Help!plzzzzzzzzzzzzzzx

Answer:

Step-by-step explanation:

let x be the length of third side.

10-5<x<10+5

or 5<x<15

so third side is between 5 and 15 .

Answer:  The length of the third side is greater than 5 and less than 15 units.

Step-by-step explanation: Given that the lengths of two sides of a certain triangle are 5 and 10 units.

We are to find the length of the third side of the triangle.

Let x represents the length of the third side of the given triangle.

We know that the sum of the lengths of two sides of a triangle is always greater than the length of the third side, so we must have

[tex]5+10>x\\\\\Rightarrow x<15~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)[/tex]

[tex]5+x>10\\\\\Rightarrow x>5~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)[/tex]

and

[tex]x+10>5\\\\\Rightarrow x>-5~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)[/tex]

From inequalities (i), (ii) and (iii), we get

[tex]5<x<15.[/tex]

Thus, the length of the third side is greater than 5 and less than 15 units.

Answer:

(-5,7) is the center

Step-by-step explanation:

Answer:

Short-Term investment: 5000$

Intermediate-Term investment: 65000$

Long-Term investment: 30000$

Step-by-step explanation:

To construct our first equation lets define sort-term bond investment as x, long-term investment as y.

So the equation is:

[tex]x*0,04+(100000-x-y)*0,05+y*0,06=5250[/tex]

From the equation it is found that:

[tex]y=25000+x[/tex]

Instead of y, if we put 25000+x the equation will be as following:

[tex]x*0,04+75000*0,05+(25000+x)*0,06=5250[/tex]

From the equation it is found that:

[tex]x=5000[/tex]

Short-Term investment is 5000$

[tex]x+25000=y[/tex]

Long-Term investment is 30000$

Rest of the money is Intermediate-Term investment 65000$

Answer:

Option B) and option D) are independent events. i.e. following events are independent events:

Step-by-step explanation:

Two events would be termed as Independent events if the occurrence of one event would not affect the occurrence of other event.

Let us first consider the options having independent events.

Option B) i.e. 'a coin is flipped and a spinner is spun' is treated as neither of the events is affecting the outcome of other event. For example, assuming a coin and spinner are kept isolated, the occurrence of event of a flipping coin is not affecting the outcome of the occurrence of spinner.

The same goes with the option D) i.e. 'four number cubes are rolled at the same time', as neither of the rolling is affecting the rolling of other coin.

Now, let us consider the options having dependent events

Let us suppose one ball is drawn from a bag of balls after another ball is drawn without replacement. If there is no replacement, it logically means, after every drawn event, total number of the balls are getting decreased, hence, bringing a variation among the probability after every event, as the occurrence of next event would be dealing with the remaining of the data, instead of the data that was present before the drawn of first event. Hence, the occurrence of every event depends upon the occurrence of other event, meaning the two events will keep affecting the outcome if no replacement is made before the next event.

The same logic goes with when white marbles are drawn from a bag of marbles without replacing the marbles. If there is no replacement, it logically means, after every drawn event, total number of the white marbles and marbles are getting decreased, hence, bringing a variation among the probability after every event, as the occurrence of next event would be dealing with the remaining of the data, instead of the data that was present before the drawn of first event.

So, after all the discussion, we can safely say make a conclusion that option B) and option D) are independent events. i.e. following events are independent events:

Keywords: dependent events, independent events

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Answer:

a)20$

b)46,1$

c)0,3336

d)No concerns

Step-by-step explanation:

A) To find expected difference of cost of medical care for dogs and cats we can simply subtract average costs of cats and dogs.

[tex]120-100=20[/tex]

Expected difference will be 20$.

B) To find the standard deviation of that difference, we need to square deviations and add them and square root it again.

[tex]\sqrt{(30^2+35^2)} =46,1[/tex]

Expected difference will be 46,1$.

C)We need to find the Z value to find the probability of more expensive dogs than cats in a Vet vise.[tex]Z=(0-20)/46,1=-0,434[/tex]

Z value of the function is -0,434

From the Z table that you can find at the attachment. The probability is %33,36 or 0,3336

D) This is a subjective part. I don't have any concerns

answer: 0.69

answer explanation:

to start take 1.38 and 1.11 and subtract to find a price of a plum which is 0.27 since 1.38 have a extra plum then take 1.11 and take away 0.27 from 1.11 and get 0.84 then divide by 2 and get 0.42 so a apple cost 0.42 and a plum cost 0.27 together cost 0.69 which is nice

To find the cost of 1 apple and 1 plum, set up and solve a system of equations based on the given costs of different fruit combinations.

To solve this problem, we need to set up a system of equations:

Answer:

114

Step-by-step explanation:

z = (x − μ) / σ

0.93 = (x − 100) / 15

x ≈ 114

Answer:

The supply and demand curves will shift to the left i.e. there will be a decrease in demand and supply.

Step-by-step explanation:

First: Tax is a compulsory contribution to state revenue, levied by the government on workers' income and business profits, or added to the cost of some goods, services, and transactions.

Secondly: Money supply is the total amount of monetary assets available in an economy at a specific time.

When tax is increased, this means individuals and businesses have to contribute more to the state revenue leaving both categories with lesser income or profit i.e. lesser to spend.

In the same way, when money supply decreases, there is lesser money available to both individuals and businesses

What this implies is that demand will decrease because income has decreased. Supply will also decrease because producers will not make as much profit given the increase in tax (tax is considered cost of production).

As a result of this, the demand curve shifts to the left, the supply curve also shift to the left because both demand and supply will decrease.

Answer:

[tex]\frac{25}{102}[/tex].

Step-by-step explanation:

Total number of cards in a deck = 52

number of black cards in a deck = 26

Find the probability that both cards are black (without replacement).

Therefore, both events are dependent.

The probability of first card is black = [tex]P_{1}=\frac{26}{52}[/tex]

the probability of second card is black = [tex]P_{2}=\frac{25}{51}[/tex]

[tex]P=\frac{26}{52}[/tex] × [tex]=\frac{25}{51}[/tex]

   = [tex]\frac{1}{2}[/tex] × [tex]\frac{25}{51}[/tex]

   = [tex]\frac{25}{102}[/tex]

The probability that both cards are black is [tex]\frac{25}{102}[/tex].

The probability that both cards picked without replacement are black is [tex] \frac {25}{102}[/tex]

Number of black cards in deck = 26

Total number of cards = 52

Recall :

Probability = (required outcome / Total possible outcomes)

Therefore,

Ist pick :

P(black card) = 26/52

Number of black cards left = 26 - 1 = 25

Total number of cards left = 52 - 1 = 51

2nd pick:

P(black card) = 25 / 51

Therefore, probability that both cards are black is ;

[tex]P(Both \: black) = \frac{26}{52} \times \frac{25}{51} = \frac {25}{102}[/tex]

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Answer:

  y = 33°

Step-by-step explanation:

The left side and the right side are parallel, so the angles marked y and 33° are alternate interior angles, hence congruent.

  y = 33°

Answer:

165 Hamburgers

Step-by-step explanation:

330 divided by 2 is 165

Answer:

The number of cans that he will need to cover the court is 12 cans

Step-by-step explanation:

The court is in the shape of a rectangle. Its length is 54 feet and its width is 30 feet. The formula for the area of a rectangle is expressed as length × width. Therefore, the area of the wooden floor is

54×30 = 1620 square foot

Suppose each can of wood stain covers 135 square feet, the number of cans that would cover the rectangular floor of the court would be

1620/135 = 12

Answer:

lt is the graph of x2+3x-4

Answer:

See Graph

Step-by-step explanation:

Find the Solution for

1x2+3x−4=0

using the Quadratic Formula where

a = 1, b = 3, and c = -4

x=−b±sqrtb^2−4ac/2a

x=−3±sqrt3^2−4(1)(−4/2(1)

x=−3±sqrt9−−16/2

x=−3±sqrt25/2

Simplify the Radical:

x=−3±sqrt5/2

We get x=22x=−82

which becomes

x=1

x=−4

Here is the graph:

Final answer:

About 95% of households would typically be expected to have a number of cars within 2 standard deviations of the mean, as per the empirical rule for a normal distribution.

Explanation:

The question, in a broad sense, relates to the concept of a probability distribution, specifically to the normal distribution and the empirical or 68-95-99.7 rule. To answer the question about the percentage of households with a number of cars within 2 standard deviations of the mean, one needs to apply the properties of the normal distribution. Typically, about 95% of observations can be found within 2 standard deviations of the mean on a normal distribution. However, to be precise for this case, one would calculate the mean (μ) and standard deviation (σ) of the given probability distribution, then sum the probabilities of the random variable X falling between μ - 2σ and μ + 2σ to find the desired percentage of households.

About 93% of households have a number of cars within 2 standard deviations of the mean.

To determine the percentage of households that have a number of cars within 2 standard deviations of the mean, we need to perform the following steps:

       [tex]\mu = \sum xP(X=x)[/tex]

       [tex]\mu = 0(0.09) + 1(0.36) + 2(0.35) + 3(0.13) + 4(0.05) + 5(0.02) = 1.75[/tex]

       [tex]\sigma^2 = \sum (x - \mu)^2 P(X=x)\\\sigma^2 = (0 - 1.82)^2(0.09) + (1 - 1.82)^2(0.36) + (2 - 1.82)^2(0.35) + (3 - 1.82)^2(0.13) + (4 - 1.82)^2(0.05) + (5 - 1.82)^2(0.02) = 1.1675[/tex]

       [tex]\[\sigma = \sqrt{1.0764} \approx 1.0805[/tex]

      The range is from μ - 2σ to μ + 2σ.

       μ - 2σ =  1.75 - 2(1.0805) ≈ -0.411

       μ + 2σ = 1.75 + 2(1.0805) ≈ 3.911

      Since the number of cars cannot be negative, the range is from 0 to 3.911 (practically up to 3 cars).

      0.09 + 0.36 + 0.35 + 0.13 = 0.93

Thus, about 93\% of households have a number of cars within 2 standard deviations of the mean.

Complete question:

Choose an American household at random and let the random variable X be the number of cars (including SUVs and light trucks) they own. Given is the probability distribution if we ignore the few households that own more than 5 cars.

Number of cars:   0\\       1 \\      2\\      3 \\     4\\       5

Probability:        0.09 \\ 0.36\\ 0.35\\ 0.13\\ 0.05\\ 0.02

About what percentage of households have a number of cars within 2 standard deviations of the mean?

Answer:

340 ft²

Step-by-step explanation:

perimeter of rectangle = 2 x (L+W) = 2L + 2W = 74 .....(1)

cost of two length : $1 x 2L

cost of two width: $3.50 x 2W

($1 x 2L) + ($3.50 x 2W) = $159

2L + 7W = 159 ....... (2)

(2) - (1) ...  5W = 85

W = 17

L = (74 - 2 x 17) / 2 = 20

dimension = 17 x 20 = 340 ft²

The dimensions of the rectangular lot are 162.67 feet by 325.34 feet. The perimeter equation is 2L + 2W = 74. The cost equation is L + 3.50W = 159.

Let's say the length of the rectangular lot is L feet and the width is W feet.

The perimeter of a rectangle can be defined as: 2L + 2W.

According to the question, the perimeter is 74 feet, so we can write the equation as: 2L + 2W = 74.

The cost of fencing along the two lengths is $1 per foot, so the cost for the length fencing is 1 * L dollars.

The cost of fencing along the two widths is $3.50 per foot, so the cost for the width fencing is 3.50 * W dollars.

The total cost of fencing is $159, so we can write the equation as: 1 * L + 3.50 * W = 159.

Now we have two equations:

2L + 2W = 74

L + 3.50W = 159

To solve these equations, we can use substitution or elimination method.

Let's use the elimination method:

This simplifies to: 1.50W = 244.

Divide both sides by 1.50: W = 244 / 1.50 = 162.67 feet.

Plug this value back into the first equation to find L: 2L + 2(162.67) = 74.

Simplify: 2L + 325.34 = 74.

Subtract 325.34 from both sides: 2L = -251.34.

Divide both sides by 2: L = -251.34 / 2 = -125.67 feet.

Since the dimensions of the lot cannot be negative, we discard the negative value.

Therefore, the dimensions of the lot are 162.67 feet by 325.34 feet.

Tim has 84 more postcards than Paul.

Step-by-step explanation:

Given,

Total number of postcards = 280

Let,

Tim's share of postcards = x

Shawn's share of postcards = [tex]\frac{3}{5}\ of\ Tim's\ share[/tex] = [tex]\frac{3}{5}x[/tex]

Paul's share of postcards = [tex]\frac{2}{3}\ of\ Shawn's=\frac{2}{3}(\frac{3}{5}x)=\frac{2}{5}x[/tex]

According to given statement;

[tex]x+\frac{3}{5}x+\frac{2}{5}x=280[/tex]

Taking LCM

[tex]\frac{5x+3x+2x}{5}=280\\\\\frac{10x}{5}=280\\\\2x=280[/tex]

Dividing both sides by 2

[tex]\frac{2x}{2}=\frac{280}{2}\\x=140[/tex]

Paul's share = [tex]\frac{2}{5}x=\frac{2}{5}(28)=56[/tex]

Difference = Tim's share - Paul's share

Difference = 140 - 56 = 84 cards

Tim has 84 more postcards than Paul.

Keywords: addition, fraction

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Answer:

Step-by-step explanation:

Set this up as a proportion.  The idea is that if we can find out the number of "no" votes based on the ratio of 5:7, then we can add the "no" votes to the number of "yes" votes to get the total number of votes.

[tex]\frac{yes}{no}:\frac{5}{7}=\frac{3710}{x}[/tex]

Cross multiply to get

5x = 25790 so

x = 5194 "no" votes.

5194 + 3710 = 8904 total votes

Answer:

D. [tex]y<\frac{2}{3}x-4\ and\ y\geq-2x+2[/tex]

Step-by-step explanation:

Given:

Let us find the equations of the lines from the graph.

First let us determine the equation of the broken line.

The slope of the broken line is positive as 'y' values increases with increase in 'x'. The slope is the ratio of the absolute value of y-intercept to that of the x-intercept.

x-intercept = 6, |y-intercept| = |-4| = 4

So, [tex]m=\frac{4}{6}=\frac{2}{3}[/tex]

Now, equation of a line with slope 'm' and y -intercept 'b' is given as:

[tex]y=mx+b[/tex]

Here, [tex]m=\frac{2}{3},b=-4[/tex].So, equation of the broken line is:

[tex]y=\frac{2}{3}x-4[/tex]

Now, from the graph, the solution is below the broken line. So, the equality sign is replaced by the less than inequality sign. So,

[tex]y<\frac{2}{3}x-4[/tex]

Now, let us determine the equation of the other line.

y-intercept, [tex]b = 2[/tex], x-intercept = 1

Slope is negative as 'y' decreases with increase in 'x'. So,

Slope, [tex]m=-\frac{2}{1}=-2[/tex]

Now, equation is given as:

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

From the graph, the solution region is to the left of the line. So, the 'equal to' sign is replaced by the 'greater than or equal to' sign' as the line is also included in the solution region. So, the inequality becomes:

[tex]y\geq-2x+2[/tex]

Therefore, the last option is correct.

[tex]y<\frac{2}{3}x-4\ and\ y\geq-2x+2[/tex]

Answer: The number of ways would be 36,036.

Step-by-step explanation:

Since we have given that

Number of white light bulbs = 5

Number of orange light bulbs = 6

Number of blue light bulbs = 2

Total number of light bulbs = 13

So, the number of distinct orders of light bulbs if two bulbs of the same color are considered identical.

[tex]N=\dfrac{n!}{r!}\\\\N=\dfrac{13!}{5!\times 6!\times 2!}\\\\N=36036[/tex]

Hence, the number of ways would be 36,036.

The number of different orders in which Raina can put the colored light bulbs into a string is 1,324, calculated using the formula of permutations with indistinguishable items.

The question is about the number of different possible arrangements, or combinations, of the colored light bulbs. Since all light bulbs of the same color are identical, this is a problem of permutations with indistinguishable items. The formula to calculate this is n!/(r1!*r2!*...*rn!), where n is the total number of items, and r1, r2,...,rn are the number of each type of identical items.

So in this case, there are 13 colored light bulbs in total (n=13), with 5 white light bulbs (r1=5), 6 orange light bulbs (r2=6), and 2 blue light bulbs (r3=2).

The total different orders of light bulbs can be found by calculating 13!/(5!*6!*2!) = 1,324 possibilities.

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Answer:

  j = -2

Step-by-step explanation:

It usually works well to start by eliminating parentheses.

  15j +6 = 6j -12

Now you can subtract 6j from both sides to get the variable term on one side of the equation only:

  9j +6 = -12

And you can subtract 6 from both sides to get the variable term by itself:

  9j = -18

Now, dividing by the coefficient of the variable gives you the solution:

  j = -2

The solution is j = -2.

Answer:

j = -2

Step-by-step explanation:

3 (5j + 2) = 2 (3j - 6)

15j + 6 = 6j - 12

15j - 6j = - 12 - 6

9j = - 18

j = - 18/9

j = - 2

Answer:

C

Step-by-step explanation:

One angle is larger than other from the SAS Inequality Theroem that state that if two congruent sides are congruent, then one of the included angle is greater than the other

Answer

m< 1 > m < 2.

Step-by-step explanation:

< 1 is opposite the longer side.

Answer:

53

Step-by-step explanation:

Answer:

Step-by-step explanation:

The slope of the line needs to be determined first:

[tex]m=\frac{-9+-5}{-12+-8}=\frac{-14}{-20}=\frac{7}{10}[/tex]

Now let's use that and one of the coordinates to write an equation in point-slope form:

[tex]y-5=\frac{7}{10}(x-8)[/tex]

and, simplifying,

[tex]y-5=\frac{7}{10}x-\frac{56}{10}[/tex]

Now let's multiply everything by 10 to get rid of the fractions:

10y - 50 = 7x - 56

and

-7x + 10 y = -6

Apparently, they do not like to lead with negatives, which is not uncommon:

7x - 10y = 6

So his model is not correct.

Answer:

The average rate of change is $25.5 per hour, option B.

Step-by-step explanation:

Average Rate of Change

When we are explicitly given some function C(x), we sometimes need to know the rate of change of C when x goes from [tex]x=x_1[/tex] to [tex]x=x_2[/tex]. It can be computed as the slope of a line .

[tex]\displaystyle m=\frac{C(x_2)-C(x_1)}{x_2-x_1}[/tex]

The provided function is

[tex]C(x)=25.50x + 50[/tex]

We are required to compute the average rate of change between the points

[tex]x_1=3\ ,\ x_2=9[/tex]

Let's compute

[tex]C(3)=25.50(3) + 50=126.5[/tex]

[tex]C(9)=25.50(9) + 50=279.5[/tex]

[tex]\displaystyle m=\frac{279.5-126.5}{9-3}[/tex]

[tex]\displaystyle m=\frac{153}{6}=25.5[/tex]

The average rate of change is $25.5 per hour, option B.

Answer:

4 trays should he prepared, if the owner wants a service level of at least 95%.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 5

Standard Deviation, σ = 1

We are given that the distribution of demand score is a bell shaped distribution that is a normal distribution.

Formula:

[tex]z_{score} = \displaystyle\frac{x-\mu}{\sigma}[/tex]

P(X > x) = 0.95

We have to find the value of x such that the probability is 0.95

P(X > x)  

[tex]P( X > x) = P( z > \displaystyle\frac{x - 5}{1})=0.95[/tex]  

[tex]= 1 -P( z \leq \displaystyle\frac{x - 5}{1})=0.95 [/tex]  

[tex]=P( z \leq \displaystyle\frac{x - 5}{1})=0.05 [/tex]  

Calculation the value from standard normal z table, we have,  

[tex]\displaystyle\frac{x - 5}{1} = -1.645\\x = 3.355 \approx 4[/tex]  

Hence,  4 trays should he prepared, if the owner wants a service level of at least 95%.

Answer:

[tex]x^3+2x^2-5x-6=\left(x+1\right)\left(x-2\right)\left(x+3\right)[/tex].

Step-by-step explanation:

To find [tex]\frac{x^{3} + 2 x^{2} - 5 x - 6}{x + 1}[/tex] using synthetic division you must:

Write the problem in a division-like format. To do this:

Take the constant term of the divisor with the opposite sign and write it to the left.

Write the coefficients of the dividend to the right.

[tex]\begin{array}{c|cccc}&x^{3}&x^{2}&x^{1}&x^{0}\\-1&1&2&-5&-6\\&&\\\hline&\end{array}[/tex]

Step 1: Write down the first coefficient without changes:

[tex]\begin{array}{c|rrrr}-1&1&2&-5&-6\\&&\\\hline&\1\end{array}[/tex]

Step 2:

Multiply the entry in the left part of the table by the last entry in the result row.

Add the obtained result to the next coefficient of the dividend, and write down the sum.

[tex]\begin{array}{c|rrrr}-1&1&2&-5&-6\\&&\left(-1\right) \cdot 1=-1\\\hline&{1}&{2}+\left({-1}\right)={1}\end{array}[/tex]

Step 3:

Multiply the entry in the left part of the table by the last entry in the result row.

Add the obtained result to the next coefficient of the dividend, and write down the sum.

[tex]\begin{array}{c|rrrr}{-1}&1&2&{-5}&-6\\&&-1&\left({-1}\right) \cdot {1}={-1}\\\hline&1&{1}&\left({-5}\right)+\left({-1}\right)={-6}\end{array}[/tex]

Step 4:

Multiply the entry in the left part of the table by the last entry in the result row.

Add the obtained result to the next coefficient of the dividend, and write down the sum.

[tex]\begin{array}{c|rrrr}{-1}&1&2&-5&{-6}\\&&-1&-1&\left({-1}\right) \cdot \left({-6}\right)={6}\\\hline&1&1&{-6}&\left({-6}\right)+{6}={0}\end{array}[/tex]

We have completed the table and have obtained the following resulting coefficients: 1, 1, −6, 0.

All the coefficients except the last one are the coefficients of the quotient, the last coefficient is the remainder.

Thus, the quotient is [tex]x^{2}+x-6[/tex], and the remainder is 0.

[tex]\frac{x^{3} + 2 x^{2} - 5 x - 6}{x + 1}=x^{2} + x - 6+\frac{0}{x + 1}=x^{2} + x - 6[/tex]

Now, we factor [tex]x^{2}+x-6[/tex]

[tex]\left(x^2-2x\right)+\left(3x-6\right)\\x\left(x-2\right)+3\left(x-2\right)\\\left(x-2\right)\left(x+3\right)[/tex]

Therefore,

[tex]x^3+2x^2-5x-6=\left(x+1\right)\left(x-2\right)\left(x+3\right)[/tex]

Answer:

The length of the mid-segment of the trapezoid = 7

==================================================

Step-by-step explanation:

The mid-segment of a trapezoid is the segment that connecting the midpoints of the two non-parallel sides.

As shown in the figure the two non-parallel sides are AB and CD

∴ The mid-segment of the trapezoid = [tex]\frac{BC +AD}{2}[/tex]

From the figure: BC = 8  and AD = 6

∴ The mid-segment of the trapezoid = [tex]\frac{8+6}{2} = 7[/tex]

Answer:

1. 9 hours      2. $377     3. 48 hours     4. 235 feet

Step-by-step explanation:

In all cases below, let x represent the variable sought for.

1: 2x/5=3.6,

x=5/2 *3.6=9 hours

2. x-83=294

x=83+294=377

3. x+x/3=4x/3=64

x=64*3/4=48 hours

4. If the gardenview hotel's height  is x, then (x+17)/2 will be the height of the Plaza Hotel.

The combined height  will be x + (x+17)/2 = 361 feet

Multiplying by 2 across board,

2x+x+17=722

3x+17=722

3x =722-17=705

x=705/3=235m

Answer:

It is A. my friend

Step-by-step explanation:

Answer:

7-9

Step-by-step explanation:

Sebastian goes up from 0 by 7 floors. Then, he goes down by 9.