3. PHYSICS Suppose you are traveling in a car when a beam of light passes from the air to the windshield. The measure of the angle of incidence 0; is 55°, and the measure of the angle of refraction 0, is 35.25⁰. sin i Use Snell's Law, = n, to find the index of sin Or refraction n of the windshield to the nearest thousandth​

Step-by-step explanation:

\(1meter = 39.37inches \\ 8.104meters = (39.37 \times 8.104)inches \\ = 319.05448inches\)

There are \(3.1496\cdot 10^6\) inches in \(8\cdot 10^4\) meter.

Important information:

Using the given information,

1 meter = 39.37 inches

Using this conversion, we get

\(8\cdot 10^4\) meter = \(39.37\times (8\cdot 10^4)\) inches

\(8\cdot 10^4\) meter = \(39.37\times 80000\) inches

\(8\cdot 10^4\) meter = \(3149600\) inches

\(8\cdot 10^4\) meter = \(3.1496\cdot 10^6\) inches

Therefore, there are \(3.1496\cdot 10^6\) inches in \(8\cdot 10^4\) meter.

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Answer: y=1.25

Step-by-step explanation:

First things first you have to find what is in the bracket things (i don’t know what it’s called) So 3 - 7 is -4y but since it’s absolute it’s going to be 4y.

So now you’ve got 4y - 10 = -5. Your going to want to eliminate 10 so, subtract 10 to both sides giving you 4y = -5

Lastly to get y by itself you need to divide it by its self so, 4y divided by 4. Do it to both sides. This gives you…

Y = 1.25

Answer: The distance between W and X

if it helps, jump from the dash under W to the next dash until you get to X, you'll get 5 units

Hope this helps you and I hope you have a nice day :)

Answer:

25

Step-by-step explanation:

Answer:

25 lawns

Step-by-step explanation:

Since he can mow 5 lawns in 2 hours he can mow:

10 lawns in 4 hours

15 lawns in 6 hours

20 lawns in 8 hours

25 lawns in 10 hours

Hope this helps! It's a pattern! :D

Using a system of equations, the number of children and adults who attended the movies is as follows:

A system of equations is two or more equations solved concurrently.

A system of equations is also known as simultaneous equations.

The total number of people who went to the movies = 100

The unit cost of adult tickets = $4

The unit cost of children tickets = $2

The total sales = $276

Let the number of children who attended the movies = x

Let the number of adults who attended the movies = y

x + y = 100 ... Equation 1

2x + 4y = 276 ... Equation 2

Multiply Equation 1 by 2:

2x + 2y = 200 ... Equation 3

Subtraction Equation 3 from Equation 2:

2x + 4y = 276

-

2x + 2y = 200

2y = 76

y = 38

Substitute y = 19 in equation 1:

x + y = 100

x + 38 = 100

x = 62

Check in Equation 2:

2x + 4y = 276

2(62) + 4(38) = 276

124 + 152 = 276

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Answer:

Step-by-step explanation:

C and F are supplementary angles.

C = 180°-79° = 101°

The area of the parallelogram is equal to: D. 4 over 25 square foot.

Mathematically, the area of a parallelogram can be calculated by using this formula:

Area of a parallelogram = b × h

Where:

Based on the information provided above, the actual base of the parallelogram is given by:

Actual base of parallelogram = 3/5 - 1/5

Actual base of parallelogram = 2/5 foot.

Substituting the given parameters into the area of a parallelogram formula, we have the following;

Area of a parallelogram = 2/5 × 2/5

Area of a parallelogram = 4/25 square foot.

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The answer when the expression 12.10² is multiplied is 1200. The right option is c. 1200

To multiply means to add equal groups. When we multiply, the number of things in the group increases.

To multiply 12.10², we use the technique below.

From the question,

Given:  12.10²

Change the . to multiplication.

From the law of indices,

Therefore,  12.10² = 12×100 = 1200.

Hence, the right option is c 1200

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Answer:

If we do square on both sides we get two answers i.e. (x+12)^2=(3x+20)^2

(x^2)+24x+144=(9x^2)+120x+400

(8x^2)+96x+256=0

(x^2)+12x+32=0

(x+4)(x+8)=0

x= -4 or x= -8.

Else we have another method

x+12=3x+20

x+12–20=3x

x-8=3x,

Now square on both sides.

(x-8)^2=(3x)^2

x^2–16x+64=(9x^2)

(9x^2)-(x^2)+16x-64=0

(8x^2)+16x-64=0

(x^2)+2x-8=0

(x+4)(x-2)=0

x= -4 or x= 2.

But It Didn’t Satisfy for The Equation When

x=2 or x= -8,So The Value of x will be -4 which satisfies given question.

Answer:

Take the number 10 and put it on the first box, next take the 315 degrees and put it on the 2nd box

The numerical value of the algebraic expression 1.5 × 6 + 8.3 is 17.3; The factors are 1.5 and 6 & the terms: 1.5 * 6 and 8.3

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

1.5 × 6 + 8.3

The above expression is an algebraic expression and as such the parts of the expressions are

When the expression is evaluated, we have

1.5 × 6 + 8.3 = 17.3

This means that the result of evaluating the expression 1.5 × 6 + 8.3 is 17.3

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Answer:

c

Step-by-step explanation:

Answer:

This guy is right (option c)

Answer:

C (95 people)

Step-by-step explanation:

380 is basically like 100% so 380÷100= 3.8 (which is equal to 1%), then use a calculator to do 3.8x25=95 (this makes 25%)

Answer:

C.95

Step-by-step explanation:

25/100=0.25

380*0.25=95

Answer:

Solution

\(x = - 3,\: y = -3\)

Step-by-step explanation:

If the objective is to solve for the system of equations
- 7x - 5y = 36    [1]

x = 2y + 3    [2]

Then the process is as follows

The inequality value that would be able to show/x/ ≤ 5 is option A

In mathematics, inequality refers to a mathematical statement that expresses a relationship between two quantities, indicating that one quantity is greater than, less than, or not equal to the other.

The symbol that we have  is telling us that the value of the x would be less than  or it would be seen to be equal to five.

We can see that /x/ ≤ 5 would exclude the negative values and this can be seen in the option that is marked option A

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The correct step to prove that \(BC^2 = AB^2 + AC^2\) is:

By the cross product property, \(AC^2 = BC \cdot AD\).

To prove that \(BC^2 = AB^2 + AC^2\), we can use the triangle similarity and the Pythagorean theorem. Here's a step-by-step explanation:

Given triangle ABC with right angle at A and segment AD perpendicular to segment BC.

By triangle similarity, triangle ABD is similar to triangle ABC. This is because angle A is common, and angle BDA is a right angle (as AD is perpendicular to BC).

Using the proportionality of similar triangles, we can write the following ratio:

\($\frac{AB}{BC} = \frac{AD}{AB}$\)

Cross-multiplying, we get:

\($AB^2 = BC \cdot AD$\)

Similarly, using triangle similarity, triangle ACD is also similar to triangle ABC. This gives us:

\($\frac{AC}{BC} = \frac{AD}{AC}$\)

Cross-multiplying, we have:

\($AC^2 = BC \cdot AD$\)

Now, we can substitute the derived expressions into the original equation:

\($BC^2 = AB^2 + AC^2$\\$BC^2 = (BC \cdot AD) + (BC \cdot AD)$\\$BC^2 = 2 \cdot BC \cdot AD$\)

It was made possible by cross-product property.

Therefore, the correct step to prove that \(BC^2 = AB^2 + AC^2\) is:

By the cross product property, \(AC^2 = BC \cdot AD\).

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Answer:

Given the quantitative data, the five classes would be:

Number of data given, n = 20

________________________

100 to 150:

Frequency = 1

Cumulative frequency = 1

Relative frequency \( = \frac{1}{20} = 0.05 \)

Cumulative relative frequency \( = \frac{1}{20} = 0.05 \)

__________________________

150 to 200:

Frequency = 0

Cumulative frequency = 0 + previous cumulative frequency = 0 + 1 = 1

Relative frequency = 0

Cumulative relative frequency \( = \frac{1}{20} = 0.05 \)

__________________________

200 to 250:

Frequency = 8

Cumulative frequency = 9 + previous cumulative frequency = 8 + 1 = 9

Relative frequency \( = \frac{8}{20} = 0.4 \)

Cumulative relative frequency \( = \frac{9}{20} = 0.45 \)

__________________________

250 to 300:

Frequency = 9

Cumulative frequency = 9 + previous cumulative frequency = 9 + 9 = 18

Relative frequency \( = \frac{9}{20} = 0.45 \)

Cumulative relative frequency \( = \frac{18}{20} = 0.9 \)

__________________________

300 to 350:

Frequency = 2

Cumulative frequency = 2 + previous Cumulative frequency = 2 + 18 = 20

Relative frequency \( = \frac{2}{20} = 0.1 \)

Cumulative relative frequency \( = \frac{20}{20} = 1 \)

__________________________

As a result, option 3 is correct because √3 is a part of a collection of irrational and real numbers.

Numbers that are integers cannot be fractions or decimals. They can only be positive or negative whole numbers. Examples are 2, 7, 0, -9, -12, and so forth.

The fact that the number √3 cannot be written as the proportion of two integers makes it an irrational number. It is specifically the square root of 3 that is positive.

Because not all whole integers are irrational—for instance, 4 is not only a complete number but also a rational number—option 1, which contains both and whole irrational numbers, is inaccurate.

Option 2, which combines integers and natural numbers, is erroneous because not all integers and natural numbers are irrational.

Option 4, which combines integers and rational numbers, is erroneous because irrational numbers are not rational numbers because they cannot be stated as ratios of integers.

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Answer:

first one

y=3x-3

second one

y=1/-3x+1

Answer:

donkeey kongy

Step-by-step explanation:

So, Gina's farm produced approximately 471.8 tons of sweet potatoes this year. Rounded to the nearest whole number, this is 472 tons.

When we talk about an increase, we are referring to a change in quantity or value that is greater than the original amount. In other words, an increase means that something has gotten bigger, larger, or more than it was before.

Given by the question.

To find out how much sweet potatoes Gina's farm produced this year, we need to add 40% of last year's production to the amount produced last year:

40% of 337 tons = 0.4 x 337 = 134.8 tons

Adding this to last year's production gives:

337 + 134.8 = 471.8 tons

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The interest earned after 3 months is $75

What is simple interest?

The simple interest on a deposit is the principal deposited multiplied by the interest and the time the deposit lasted

I=PRT

I=interest=unknown

P=principal=$6000

R=interest rate=5%

T= 3 months=0.25 year

I=$6000*5%*0.25

I=$75

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Answer:

75 dollars

Step-by-step explanation:

i got it right

Answer: 2a < 2b

Step-by-step explanation:

We are given a statement:

a < b and b < c, then 2a ____ 2b

We can use simple numbers that make the statement true.

Where,

a = 2

b = 3

c = 4

Now lets plug it in.

2 < 3 and 3 < 4, then 2(2) ____ 2(3)

and lets simplify:

2 < 3 and 3 < 4, then 4 ____ 6

We can see that 4 is less than 6,

so as a is less than b, 2a is less than 2b.

The only thing changing is the coefficient being multiplied by the variables a and b.

The requried, probability that both the first digit in the last digit of the three-digit number is even numbers is 20%.

To count the number of three-digit numbers with distinct digits that can be formed using the digits 1, 2, 3, 5, 8, and 9, we can use the permutation formula:

P(n, r) = n! / (n-r)!

In this case, we have n = 6 (since we have 6 digits to choose from) and r = 3 (since we want to form three-digit numbers). Using the formula, we get:

P(6, 3) = 120

We can choose the first digit in two ways (2 or 8), and we can choose the last digit in three ways (2, 8, or 6). For the middle digit, we have four digits left to choose from (1, 3, 5, or 9), since we cannot repeat digits. Therefore, the number of three-digit numbers with distinct digits that have an even first and last digit is:

2 x 4 x 3 = 24

The total number of three-digit numbers with distinct digits is 120, so the probability that a randomly chosen three-digit number with distinct digits has an even first and last digit is:

24/120 = 0.2 or 20%

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Explanation: To understand this problem we need to know that there are two different types of probability. The experimental probability and the theoretical probability.

- The experimental probability occurs once you conduct the experiment and after the experiment, you calculate the probability using the result of the experiment.

- The theoretical probability occurs before the experiment. Once you have information about the situation so you calculate the probability the get a specific result before trying.

Step 1: For this question, once we have a number cube with faces 1,2,3,4,5 and 6 and we want to know the experimental probability to get a 5 once you roll the cube 300 times you would need to get in real life a number cube and to roll it 300 times. After this experiment we would get all the results of each time we roll it and we would know how many times (from 300 times) we got a number 5. After that, we would use the following formula

Once the get this result we finish the question.

Answer:

It is correct please I do not want yo sound rude can you give me brainliest answer.

Answer:

correct steps

Step-by-step explanation:

if asked to find angles in terms of the ratios, then don't forget to shift sin / cos / tan across the equal sign and change it to arc sin / cos / tan.

The 3rd answer, y = 2x + 3

The graph has a y-intercept of positive 3. The y-intercept is when x is equal to 0 on the line.

9514 1404 393

Answer:

Step-by-step explanation:

a) For payments made at the beginning of the period, the annuity is called an "annuity due." The formula in the first attachment tells how to compute the payment for a given present value ($500,000), number of periods (N=10), and interest rate (i=0.08).

  pmt = $500,000/(1 +(1 -(1 +i)^(-N+1))/i) = $500,000/(1 +(1 -(1.08^-9))/.08)

  pmt ≈ $68,995.13 . . . . annual payment

__

b) After the first payment, the account balance is ...

  $500,000 -68,995.13 = $431,004.87

After subsequent payments, the account balance will be ...

  $431,004.87×1.08 -68,995.13 = $396,490.13 . . . after 2nd payment

  $396,490.13×1.08 -68,995.13 = $359,214.21 . . . after 3rd payment

The payment amount that can be made in perpetuity is the amount of the monthly interest on this balance:

  X = $359,214.21 × (0.08/12) = $2394.76

Step-by-step explanation:

0 the answer is definitely 0 I'm so smart totally

Answer:

0

Step-by-step explanation:

there's x0

The angle LKJ in the triangle is 49 degrees.

The sum of angles in a triangle is 180 degrees. The measure of the angle LKJ can be found as follows:

Therefore, the angle LKJ can be found using trigonometric ratios as

follows:

Not the triangle is a right angle triangle. Therefore, one of its angles is 90 degrees.

Hence,

tan x = opposite / adjacent

tan x = 8.9 / 7.7

tan x = 1.15584415584

x = tan ⁻¹ 1.15584415584

x = 49.1346675513

Therefore,

angle LKJ = 49 degrees

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