plz help my grade went down

Answer:

The multiplicative inverse of 7 is 1/7.

Step-by-step explanation:

A number's multiplicative inverse is its reciprocal.

hope i helped

-lvr

Answer:

x=17

Step-by-step explanation:

x-9=8

add nine on both sides

x-9+9=8+9

the nines on the side with the x cancel each other

x=17

Answer:

3(5x+2)

Step-by-step explanation:

Given the expression

15x + 6 =

To factor we need to find the greatest common factor of 15 and 6

15 = 3×5

6 = 3×2

Substitute into the expression

15x+6

= 3(5)x + 2(3)

Factor out the like terms

= 3(5x+2)

Hence the required expression is 3(5x+2)

Answer:

3x-2 = 7

After that, -2 go in right side like given below:

3x = 7+2

3x = 9

x = 9/3

x = 3.

Answer: 1/2

Step-by-step explanation:

Simplify 2/3 to 4/6

Subtract 1/6 from both sides of the equation

4/6 - 1/6 = 3/6 = 1/2

Answer:

3/6

Step-by-step explanation:

You first have to change the denominator into a 6 then multiply it then you get 3/6. Hope this helped brutherrr

Answer:

B but am not sure tho it's probably A

Answer:

40/3

Step-by-step explanation:

\(\frac{x}{8} =\frac{5}{3}\)

Multiply both sides by 8:

\(x=\frac{5}{3}* \frac{8}{1} =\frac{40}{3}\)

Answer:

40/3

Step-by-step explanation:

hopefully this helps

first multiply 8 x 5 from x/8 and 5/3

next after you multiply 8 x 5 you should get 40 and your is

40/3

hopefully this helps

100 kg of weight is equal to 220.462 lbs

To convert kilograms (kg) to pounds (lbs), you can use the conversion factor of 1 kg = 2.20462 lbs. So to convert 100 kg to lbs, you would multiply 100 by 2.20462.

This gives you the equivalent weight of 220.462 lbs. It is important to note that the pound is a unit of weight commonly used in the United States and the United Kingdom, while the kilogram is the standard unit of mass in the International System of Units (SI).

It is important to use the correct unit of measurement when working with weights and masses in different contexts.

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Answer:

"A" seems to be incorrect....

Step-by-step explanation:

"A" seems to be incorrect....

\(\frac{\left(\sin \left(60^{\circ \:}\right)\cdot \:300\right)}{\sin \left(90^{\circ \:}\right)}=150\sqrt{3}\quad \begin{pmatrix}\mathrm{Decimal:}&259.80762\dots \end{pmatrix}\)

Step-by-step explanation:

Event A is a certain event because with 14 girls and only 12 months in a year, by the pigeonhole principle, there must be at least two girls who were born in the same month.

Event B is an elementary event because there is only one part labeled with the number 10 out of 75 parts in the box, so the probability of drawing that part is 1/75.

The relative frequency of hits is calculated by dividing the number of hits by the total number of shots. In this case, it is 20/25.

The relative frequency of boys born in that month is calculated by dividing the number of boys born by the total number of births. In this case, it is 43/100.

There are four balls labeled with numbers divisible by 3 (3, 6, 9, and 12) out of twelve balls in total. So the probability of drawing a ball with a number divisible by 3 is 4/12 = 1/3.

The probability that a part is not of good quality is equal to 1 minus the probability that it is of good quality. In this case, it is 1 - 0.75 = 0.25.

The probability that at least one coin lands heads up is equal to 1 minus the probability that both coins land tails up. The probability that both coins land tails up is (1/2) * (1/2) = 1/4. So the probability that at least one coin lands heads up is 1 - 1/4 = 3/4.

A fair die has six equally likely outcomes when rolled. So the probability of rolling a 2 is 1/6.

A deck of cards containing 36 cards has four suits: clubs, diamonds, hearts, and spades. Each suit has nine cards, so there are nine spades in the deck. So the probability of drawing a spade is 9/36 = 1/4.

There are two white marbles and ten marbles in total in the bag. So the probability of randomly selecting a white marble is 2/10 = 1/5.

There are four ways to roll two dice and get a sum of five: (1,4), (2,3), (3,2), or (4,1). Each outcome has a probability of (1/6) * (1/6) = 1/36. So the probability that the sum of the numbers rolled is five is 4 * (1/36) = 1/9.

If Jānis throws a ball into the basket with a probability of 0.68 and he makes 50 throws, we can expect him to throw the ball into the basket about 0.68 * 50 = 34 times.

The probability that at least one die shows four points when two dice are rolled can be calculated as one minus the probability that neither die shows four points: P(at least one die shows four points) = = 1 - P(neither die shows four points) = 1 - P(first die does not show four points) * P(second die does not show four points) = 1 - (5/6) * (5/6) =11/36

If two events are independent, then the probability that both events occur simultaneously can be calculated as the product of their probabilities: P(both machines need to be regulated within an hour) = = P(first machine needs to be regulated within an hour) * P(second machine needs to be regulated within an hour) =0.8 *0.7 =0.56

15.The area of a circle is proportional to the square of its radius so if we consider each ring as a target then their areas will be proportional to R^2 and (4R)^2 respectively. The ratio between these areas will be R^2 : (4R)^2 = R^2 :16R^2 =1:16 So if we consider each unit area as having an equal chance to be hit then we have: P(the shot hit the smaller ring)= Area(smaller ring)/(Area(smaller ring)+Area(larger ring))=1/(16+1)=1/17

16.There are four winning tickets out of twenty tickets in total in a lottery so if Ilze buys one ticket then her chance to get a winning ticket will be: P(Ilze’s ticket is a winning ticket)= Number of winning tickets / Total number of tickets=4/20=1/5

17.The day on which someone was born can be any day from Monday to Sunday with equal chances so if we consider two friends then: P(both friends were born on Saturday)=P(first friend was born on Saturday)P(second friend was born on Saturday)=(1/7)(1/7)=1/49

18.The student knows seven out of eight questions so if two questions are included in a test then his chance to know both questions will be: P(the student knows both questions)= Number of ways to choose two known questions / Number of ways to choose any two questions=(7 choose 2)/(8 choose 2)=21/28=3/4

19.There are four cards labeled with letters A,P,S,E so if three cards are drawn successively without replacement then there will be: Number of ways to draw three cards=Number of ways to draw first cardNumber of ways to draw second cardNumber of ways to draw third card=432=24 The only way for these cards to be drawn in order A,P,E will be if they are drawn successively as A,P,E so: P(the cards are drawn in order A,P,E)=Number of ways for cards to be drawn in order A,P,E / Number of ways for any three cards to be drawn=1/24

20.Two dice have six faces each so when they are rolled simultaneously there will be: Number of possible outcomes=Number of faces on first dieNumber of faces on second die=66=36 None of these outcomes will result in a sum equal to fourteen so: P(the sum of numbers rolled equals fourteen)=0

Answer:

Step-by-step explanation:

Based on the given side lengths, LM=5cm, LN=5cm, and MN=4cm, we can classify the triangle LMN by its side lengths and angles.

By Side Lengths:
Since all three sides of the triangle have different lengths, we classify it as a scalene triangle. A scalene triangle is a triangle in which all three sides have different lengths.

By Angles:
To determine the classification based on angles, we can use the Law of Cosines to find one of the angles. Let's find angle LMN using the Law of Cosines:

c² = a² + b² - 2ab * cos(C)
where c is the side opposite angle C.

In this case, a=5cm, b=4cm, and c=5cm.
Substituting the values, we have:

5² = 5² + 4² - 2 * 5 * 4 * cos(C)
25 = 25 + 16 - 40 * cos(C)
25 = 41 - 40 * cos(C)
40 * cos(C) = 41 - 25
40 * cos(C) = 16
cos(C) = 16/40
cos(C) = 0.4

Now, we can use the inverse cosine (cos⁻¹) function to find angle C:

C = cos⁻¹(0.4)
C ≈ 66.42 degrees

Since we know the value of angle C, we can determine the remaining angles using the Triangle Angle Sum Property, which states that the sum of the angles in a triangle is always 180 degrees.

Angle LNM = Angle LMN = 180 - (66.42 + 90)
Angle LNM ≈ 23.58 degrees

Therefore, based on the angle measurements, triangle LMN can be classified as an acute scalene triangle since all three angles are less than 90 degrees and all three sides have different lengths.

a.

The volume of the box V = 4x³ - 72x² + 324x

Since the dimensions of the square piece of paper are 18 inches each, and we cut out a length x from each side to give a total length of 2x cut from each side. So, each dimension is L = 18 - 2x.

Since the height of the open box is x and its base is a square, the volume of the open box ix V = L²x

= (18 - 2x)²x

= (324 - 72x + 4x²)x

= 324x - 72x² + 4x³

The volume of the box V = 4x³ - 72x² + 324x

b.

The minimum value of length of the sides of the squares cut from each corner is x = 3 inches.

Since the volume of the box is 432 cubic inches,

V = 324x - 72x² + 4x³

324x - 72x² + 4x³ = 432

4x³  - 72x² + 324x - 432 = 0

x³  - 18x² + 81x - 108 = 0

A factor of the expression is x - 3

So, x³  - 18x² + 81x - 108 ÷ x - 3 = x² - 15x + 36

So,  x³  - 18x² + 81x - 108 = (x² - 15x + 36)(x - 3) = 0

Factorizing the expression x² - 15x + 36 = 0

x² - 3x - 12x + 36 = 0

x(x - 3) - 12(x - 3) = 0

(x - 3)(x - 12) = 0

So,  x³  - 18x² + 81x - 108 = (x - 3)(x - 3)(x - 12) = 0

So, (x - 3)²(x - 12) = 0

(x - 3)² = 0 and (x - 12) = 0

x - 3 = √0 and x - 12 = 0

x - 3 = 0 and x - 12 = 0

x = 3 twice and x = 12

Since x = 3 is the minimum value, the minimum value of x = 3.

Since the length of the box, L = 18 - 2x

= 18 - 2(3)

= 18 - 6

= 12 inches

The width of the box = L = 12 inches

The height of the box = x = 3 inches.

So,

The minimum value of length of the sides of the squares cut from each corner is x = 3 inches.

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Answer:

The answer is1 thank you

The assumptions been met (0.6581,0.7819).

What is American adults?

In 2020, the U.S. Census Bureau counted 331.4 million people living in the United States; more than three-quarters (77.9%) or 258.3 million were adults, 18 years or older — a 10.1% increase from 234.6 million in 2010.

Given that.

\($$\begin{aligned}& p=0.72 .(1-p)=1-0.72=0.28 \\& n=200 .\end{aligned}$$\)

At \($95 \%$\) confidence level x value is 1.96

z=1.96

So r

A 95 % confidence interval bor percent of American adults who beleive in Aliens is,

\($$\begin{gathered}p \pm 2 \sqrt{\frac{p \times q}{n}} \\\therefore 0.72+1.96 \sqrt{\frac{0.72 \times 0.28}{200}} \\\therefore 0.72 \pm 1.96 \sqrt{0.0010} \\0.72 \pm 0.0619 \\\therefore \quad(0.6581,0.7819)\end{gathered}$$\)

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The rate at which body cover distance is given by speed.

The formual for the speed is,

For the given question, distance is d=34 miles and time is t=4/5 hours.

Substitute the value in the formula to obtain the speed of Camden.

So the speed at which camden cover distance is 85/2 miles per hour.

Answer: The answer is 12.57 because the formula is The area of a circle is pi times the radius squared (A = π r²). Hope this helps.

Step-by-step explanation:

Answer:

your right it does

Step-by-step explanation:

Answer:

-6h - 1

Step-by-step explanation:

-9 + (-10h) + 4h + 8

-9 + (-6h) + 8

-6h - 1

First Triangle:

This is a special right-angled triangle and is known as 45°-45°-90° triangle

To solve for any side length, we can use the following procedure.

As you can see, the sides opposite to the 45° are equal and in this case, both are 3

Then the side opposite 90° will be

Therefore, the side a = 3√2

Second Triangle:

This is a special right-angled triangle and is known as the 30°-60°-90° triangle.

To solve for any side length, we can use the following procedure.

As you can see, the side opposite the 30° is the smallest.

The side opposite the 60° is 2 times the side 30°

The side opposite the 90° is √3 times the side 30°

For the given case, we want to know the side opposite of side 30°

We are given the side opposite the 60° that is 8

Therefore, side h = 4

The information provided is incomplete as the Jensen's alpha for stock B is missing. Without the Jensen's alpha for stock B, we cannot draw any conclusions about its performance or compare it to stock A. Jensen's alpha is a measure used in finance to assess the risk-adjusted performance of an investment relative to a benchmark. It captures the excess return of the investment above what would be expected based on its risk exposure. To make a meaningful analysis or comparison between stock A and stock B, we would need to know the Jensen's alpha for both stocks or have additional information about their performance metrics or risk profiles.

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Answer:

(5,-1) Hope It Help

Step-by-step explanation:

Brainliest please

Answer: 8

Step-by-step explanation:

CF looks like the radius of the circle.

ED looks like the diameter.

.: ED = 2 x CF = 2 x 4 = 8

.: ED = 8

Answer:

The length of ED, or the diameter, is 8

Step-by-step explanation:

As the other person explained, CF is the radius, as the radius is from the centermost point to the edge.  I also see that ED is the diameter, as the diameter is from edge to edge, going through the centermost point.  Therefore, since the diameter is double the radius, we can solve this with the following equation:

2 * r = d, where r is radius and d is diameter.

2 * 4 = d

8 = d

Answer: LOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOL FAT NECK AHH BOY

Answer:

area = 1/2 x base x height

Step-by-step explanation:

i got you bro

Answer:

23/42

Step-by-step explanation:

2/7 = 12/42

1/6 = 7/42

12/42 + 7/42 = 19/42

42/42 - 19/42 = 23/42

Answer:

so you don't have to give me points but I can explain how to do it

Step-by-step explanation:

so for number 1. it says y=3x-7 and the equation is 5x+4y=6

so basically your plugging in y so

5x+5(3x-7)=6 and you will get your answer