Select all of the equations that are true.

A823÷418=2110

B1112÷834=11135

C256÷314=319

D1223÷614=2275

E123÷112=1

Answer:

A.

it’s a because i just got it right on the test

Answer:

its A cause i got it right

Step-by-step explanation:

for the boys

For ð inputs, there can be an infinite number of subsets of those features. This is because a subset is a collection of some or all of the features within the inputs. Therefore, the number of possible subsets is determined by the number of possible ways in which we can choose from the available features.

For instance, if we have three features within an input, we can create subsets of one, two, or all three features. This gives us a total of seven possible subsets. However, this is not the only way in which we can create subsets. We can also create subsets that contain no features or any combination of features, which increases the number of possible subsets even further.

Therefore, the total number of possible subsets for ð inputs is limitless. It is important to note that not all subsets will be relevant or useful, but the more subsets we have, the more options we have for creating effective models or making informed decisions based on the inputs and features.

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For ð inputs, there can be an infinite number of subsets of those features. This is because a subset is a collection of some or all of the features within the inputs. Therefore, the number of possible subsets is determined by the number of possible ways in which we can choose from the available features.

For instance, if we have three features within an input, we can create subsets of one, two, or all three features. This gives us a total of seven possible subsets. However, this is not the only way in which we can create subsets. We can also create subsets that contain no features or any combination of features, which increases the number of possible subsets even further.

Therefore, the total number of possible subsets for ð inputs is limitless. It is important to note that not all subsets will be relevant or useful, but the more subsets we have, the more options we have for creating effective models or making informed decisions based on the inputs and features.

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The properties of exponents are (ab)^x = a^xb^x, b² × b^x = b^(2+x), and x⁻² = 1/x². Hence options A, D, E are correct.

What is the property of exponent?

When referring to a mathematical phrase that denotes that a number will be multiplied by itself n times, the terms power and exponent are frequently used interchangeably. That is a valid definition of power, however, in mathematics, the word exponent expressly refers to the amount. n that specifies the number of times it will be multiplied by itself.

There are six properties of the exponent. The properties are

Product of Powers (x^m)(x^n) = x^(m+n)

Power to a Power (x^m)^n = x^(mn)

Quotient of Powers (x^m)/(x^n) = x^(m-n)

Power of a Product (xy)^m = x^m× x^n

Power of a Quotient (x/y)^n = x^n/y^n

Negative exponent  x^(-n)= 1/x^n

According to the Power of a Product:

(ab)^x = a^xb^x

According to the Negative exponent:

7⁻³ = 1/7³

According to the Product of Powers:

b² × b^x = b^(2+x)

According to the Negative exponent:

x⁻² = 1/x².

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Answer: d

Step-by-step explanation: i took the test

Answer:

d

Step-by-step explanation:

The gradient at the given point (1, 1/2) is the one in option B; -1/8.

To find the gradient at the given point, we need to find the derivative and evaluate it in x = 1.

The rational function is:

y = 2/(x + 3)

And the derivative of the rational function is the following:

y' = -2/(x + 3)²

Evaluating this in x = 1 (replace the variable by the correspondent number) will give us:

y' = -2/(1 + 3)² = -2/16

y' = -1/8

That is the gradient of the rational function at the point (1, 1/2).

The correct option is B.

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Answer:

The symbol (∞) is read as infinity. and indicates that the set is unbounded to the right on a number line. Interval notation requires a parenthesis to enclose infinity. The square bracket indicates the boundary is included in the solution.

Step-by-step explanation:

Answer:

Original volume = (4/3)π(6^3) = 288π

New volume = (4/3)π(18^3) = 7,776π

7,776π ÷ 28π = 27

When the radius of a sphere is tripled, the volume of the new sphere is 27 times the volume of the old sphere.

Answer:

I would say the answer is A because its closest to the number 300

Step-by-step explanation:

i hope i helped if its wrong im sorry

Answer:

dees nuts

Step-by-step explanation:

Answer:

m = 2k/v²

Step-by-step explanation:

I think you mean solve for m, not k

Multiply both sides of the equation by 2

2 * 1/2 *(mv²) = 2 * k

Rewrite the expression.

1*(mv²) = 2*k

Multiply mv² by 1

mv² = 2*k

Divide each term by v² and simplify

mv²/v² = 2k/v²

mv²/v² cancel out and you get

m = 2k/v²

Answer:

6% your welcome give me brainliest

Step-by-step explanation:

Answer:

x = 3

Step-by-step explanation:

The measure of the inscribed angle is half of measure of the intercepted arc .

Find the half of 192.

192/2 = 96

The inscribed angle is 96°.

Create an equation and solve for x.

31x + 3 = 96

31x + 3 - 3 = 96 - 3

31X = 93

31x/31 = 93/31

x = 3

The percentage profit for the shop owner is 197.6%.

Percentage profit is the ratio of the profit on a good or item and the the cost price expressed as a percentage.

The cost price of the book in US dollars will be: 10 * 1/0.85 = 11.76 USD

Selling price in USD = 35 USD

Profit = 35 - 11.76

Profit = 23.24 USD

Percentage profit = 23.24/11.76 * 100%

Percentage profit = 197.6%

In conclusion, the percentage profit is the profit expressed as a percentage of the cost price.

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Step-by-step explanation:

4.1  X 10^2    is    4.1  X 100   =   410

Answer: vertical angles

these angles are also congruent

hope this helps!

Answer:

vertical lines

Step-by-step explanation:

that's answer choice

The midpoint has coordinates (19,19) as per the midpoint formula.

The statement is false.

The statement is false. The midpoint of the segment joining two points is determined by taking the average of their x-coordinates and the average of their y-coordinates. In this case, the two given points are (0,0) and (38,38).

To find the x-coordinate of the midpoint, we take the average of the x-coordinates of the two points:

(x1 + x2) / 2

= (0 + 38) / 2

= 38 / 2

= 19

Therefore, the x-coordinate of the midpoint is 19, which matches the statement. However, to determine if the statement is true or false, we also need to check the y-coordinate.

To find the y-coordinate of the midpoint, we take the average of the y-coordinates of the two points:

(y1 + y2) / 2

= (0 + 38) / 2

= 38 / 2

= 19

The y-coordinate of the midpoint is also 19. Therefore, the coordinates of the midpoint are (19,19), not 19 as stated in the statement. Since the midpoint has coordinates (19,19), the statement is false.

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Answer:

10

Step-by-step explanation:

You can do 5+5=10 or you can do 5x2=10. You can also do it this way but it is the longer way 1+1+1+1+1+1+1+1+1+1.

Answer:

its 10 sweety if you need any help just ask me

Step-by-step explanation:

Answer:

84

Step-by-step explanation:

Ab = 7 x 2 = 14

V = 14 x 6 = 84

Answer:

$3000 is to be saved per month in order to cover the down payment

Step-by-step explanation:

It is that 20% of the total cost of the house is to be given as down payment.

The total cost of house is $180,000

The amount to be paid as down payment include

\(\frac{20}{100} * 180,000\\36000\)

considering that he will pay down payment in next 12 months, then the total sum of money to be saved per month is

\(\frac{360,00}{12} \\3000\)

Using the z-distribution, it is found that since the p-value is less than 0.05, there is evidence to support the claim that the average cost of private universities are decreasing.

At the null hypothesis, it is tested if the average cost is still of $50,000, that is:

\(H_0: \mu = 50000\)

At the alternative hypothesis, it is tested if the average cost is decreasing, that is:

\(H_1: \mu < 50000\)

The test statistic is:

\(z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}\)

In which:

The parameters for this problem are:

\(\overline{x} = 49450, \mu = 50000, \sigma = 2500, n = 100\)

Hence:

\(z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}\)

\(z = \frac{49450 - 50000}{\frac{2500}{\sqrt{100}}}\)

z = -2.2.

Using a z-distribution calculator, for a left-tailed test, as we are testing if the mean is less than a value, with z = -2.2, the p-value is of 0.0139.

Since the p-value is less than 0.05, there is evidence to support the claim that the average cost of private universities are decreasing.

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The number line which shows the solution set to the given inequality is: number line B.

A number line can be defined as a type of graph with a graduated straight line which comprises numerical values (both positive and negative numbers) that are placed at equal intervals along its length.

Now, we would solve the given inequality:

½(20x + 6) ≥ x + 30

10x + 3 ≥ x + 30

10x - x ≥ 30 - 3

9x ≥ 27

x ≥ 3.

Therefore, the number line which shows the solution set to the given inequality is a number line with 0, 1, 2, 3, 4, 5, 6 in which a circle from 3 extends to the right, with an arrow at the end.

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Complete Question:

Which number line shows the solution set to this inequality? ½(20x + 6) ≥ x + 30

Answer:

vertex is (6, -11)

Step-by-step explanation:

Given equation
f(x) = x² - 12x + 25

is that of an upward-facing parabola(since the coefficient of x² is positive).

The vertex will be at a minimum and its x-coordinate can be found by finding the first derivative of f(x), setting it equal to zero and solving for x

f'(x) = d/dx(x² - 12x + 25)

= 2x - 12

f'(x) = 0 ==> 2x - 12 = 0

2x = 12

x = 6

Substitute x = 6 in f(x) to get

f(6) = 6² - 12(6) + 25

= 36 - 72 + 25

= -11

So the vertex is at (6, -11)

7.1

Step-by-step explanation:

because it is in standard form

Answer:

a: 3°

b: -4°

c: -3°

d: 3°

e: -4°,-3°,0°,3°,3°

f: 7

Answer:

Step-by-step explanation:

The method to find the midpoint of two points is (a + b)/2 a and b both being x+x and y+y for the differentiating coordinates respectively.

here, it would be x = (-2 + 4)/2 and y = (5-5)/2

giving you the coordinate [ 1 , 0 ]

Answer:

1443

Step-by-step explanation:

The property that should be used to continue simplifying the above equation is A-^1A = 1. So, correct option is C.

We can start with the equation AB = AC and multiply both sides by A^-1 on the left:

A^-1(AB) = A^-1(AC)

Using the associative property of matrix multiplication, we can simplify the left-hand side:

(A^-1A)B = (A^-1A)C

Using the fact that A^-1A = I (the identity matrix), we get:

IB = IC

Simplifying further using the fact that I times any matrix is that matrix itself, we obtain:

B = C

Therefore, the equivalent equation to AB = AC using A^-1 that simplifies to B = C is A^-1(AB) = A^-1(AC), and the property used to continue simplifying the equation is A^-1A = I.

The correct option is (C) A^-1A = 1, which is equivalent to A^-1A = I, since the identity matrix is denoted as 1 in some contexts.

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