NO LINKS!! Help me with these 2 column proofs 8aa​

The figure has three planes with three system of linear equations and three variables, we would definitely have three solutions

System of linear equations is the set of two or more linear equations involving the same variables. Here, linear equations can be defined as the equations of the first order, i.e., the highest power of the variable is 1. Linear equations can have one variable, two variables, or three variables. Thus, we can write linear equations with n number of variables.

In the given problem, we have a figure with three planes and it is a three variable system of linear equation.

Assuming the planes are x, y and z, we would expect three solutions because we have three variables.

Looking at the image again, from the three system of linear equations with three variables, we will have three solutions.

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Point (4,4) is the only ordered pair that satisfies both equations y = (1/4) x + 3 and y = 2x - 4.

An equation is a combination of different variables, in which two mathematical expressions are equal to each other.

In the given graph,

The point (4, 4) is the intersection point of the lines.

Since, the point (4, 4) is intersection point,

Therefore, this point will satisfy the equations of line.

From the options, take equations,

y = (1/4) x + 3

Substitute x = 4 and y = 4

4 = (1/4) 4 + 3

4 = 4

y = 2x - 4

Substitute x = 4 and y = 4

4 = 2 × 4 - 4

4 = 4

The point (4,4) satisfies both the equations.

Therefore, (4,4) is the only ordered pair that satisfies both equations y = (1/4) x + 3 and y = 2x - 4.

Option (C) is correct option.

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The list of all probabilities from first to last are 0.5, 0.5, 0.2, 0.4, 0.5,

and 0.2.

Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.

There are a total of 6 possibilities when rolling a die and of which three are even numbers.

P(rolling an even number is) = 3/6 = 1/2 0.5.

There are two possibilities when flipping a coin,

∴ The probability of getting a head is (1/2) = 0.5.

There are a total of (1 + 1 + 3) = 5 possibilities of choosing a block out of which one is red, therefore the probability of choosing a red is = (1/5) = 0.2.

Total 10 marbles and 4 blue marbles, hence the probability of choosing a blue marble is (4/10) = 2/5 = 0.4.

There are a total of 8 balls out of which 4 are soccer balls, hence the probability of choosing a soccer ball is = 4/8 = 1/2 = 0.5.

Total 15 balls out of which 3 tennis balls hence the probability of choosing a tennis ball is = 3/15 = 0.2.

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There are 320 engines must be made to minimize the unit cost.

Expression in math's is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Given that;

The unit cost is given by the function,

⇒ C(x)= 0.3x²- 192x + 47,470

Now,

Since, The unit cost is given by the function,

⇒ C(x)= 0.3x²- 192x + 47,470

Hence, We get;

⇒ dC/dx = 0.6x - 192

Put dC/dx = 0

⇒ 0 = 0.6x - 192

⇒ 0.6x = 192

⇒ x = 320

And, d²C/dx² = - 192 < 0

Hence, This gives the maximum value.

So, The number of engines which must be made to minimize the unit cost = 320

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a) The 95% confidence interval estimate for the population mean spending by a customer on visiting salon per month is given as follows: (747, 853).

b) The sampling error at 95% confidence level is of: $35.78.

The bounds of the confidence interval are given as follows:

[tex]\overline{x} \pm z\frac{\sigma}{\sqrt{n}}[/tex]

In which:

The parameters for this problem are given as follows:

[tex]\overline{x} = 800, \mu = 200, n = 55, z = 1.96[/tex]

Hence the lower bound of the interval is of:

800 - 200 x 1.96/square root of 55  = 747.

The upper bound of the interval is of:

800 + 200 x 1.96/square root of 55  = 853.

The sampling error for a sample size of 120 is calculated as follows:

200 x 1.96/square root of 120 = $35.78.

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Answer:

y = [tex]-\frac{1}{3}[/tex]x + 2

Step-by-step explanation:

Find the reciprocal change the sign of the gradient (m=3):

[tex]-\frac{1}{3}[/tex]

so

y = [tex]-\frac{1}{3}[/tex]x + c

The intersect is 2, so c = 2

Final answer: y = [tex]-\frac{1}{3}[/tex]x + 2

Answer:

12

X

7

Step-by-step explanation:

Answer:

Then it is a circle!

Answer:

To simplify this expression, we need to combine like terms. To do that, we need to combine terms that have the same variables raised to the same powers.

First, we will combine the terms in the first set of parentheses:

(4m²n² + 6m²n)

We see that the terms have the same variables, m and n, and the same powers, 2 and 1, respectively. We can combine these terms by adding their coefficients:

(4m²n² + 6m²n) = (4 + 6)m²n = 10m²n

Next, we will combine the terms in the second set of parentheses:

(8m²n^ - 7m²n² - 13m²n)

In this case, we see that the first two terms have the same variables and powers, so we can combine them by adding their coefficients:

(8m²n^ - 7m²n² - 13m²n) = (8 - 7)m²n^ - 13m²n = m²n^ - 13m²n

We can then combine the remaining term with the first term in the expression:

m²n^ - 13m²n + 10m²n = m²n^ + (-13 + 10)m²n = m²n^ - 3m²n

Finally, we will combine the terms in the third set of parentheses:

(14m²n - 2m^n² + 9m²n)

In this case, we see that the first two terms have the same variable and power for the m variable, but the powers of the n variable are different. Since we cannot combine these terms, we will need to leave them as is. We can, however, combine the remaining term with one of the other terms:

(14m²n - 2m^n² + 9m²n) = 14m²n - 2m^n² + (9 + (-14))m²n = 14m²n - 2m^n² - 5m²n

We can then combine this expression with the previous one:

14m²n - 2m^n² - 5m²n + m²n^ - 3m²n = (14 - 1)m²n - 2m^n² - (5 - 3)m²n = 13m²n - 2m^n² - 2m²n

Finally, we have simplified the expression as much as possible:

(4m²n² + 6m²n) - (8m²n^ - 7m²n² - 13m²n) - (14m²n - 2m^n² + 9m²n) = 13m²n - 2m^n² - 2m²n

The area of the sector and length of the arc are 4.7 unit squared and 3.14 units respectively.

A sector is a portion of a circle which is enclosed between its two radii and the arc adjoining them.

The area of sector of a circle is the amount of space enclosed within the boundary of the sector.

Therefore,

area of the sector = 1 / 2 r²∅

area of the sector = 1 / 2 × 3² × π / 3

area of the sector = 9π / 6

area of the sector = 3 / 2 × 3.14

area of the sector = 4.71 units²

Length of the arc = r∅

where

Therefore,

Length of the arc =  3 × π / 3

Length of the arc = π

Length of the arc = 3.14 units

Therefore, the area of the sector is 4.71 units² and the length of the arc is  3.14 units.

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Proportionately, the sorting machine will take 100 minutes (1 hour and 40 minutes) to process 720 tons if it takes 50 minutes to process 360 tons.

Proportion is the ratio or numerical relationship that one quantity bears to another.

Proportions are equated to each other to find missing variables.

Proportions are fractional values, usually depicted as fractions, decimals, or percentages.

The total number of oranges to sort = 720 tons

Machine processing speed = 360 tons per 50 minutes

Proportionately, the machine can process 7.2 tons per minute (360/50).

The time to sort 720 tons = 100 minutes (720/360 x 50) or (720/7.2)

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Answer:

∠ 2 = 66°

Step-by-step explanation:

∠ 1 and ∠ 2 are same- side interior angles and sum to 180° , then

∠ 2 + 114° = 180° ( subtract 114° from both sides )

∠ 2 = 66°

Factor the following questions is.6 m(x+2 n+2),

What is factor?

In mathematics, an integer m that can be multiplied by another integer to create n is known as a divisor of an integer n, also known as a factor of n. One can also state that n is a multiple of m in this situation.

[tex]6 x m+12 m+12 m n[/tex]

Factor out common term[tex]$6 m$ : $6 m(x+2+2 n)$[/tex]

[tex]\begin{aligned}& =6 m(x+2+2 n) \\& =6 m(x+2 n+2)\end{aligned}[/tex]

[tex]13 r+r+9 x r[/tex]

Add similar elements: [tex]$13 r+r=14 r$[/tex]

[tex]=14 r+9 x r[/tex]

[tex]15 x y+45 y+3 m y[/tex]

Factor out common term [tex]3y: $\quad 3 y(5 x+15+m)$[/tex]

[tex]\begin{aligned}& =3 y(5 x+15+m) \\& =3 y(5 x+m+15)\end{aligned}[/tex]

[tex]$7 m n+13 m n+8 m n$[/tex]

Add similar elements: [tex]$7 m n+13 m n+8 m n=28 m n$[/tex][tex]$=28 \mathrm{mn}$[/tex]

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The point zero represents option (A) the location of the starting line

Here, -35 represents the starting location of a race car that is 35 yards behind the starting line.

Therefore, the location of the starting line = starting location of a race car that is 35 yards behind the starting line + 35

Substitute the values in the equation

The location of the starting line =  -35 + 35

Add the numbers

= 0

The ending location of a race car = 35

Thar is 35 yards in front of the starting line

Therefore, the zero represents the location of the starting line

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Answer: the answer is try hard and if you don’t succeed try try again

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Angles in a triangle add to [tex]180^{\circ}[/tex].

[tex]7x+2+60+90=180 \\ \\ 7x+152=180 \\ \\ 7x=28 \\ \\ x=4[/tex]

Answer:

Step-by-step explanation:

Thank you

The solution is 120 ounces

An average man can lift the weight of $ 150 in quarters

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the total weight an average man can lift be = A

Now , the weight of an average quarter = 0.2 ounces

Now , Number of quarters in $ 1 = 4 quarters

Let the total amount be = $ 150

So , the number of quarters in $ 150 is given by the equation

Number of quarters in $ 150 = 150 x 4

Substituting the values in the equation , we get

Number of quarters in $ 150 = 600 quarters

And , the weight of 600 quarters = 600 x weight of an average quarter

Substituting the values in the equation , we get

Number of quarters in $ 150 = 600 quarters

The weight of 600 quarters = 600 x 0.2

The weight of 600 quarters = 120 ounces

Therefore , the value of A is 120 ounces

Hence , an average man can lift the weight of $ 150 in quarters

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Answer:

it is y=kx

Step-by-step explanation:

The cost of 6 bottle juice is $4.26.

What is cost?

A cost is the value of money that has been expended to produce something or provide a service and is therefore no longer available for use in production, research, retail, and accounting. In the case of an acquisition cost, the money spent on the acquisition is considered the cost.

Given:

Andrew buys 8 bottles of cranberry juice at the corner store for a total cost of $5.68.

So, the cost of each bottle is,

$5.68/8 = $0.71

Now to find the cost of 6 bottle of juice.

6 x $0.71 = $4.26

Hence, the cost of 6 bottle juice is $4.26.

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Answer: 34.44

Step-by-step explanation:

Answer:its d

Step-by-step explanation:

Answer:False

Its just simply incorrect

The expression of the inequality is -0.96 ≤ 0.3x and the solution will be x ≥ -3.2 thus, option (D) is correct.

A mathematical phrase in which the sides are not equal is referred to as being unequal. In essence, a comparison of any two values reveals whether one is less than, larger than, or equal to the value on the opposite side of the equation.

As per the given,

-0.96 ≤ 0.3x

Divide by 0.3 into both sides of the above equation,

-0.96/0.3 ≤ x

x ≥ -3.2

The number line goes from -3.2 to the positive or greater than -3.2 in the last option.

Hence "The solution of the inequality -0.96 ≤ 0.3x is x ≥ -3.2".

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The possible ethical issues of testing are given below.

What is drug?

Any chemical that, when consumed, alters the physiology or psychology of an organism qualifies as a drug. Usually, foods and other substances that support nutrition are distinguished from drugs.

(A)

Possible ethical problems: Since animals are able to perceive their surroundings, they have the right to exist free from human interference.

Therefore, animal research should not be done by humans. It is wrong to use animals only as stools to advance scientific understanding.

The right for an animal to live a full life without pain or suffering should be equal to that of humans.

Part B:

For the following reason, this is a bad assumption.

It does not follow that just because a drug causes the blood pressure levels in monkeys to return to normal after consumption that the drug will do the same for humans. This is because how humans and monkeys react to drugs differ.

Furthermore, it's unclear whether the drug's return to normal blood pressure was caused by it or by some other confounding variables that the researcher neglected to take into account.

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Answer:

y = - 0.5x + 8

Step-by-step explanation:

[tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]

[tex]\frac{7-4}{2-8}[/tex]

[tex]\frac{3}{-6}[/tex]

[tex]-\frac{1}{2}[/tex]

m = - 1/2

y = - 1/2x + b

4 = - 0.5(8) + b

4 = - 4 + b

b = 8

y = - 0.5x + 8

Answer:

write the equation of the line shown on the graph 0,3 3,1

Step-by-step explanation:

ano ba slope of variables

Answer:

  $20.07

Step-by-step explanation:

You want Marissa's total bill when she bought three cartons of ice cream at $4.59 each and two packages of plastic bowls at $3.00 each, with the plastic being taxed at 5%.

The amount for each item will be the product of the cost per unit and the number of units.

  ice cream total = 3 × $4.59 = $13.77

  plastic total = 2 × $3.00 = $6.00

The tax is applied only to the plastic, so the amount of tax is ...

  5% × $6.00 = $0.30

The total bill is the sum of the item costs and the tax:

  $13.77 +6.00 +0.30 = $20.07

Marissa's total bill was $20.07.

On solving the provided question, we can say that the probability that a 2 or 5 is NOT rolled is - 1- 1/3 = 2/3

A branch of mathematics called probability describes the likelihood that an event will occur or that a proposition is true. The probability of an event ranges from 1 to 1, with 1 indicating certainty and numbers in between indicating the difficulty of the event.

to determine the likelihood of rolling a die with a 2 or a 5 on it. The probability formula can be used to do this.

[tex]P(E) = (Number of times event occurs)/(Total number of trials)[/tex]

S = 1, 2, 3, 4, 5, 6 is a sample space of potential results when rolling a dice.

If the likelihood of rolling a die and having a result of 2 or 5 is event E.

Number of occurrences [n(E)] = 2

[n(S)] = 6 trials in all

[tex]P(E) = 2/6 = \frac{1}{3}[/tex]

So, the probability that a 2 or 5 is NOT rolled is - \

1- 1/3 = 2/3

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Answer: look it up how to pronounce the word

Step-by-step explanation: go to goggle translate or an app.