Just do the question and i mark as brainliest thx

The opposite of -12 is basically the same number but with an opposite sign.

The opposite if -12 is 12 because the sign changes from a negative to a positive.

Therefore, the answer is 12.

Best of Luck!

Answer

Positive 12

Step-by-step explanation: Negative 12 is -12 and positive 12 nothing changes

Answer:

16x257

Step-by-step explanation:this eqals that and stuff

A log base 2 calculator calculates the logarithm of a number with respect to base 2.

A tool that helps in calculating a number's logarithm in relation to base 2 is a log base 2 calculators. A base must be increased to the logarithm, or exponent, in order to yield a given number.

The base in this situation is 2, and the exponent to which 2 must be increased in order to equal the supplied number is the logarithm. The base-2 logarithm offers a measure of the number of bits necessary to express a particular amount, making it important in computer science, information theory, and other fields that need computations involving binary integers.

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Reason:

The tickmarks tell us that the pair of hypotenuses are congruent.

The shared horizontal sides at the bottom are the pair of congruent legs of the right triangles. Therefore, we can use the hypotenuse leg (HL) theorem. This theorem only works for right triangles.

Answer:

right your relly right and super right

The expression 4y-9x+3y-2x when simplified gives 7y - 11x

Algebraic expressions are known as expressions consisting of terms, coefficients, variables, constants and factors.

They also consist of mathematical operations such as;

Example of algebraic expressions;

y - 2x

9x - 18z

From the information given, we have that;

4y-9x+3y-2x

To simplify the expression, we have to take the following steps

Collect like terms

4y + 3y - 9x - 2x

Add or subtract like terms

7y - 11x

We can see that the expression is simplified to 7y - 11x

Thus, the expression 4y-9x+3y-2x when simplified gives 7y - 11x

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By Pythagorean formula and proportion formula, the length of side VW is equal to 6 units. (Right choice: C)

Herein we find a geometric system formed by two right triangles, in which two side lengths are known (WX, XY) and we need to determine the length of side VW.

Both triangles XVW and XYW are similar, where they share the same internal angles and proportional corresponding pair of sides. Then, the system is represented by following proportion formula:

XV / WX = XY / XV

XV² = XY · WX

XV = √(XY · WX)

If we know that XY = 9 and WX = 3, then the value of XV is:

XV = √27

XV = 3√3

Then, the side VW is found by Pythagorean theorem:

VW = √(WX² + XV²)

VW = √(3² + 27)

VW = 6

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Answer: 12.5

Step-by-step explanation: 2times 12.5 is 25

Answer:

5 days

Step-by-step explanation:

To find out this question, we can subtract the amount she wants to get, 25, by the amount she has, 15:

25 - 15 = 10

So, Jomaya wants to save up $10, and because she saves $2 every day, we can divide:

10 / 2 = 5

So, it will take Jomaya 5 days to save $25

Hope this helps :)

Answer:

It is nonlinear

Step-by-step explanation:

Answer:

The formula for calculating the probability of two independent events is the product of the probabilities of each event occurring. In other words, if event A and event B are independent, then the probability of both events occurring is calculated as P(A and B) = P(A) * P(B).

Answer: 5.18

Step-by-step explanation:

Z= 3.06+2.12=5.18

The surface integral ∬S curl(F) · dS, where \(F = (x^2yz)i + (yz^2)j + (z^3e^{xy})k\) and S is the part of the sphere x² + y² + z² = 5 that lies above the plane z = 1 with upward orientation, is equal to 0.

The curl of F is given by:

curl(F) = ∇ × F

=\((d/dx, d/dy, d/dz) \times (x^2yz, yz^2, z^3e^{xy})\)

\(= (0 - 2yz, 0 - z^3e^{xy}, yz^2 - 2xyz)\)

So, curl(F) = \(-2yz i - z^3e^{xy} j + (yz^2 - 2xyz) k.\)

The surface S is the part of the sphere x² + y² + z² = 5 that lies above the plane z = 1.

The upward orientation means that the normal vector points outward from the sphere.

The normal vector to the sphere is (2x, 2y, 2z), and at the plane z = 1, the normal vector becomes (2x, 2y, 2).

The closed curve C is the intersection of the sphere x² + y² + z² = 5 and the plane z = 1.

This is a circle with radius √(5 - 1) = 2, centered at the origin (0, 0, 1).

The line integral can be evaluated using the parameterization of the circle:

r(t) = (2cos(t), 2sin(t), 1), where t varies from 0 to 2π.

Now, let's calculate the line integral:

∮C F · dr = ∫(2cos(t), 2sin(t), 1) · (-2sin(t), 2cos(t), 0) dt

= ∫(-4cos(t)sin(t) + 4sin(t)cos(t)) dt

= ∫0 dt

= 0

Therefore, the surface integral ∬S curl(F) · dS is also zero.

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Answer:

d. The graph of g(x) is vertically stretched by a factor of three

Step-by-step explanation:

the above two functions represents a parabola.

4ab^2

i the first case that of f(x)

a=1/4= 0.25

in the second case of g(x)

a=9/4

the value a describes the semi major axis or the length of the parabola vertically.

thus d. Is the correct option.

Answer:

1). Options (B) and (E)

2). First train is going faster than the second train.

Step-by-step explanation:

1). Rate of 2 gallons of vinegar = $3

   Therefore, per gallon rate of vinegar = \(\frac{3}{2}\) = $1.5

   In $3 quantity of vinegar chef will get = 2 gallons

   Therefore, quantity of vinegar chef will get in $1 = \(\frac{2}{3}\) gallons

Option (A).

Price of 4 gallons = 4 × $1.5 = $6.00

False.

Option (B)

Price of 1 gallon = $1.50

True

Option (C)

Price of 30 gallons = 30 ×$1.5 = $45    

False.

Option (D)

In $2 number of gallons of vinegar chef will get = \(\frac{2}{3}\times 2=\frac{4}{3}\) gallons

False

Option (E)

Number of gallons of vinegar chef gets in $1 = \(\frac{2}{3}\)

True

Therefore, Options (B) and (E) are the correct.

2). Speed = \(\frac{\text{Distance}}{\text{Time}}\)

For first train,

Speed = \(\frac{30}{\frac{1}{3}}\)

            = 90 miles per hour

For second train,

 Speed = \(\frac{20}{\frac{1}{2}}\)

             = 40 miles per hour

 Since, 90 miles per hour > 40 miles per hour

 First train is going faster than the second train.

Answer:

163.1 feets bicycle will move in 20 revolution

Step-by-step explanation:

Given:-

Then the radius will be 13 inch

Solution:-

One revolution = Perimeter of bicycle wheel

Perimeter of bicycle wheel :-

= 2πr

= 2×22/7×13

81.7 inch

Total feets the bicycle will travel If it turns 20

times :-

81.7×20

= 1634 inches

Distance covered in feets:-

1634/12

= 163.1 feets

Answer: {18, 24, 30} and {8, 15, 17}

{18, 24, 30} is just the {3, 4, 5} triple scaled up by a factor of 6. {8, 15, 17} is a well known triple. The rest do not satisfy a² + b² = c².

i hope this helped! :D

Answer: 6

Step-by-step explanation:

The total amount needed by Kallen for the gift and the wrapping paper will be:

= $43.87 + $2.94

= $46.81

Since he earns $8.25 for each lawn he mows, the number of lawns they he will need to complete to buy the gift and wrapping will be:

= $46.81 / $8.25

= 5.67

= 6 lawns approximately

He'll need to mow 6 lawns

Answer:

6

Step-by-step explanation:

Answer:

\(x = \frac{1}{5}\) or \(0.2\) (they're the same)

I hope this helps!

Answer:

  [c] The value of w cannot be a negative number.

  [d] Substitution is used to replace the variable l with a value of 20.

  [e] The subtraction property of equality is used to isolate the term with the variable w.

Step-by-step explanation:

     To figure out which steps of the solution are true, let us solve.

2 l plus 2 w equals 62 -> 2l + 2w = 62

----

2l + 2w = 62

2(20) + 2w = 62  <- Substitution is used to replace the variable l with a value of 20.

40 + 2w = 62

2w = 22 <- The subtraction property of equality is used to isolate the term with the variable w.

w = 11

     This means that the value of w is not 10 feet so the first option is incorrect. This shape is a rectangle, so the value of w cannot be 0. Since we cannot have a negative measurement, option three is incorrect. This leaves us with the last three options as our answer, shown by the work above.

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Answer:

Switch to the other streaming service

Step-by-step explanation:

So, 96$ with a 12% increase is $107.52.

But if you do 8.75×12 you get $105.

So Clare should switch to the other music stream.

Answer:

He will have $538.75 after one year.

Step-by-step explanation:

First we need to find how much is 7.75% of 500. We can find it by multiplying 500 x .0775

This equals 38.75

That means after one year, he has $38.75 more.

500+38.75=538.75

He will have $538.75 after one year.

Answer:

2,1  4,2  6,3  8,4  10,5  12,6  14,7  16,8  18,9  20,10  etc.

Step-by-step explanation:

Answer:

$40-$15= $25 Rania has $25 dollars left

Step-by-step explanation:

Since Rania earned $40 for her birthday and then she spent $15 dollars at the movies, that means that 40-15=25 so she has 25 dollars left.

When the sum of the squared deviation scores is SS=20 for a population n=5 scores, then the variance for this population is 4

Given,

The sum of the squared deviation scores SS= 20

Population of n= 5

Then the variance = SS/n

Substitute the values in the equation

The variance = \(\frac{20}{5}\)

=4

Hence, when the sum of the squared deviation scores is SS=20 for a population n=5 scores, then the variance for this population is 4

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The inequality that can be used to find w, the number of weeks it can take for the shelter to meet its goal, is: w ≥ 10

To find the inequality that can be used to determine the number of weeks it can take for the animal shelter to meet its fundraising goal, we need to consider the total expenses and donations.

Let's break down the expenses and donations:

Expenses:

Annual rental = $2,500

Weekly expenses = $450

Donations:

One-time donation = $125

Pledged donations per week = $680

Let w represent the number of weeks it takes for the shelter to meet its goal.

Total expenses for w weeks = Annual rental + Weekly expenses * w

Total expenses = $2,500 + $450w

Total donations for w weeks = One-time donation + Pledged donations per week * w

Total donations = $125 + $680w

To meet the goal, the total donations must be greater than or equal to the total expenses. Therefore, the inequality is:

Total donations ≥ Total expenses

$125 + $680w ≥ $2,500 + $450w

Simplifying the inequality, we have:

$230w ≥ $2,375

Dividing both sides of the inequality by 230, we get:

w ≥ $2,375 / $230

Rounding the result to the nearest whole number, we have:

w ≥ 10

Therefore, the inequality that can be used to find w, the number of weeks it can take for the shelter to meet its goal, is:

w ≥ 10

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The conditions for inference has been not met the sample wasn't chosen using a random method.

Sample mean , μ = 11.50

Total people estimated, x = 41

Mean sale increases by 10 per day

z = x - μ / σ

z = 41 -11.5/10

z = 2.95

Necessary condition for inference is

Three necessary conditions must be met to do inference are -

The randomness of the sample,

The distribution should approximate the normal distribution

The samples taken and their observations need to be independent of each other.

Selection cannot be selected randomly because specific group of people are selected

Hence, No, the sample was not chosen using a random method.

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The question is incomplete the complete question is :

question a local convenience store in a large city closes each day at 10 p.m. the owner of the store is investigating whether mean sales will increase by at least $10 per day if the store remains open until 11 p.m. the owner asked the 41 members of a local civic group to estimate the amount of money they might spend during the extra hour. the sample mean was $11.50. the owner will conduct a one-sample t -test for a population mean.

Have the conditions for inference been met?

A. Yes, all conditions have been met.

B. No, the sample was not chosen using a random method.

C. No, the sample size is greater than 10 percent of the population.

D. No, the sample size is not large enough to assume normality of the sampling distribution.

E. No, the distribution of the sample is not normal.

The intervals of concavity for f(x) = 3 cos x, with 0 < x < 21, are (0, π/2) and (3π/2, 2π).

To find the intervals of concavity for f(x) = 3 cos x, we need to analyze the second derivative of the function.

First, let's find the second derivative of f(x):

f'(x) = -3 sin x (derivative of cos x)

f''(x) = -3 cos x (derivative of -3 sin x)

Now, we can analyze the concavity of f(x) by considering the sign of the second derivative:

When x ∈ (0, π/2): In this interval, cos x > 0, so f''(x) < 0. The second derivative is negative, indicating concavity downwards.

When x ∈ (π/2, 3π/2): In this interval, cos x < 0, so f''(x) > 0. The second derivative is positive, indicating concavity upwards.

When x ∈ (3π/2, 2π): In this interval, cos x > 0, so f''(x) < 0. The second derivative is negative, indicating concavity downwards.

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40ft hope I helped with your problem! Have a great day my comrade

Answer:

answer is <

Step-by-step explanation:

first equation is equal to 6 and the other is equal to 7

Answer:

it is a 90 degree angle

Step-by-step explanation:

because the little square in the corner