please help for 20 points

Answer:

(2,-3)

x=2   y=-3

Step-by-step explanation:

2x+y=1         y=1-2x

3x+2y=0

3x+2(1-2x)=0

3x+2-4x=0

-x+2=0

-x=-2

x=2

2x+y=1

2(2)+y=1

4+y=1

y=-3

Answer:

x=29

Step-by-step explanation:

isolate x, and multiply the 29 by -1

Answer: 315 inches

180×.75=135

180+135=315

I hope this is good enough:

The length of the truck is 315 inches.

Given the following data:

To find the length of the truck:

Translating the word problem into an algebraic expression, we have;

75% of C = \(\frac{75}{100}\) × \(180\)

= \(75\) × \(1.8\)

75% of C = 135 inches

Now, we can find the length of the truck:

\(T = 135 + C\\\\T = 135 + 180\)

Length of truck = 315 inches

Therefore, the length of the truck is 315 inches.

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The domain is the set of x-values for the points on the graph:

{-5, -3, 1, 2, 3}

Answer:

9 gallons will cost $13.50

Step-by-step explanation:

1 gallon = $1.50

1.50 x 9 = 13.50

or

3 gallons = $4.50

4.50 x 9 = 13.50

Answer:

13.5 dollars.

Step-by-step explanation:

4.50 times 3 is 13.5 dollars.

Have A Good Day!!! :)

A triangle has three bisectors, each of which is a line that divides one of the angles of the triangle into two equal parts.The incenter is equidistant from the three sides of the triangle and is the center of the inscribed circle, which is the circle that is tangent to all three sides of the triangle.

A triangle is a two-dimensional geometric shape that has three straight sides and three angles. It is one of the simplest and most fundamental shapes in geometry, and it is widely studied in mathematics, science, and engineering. Triangles can have different types of angles and sides, which give rise to various classifications and properties. For example, a triangle can be classified as equilateral (all sides and angles are equal), isosceles (two sides and two angles are equal), or scalene (all sides and angles are different).

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Answer: Plot 2

Step-by-step explanation:

The representation for Ten factorial or 10! is -

Option B: 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

What is factorial?

Factorial in mathematics is a straightforward concept. Factorials are only products. The factorial is indicated by an exclamation point. The natural numbers that are more than it are multiplied by all the natural numbers that are less than it to get the factor.

The correct representation of 10! (10 factorial) is B. 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1.

Factorial is a mathematical operation denoted by an exclamation mark (!), and it represents the product of all positive integers from 1 up to the given number.

For example, 5! (read as "5 factorial") is equal to 5 × 4 × 3 × 2 × 1 = 120.

Therefore, 10! is equal to 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1, which is the product of all positive integers from 1 to 10.

Option A represents the descending order of integers from 10 to 1, while

Option C represents the sum of integers from 1 to 10, neither of which is the correct representation of 10!.

Therefore, the correct representation is option B.

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Answer:

part a is a and c

part b is sine

Step-by-step explanation:

I hope this helped :)

Answer:

7/x+2

Step-by-step explanation:

2x +7/x

hope this helps

IT IS OVER ALL NOT ONLY 7!!!!!!!

Answer: x = 20

Step-by-step explanation:

We can use the pythagorean theorem:

x^2 + 15^2 = 25^2

x^2 + 225 = 625

We can subtract 225 from both sides:

x^2 = 400

We can take the square root of both sides:

x = 20.

Answer:

The answer is 900

good luck

Answer:

c and e

Step-by-step explanation:

A 96% confidence interval for the mean difference in textbook prices at the two online bookstores is (3.22,8.38).

What is a confidence interval?

An estimated range for an unknown parameter is known as a confidence interval. The 95% confidence level is the most popular, however other levels, such as 90% or 99%, are occasionally used when computing confidence intervals.

Here, we have

The mean and standard deviation are M = 5.8 and s = 4.658

To calculate the estimated standard error, we apply

S = \(\sqrt{s^2/n}\)

 =\(\sqrt{4.658^2/5}\)

= 2.08

The 96% confidence interval is :

CI = x ±t₉₆s/√n

= 5.8 ±2.7764× 2.08/√5

= 5.8±2.58

= (3.22,8.38)

Hence, a 96% confidence interval for the mean difference in textbook prices at the two online bookstores is (3.22,8.38).

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Answer:

C.

Step-by-step explanation:

In the absence of price discrimination, the profit-maximizing conditions would be different, and the resulting prices, quantities, total revenue, total cost, and profit would also be different.

To find the profit-maximizing conditions with third-degree price discrimination, we need to equate the marginal revenue (MR) to the marginal cost (MC) for each market segment.

Given the demand equations and the total cost function:

Market 1: Q1 = 160 - 10P1 or P1 = 16 - 0.1Q1

Market 2: Q2 = 200 - 20P2 or P2 = 10 - 0.05Q2

Total Cost: TC = 120 + 4Q

To find the profit-maximizing prices and quantities, we equate MR to MC for each market segment:

MR1 = MC:

16 - 0.2Q1 = 4

0.2Q1 = 12

Q1 = 60

MR2 = MC:

10 - 0.1Q2 = 4

0.1Q2 = 6

Q2 = 60

Substituting the quantities back into the demand equations, we find:

P1 = 16 - 0.1(60) = 10

P2 = 10 - 0.05(60) = 7

The total revenue (TR) can be calculated by multiplying the price by the quantity for each market segment:

TR = P1 * Q1 + P2 * Q2

TR = (10 * 60) + (7 * 60)

TR = 600 + 420

TR = 1020

The total cost (TC) is given by the total cost function:

TC = 120 + 4Q

TC = 120 + 4(60 + 60)

TC = 120 + 480

TC = 600

Finally, the profit (π) can be calculated by subtracting total cost from total revenue:

π = TR - TC

π = 1020 - 600

π = 420

In the absence of price discrimination, the profit-maximizing conditions would be different, and the resulting prices, quantities, total revenue, total cost, and profit would also be different.

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Answer:

20n² - 40n + 20

Step-by-step explanation:

(5n - 5)(4n - 4)

= 5n(4n) + 5n(-4) - 5(4n) - 5(-4)

= 20n² - 20n - 20n + 20

= 20n² - 40n + 20

Another way to do this:

(5n - 5)(4n - 4)

= 5(n - 1) * 4(n - 1)

= 20(n - 1)(n - 1)

= 20(n - 1)²

= 20(n² - 2n + 1)

= 20n² - 40n + 20

2.) Lateral area of pyramid = 20.1 cm²

total area = 55.1cm²

For question 2.)

Lateral area = 1/2bl

The base (b) = 6 cm

length (l)= x

but X = Pythagorean formula = c² = a²+b²

X= a = c²-b²

a= 9²-6²

a²= 81-36

a² = 45

a= √45

a= 6.7= length

lateral area = 1/2×6×6.7

= 20.1cm²

Total area = LA +S²√3/4

s= 9cm

LA = 27cm²

Total area = 20.1 + 9²√3/4

= 20.1+81×1.732050807/4

= 20.1+ 35 = 55.1cm²

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Answer:

they are supplementary set the equal to 180 so angle 1 would be 112

Answer:

184 in

Step-by-step explanation:

could you also mark me as brainliest?

Answer:

A≈169.84

Step-by-step explanation:

i belive

Therefore, according to the squeeze theorem, the limit of x^2 cos(1/x^2) as x approaches 0 is also 0: lim(x→0) x^2 cos(1/x^2) = 0.

To prove that lim(x→0) x^2 cos(1/x^2) = 0, we can use the squeeze theorem.

First, we establish the following inequalities:

-1 ≤ cos(1/x^2) ≤ 1

Since -1 ≤ cos(1/x^2) ≤ 1 for all values of x, we can multiply each side of the inequality by x^2 to obtain:

-x^2 ≤ x^2 cos(1/x^2) ≤ x^2

Now, we need to evaluate the limits of the lower and upper bounds as x approaches 0:

lim(x→0) -x^2 = 0

lim(x→0) x^2 = 0

Since both lower and upper bounds approach 0 as x approaches 0, we can conclude that the function x^2 cos(1/x^2) is "squeezed" between these two functions.

Thus, the statement is proven.

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Answer:

4 hours per each room for 5 people

Step-by-step explanation:

The continuous compounding equation shown the value of the account after t years is given as follows:

\(A(t) = 8000e^{0.079t}\)

The percentage of growth per year (APY) is of 8.22%.

The balance of an account after t years of continuous compounding is given by the equation presented as follows:

\(A(t) = A(0)e^{kt}\)

In which the variables of the equation are described as follows:

In the context of this problem, the values of these parameters are given as follows:

A(0) = 8000, k = 0.079.

Hence the equation is:

\(A(t) = 8000e^{0.079t}\)

The percentage of growth per year (APY) is calculated as follows:

\(e^{k} - 1 = e^{0.079} - 1 = 1.0822 - 1 = 0.0822 = 8.22\%\)

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Answer:

x = -5

Step-by-step explanation:

2x = -10 <== divide both sides by 2

/2      /2

x = -5

Check your work:

2x = -10

2(-5) = -10

-10 = -10

This statement is true

Hope this helps!

The final answers are given below

\(10.\)L

\(11.\) \(3\) (the number should be \(1,000,000\), which has six zeros)

\(00000\)

\(12\)  | |

\(00000\)

|

\(00000\)

\(15. 31 16 48 29 53 47 22 37 98 26 2025\)

A number is an arithmetic value that is used to calculate and represent a quantity.

The numbers that are more than \(20\) but less than \(30\) are \(22\) and \(26\), so they should be crossed out:

\(31 16 48 29 53 47\) X \(37 98\) X \(2025\)

Therefore the answers are given below.

\(10.\)L

\(11.\) \(3\) (the number should be \(1,000,000\), which has six zeros)

\(00000\)

\(12\)  | |

\(00000\)

|

\(00000\)

\(15. 31 16 48 29 53 47 22 37 98 26 2025\)

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The prοvided sentence indicates that the trigοnοmetry ratiο is 7/24.

This is due tο the fact that trigοnοmetry is still regarded as a very challenging and cοmplex branch οf mathematics in cοmparisοn tο οther branches. When studying geοmetry, students frequently run intο mistakes, misunderstandings, and barriers.

Use the ratiο οf trigοnοmetry as

Here,

Perpendicular = 14

Base = 48

tan A = 14/48

tan A = 7/24

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Answer:

yes

Step-by-step explanation:

3x=-9

3x/3  -9/3

x=-3

4x=-12

4x/4   -12/4

x=-3

ps i need brainliest so... plzzz

Answer:

B) 50%

Step-by-step explanation:

It says or so it includes both as a probability, since drawing one of the four suits is 25% adding them together would increase the probability for two either two suits to 50%