I want to know 55-(12+2 ) explain and I will do anything

Answer:

C, F, D

Step-by-step explanation:

For each side of each triangle, think of the side as the hypotenuse of a right triangle. Then use the Pythagorean theorem to find the length of the hypotenuse, which is the side of the triangle.

Left problem:

From point C to point A, go 2 left and 7 up.

\( AC = \sqrt{2^2 + 7^2} = 7.3 \)

From point A to point B, go 5 right and 1 down.

\( AB = \sqrt{5^2 + 1^2} = 5.1 \)

From point B to point C, go 6 down and 3 left.

\( BC = \sqrt{6^2 + 3^2} = 6.7 \)

Perimeter = 7.3 + 5.1 + 6.7 = 19.1

Do the same for the other triangles.

Middle problem:

From point F to point D, go 2 left and 7 up.

\( FD = \sqrt{2^2 + 7^2} = 7.3 \)

From point D to point E, go 7 right and 2 down.

\( DE = \sqrt{7^2 + 2^2} = 7.3 \)

From point E to point F, go 5 down and 5 left.

\( EF = \sqrt{5^2 + 5^2} = 7.1 \)

Perimeter = 7.3 + 7.3 + 7.1 = 21.7

Right problem:

From point L to point J, go 7 left and 1 up.

\( LJ = \sqrt{7^2 + 1^2} = 7.1 \)

From point J to point K, go 4 up and 5 right.

\( JK = \sqrt{4^2 + 5^2} = 6.4 \)

From point K to point L, go 2 right and 5 down.

\( KL = \sqrt{2^2 + 5^2} = 5.4 \)

Perimeter = 7.1 + 6.4 + 5.4 = 18.9

The value of x in the diagram given 42°

Using angle theorems, the angles are opposite and the reflex angles can be calculated thus :

Recall :

Sum of reflex angles is 360°

(x + x + (3x+12) + (3x + 12) ) = 360°

2x + 6x + 24 = 360

8x = 360 - 24

8x = 336

x = 336/8

x = 42°

Hence, the value of x is 42°

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Answer: D

Step-by-step explanation:

2x-36=0                                                

+36     +36

___________

2x=36

x=18

Even if one equation, -18 was not solved, you can easily cross out the ones without 18 and get the answer.

The event E is picking 7 first regardless of the second pick. Furthermore, the very first condition is that 2 odd numbers are picked. So, we need the probability of picking 7 first and then an odd number as the second pick.

The only options that fulfill both conditions are: (7,3), (7,5), (7,7), (7,9).

The answer is then

Where (a,b) represents picking a first and b second.

Answer:

it's answer is D. 33°

Let the unknown angle be x Then.

x + 100° + 47° = 180° [ being sum of angles of triangle ]

x + 147° = 180°

x = 180° - 147°

x = 33°

Step-by-step explanation:

Answer:

Step-by-step explanation:

. 6

Answer:

2/3 or .6666666666......

Step-by-step explanation:

isolate x  by dividing -1.2 by 1.8

Answer:

2 2/9

Step-by-step explanation:

The estimate of the population standard deviation will be the estimated sample standard deviation

You must use sample data when you don't have access to population data. Consider the following hypothetical research question: What is the standard deviation of student heights in Azerbaijan? All of the residents are Azerbaijani students. To gather data on every student in Azerbaijan might be impossible or expensive.

As a result, you measure the heights of 100 pupils who were chosen at random. You next figure out the sample standard deviation. Keep in mind that the lack of population statistics prevents you from calculating the population standard deviation.

In this case, your best estimate of the population standard deviation will be the estimated sample standard deviation.

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Answer:

55

Step-by-step explanation:

9x + 1 = 7x + 13

x = 6

UW = 42+13

= 55

The two triangles are of congruent (SAS)

Answer:

$3,015

Step-by-step explanation:

To determine the amount that you will have in 6 years, you have to use the formula to calculate the future value:

FV=PV*(1+i)^n

FV= future value

PV= present value= $1,900

i= interest rate= 8%

n= number of periods of time= 6 years

FV=1,900*(1+0.08)^6

FV=1,900*(1.08)^6

FV=3,015

According to this, the answer is that in 6 years you will have $3,015 in your retirement account.

The estimated annual water cost for the Perricone family= $1,132,305

The family meter reading for last month = 3,970 Tgal

The family meter reading for next month= 3,973 Tgal

The rate charged by the supplier = $23.75 per Tgal.

There is increase in the meter reading per month by 3Tgal.

To calculate for the monthly cost = 23.75 × 3,970

= $94287.5

Therefore annually= $94287.5 × 12 = $1,131,450

The cost for each monthly increase = 23.75 × 3= $71.25

Therefore annual monthly increase= 71.25× 12= $855

Therefore, the estimated annual water cost for the Perricone family= $1,131,450 + $855

= $1,132,305

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The median of the given data set is 26.

In statistics and probability theory, the median is the value separating the higher half from the lower half of a data sample, a population, or a probability distribution. For a data set, it may be thought of as "the middle" value.

Given the data set, we need to find the median.

So, let's arrange the numbers from smallest to largest in order to find the median.

\(\sf 15,20,22,26,28,35,36.\)

\(\text{Median}=\sf 26\)

Therefore, the median of the data set is 26.

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Answer:

8 hours

Step-by-step explanation:

9 pair of earrings in 6 hours
=> 9 : 6 = 1,5 pair of earrings in 1 hour
12 : 1,5 = 8 hours

Karima can make 12 pair of earrings in 8 hours.

Proportion, in general, is referred to as a part, share, or number considered in comparative relation to a whole. Proportion definition says that when two ratios are equivalent, they are in proportion. It is an equation or statement used to depict that two ratios or fractions are equal.

Given that, Karima made 9 pairs of earrings in 6 hours.

Let the number of hours it took to make 12 pair of earrings be x.

Now, the proportion is

9/6 =12/x

9x=72

x=8

Therefore, Karima can make 12 pair of earrings in 8 hours.

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Step-by-step explanation:

No, having only the y intercept gives us the c value in the quadratic equation.

The answer is :

Step-by-step explanation:

To write the equation of a parabola, you need the equation \(\bf{y=ax^2+bx+c}\). You need to know the values of a, b, and c in order to write the equation. So knowing only the y-intercept (0, 5) will not suffice. He knows where the parabola intersects the y-axis yet he isn't aware of the appearance of the parabola and how to draw it.

Answer:

tan(θ)= dn/de

θ=arctan(dn/de)

Step-by-step explanation:

Answer:

Step-by-step explanation:

The formula to calculate the future value of an investment with compound interest is:

FV = PV * (1 + (r/n))^(n*t)

Where:

PV is the present value (the initial investment)

r is the annual interest rate

n is the number of compounding periods per year

t is the number of years

For Investment A:

PV = $4,000

r = 6% = 0.06

n = 2 (semiannual compounding)

t = 5 years

FV = $4,000 * (1 + (0.06/2))^(2*5) = $4,000 * (1.03)^10

FV = $4,000 * 1.664131669 = $6,656.53

So, the total amount of Investment A is $6,656.53 (rounded to the nearest cent).

Answer:

Step-by-step explanation:

The function rule g(x) after the given transformations of the graph of f(x)=4x is g(x) = -1/2x

Transformation techniques

Transformation is the process of changing the position of an object on the xy-plane.

Given the parent function

f(x) = 4x

If the function is not reflected over x-axis, the resulting function will be f(x) = -4x

If the resulting function is compressed by a factors of 1/8, hence the final function rule will be;

g(x) = 1/8(-4x)

g(x) = -1/2x

Hence the function rule g(x) after the given transformations of the graph of f(x)=4x is g(x) = -1/2x

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Answer:

b) 18,342

Step-by-step explanation:

18,342  es divisible por 6 porque es divisible por 3  y es divisible por 2

The unknown number if "four more than x is twelve." is 8

Equations are expressions separated by an equal to sign. From the given information, we can say:

If the result of the expression is 12, hence 4 + x  = 12

Get the value of x

4 + x = 12

x  = 12 - 4

x = 8

Hence the unknown number is 8

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The height of the kite from the ground when the angle is 50 degrees is 232 feet.

The study of the correlations between triangles' sides and angles is the focus of the mathematic branch known as trigonometry. To link the angles of a right triangle to the lengths of its sides, it makes use of trigonometric functions like sine, cosine, and tangent.

Numerous industries, including physics, engineering, and navigation, use trigonometry. It can be used, for instance, to determine a building's height or the separation between two locations on a map, as well as to examine how waves and oscillations behave.

To find the height of the kite above the ground we use the trigonometric identity of tangent.

Thus, we have:

tan(50°) = h/200

Now, using cross multiplication:

h = 200 tan(50°) ≈ 232 feet

Hence, the height of the kite from the ground when the angle is 50 degrees is 232 feet.

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The reasoning presented lacks explicit explanations and logical connections between the steps, making it difficult to fully understand the intended proof strategy.

The given proof aims to show that the Separation Axioms can be derived from the Replacement Schema using a particular construction involving a formula p(x, y). Let's analyze the proof step by step:

Define the formula p(x, y) as x = yo(x).

This formula states that for each x, y pair, x is equal to the unique object y such that y is obtained by applying the operation o to x.

Define the set F as {(x, x) (x)}.

This set F contains pairs (x, x) where x is the unique object obtained by applying the operation (x) to x.

Claim: F(X) = {y (x = X)p(x, y)} = {y: (x = X)x = y^o(x)} = {x: (3x € X)o(x)} = {x X: (x)}.

This claim asserts that F(X) is equivalent to {y (x = X)p(x, y)}, which is further equivalent to {y: (x = X)x = y^o(x)}, and so on.

The proof states that since (x, y) satisfies the functional formula VaVyVz(p(x, y)^(x, z) y = z), it follows that (x, y) is a functional formula.This step emphasizes that the formula p(x, y) satisfies certain properties that make it a functional formula, which is relevant for the subsequent deductions.

Finally, the proof concludes that the Separation Axioms follow from the Replacement Schema, based on the previous steps.

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Answer:

Yes (2,3)

Step-by-step explanation:

x+1 = -x+5

x+x = 5-1

2x=4

x=2

y=x+1=2+1

y=3

Answer:

(2, 3)

General Formulas and Concepts:

Pre-Algebra

Algebra I

Step-by-step explanation:

Step 1: Define systems

y = x + 1

y = -x + 5

Step 2: Solve for x

Substitution.

Step 3: Solve for y

Step 4: Graph

We can graph the systems and check if the point is the actual solution set.

Answer:

14 unit I think hope it helps

The bearing of C to A is 239⁰.

The bearing of C to A is calculated by finding the value of angle C using cosine rule since we know the value of all the sides of the triangle.

AB² = AC² + CB² - 2(AC)(CB) cosC

12.5² = 16.25² + 8.5² - 2(16.25 x 8.5) x cos C

156.25 = 336.3125 - 276.25cosC

276.25cosC = 180.06

cosC = 180.06/276.25

cos (C) = 0.6518

C = cos⁻(0.6518)

C = 49.3⁰

The value of angle A is calculated as follows;

Sin A/CB = Sin C/AB

sin A/8.5 = sin 49.3/12.5

sin A = 8.5 [sin 49.3/12.5]

sin A = 0.5157

A = sin⁻¹ (0.5157)

A = 31⁰

The bearing of C to A is calculated as;

= 270⁰ - 31⁰

= 239⁰

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The length of the road after D days of construction (L) is equal to the original length of the road (10 miles) plus the number of miles added by the construction crew each day (1 mile/day) times the number of days the construction has been going on (D).

So the equation relating L to D is:

L = 10 + 1D

This equation can be graph on a Cartesian plane with D on the x-axis and L on the y-axis. The graph will be a straight line passing through the point (0,10) and having a slope of 1, meaning that for every one increase in D there is a one increase in L.

It will look like this:

graph{10+x [-12, 12, -6, 6]}

Where D=x and L=y.

Answer: L - 10 = D

Step-by-step explanation:

1 Day = 1 Mile
After 1 Day of construction a 1 Mile is added to the road
Original length is 10 miles
Length (e.g. 11 miles) - 10miles = Day 1
So:
L - 10 = D

Answer:

A or D

Step-by-step explanation:

i did this on khan academy thats why ;)

From the graph, the tangent function has a midline and period but no amplitude.

The connection between the lengths and angles of a triangular shape is the subject of trigonometry.

The statements are given about the tangent function.

The graph of the tangent function is given below.

From the graph, the tangent function has a midline and period but no amplitude.

Then the correct option is B.

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Answer: Equilateral

Step-by-step explanation:

It's equilateral because it says that each side of the triangle is 4cm. In simple words, all the sides of triangle are equal. Such a triangle is called an equilateral triangle.

Hope you understood.

Answer:

D

Step-by-step explanation:

7 less than the square of the number means a number squared subtracted by 7, which would be D.

Answer: the larger number is 54

Step-by-step explanation:

x + y = 56

xy = 108

x = 56 - y

substitute the x value in equation

(56 -y) y = 108

56y - y^2 = 108

y^2 - 56y + 108 = 0

=(y - 2)(y - 54)

The two numbers are 2 and 54.

Multiplication is the process of adding a number up to a given number.

Given that, the sum of the two numbers is 56 and their product is 108.

Let the numbers are x and y then,

x + y = 56    (1)

xy = 108

x = 108/y

Substitute x = 108/y into equation (1):

108/y + y = 56

108 + y² = 56y

y² -56y + 108 = 0

y² -54y -2y + 108 =0

y(y - 54) -2(y - 54) = 0

(y - 2)(y - 54) = 0

y =2 or y = 54

Now, for y = 2 the value of x is 54 and for y = 54 the value of x is 2.

Hence, the two numbers are 2 and 54.

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Answer:

Option B.

Step-by-step explanation:

Obvious. Lets explain:

Option A: It's pretty ease to do. You just need 2 triangles to make a parallelogram, and that's that.

Option B: How can you make a rectangle from triangles-???

Option C: You might think I am wrong, but I am right. Get 6 triangles, then plato, you have a whole hexagon!

Option D: You probably already know this...but you just need three triangles.

It's correct on every school thing.