Ayo, i give brainliest answer if you give it back check!​

Answer:

r 0.6 kWh to run for 30 minutes.

Answer:

ok so it takes 1200 watts for a hair dryer to run for a full hour, that means it takes 600 watts, or 600 Wh, or 0.6 kWh to run for 30 minutes

Step-by-step explanation:

Suppose the dosage for an adult is 200 mg then,

Dosage for a drug is D,

equation c = 0.0417 D(a + 1)

The dosage for an adult is 200 mg

D = 200.

c = 0.0417 D(a + 1)

c = = 8.34a + 8.34

The equation resemble y = mx + c

Therefore, slope m = 8.34

The pitch for the graph of c is8.34( mg/ time), and it represents the monthly increase in dosage of child requirements. A infant has age 0, so the dosage one needs is,

c = = 8.34a + 8.34

Putting a =0,

c(0) = 8.34 mg.

Therefore, The dosage for a newborn is 8.34 mg.

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Answer:

4, 16

Step-by-step explanation:

\( a_n = 3a_{n - 2} - a_{n - 1} - 1 \)

Let's see if it works for a_3:

\( a_3 = 3a_{1} - a_{2} - 1 \)

\( a_3 = 3(3) - (4) - 1 \)

\( a_3 = 4 \)

Yes, it works for a_3.

Now let's calculate a_4.

\( a_4 = 3a_{2} - a_{3} - 1 \)

\( a_4 = 3(4) - (4) - 1 \)

\( a_4 = 7 \)

a_4 is also correct.

Let's calculate a_5.

\( a_5 = 3a_{3} - a_{4} - 1 \)

\( a_5 = 3(4) - 7 - 1 \)

\( a_5 = 4 \)

Let's calculate a_6.

\( a_6 = 3a_{4} - a_{5} - 1 \)

\( a_6 = 3(7) - 4 - 1 \)

\( a_6 = 16 \)

Answer: 4, 16

Answer:

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Step-by-step explanation:

\(\displaystyle \lim_{x \to 0} \left(\dfrac{\sqrt{x^2 + 3x + 1} - 1}{\arcsin 2x} \right)\)

Note that as \(x \rightarrow 0\), the ratio becomes undefined. Using L'Hopital's Rule, where

\(\displaystyle \lim_{x \to c} \dfrac{f(x)}{g(x)} = \lim_{x \to c} \dfrac{f'(x)}{g'(x)} \)

where f'(x) and g'(x) are the derivatives of the functions f(x) and g(x), respectively. Note that

\(f(x) = \sqrt{x^2 + 3x + 1} \:\:\text{and}\:\: g(x) = \arcsin 2x\)

\(f'(x) = \dfrac{2x + 3}{2(\sqrt{x^2 + 3x + 1})}\)

\(g'(x) = \dfrac{2}{\sqrt{1 - 4x^2}}\)

Therefore,

\(\displaystyle \lim_{x \to 0} \dfrac{f'(x)}{g'(x)} = \lim_{x \to 0} \dfrac{2x + 3}{2(\sqrt{x^2 + 3x + 1})} \times \left(\dfrac{\sqrt{1 - 4x^2}}{2} \right)\)

or

\(\displaystyle \lim_{x \to 0} \left(\dfrac{\sqrt{x^2 + 3x + 1} - 1}{\arcsin 2x} \right) = \dfrac{3}{4}\)

a) The function f(x) = \(x^2\) is not onto, as there are no negative values in the range of f(x).

b) The function g(x) = \(x^3\) is both onto and one-to-one. For any value of y, there is only one possible input x such that g(x) = y, namely x = \(y^{(1/3)}\). Also, the function g(x) is one-to-one as the cube of a real number is unique.

c) The function h(x) =\(x^3\) is onto but not one-to-one. For any value of y, there is always a possible input x such that h(x) = y.

(a) The function f(x) = \(x^2\) is not onto, as there are no negative values in the range of f(x). For example, there is no value of x such that f(x) = -1. However, f(x) is not one-to-one as well since f(-1) = f(1) = 1, i.e., two different inputs have the same output.

(b) The function g(x) = \(x^3\) is both onto and one-to-one. For any value of y, there is only one possible input x such that g(x) = y, namely x = \(y^{(1/3)}\). Also, the function g(x) is one-to-one as the cube of a real number is unique.

(c) The function h(x) =\(x^3\) is onto but not one-to-one. For any value of y, there is always a possible input x such that h(x) = y. However, for example, h(-2) = h(2) = 8, i.e., two different inputs have the same output, so h(x) is not one-to-one.

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The electric field is the derivative of the electric potential with respect to position. So we can find the electric field by finding the derivative of V(y) with respect to y.

What does a math function mean?

a mathematical phrase, rule, or law that establishes the link between an independent variable and a dependent variable (the dependent variablevariable).

dV/dy = 8y - 3

So, at position y=6, the electric field is E = dV/dy = 8*6 - 3 = 45

Therefore, the magnitude of the electric field at position (2,6) is 45 N/C.

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Answer:

The line r is the transversal and ∠1 and ∠2 are linear pairs.

Step-by-step explanation:

Angles such as matching angles, alternative angles, linear pair angles, etc. are created when a transversal intersects parallel lines.

Consequently, the parallel lines are p and q.

R is the transversal

The parallel lines p and q are divided by the transversal r.

As a result, lines 1 and 2 are linear pairs, and line r is the transversal.

Answer:

it is called a transversal (how do u not know this?)

Answer: 5/7 of the kids chose New York or L.A.

Step-by-step explanation:

All you need to do in this problem is add the fraction of people that chose New York and the fraction of people that chose L.A:

4/7 + 1/7 = 5/7

The linear function that models the situation is given as follows:

d = 0.85t.

A proportional relationship is a relationship in which a constant ratio between the output variable and the input variable is present.

The equation that defines the proportional relationship is a linear function with slope k and intercept zero given as follows:

y = kx.

The slope k is the constant of proportionality, representing the increase or decrease in the output variable y when the constant variable x is increased by one.

The constant ratio for this problem is given as follows:

k = 0.83, as each division of d by t has a result of 0.83.

Hence the equation is given as follows:

d = 0.83t.

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After making payments for 15 years, the amount still owed on the mortgage would be approximately $145052.36.

To determine how much will still be owed after making payments for 15 years, we can use the formula for the remaining balance on a mortgage:

Remaining balance = P ((1 + r)ⁿ - (1 + r)ᵇ) / ((1 + r)ⁿ - 1)

where:

P = the initial loan amount (in this case, $219,000)

r = the monthly interest rate (which is the annual interest rate divided by 12)

n = the total number of monthly payments (which is 30 years times 12 months per year, or 360 months)

b = the number of monthly payments made so far (which is 15 years times 12 months per year, or 180 months)

First, we need to calculate the monthly interest rate:

r = 4.5% / 12 = 0.00375 = 0.375%

Next, we can plug in the values to get:

Remaining balance = $219,000 ((1 + 0.00375)³⁶⁰- (1 + 0.00375)¹⁸⁰) / ((1 + 0.00375)³⁶⁰ - 1)

= $145052.36

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Answer:

The golden ratio is a proper term in the field of mathematics, but it finally covers more than the research in the field of mathematics. According to the current literature discussion, we can say that the discovery of the Golden ratio and how it evolved is still a mystery. But studies have shown that the Pythagorean school of ancient Greece in the 6th century BC studied the formation of regular 5-sided and regular 10-sided plots, leading modern mathematicians to conclude that the Pythagorean school had touched on and even mastered some of the rules of the golden ratio and also discovered irrational numbers. It focuses on the relationship from mathematics, to explore the principle of beauty and that beauty is harmony and proportion, according to the proportional relationship can form beautiful patterns, this is actually a digital proportional relations, the line is divided into two parts, a long and a short period of the ratio of the equal to the ratio of length to a long, their proportion is around 1.618:1, This mathematical principle is also embodied in the famous Frederikian sequence, in which everything in this proportion shows the harmony and balance of its internal relations.

In the 4th century BC, the Greek mathematician Eudoxus was the first to systematically study this problem and establish the theory of proportion. Around 300 BC, Euclid absorbed the research results of Eudoxus in writing The Elements of Geometry and further systematically discussed the Golden Section, which became the earliest treatise on the golden Section (i.e. the middle and the end ratio) [5].

After the Middle Ages, the golden ratio was shrouded in mystery. Italian mathematician Luca Pacioli called the middle and the end of the ratio sacred and wrote a book about it. The German astronomer Johannes Kepler called the divine ratio the Golden Ratio. Golden in the 19th century the name only gradually, and the evidence is that German mathematician Martin Ohm (English: Martin Ohm) wrote the second edition of the basic pure mathematics annotation wrote about the interpretation of the golden ratio: "people used to put any straight line along the way will be divided into two parts, the method of known as the golden mean". And in the ninth edition of the Encyclopaedia Britannica, published in 1875, Sully notes: "The interesting, experimental and strong idea put forward by Frederick... proclaimed the supposed superiority of the 'golden Section' in visual proportion." So the Golden Section was already popular. In the 20th century, American mathematician Mark Barr gave it the name Phi. The Golden Section has many interesting properties and has been widely used by humans to make it famous today. The most famous example is the golden ratio or 0.618 method in optimization, which is first proposed in 1953 by Jack Kiefer (English: Jack Kiefer), an American mathematician, and is promoted in China in 1970s.

Answer: 104

Step-by-step explanation:

Angles at a line are equal to 180 degrees so:

180 = 72 + (x + 4)

180 = x + 76

180 -76 = x + 76 -76

104 = x

Answer: 68y+106=36-y

The values of the unknown angles are ∠1 = 92°, ∠2 = 24°, ∠3 = 64°, ∠4 = 35°, ∠5 = 81°

Corresponding angles are the angles which are formed in matching corners or corresponding corners with the transversal when two parallel lines are intersected by any other line (i.e. the transversal). For example, in the below-given figure, angle p and angle w are the corresponding angles.

∠1 + 88 = 180°( angles on a straight line)

∠1 = 180 - 88 which is 92°

∠3 = 64°( corresponding angles are equal)

∠2 + ∠1 + ∠3 = 180( sum of angles in a triangle)

∠2 + 92° + 64° = 180

∠2 = 180 - 92 - 64

∠2 = 24°

∠4 + 81 + ∠3 = 180 ( angles on a straight line)

∠4 + 81 + 64 = 180

∠4 = 180 - 64 -81

∠4 = 35°

∠5 = 81°( alternate angles are equal)

In conclusion the values of ∠1, ∠2, ∠3, ∠4, ∠5 are 92°, 24°, 64°, 35° and 81° respectively.

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The length of side b of the given right angle triangle using law of sines is; b = 12.044 m

The law of sines states that when we divide side "a" by the sine of angle A, it is equal to side "b" divided by the sine of angle B, and also equal to side "c" divided by the sine of angle C

Thus;

a/sin A = b/sin B = c/sinC

The parameters are;

B = 42°

c = 18m

Since c is the hypotenuse, it is the side that will be opposite the right angle and so;

C = 90°

Thus, using sine rule;

c/sinC = b/sin B

18/sin 90 = b/sin 42

b = (18 * sin 42)/1

b = 12.044 m

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Answer:122°

Since USM is 180° you take 180 and 58° and then subtract them and you get 122°.

Answer:

2-foot piece of linen for $10.32

Step-by-step explanation:

If you buy two feet of linen, you'll be paying a bit over 5 dollars per foot, but if you buy 62 inches of linen, you'll be paying about 7 dollars per foot.

Answer:

2-foot piece of linen for $10.32

Step-by-step explanation:

First, we need to know how many inches are in 2 feet.

Now, we can solve for the price per inch of linen.

So, the price per inch for the first one is $0.43.

To solve for the price per inch of the second one, we can use this equation:

The second one costs $0.61 for every inch.

Therefore, the better price is the one with 2 feet for $10.32

The number of revolutions made by the wheel is 5.24 ≅ 5.  

One complete revolution is equal to 360 degrees, so to find the number of complete revolutions the wheel has made, we can divide the total number of degrees rotated by 360.    

Here we have

A wheel rotated by 1888°  

As we know One complete revolution is equal to 360 degrees

Hence, the angle can be rotated by the wheel in 1 rotate = 360°  

Let the wheel make 'x' revolution to make 1888°  

=> 360(x) = 1888

=> x = 1888/360

=> x = 5.24

Therefore,

The number of revolutions made by the wheel is 5.24 ≅ 5.    

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We're given:

If the shop sold " \(9\dfrac{9}{10}\)  times as much milk chocolate as white chocolate", we must multiply \(9\dfrac{9}{10}\) by the amount of white chocolate sold to find the amount of milk chocolate sold.

Multiply \(9\dfrac{9}{10}\) by 9 ounces:

\(9\dfrac{9}{10}\times9\)

Convert the fraction into an improper fraction:

\(=\dfrac{99}{10}\times9\)

Multiply:

\(=\dfrac{891}{10}\)

The shop sold \(\dfrac{891}{10}\) ounces of milk chocolate.

The method is: Find the increase and find the ratio of the increase and the old price.

The percentage increase is 20%

A percentage is defined as the ratio that can be expressed as a fraction of 100.

The method below shows how you would calculate the % increase.

First step: Find the increase:

increase = 480 - 400 = $80

Second step: Find the ratio of the increase and the old price and multiply by 100 to express in percentage:

80/400 * 100 = 20%

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Answer:

It should be 6^1.

Step-by-step explanation:

Because 6^1= 1 and 1 * 1= 1 which makes it a perfect square

:)

The difference between the area of the rectangle and the area of the triangles is 56 units.

Area of the rectangle = 8 * 16

Area of the rectangle = 128 units

Area of triangle 1 = ¹/₂ * 4 * 12

Area of triangle 1 = 24 units

Area of triangle 2 =  ¹/₂ * 4 * 16

Area of triangle 2 = 32 units

Area of triangle 2 =  ¹/₂ * 4 * 8

Area of triangle 2 =  16 units

Area of rectangle - area of triangle = 128 - ( 24 + 32 + 16)

Area of the rectangle - the area of the triangles = 56 units

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The value of the equation that defines the function is f(x) = 3(5/3)ˣ

From the question, we have the following parameters that can be used in our computation:

(0, 3) and (1, 5)

An exponential function is represented s

y = abˣ

Where,

a = y when x = 0

So, we have

y = 3bˣ

Using the other point, we have

3b = 5

This gives

b = 5/3

So, we have

f(x) = 3(5/3)ˣ

Hence, the equation defining f is f(x) = 3(5/3)ˣ

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When x = 13, the equation that is true is option D) 5(x - 9) = 20.

To determine which equation is true when x = 13, we can substitute the value of x into each equation and see which equation holds true. Let's go through each option:

A) 3(18 - x) = 67

Substituting x = 13:

3(18 - 13) = 67

3(5) = 67

15 = 67

The equation is not true when x = 13. Therefore, option A is false.

B) 4(9x) = 23

Substituting x = 13:

4(9*13) = 23

4(117) = 23

468 = 23

Again, the equation is not true when x = 13. Therefore, option B is also false.

C) 2(x - 3) = 7

Substituting x = 13:

2(13 - 3) = 7

2(10) = 7

20 = 7

Once again, the equation is not true when x = 13. Therefore, option C is false as well.

D) 5(x - 9) = 20

Substituting x = 13:

5(13 - 9) = 20

5(4) = 20

20 = 20

Finally, the equation is true when x = 13. Therefore, option D is true.

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Note: the translated questions is

X = 13, which equation is true?

Answer:

do you still need help? because to question was asked two days ago so i don´t know

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Answer:

37

Step-by-step explanation:

top triangels 3 x4 = 12

Side triangels 1 x 5 = 5

the squer   4x 5 = 20

20 +5 +12= 37

Answer:

Step-by-step explanation:

20 inches i think

Answer:

A

Step-by-step explanation:

using the sine ratio in the right triangle on the left to find the vertical side , h, and the exact value

sin60° = \(\frac{\sqrt{3} }{2}\) , then

sin60° = \(\frac{opposite}{hypotenuse}\) = \(\frac{h}{11}\) = \(\frac{\sqrt{3} }{2}\) ( cross- multiply )

2h = 11\(\sqrt{3}\) ( divide both sides by 2 )

h = \(\frac{11\sqrt{3} }{2}\)

using the sine ratio in the right triangle on the right and the exact value

sin45° = \(\frac{\sqrt{2} }{2}\) , then

sin45° = \(\frac{opposite}{hypotenuse}\) = \(\frac{h}{x}\) = \(\frac{\frac{11\sqrt{3} }{2} }{x}\) = \(\frac{\sqrt{2} }{2} }\) ( cross- multiply )

x = \(\frac{11\sqrt{3} }{2}\) × \(\frac{\sqrt{2} }{2}\) = \(\frac{11\sqrt{3(2)} }{2(2)}\) = \(\frac{11\sqrt{6} }{4}\)

The value of the expression at c = 5 is 13

To evaluate the expression, we simply proceed to substitute 5 for c

Thus, we have;