Someone please help!!!

Answer:

the shape is different

Step-by-step explanation:

you draw the shapes

The experimental probability of not selecting a heart is (D)P(not heart) = 77.5%

The experimental probability that a heart is selected is:

= Number of times hearts was selected / Number of times Lisa drew a card

= 9 / 40

This then means that the experimental probability of not selecting a heart is:

= 1 -  experimental probability of selecting a heart

= 1 - 9 / 40

= 31 / 40

= 0. 775

= 77. 5 %

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The question is:

Determine the experimental probability of not selecting a heart.

(A) P(not heart) = 9%

(B) P(not heart) = 10%

(C) P(not heart) = 67.5%

(D)P(not heart) = 77.5%

Answer:

Step-by-step explanation:

To determine if the triangle is a right triangle, we can use the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.

Let's label the sides of the triangle as follows:

a = 4 inches

b = 5 inches

c = 7 inches

Using the Pythagorean theorem, we can calculate:

c^2 = a^2 + b^2

7^2 = 4^2 + 5^2

49 = 16 + 25

49 = 41

Since 49 does not equal 41, this means that the triangle is not a right triangle.

Therefore, the answer is no, the triangle is not a right triangle.

The number of different sets of three points of this grid can be the three vertices of an isosceles triangle is 36.

An isosceles triangle is one with two equal sides. The two angles that face the two equal sides are also equal. An isosceles triangle, in other words, is a triangle whose two sides are equal in length.

By using the Permutation formula,

Number of isosceles triangle to be formed is,

9!/(7!x2!) = 9x8x7!/7!x2!

= 9x8/2

= 36

So number of isosceles triangle that can be formed of this 3-by-3 grid is 36.

When a square is described as a 3 x 3 Magic square, it has three rows and three columns. An illustration of a 3 by 3 magic square with the magic constant.

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The high temperature increased by 15.38% from yesterday to today.

First, you must find the actual increase in temperature. by using this formula:

Percentage increase = (Today's temperature - Yesterday's temperature) / Yesterday's temperature * 100

Percentage increase = (75 - 65) / 65 * 100 = 15.38%

Temperature is a physical quantity that indicates hot and cold. It is the manifestation of thermal energy, present in all matter, which is the inception of the occurrence of heat, a flow of energy when a body is in contact with another that is colder or hotter.

Temperature is measured with a thermometer.

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The value of 9/10  divided by 3/5 is 3/2.

How to multiply two fractions?

When multiplying fractions, you first start with the two fractions you want to multiply. You multiply the numerators (the top numbers) together, and then multiply the denominators (the bottom numbers) together. After putting the two results together as a new fraction, you may need to simplify the fraction in order to express it in its lowest terms.

Firstly , let's find the reciprocal of the divisor

Reciprocal of

3/5 is 5/3

Now, multiply it with the dividend

So,

9/10 ÷ 3/5

= 9/10 × 5/3

=  45/30

After reducing the fraction, the answer is

3/2

Hence , the value of 9/10  divided by 3/5 is 3/2.

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Step-by-step explanation:

Hi joolin

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The chance at least one of the alarms will wake her up is 0.96.

If the probability of one event does not affect the probability of another event, the events are independent.

Given

Probability that Alarm clock 1 is reliable = 60% = 0.60

Probability that Alarm clock 2 is reliable = 90% = 0.90

P of alarm clock 1 not reliable = 0.40

P of alarm clock 2 not reliable = 0.10

Therefore,

The chance at least one of the alarms will wake her up is;

=p1.p2' + p1'. p2 + p1.p2

so, calculating we get,

= 0.96

Hence, the chance at least one of the alarms will wake her up is 0.96.

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Answer:

3,240°

Step-by-step explanation:

The sum of the measures of the interior angles of a polygon with n sides can be found using the formula:

(n-2) * 180°

So, for a 20-sided figure, the sum of the interior angles would be:

(20-2) * 180° = 18 * 180° = 3,240°

The cash price of the refrigerator is $408.

A discount is the reduction of either the monetary amount or a percentage of the normal selling price of a product or service.

Given that, a new refrigerator has a price of $480.00.

The store will discount the price by 15% if the purchaser pays in cash.

Now, the discount is

15% of 480

= 15/100 ×480

= 0.15×480

= 72

Now, 480-72

= $408

Therefore, the cash price of the refrigerator is $408.

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The solution is, the salary of the Luke after 10 years is 98000 dollars & the salary of the Luke after t years is 53000+4500t .

Simplify simply means to make it simple. In mathematics, simply or simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

here, we have,

Given data:

* The starting salary of the Luke in the new company was,

S1 = 53000

* The salary raise given to Luke each year is,

R = 4500

(a). The salary of the Luke after 10 years is,

S = S1 +R*10

S  = 53000 + ( 4500* 10)

S = 98000

Thus, the salary of the Luke after 10 years is 98000 dollars.

(b). After the t years,

S = S1 +R*t

S  = 53000 + ( 4500* t)

S = 53000+4500t

Thus, the salary of the Luke after t years is 53000+4500t .

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The prima facie rule uses actual probability distributions to determine if hiring decisions have had adverse impact on minority groups.

The "prima facie" rule refers to a legal standard or a evidentiary standard used in the field of employment discrimination law. In the context of employment discrimination, a prima facie case refers to the minimum evidence required to establish a presumption of discrimination.

The term "prima facie" comes from Latin and means "at first sight" or "on its face." In other words, a prima facie case of discrimination is established if, at first sight, the evidence suggests that discrimination has taken place. Once a prima facie case has been established, the burden of proof shifts to the employer to provide a non-discriminatory explanation for the actions in question.

It is more commonly used in legal and ethical contexts to refer to a case or argument that is initially strong enough to establish a point, but may be challenged or overcome by further evidence or argument.

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If a back-to-school sale offered a laptop for $379 and this sale price reflected a 15% discount, after using the equation the cost of the computer before the reduction in price is, $446.47.

Percentage is a way to express a number as a fraction of 100. It is often used to represent ratios and proportions in a more convenient and understandable form, especially in financial and statistical contexts. For example, 50% means 50 per 100, or half of a given quantity. It is denoted using the symbol "%".

Let's call the original cost of the laptop "x".

The equation to find the cost after a discount is:

x - x * (discount rate) = sale price

In this case, the discount rate is 15%, or 0.15. Plugging in the given values:

x - x * 0.15 = 379

Expanding the equation:

x - 0.15x = 379

0.85x = 379

Dividing both sides by 0.85:

x = 379 / 0.85

x = 446.47

So, the cost of the laptop before the reduction in price was $446.47.

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The matching is as follow:

x²³ / x³ -->  [tex]x^{20[/tex]

[tex]x^{14}/ x^{17}[/tex] --> 1/x³

[tex]x^{19}/ x^{33}[/tex] --> 1/[tex]x^{14[/tex]

[tex]x^{16}/ x^7[/tex] -->  [tex]x^9[/tex]

Exponents and powers can be used to represent extremely big or extremely small numbers in a more straightforward fashion.

Given:

We will use the Property of exponent and power

[tex]x^m/ x^n[/tex] = [tex]x^{m-n[/tex]

1. x²³ / x³

Using the property

x²³ - ³ = [tex]x^{20[/tex]

2. [tex]x^{14}/ x^{17}[/tex]

Using the property

= [tex]x^{14- 17}[/tex]

= [tex]x^{-3[/tex]

= 1/x³

3. [tex]x^{19}/ x^{33}[/tex]

Using the property

= [tex]x^{19-33}[/tex]

= [tex]x^{-14}[/tex]

= 1/[tex]x^{14[/tex]

4. [tex]x^{16}/ x^7[/tex]

Using the property

= [tex]x^{16-7}[/tex]

= [tex]x^9[/tex]

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The table that represents a linear relationship is the one in option 3.

A linear relationship can be written as:

y = a*x + b

Where a is the slope and b is the y-intercept.

If we add 1 to the input we get:

y = a*(x + 1) + b

y = (a*x + b) + a

So for each increase of 1 unit on the input we have a constant increase on the value of y.

The table that represents a line is the number 3, where you can see that the increases in the f(x) values are constants.

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The Expected value is the long-term average position of any variable. The anticipated value will be$5.18

The predicted value is the long-run average of all variables. It also shows the loaded normal probabilities for all possible values. Investors use expected value to estimate an investment's return, often in relation to its risk.

Given the data in detail

Pupil Lunch check Bones spent Probability

2$10 20/50.

1$8 8/50.

12$6 72/50.

23$5 115/50.

8$4 32/50.

4$3 12/50

The sum will be

aggregate = 20+ 8 +72 +115 +32 +12

                           50

= 259/50

= $5.18

The anticipated value a pupil would spend on lunch each day will be $5.18

Question

From the following data, calculate the expected  value a pupil can spend on lunch each day?

Students & Amount spent

2$ 10

1$ 8

12$ 6

23$ 5

8$ 4

4$ 3

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Answer:

this equation is always true

Step-by-step explanation:

Solve the equation and check your solution: -2(x - 1) = 2 - 2x

-2(x - 1) = 2 - 2x

-2x + 2 = 2 - 2x

-2x + 2x = 2 - 2

0 = 0

(this equation is always true)

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

check

whatever value you give to x the equation is always true, let's take 2 as an example

-2(2-1) = 2 - 2 * 2

-4 + 2 = 2 - 4

-2 = -2

Some triangle pairs are congruent triangles but some others are not, because:

A pair of triangles is congruent if they have one of these criterias:

Let's explore each triangle pairs we have:

Pair 1

We know that both triangle have a vertical angle on its connection, hence both angles are congruent. They also have another pair of corresponding angles and 1 pair of corresponding sides between the angles .

Pair 1 meet ASA rules --> Congruent triangles

Pair 2

Pair 2 has 1 corresponding angle and 2 pairs of corresponding sides

Pair 2 meets SAS rules --> congruent triangles

Pair 3

We know that both triangle have a vertical angle on its connection, hence both angles are congruent. They also have another pair of corresponding angles and 1 pair of corresponding sides between the angles.

Pair 3 meet ASA rules --> Congruent triangles

Pair 4

Pair 4 has 3 corresponding sides and meets SSS rules --> congruent triangles

Pair 5

Pair 5 only has 2 corresponding sides --> not congruent triangles

Pair 6

We know that both triangle have a vertical angle on its connection, hence both angles are congruent. They also have another pair of corresponding angles and 1 pair of corresponding sides not between the angles.

Pair 6 meet AAS rules --> Congruent triangles

Pair 7

We know that both triangle have a vertical angle on its connection, hence both angles are congruent. Pair 7 also has another 2 corresponding angles. In total, pair 7 has 3 corresponding angles.

Pair 7 is not congruent triangles because three corresponding angles might have different size of sides. A pair of triangles can be congruent only if there is at least one pair of corresponding side between them.

Pair 8

We know that both triangle have a vertical angle on its connection, hence both angles are congruent. Pair 8 also has another 2 corresponding angles. In total, pair 8 has 3 corresponding angles.

Pair 8 is not congruent triangles because three corresponding angles might have different size of sides. A pair of triangles can be congruent only if there is at least one pair of corresponding side between them.

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[tex] - a {x}^{2} + 2x + a - 5[/tex]

[tex] - 183[/tex]

By applying binomial distribution formula, it can be concluded that the probability less than two have a side effect is 56.86%.

Binomial distribution is the discrete probability distribution of the number of successes or failures in n independent trials, where each trial result has a probability p.

P(x) = C(n,x) · pˣ · qⁿ⁻ˣ where:

C = number of combinations

p = probability of success

q = probability of failure

x = number of times for a specific outcome within n trials

n = number of trials

We have the following information:

p = 12% = 0.12, thus:

q = 1 - p

  = 1 - 0.12

  = 0.88

n = 12

We want to find the probability less than two have the side effect, P(x<2):

P(x<2) = P(0) + P(1)

          = (C(12,0) · 0.12⁰ · 0.88¹²)  +   (C(12,1) · 0.12¹ · 0.88¹¹)

          = (1 · 1 · 0.2157)   +   (12 · 0.12 · 0.2451)

          = 0.2157 + 0.3529

          = 0.5686 ≈ 56.86%

Thus, the probability less than two have the side effect is 56.86%.

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The possible combination of cereal and milk the shopper can buy and still stay in their budget is:

12 ≤ 2.99x + 4.99y ≤  25      (x , y ∈ N)

The relationship between two values that are not equal is defined by inequalities. Inequality means not equal. Generally, if two values are not equal, we use “not equal symbol (≠)”. But to compare the values, whether it is less than or greater than, different inequalities are used.

"Information available from the question"

A store sells cereal for $2.99 and milk for $4.99.

A shopper wants to spend at least $12 but no more than $25 on groceries.

To find the possible combination of cereal and milk the shopper can buy and still stay in their budget.

Now, According to the question:

Let x represents the shopper buy and y represent the milk.

Then represents the inequality according to the information.

A store sells cereal for $2.99

It write 2.99x

And for the milk is 4.99y

So,

12 ≤ 2.99x + 4.99y ≤  25      (x , y ∈ N)

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Answer: 720

Step-by-step explanation:

Volume = l x w x h, so 9 x 10 = 90, 90 x 8 = 720.

Hope this helps.

The bearing of the lighthouse from the fishing boat is 242

From the question, we have the following parameters that can be used in our computation:

The bearing of a fishing boat from a lighthouse is 118°.

The bearing of the lighthouse from the fishing boat is calculated as

The bearing of the lighthouse from the fishing boat = 360 - The bearing of a fishing boat from a lighthouse

Substitute the known values in the above equation, so, we have the following representation

The bearing of the lighthouse from the fishing boat = 360 - 118

Evaluate

The bearing of the lighthouse from the fishing boat = 242

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$9.10 in all nickels is how many nickels

9.10 / 0.05

how many 5 cent pieces add up to that

182 nickels

a penny is one cent

just move the decimal place over twice

9.10

910.0

910 pennies

Hope this helps

- Jeron :- )

The probability that you draw a sphere given that it is blue is given as follows:

5/7.

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes.

The total outcomes in this problem are the blue shapes, hence the number is given as follows:

6 + 15 = 21 shapes.

The desired outcomes are the blue spheres, hence the number is given as follows:

15.

Hence the probability that you draw a sphere given that it is blue is given as follows:

p = 15/21

p = 5/7. (simplify numerator and denominator by 3).

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Answer:

[tex]\frac{13}{12}=1\frac{1}{12}[/tex]

Step-by-step explanation:

You have 12/12 + 1/12 so it would end up being 13/12 so you can simplify the 12/12 to 1 and have [tex]1\frac{1}{12}[/tex]

The cost of each balloon and each banner is $2 and $1 respectively.

Let

cost of balloon= x

cost of banner= y

6x + 3y = 15

4x + y = 9

Multiply equation (2) by 3

12x + 3y = 27

6x + 3y = 15

12x + 3y = 27

Subtract the equations to eliminate y

12x - 6x = 27 - 15

6x = 12

divide both sides by 6

x = 12/6

x = $2

Substitute into

4x + y = 9

4(2) + y = 9

8 + y = 9

y = 9 - 8

y = $1

Therefore, each balloon cost $2 and each banner cost $1

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The area of the new rectangle is 9 times the previous area and the perimeter of the new rectangle is 3 times the previous area

From the question, we have the following parameters that can be used in our computation:

(-1, 2), (-1, -4), (3, -4), and (3, 2).

See attachment for the points, where we have

Length = 4 and width = 6

Using area and perimeter formulas, we have

Area = 4 * 6 = 24

Perimeter = 2 * (4 + 6) = 20

Here, we have

New = (-3, 6), (-3, -12), (9, -12), and (9, 6).

See attachment for the points, where we have

Length = 12 and width = 18

Using area and perimeter formulas, we have

Area = 12 * 18 = 216

Perimeter = 2 * (12 + 18) = 60

The area of the new rectangle is 9 times the previous area

i.e. 216/24 = 9

The perimeter of the new rectangle is 3 times the previous area

i.e. 60/20 = 3

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