 * x = $0.01x

Dimes: $0.1 * x = $0.1x

Quarters: $0.25 * y = $0.25y

The total value is the sum of the value of each coin:

$0.01x + $0.1x + $0.25y = $6.59

Now we have a system of equations:

x + x + y = 56 and 0.01x + 0.1x + 0.25y = 6.59

We can now solve this system of equations using substitution method.

x + x + y = 56

x = 56 - y

Now we can substitute x in the second equation:

0.01(56-y) + 0.1(56-y) + 0.25y = 6.59

0.56 - 0.01y + 0.56 - 0.1y + 0.25y = 6.59

1.12 - 0.11y = 6.59

-0.11y = -5.47

y = 50

Now that we know the number of quarters, we can substitute it back into the equation x + x + y = 56

x = 6

So Carlos has 6 pennies and dimes, and 50 quarters in the box.

We can check this by multiplying the number of coins by their value and adding up

60.01 + 60.1 + 50*0.25 = 0.06 + 0.6 + 12.5 = 6.59

Step-by-step explanation:

Negative shift is a phenomenon where the supply curve shifts to the left, resulting in a higher amount and lower quantity of the goods or services being supplied.

Negative shift is a phenomenon where the supply curve shifts to the left. This occurs when the factors of production used to create a good or service become more expensive, reducing the quantity of the good or service being supplied. The increase in cost results in an increase in the price of the good or service, leading to a decrease in the quantity supplied. The shift of the supply curve to the left reflects the market's response to changes in the cost of production, and often results in a decrease in consumer demand due to the increased cost. Negative shifts in the supply curve can be caused by increases in production costs, taxes, or regulations. As the cost of production increases, the suppliers are less likely to produce the good or service, leading to a decrease in the quantity being supplied, and an increase in the price.

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The value of f(-5) for the function f(x) = 3x^2 -2x + 5 is 90.

What is the quadratic function?

A quadratic function is a polynomial of degree 2 and so the equation of quadratic function is of form f(x) = ax^2 + bx + c, where 'a' is a non-zero number; and a, b, and c are real numbers.

To find the value of f(-5), we need to substitute -5 for x in the function f(x) = 3x^2 - 2x + 5.

f(-5) = 3(-5)^2 - 2(-5) + 5

Simplifying the equation:

f(-5) = 3(25) - 2(-5) + 5

f(-5) = 75 - (-10) + 5

f(-5) = 75 + 10 + 5

f(-5) = 90

So the value of f(-5) is 90.

The function f(x) = 3x^2 - 2x + 5 is a quadratic function, which means it has the form ax^2 + bx + c,

where a, b, and c are constants. In this case, a = 3, b = -2, and c = 5. When we substitute -5 for x,

we are finding the value of the function when x is equal to -5.

By plugging in -5 for x, we are able to find the y-coordinate (or the value of the function) when x is -5. In this case, the y-coordinate is 90.

Hence, the value of f(-5) for the function f(x) = 3x^2 -2x + 5 is 90.

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[tex]\it f(-5)=3\cdot(-5)^2-2\cdot(-5)+5=75+10+5=90[/tex]

This is How do we know if the systems with no solution or infinitely many solutions.

In mathematics, a system of linear equations is the collection of two or more linear equations that share the same variables. The maximum power of the variable in the linear equations in this situation is 1, making them first-order equations. A linear equation may have one, two, or three variables.

When the graphs are parallel, an equation system with linear components cannot be solved. endless options. The graphs of a system of linear equations have an infinite number of solutions.

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The inverse operation of log is antilog.

Mathematicians use the logarithm to express the inverse function of exponentiation. That is, the logarithm of a given number p is the exponent to which another fixed number, the base b, must be raised in order to obtain that number p. In the simplest case, the logarithm counts how many times the same factor appears in repeated multiplication.

The sum of the logarithms of two numbers says a and b, is the logarithm of the product of the two numbers. Both numbers must have the same base. In other words, this theorem is known as the “product rule for logarithms”.

The difference of the logarithms of two numbers, such as a and b, is equal to the logarithm of their division. Even in this case both numbers should have the same base. There is another name for this theorem, which is the “quotient rule for logarithms”.

Let f(x) = logₐx

y = logₐx

Now, to find the inverse of the function, swap the variables x and y.

x = logₐy

y = aˣ

Thus, the inverse operation of log is antilog.

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The amount of the constant k is known as the "constant of proportionality".

Given any position, we can calculate k by dividing the y-coordinate by the x-coordinate because k is constant (the same for every point). Where k is the constant of variation, y = kx.

We refer to a relationship between two variables as having a direct relationship when the equation for the relationship is of the form y = kx, where k is a constant. The "constant of proportionality" is the value of the constant k.

For some constant k, often known as the proportionality or variational constant, y=kx. (Some textbooks will refer to direct variation as "y varies as x," "y varies proportionally as x," or "y is directly proportional to x.

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Answer:

$60

Step-by-step explanation:

19 times 15 = 285
1425-285=1140
1140 divided by 19 = 60

To check: Divide 1425 by 75 to get 19.

Answer: what is the question?

Step-by-step explanation:

The number of markers that Stella has would be = 27 markers

The number of markers owned by Jerry = U

The number markers owned by Stella = t +16

If U = 43

t = X

That is, 43= t + 16

Make t the subject of formula;

t = 43-16

t = 27

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Complete question;

Jerry and Stella are working on an art project together. Jerry has 16 more markers than Stella. The equation given below shows this relationship, where u represents the number of markers Jerry has, and t represents the number of markers Stella has. U = t + 16 If Jerry has 43 markers, how many markers does Stella have? Show your work

Answer:

-4/4 = -1

Step-by-step explanation:

Answer: -4/4

Step-by-step explanation:

m = slope

(x1, y1) = coordinates of first point in the line

(x2, y2) = coordinates of second point in the line

-3,-1   1,-5 are the corrdinates

(-5) - (-1) = -4

1 - (-3) = 4

The main features of the production possibility curve are it slopes downward from left to right and the curve is concave to the origin.

In business, a production possibility curve (PPC) is made to estimate the performance of a manufacturing system when two commodities are manufactured together. The management uses this graph to plan the perfect proportion of goods to produce in order to reduce wastage and costs while maximising profits.

The two basic properties of the production possibility curve are:

It slopes downward from left to right- The production possibility curve slopes downward because both the variables involved in the equation are inversely related as one increases then another decreases and vice versa.

The curve is concave to the origin- Since resources are used specifically, therefore every time when one more unit of a commodity is produced more units of the other commodity are sacrificed which results in increasing marginal opportunity cost which leads to the concave shape of the production possibility curve.  

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Aisha bought 5.5 pounds of fruit if she buys 3 pounds of apples and 2.5 pounds of raspberries and she buys x + y fruits if she buys x pounds of apples and y pounds of raspberries.

Addition is one of the basic mathematical operations where two or more numbers is added to get a bigger number.

The process of doing addition is also called as finding the sum.

Given that,

We have to calculate the total pound if Aisha bought 3 pounds of apples and 2.5 pounds of raspberries.

Total pounds = 3 pounds + 2.5 pounds = 5.5 pounds

If x pounds of apples and y pounds of raspberries are bought,

Total pounds = x + y

Hence the total pounds is calculated by adding the amount of pounds of apples and raspberries to get 5.5 pounds and x + y pounds.

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The sound intensity of the pile driver is 39.6 times that of jack hammer as per given data.

As given in the question,

L represents the loudness in decibels(dB)

I = sound intensity in watts/m²

Loudness of pile driver = 112dB

In terms of sound intensity it is equal to = (112 / 10)

                                                                   = 11.2

Sound intensity in power of 10

10^(11.2) = I / 10^(-12)

⇒ I = 10^(11.2)×  10^(-12)

⇒ I = 10^( 11.2 - 12)

⇒ I = 10^(- 0.8)

⇒ I = 0.15848

⇒ I = 0.1585

Relation between  the sound intensity of pile driver and th jack hammer is given by

Sound intensity of jack hammer = 0.004

Sound intensity of pile driver = 0.1585

Intensity = 0.1585 / 0.004

              = 39.6 ( nearest tenth digit )

Therefore, the sound intensity of pile driver is 39.6 times that of jack hammer.

The above question is incomplete, the complete question is :

L = loudness, in decibels (dB); I = sound intensity, in watts/m2; I0 = 10−12 watts/m2

The loudness of a jack hammer is 96 dB. Its sound intensity is about 0.004.

The loudness of a compactor is 94 dB. Its sound intensity is about 0.0025.

The sound intensity of the jack hammer is about 1.6 times the sound intensity of the compactor.

The loudness of a pile driver is 112 dB. About how many times the sound intensity of the jackhammer is the sound intensity of a pile driver? Round to the nearest ten.

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Luego de reducir la cantidad de palomitas en 20% en las bolsas, la nueva cantidad es 12 tazas.

Recordar que para si tenemos un valor V y a este lo decresemos en un porcentaje X, el nuevo valor será:

V' = V*(1 - X/100%)

En este caso, sabemos que originalmente teniamos 15 tazas de palomitas de maiz, y el valor de X será 20%.

Entonces tendremos:

V' = (15 tazas)*(1 - 20%/100%)

V' = (15 tazas)*0.8 = 12 tazas

Eso es lo qe contienen las nuevas bolsas.

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This statement is always true. The average of four real numbers is calculated by adding the four numbers together and dividing by four. Therefore, the average will always be greater than or equal to the smallest of the four numbers.

The statement "The average of four real numbers is greater than or equal to at least one of the numbers" means that when you add four numbers together and divide by four, the resulting average will always be greater than or equal to one of the original numbers.

This is because the average is a measure of central tendency that is affected by all the numbers and the number that will affect the average the most will be the largest one and since the average is the sum of all the numbers divided by 4 it will be always greater than or equal to the smallest number.

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Answer:

K. [tex]\frac{13}{2}[/tex]

Step-by-step explanation:

[tex]-3(4x-5)=2(1-5x) \\ \\ -12x+15=2-10x \\ \\ 15=2+2x \\ \\ 2x=13 \\ \\ x=\frac{13}{2}[/tex]

Answer:

y=3.5

Step-by-step explanation:

y=3(0.5)+2

y=1.5+2

y=3.5

Applying the trigonometric ratios, the values of x are:

1. x = 7.3

2. x = 33.3

3. x = 21.3

4. x = 31.9

5. x = 25.6

6. x = 11.0

7. x = 41.8°

8. x = 64.2°

These ratios include:

1. ∅ = 63

adj. = x

hyp. = 16

Therefore,

cos 63 = x/16

x = cos 63 * 16

x = 7.3

2. ∅ = 39

opp. = 27

adj. = x

Therefore,

tan 39 = 27/x

x = 27/tan 39

x = 33.3

3. ∅ = 49

adj. = 14

hyp. = x

Therefore,

cos 49 = 14/x

x = 14/cos 49

x = 21.3

4. ∅ = 15

adj. = x

hyp. = 33

Therefore,

cos 15 = x/33

x = cos 15 * 33

x = 31.9

5. ∅ = 52

opp. = x

adj. = 20

Therefore,

tan 52 = x/20

x = tan 52 * 20

x = 25.6

6. ∅ = 27

hyp. = x

opp. = 5

Therefore,

sin 27 = 5/x

x = 5/sin 27

x = 11.0

7. ∅ = x

opp. = 4

hyp. = 6

Therefore,

sin x = 4/6

x = sin^(-1)(4/6)

x = 41.8°

8. ∅ = x

adj. = 14

opp. = 29

Therefore,

tan x = 29/14

x = tan^(-1)(29/14)

x = 64.2°

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Answer:

The best place for your neighbour to put the bird bath would be at the centroid of the triangular yard. The centroid is the point where the three medians of a triangle meet, and it is also the point that is equidistant from all three sides of the triangle. This way the bird bath will be the same distance from each edge of the yard, which is what your neighbour wants. To find the centroid, your neighbour can first draw the medians of the triangle and then find their intersection point.

When we consider a system of linear equations, we can find the number of solutions by comparing the coefficients of the variables of the equations. Also, we can find the number of solutions by the graphical method.

The number of solutions to a system of equations depends on the equations themselves. Systems can have one solution, multiple solutions, infinitely many solutions, or even no solution.

Systems of linear equations are categorized by how many solutions they have. There are two main categories of systems of equations:

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In the 4th month, the height of the f(x) plant exceeds that of the g(x) plant. This can be solved using the concept of polynomials.

When exponents, constants, and variables are joined using mathematical operations like addition, subtraction, multiplication, and division, the result is a polynomial (No division operation by a variable).

Month (x)

f(x) = 3x / g(x) = 5x + 12

⇒f(x)  × g(x) = 3X

⇒g(x) = 3X/ 5x + 12

At 4th month let x = 4

f(x) =g(x)

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The complete question is as follows:

Two different plants that grow each month at different rates are represented by the functions f(x) and g(x). In what month does the height of the f(x) plant exceed that of the g(x) plant?

Month (x) / f(x) = 3x / g(x) = 5x + 12

1 / 3 / 17

2 / 9 / 22

A) Month 3

B) Month 4

C) Month 5

D) Month 6

The segments she can cut is 5.5

To find the number of segment is, we divided 11/12 inches with 1/6.

11/12 : 1/6 = 11/12×6/1= 5.5

Fractional numbers are special numbers that include a numerator and denominator. Apart from the arithmetic operation multiplication of fractions, another thing that is no less important is the division of fractions. What's interesting about dividing fractions is that not all divisions will result in a smaller value. Fraction division can also result in larger values.

In general, fractions are divided into two, namely ordinary fractions and mixed fractions.

Examples of common fractions like 2/7, 16/5 or 11/3.

The examples of mixed fraction numbers are 31/9, 31/5 and also 32/3.

Note, 16/5 and 31/5 have the same value even though the writing of the two numbers is different (the first is an ordinary fraction, the second is a mixed fraction). Likewise with 11/3 and 32/3, both also have the same value.

Your question is incomplete but most probably your full question was:

a piece of thread is 11/12 inches long. Jenny needs to cut the thread into 1/6 segments how many segments can she cut?

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Answer:

If given angle limits less than a quarter of a full circle, then it is an acute angle. A straight angle is half a full angle. If given angle limits less than a half of a straight angle, then it is an acute angle. If given angle limits close to a half or more than a half of a straight angle, then it is not an acute angle.

Step-by-step explanation:

An infinite number of triangles can be drawn with any 3 dots. I choose these 3 dots.

how many right triangles with distinct sizes have all three vertices taken from the array of dots below?

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The total cost at Store #2 is the lowest due to the combination of the 15% discount, 8% tax, and no shipping and handling fee.

Store #1 SHO

Original price: $98

Discount: 18%

Discounted price: $80.04

Tax: 8%

Total price: $86.44

Store #2

Original price: $98

Discount: 15%

Discounted price: $83.10

Tax: 8%

Total price: $89.78

Store #3

Original price: $105

Discount: 10%

Discounted price: $94.50

Tax: 0%

Shipping & Handling: $3.99

Total price: $98.49

Therefore, Store #2 has the best deal on the snow jacket, with a total price of $78.37 after discounts and taxes are applied.

The best deal for the snow jacket is at Store #2. After applying the discounts and taxes, the total price of the jacket is $78.37. The original price at Store #2 is $98 and the discount is 15%, bringing the discounted price to $83.10. The tax is 8%, bringing the total price to $89.78. Store #1 has an 18% discount and an 8% tax, resulting in a total price of $86.44. Store #3 has a 10% discount, no tax and a $3.99 shipping and handling fee, resulting in a total price of $98.49. Therefore, Store #2 is the best deal.

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Step-by-step explanation:

the answer is in the photo