help plzzzzz its hard

Answer:

1)5 + 2.5 > 4

3)4 + 2.5 > 5

5)4 + 5 > 2.5

Step-by-step explanation:

I got this question in edge

The triangular inequality for these dimensions are:

For a triangle with sides A, B, and C, the triangular inequality says that:

In this case, we know that the pieces of wood measure:

5ft

2.5ft

4ft

The triangular inequality for these dimensions is:

So the 3 inequalities are true, meaning that we can make a triangle with these dimensions.

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Answer:

$725.76

Step-by-step explanation:

Cost of ipod = $781.29

Mail-in rebate = $55.00

Envelope = $0.13

Stamp = $0.40

A mail-in rebate is a mail containing a coupon, receipt or barcode usually in order to receive a certain discount on a purchase.

Cost of the mail-in = $(0.13 + 0.40) = $0.53

Cost of ipod + cost of mail = $781.29 - $0.53 = $780.76

New cost of ipod = (cost of ipod + cost of mail) - amount on mail-in rebate

New cost = $780.76 - $55.00

New cost = $725.76

Final answer:

The surface area of the cargo box, which is a rectangular prism with dimensions of 3 meters wide, 5 meters long, and 6 meters tall, is calculated using the formula SA = 2lw + 2lh + 2wh. The correct answer is D. 126 meters squared.

Explanation:

To find the surface area of a rectangular prism, you need to calculate the area of all six faces and sum them up.

The formula for the surface area (SA) of a rectangular prism is SA = 2lw + 2lh + 2wh, where l is the length, w is the width, and h is the height of the prism.

In this case, the dimensions of the cargo box are 3 meters wide (w), 5 meters long (l), and 6 meters tall (h). Using the formula:

Therefore, the correct answer is D. 126 meters squared.

Answer:

48-36=12

-6s=12

12 divided by -6 equals -2

s=-2

S is -2

Answer:

y>1/3x+3 and  3x-y>2

Answer:

c

Step-by-step explanation:

saya fikir jee cara tuu

Answer:

its c

Step-by-step explanation:

lul

Answer yes

Step-by-step explanation: because is solved correctly has right angle

Yes, Brian is right. Using the Pythagorean Theorem with the given side lengths shows near-perfect agreement, confirming triangle BCD is a right triangle.

Yes, Brian is correct. Triangle BCD is a right triangle.

We can see this by looking at the Pythagorean Theorem, which states that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides.

In triangle BCD, the hypotenuse is BD, which has a length of 21.7 meters. The other two sides, BC and CD, have lengths of 13.5 meters and 17 meters, respectively.

Let's plug these values into the Pythagorean Theorem:

BD² = BC² + CD²

21.7² = 13.5² + 17²

469.69 = 182.25 + 289

469.69 = 471.25

As you can see, the left and right sides of the equation are almost equal, with a difference of only 1.56. This small difference is likely due to rounding errors in the given measurements.

Therefore, we can conclude that triangle BCD is a right triangle, and Brian is correct.

The chord and the diameter are perpendicular.

Suppose that chord AB is bisected by a diameter, which interserct the chord at point C.

Now, focus on triangles OAC and OBC. They have:

So, they are congruent. In particular, this means that angles ACO and BCO are equal. Since they sum up to 180, each of them must be 90°, so the diameter is perpendicular to the chord.

In a circle, if a diameter bisects a chord (that is not a diameter), then it must also be the perpendicular bisector of that chord.

A perpendicular bisector is defined as a line that divides an angle into two equal angles. Draw the given angle first, then cut it in half, and then draw the angle's bisector.

If a diameter bisects a chord in a circle, then it must also be the perpendicular bisector of that chord. This is because the diameter is the longest possible chord in the circle, and it passes through the center of the circle, which is the point of concurrency for all the perpendicular bisectors of chords in the circle.

Therefore, it must also be the perpendicular bisector of that chord when the diameter bisects a chord.

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To find the total time to decorate both signs, calculate the area of each sign, determine the time needed for each sign, and add the times together.

To find the total time for decorating both signs:

Answer:

y + 4 = x +8.

y - x = 4

Step-by-step explanation:

This is a rate change equation,

When y increases by 4, the equation to represent that is (y + 4).

When x is also increased by 8, the equation is (x + 8)

Since both equation are dependable,

y + 4 = x + 8

We can further simplify this to

y - x = 8 - 4

y - x = 4.

Answer

12.5 seconds

Step-by-step explanation:

Find the time it takes the egg to travel in 1 second

1/2 second=8 feet

x 2                x 2

1 second=16 feet

Create a proportion:

(x represents time in this equation)

16 feet :1 second=200 feet: x seconds

-solve with cross products

x=12.5

Answer

12.5 seconds

step-by-step explanation:

divide 200 by eight (which  would give you the abount of half seconds)and divide by 2

Answer:

720

Step-by-step explanation:

Since we are choosing a subset of 3 people from a set of 10 people, and arranging the 3 people according to relative strength, the answer can be obtained by computing P(10,3).

 P(10,3)=10! / (10-3)!

= 10!/7!

Rewrite  10 !  as  

10 * 9  * 8  * 7 !  / 7!

Cancel the common factor of  7 !  and divide ( 10  * 9 * 8 ) by  1

10  * 9  * 8 = 720

Final answer:

To find the number of different outcomes possible when selecting and ranking three candidates out of ten, we calculate the permutations without repetition, using the formula 10! / (10 - 3)!, which yields 720 different outcomes.

Explanation:

The question asks for the number of different outcomes possible when a search committee must choose and rank three candidates out of ten for a job. This is a permutation problem because the order in which the candidates are ranked matters.

To calculate the number of different outcomes, we use the formula for permutations without repetition, which is n! / (n - r)!, where 'n' is the total number of items to choose from (in this case, the number of candidates) and 'r' is the number of items to choose and arrange (in this case, the number of candidates to be ranked). So, the number of different outcomes for selecting and ranking three candidates from ten is calculated as follows:

10! / (10 - 3)! = 10! / 7! = 10 × 9 × 8 = 720

Thus, there are 720 different outcomes possible when the search committee chooses and ranks three candidates out of ten.

Answer:

C = 145.4°

By creating a system of equations (2 equations) with the information from a problem, we can substitute and solve for the missing variables.

Step-by-step explanation:

Linear pairs are found on a straight line, so they total to 180°.

C + D = 180 ......eq'n [1]

C is seven more than four times D can be represented with this equation:

C = 4D + 7 ........eq'n [2]

We can solve by substituting [2] into [1], replacing "C".

C + D = 180

4D + 7 + D = 180

Collect like terms

5D + 7 = 180

Subtract 7 from both sides

5D = 173

Divide both sides by 5

D = 173/5

As a decimal, D = 34.6°.

Using eq'n [2], find C. Substitute the value of "D". Solve.

C = 4D + 7

C = 4(173/5) + 7

C = (692/5) + 7

C = (692/5) + (35/5)         Find a common denominator.

C = (692+35)/5                Combine into numerator.

C = 727/5

As a decimal, C = 145.4°.

Answer:

Step-by-step explanation:

In this question u can use relative speed of opposite direction

suppose speed of southbound train is x miles per hour so northbound train has speed of x+10 miles per hour.

Speed of tain1+ speed of train 2= Total distance/ total time

(x+10+x)=330/6

2x+10= 330/6

2x= 45

x=22.5 miles per hour (southbound train)

northbound train 22.5+10=32.5 miles per hour

Final answer:

The speed of the southbound train is 30 miles per hour, and the northbound train travels at a rate of 40 miles per hour, which is 10 miles per hour faster as per the problem's information.

Explanation:

The problem involves determining the rate of two trains, where one train travels northbound and the other southbound. The northbound train left at midnight, and the southbound train left three hours later. At 6 am, they were 330 miles apart. We know the northbound train travels 10 miles per hour faster than the southbound train.

Let's designate the speed of the southbound train as x miles per hour. Then the speed of the northbound train is x + 10 miles per hour. The southbound train travels for 3 hours (from 3 am to 6 am), and the northbound train travels for 6 hours (from midnight to 6 am).

The distance covered by the southbound train can be represented as 3x miles, and the distance covered by the northbound train would be 6(x + 10) miles. Together, these distances total 330 miles. Setting up the equation:

3x + 6(x + 10) = 330

Solving for x we get:

3x + 6x + 60 = 330

9x + 60 = 330

9x = 270

x = 30

Therefore, the speed of the southbound train is 30 miles per hour, and the speed of the northbound train is 40 miles per hour (30 + 10).

Answer:

Step-by-step explanation:

hello :

tanx = √3        0°≤x≤360°

x = 60°

x=240°

X = 60 degrees when tan x = [tex]\sqrt{3\\[/tex]

Tangent of an angle is the ratio of the length of opposite side to the length of adjacent side of a right angled triangle.

Tangent of any angle is given by the equation tan x = [tex]\frac{sin x}{cos x}[/tex]

Now, sin 60° = √3/2 and cos 60° = 1/2

So tan 60° = [tex]\frac{\sqrt{3}/2 }{1/2}[/tex] = √3

Hence for 0 degrees≤ x ≤ 360 degrees, if tan x = [tex]\sqrt{3}[/tex], then x = 60°

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Answer:

52

Step-by-step explanation:

You have to find the area of the all the sides which is L x H them add them.

Side(right) = 4 x 2 = 8

Side(left) = 4 x 2 = 8

Top = 4 x 3 = 12

Bottom = 4 x 3 = 12

Front = 3 x 2 = 6

Back = 3 x 2 = 6

= 52

Answer: b, c, f

Step-by-step explanation: just took test on edge

Answer:

39

Step-by-step explanation:

The angle marked 39 degrees and <2 are vertical angles and vertical angles are equal.  This means that <2 = 39 degrees

Answer:

39 is correct

To find angle 3 just get 90 - 39= your answer

Step-by-step explanation:

The rule is vertical angles are congruent and same.

Thanks

Answer:

  y = x² -14x +46

Step-by-step explanation:

You want a standard form quadratic equation that has a vertex at (7, -3).

The vertex form of a quadratic equation is ...

  y = a(x -h)² +k . . . . . . . vertex at (h, k), scale factor 'a'

Using a scale factor of 1 and vertex (h, k) = (7, -3), this equation is ...

  y = (x -7)² -3

Simplifying this equation gives ...

  y = x² -14x +49 -3

  y = x² -14x +46 . . . . . . . standard form equation

Answer:

- 146

Step-by-step explanation:

The n th term of an arithmetic sequence is

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 10 and d = - 14 - (- 10) = - 14 + 10 = - 4, thus

[tex]a_{35}[/tex] = - 10 + (34 × - 4) = - 10 - 136 = - 146

Answer:

20%

Step-by-step explanation:

Let's break this down into simpler terms.

We know that:

There are 15 total cookies.

7 of them are chocolate chip.

Therefore, the ratio of chocolate chip cookies to total cookies is 7:15.

In other words, there is a 7 out of 15 chance that you will pick a chocolate chip cookie the first time. This percentage is 46.666666666667%.

Now, we have to figure out the percentage after you eat it. The new ratio of chocolate chip cookies to total cookies is 6:14.

In other words, there is a 6 out of 14 chance that you will pick a chocolate chip cookie the second time. This percentage is 42.857142857143%.

Now, we have to combine the two, as the second percentage only happens if the first percentage works (if that makes any sense).

Surprisingly, 42.857142857143% of 46.666666666667% rounds to exactly 0.2, which written as a percent is 20%.

Therefore, there is a 20% chance that you will choose a chocolate chip cookie, eat it, and then choose another chocolate chip cookie.

Answer:

Step-by-step explanation:

you will have diabetes

The closest answer choice is (c) -577-617, with a 30-word summary: The expression 2ū - 6v - 67, with ū = <-97, 8> and v = <77, 57>, simplifies to -723i - 393j, matching option (c).

To find 2ū - 6v in terms of unit vectors, we first need to compute 2ū and 6v, and then subtract 6v from 2ū.

Given vectors ū = <-97, 8> and v = <77, 57>, we can find 2ū and 6v as follows:

1. 2ū = 2<-97, 8> = <-194, 16>

2. 6v = 6<77, 57> = <462, 342>

Now, subtracting 6v from 2ū:

2ū - 6v = <-194, 16> - <462, 342> = <-194 - 462, 16 - 342> = <-656, -326>

Now, we need to express this result in terms of unit vectors. The unit vectors in the x and y directions are <1, 0> and <0, 1> respectively.

The final expression is then -656<1, 0> - 326<0, 1>, which simplifies to -656i - 326j, where i and j are the unit vectors in the x and y directions, respectively.

In summary, 2ū - 6v in terms of unit vectors is -656i - 326j.

Now, if we subtract 67 from each component, we get -656 - 67 in the x-direction and -326 - 67 in the y-direction:

-656 - 67 = -723

-326 - 67 = -393

So, the final result is -723i - 393j.

The closest answer choice is (c) -577-617, with a 30-word summary: The expression 2ū - 6v - 67, with ū = <-97, 8> and v = <77, 57>, simplifies to -723i - 393j, matching option (c).

2u - 6v in terms of unit vectors i and j is equal to -24i - 14j.

To find 2u - 6v in terms of unit vectors i and j using the given vectors ū = 9i + 8j and v = 7i + 5j, we perform the following calculations:

1. Multiply vector u by 2:

2u = 2(9i + 8j) = 18i + 16j

2. Multiply vector v by 6:

6v = 6(7i + 5j) = 42i + 30j

3. Subtract 6v from 2u:

2u - 6v = (18i + 16j) - (42i + 30j)

= 18i + 16j - 42i - 30j

= (18i - 42i) + (16j - 30j)

= -24i - 14j

Therefore, 2u - 6v in terms of unit vectors i and j is equal to -24i - 14j.

The probable question maybe:

Given vectors ū = 9i + 8j and v = 7i +5j. find 2u - 6v in terms of unit vectors i  and j.

Answer:

50 Db

Step-by-step explanation:

we know that

The loudness in decibels is given by the formula

[tex]L = 10log(\frac{I}{I_0})[/tex]

where

I  = sound intensity in watts per square meter (Watts/m^2)

I₀ = reference intensity, = 10^(-12) Watts/m^2

so

For I=10^(-7) Watts/m^2

substitute in the formula above and solve for L

[tex]L = 10log(\frac{10^{-7} }{10^{-12}})[/tex]

[tex]L = 10log(10^{5})[/tex]

[tex]L = 10 (5)=50\ Db[/tex]

Answer:

D. 50 Db on ed

i took the test and i got it right

Answer:

Step-by-step explanation:

1.  Use a calculator with distribution functions here.  We're interested in finding the area under the standard normal curve to the right of 590, given that the mean is 510 and the standard deviation is 80.  Note that 590 = 510 + 80, meaning that 590 is 1 standard deviation above the mean.

According to the Empirical Rule, 68% of data under a standard normal curve lies within 1 standard deviation of the mean.  The area from the extreme left of this curve to x = 510 is 0.500, and the additional area under the curve from 510 to 590 is 34% of the total area, or 0.340.

Thus, the desired area is 0.500 + 0.340 = 0.840.  This represents the desired probability.

2.  What percentile is a score of 750?  Find the number of standard deviations to the left of 750:

                  750 - 510

z-score = ------------------- = 24/8 = 3.00

                         80

The desired percentile is the area to the left of z = 3.00.  Using a calculator, we find this area to be 0.9987.  That 750 score is in the 99+ percentile.

Answer:

x=11

Step-by-step explanation:

Since the triangles are similar, we can use ratios to solve

36                 6x-6

------------- = --------------

24                   3x+7

Using cross products

36(3x+7) = 24(6x-6)

108x +252 = 144x - 144

Subtract 108x from each side

108x-108x +252 = 144x-108x - 144

252 =36x -144

Add 144 to each side

252+144 = 36x-144+144

396 =36x

Divide by 36

396/36 =36x/36

11 =x

Answer:

x = 11

Step-by-step explanation:

Similar figures have sides in the same ratio

24/36 = (3x + 7)/(6x - 6)

2/3 = (3x + 7)/(6x - 6)

12x - 12 = 9x + 21

3x = 33

x = 11

Answer:

20.73

Step-by-step explanation:

2x10+7*1/10+3*1/100

20 + 0.7 + 0.03

20.73

Answer:

2x^10+73/100

Step-by-step explanation:

pls mark me brainliest

Answer:

[tex](B)\sqrt{21}\\(C)\sqrt{13+8}[/tex]

Step-by-step explanation:

Given the expression [tex](13 + 8) ^{1/2}[/tex]

Using law of indices: [tex]a^{1/2}=\sqrt{a}[/tex]

[tex](13 + 8) ^{1/2}=\sqrt{13+8}[/tex]

Also:13+8=21

Therefore:

[tex](13 + 8) ^{1/2}=21^{1/2}\\=\sqrt{21}[/tex]