The diagram shows a periscope used to see objects that are behind or under a barrier. What makes it possible to see an object when looking through a periscope? The periscope –
A. contains mirrors that reflect the object
B. magnifies small objects so they can be seen
C. absorbs the light rays passing through it
D. separates the light into different colors

Answer:

357 passengers

Step-by-step explanation:

\(\frac{x}{420}=\frac{85}{100}\) (The \(\frac{85}{100}\) is 85% of the 100% people because 15% is missing)

When you cross-simplify you get: \(\frac{x}{21}=\frac{85}{5}\) which is \(\frac{x}{21}=17\)

Finally, multiply 17 by 21 to get x.

Therefore, x=357

Answer:

to find you first take 20 make 3 boxes the least you can put in the boxes is 5 because if you are counting by 5 you have 5 10 and 15 and 20 so the lease you can do is 5 per box so now in total you have 15 and 5 left over remember she has 2 left for her so the other 3 will separately go 1 into each box so theirfore you would have 6 muffins per box

Step-by-step explanation:

6:3 is the ratio because it is 6 muffins to each box

Answer:

6

Step-by-step explanation:

because 20 divided by 3 is 6 and 2 left over

We get equation B from equation A by Multiplying /dividing both sides by the same non-zero constant i.e., 4.

A non-zero constant polynomial is written as: p(x) = c, where c is a non-zero real number. This means that for all possible values of x, p(x) = c, i.e. it is never 0. Thus, a non-zero constant polynomial does not have any zeroes.

Given

\(\frac{x}{4}+1 =-3\)

Multiply/divide both sides by the same non-zero constant i.e., 4.

⇒ \(4\times(\frac{x}{4}+1) =4\times-3\)

⇒ x + 4 = -12

Hence, We get equation B from equation A by Multiplying /dividing both sides by the same non-zero constant i.e., 4.

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Answer:

90

Step-by-step explanation:

Hey there!

Well 90.000 to the nearest tenth is just 90 because there is no decimal places to round.

Hope this helps :)

Answer:

90

Step-by-step explanation:

90 has 0 ones so 90 is just 90, but rounded...

Answer: D

Step-by-step explanation:

To solve this problem, we need to know our exponent properties. We know that if you have parenthesis around the exponent, you multiply the exponents.

\(\frac{1}{6} *3=\frac{3}{6}=\frac{1}{2}\)

Now that we know the exponent should be 1/2, let's rewrite our expression.

\(x^{\frac{1}{2} }\)

A)  You are painting 5 faces, four sides and the bottom, of the pool because you are not painting the top of the pool.

B) Surface Area = 104 square meters

C) The paint with cost $624 total. $104 times 6 square meters equals $624.

Now, According to the question:

The given data is:

A swimming pool is 8 meters long 6 meters wide and 2 meters deep the water resistant paint need for the pool cost $6 per square meter.

A) You are painting 5 faces, four sides and the bottom, of the pool because you are not painting the top of the pool.

B) You need 104 square meters to paint the pool.

Assuming the pool is a rectangular prism, use the surface area equation:

SA = wl + 2(hl) + 2(hw)

Note: Do not include times 2 for wl because we are only including the bottom of the pool.

l = 8 meters

w = 6 meters

h = 2 meters

SA = (6)(8) + 2((2)(8)) + 2((2)(6))

SA = 104 square meters

C) The paint with cost $624 total. $104 times 6 square meters equals $624

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The equation of circle D is (x + 2)2 + y² = 32 then the points (-6,-4) and (-4,6) lie on circle D

The equation of a circle with center (h,k) and radius r is (x - h)² + (y - k)² = r².

This is called the standard form of the equation of a circle.

In the given equation, (x + 2)² + y² = 32, we can see that the center of the circle is (-2, 0) and the radius is √32 = 4√2.

To determine which points lie on the circle, we substitute the x and y coordinates of each point into the equation and check if the equation is true.

If it is true, then the point lies on the circle.

Let us check if (-6, -4) lies on the circle, we substitute x = -6 and y = -4 into the equation:

(-6 + 2)² + (-4)² = 32

(-4)² + (-4)² = 32

16 + 16 = 32

32 = 32

Since the equation is true, (-6, -4) lies on the circle.

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D.

D. natural numbers, whole numbers, and integers

Answer:

(-5, 3)

Step-by-step explanation:

Let O(x, y) be the centroid of the triangle.

The median of a triangle is a line segment that joins the vertex of a triangle to the midpoint of the opposite side. There are three medians in a triangle; and the medians of a triangle intersect at a point called the centroid.

The centroid of a triangle is gotten from the average of the x coordinates and the y coordinates of all the three vertices.

For Triangle ABC has vertices A (3,-3) B (-7,9) C (-11,3) and centroid O(x, y). Hence:

\(x=\frac{3 + (-7)+(-11)}{3}=-5\\\\y=\frac{-3 + 9 + 3}{3} =3\)

The centroid is at (-5, 3)

Answer:

18x

Step-by-step explanation:

8·x=8x+10=18x

The requried coordination of the point on the unit circle at 45° where the center is the origin is given as {√2 / 2, √2 / 2}.

If you know the lengths of two sides of a right triangle, you can use trigonometric ratios to calculate the measures of one (or both) of the acute angles.

Here,
As of the given condition,

The trig ratios, when the radius of the unit circle makes an angle for the 45° with the x-axis and the coordinate of the radius located on the circle at 45° is given as,

x coordinate = 1 × cos45
                     = 1/√2
                     = √2 / 2

Y cooridnate = 1 × sin 45
Y coordinate = √2 / 2

Thus, the requried coordination of the point on the unit circle at 45° where the center is the origin is given as {√2 / 2, √2 / 2}.

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There are 60 seconds in a minute and 60 minutes in an hour. To find the total number of instructions the computer can perform in an hour, we need to multiply the number of instructions per second by the number of seconds in an hour.

Number of seconds in an hour = 60 seconds/minute × 60 minutes/hour = 3600 seconds/hour

Total number of instructions per hour = instructions per second × seconds per hour

= 4.66 × 10^8 instructions/second × 3600 seconds/hour

= 1.6776 × 10^12 instructions/hour

Therefore, the computer can perform 1.6776 x 10^12 instructions per hour.

To look from the guest to their left to the guest to their right at a round table seating 6 people, you need to rotate by 60 degrees.

For a regular polygon with n sides, the sum of its interior angles is given by ((n - 2) × 180) degrees. In the case of a round table seating 6 people, the table can be considered as a hexagon, which has 6 sides. Using the formula, we can calculate the sum of the interior angles:

((6 - 2) × 180) / 6 = (4 × 180) / 6 = 720 / 6 = 120 degrees

Since the table forms a complete circle, the sum of the interior angles is divided equally among the guests. Therefore, each guest sits at an angle of 120 degrees. To look from the guest to their left to the guest to their right, you need to rotate by the angle between adjacent guests, which is half of the angle they sit at:

120 / 2 = 60 degrees

Thus, to look from the guest to their left to the guest to their right at a round table seating 6 people, you need to rotate by 60 degrees.

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Answer:

y=mx+b

Step-by-step explanation:

The slope-intercept formula is y=mx+b

Hope it helps!

-Ava

Answer:

y=mx+b

Step-by-step explanation:

That is the formula of slope-intercept.

I hope it helps! Have a great day!

Bee~

A ray is a part of a line that starts at a point (called the endpoint) and extends infinitely in one direction. An angle is formed when two rays share a common endpoint (vertex).

A ray has one endpoint: A ray is a one-dimensional figure that starts at a single point (the endpoint) and extends infinitely in one direction. On the other hand, an angle is formed by two rays, each with its own endpoint, meeting at a common vertex.

An angle is two rays: As mentioned earlier, an angle is created when two rays share a common endpoint. The two rays are referred to as the sides of the angle, and the endpoint they share is called the vertex.

The measure of an angle is determined by the amount of rotation: The measure of an angle is not dependent on the lengths of its sides but rather on the amount of rotation between its two rays. To measure an angle, we compare it to a standard unit of angle measurement, usually degrees. One full rotation (360 degrees) corresponds to a complete circle, and angles are measured based on the fraction of a full circle they represent.

The measure of an angle remains the same at all distances from its vertex: The measure of an angle is independent of the length of its sides or how far away an observer is from the vertex. For example, a 60-degree angle remains a 60-degree angle whether you look at it from up close or from a distance. This is because the measure of an angle depends only on the relative positions of its two rays, not on the size of the shape it forms.

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Answer:

38

Step-by-step explanation:

Plug in 5 for x in the function

f(5) = 7(5) + 3

f(5) = 35 +3

f(5)= 38

Answer:

The answer to your problem is -10

Answer:

19 bags

Explanation:

To solve this problem, we first need to convert 11 1/7 cups to a fraction with a denominator of 7. We can do this by finding a common multiple of 7 and 7 (the denominator of the fraction 1/7) and then multiplying the fractions by the necessary multiples to get them to have a denominator of 7:

11 1/7 cups = (11*7 + 1)/7 cups = 77/7 cups

Next, we need to divide the total amount of snack mix by the amount of snack mix in each bag to find the total number of bags needed:

(77/7 cups) / (3/7 cups/bag) = (77/3)/(7/7 cups/bag) = 11/1 = 11 bags

Finally, we need to round up to the nearest whole number, since we can't have a fraction of a bag. Therefore, Dad will need a total of 19 bags.

Answer:

Option A, y = -1/3x + 2

Step-by-step explanation:

Step 1:  Determine the equation

Looking at the graph we can see that the line will intersect the y-axis at around 2 units which eliminates options B and D.  Now, looking at the slope of the graph we see that it's going in a downward trend which means that the slope is negative.  That eliminates option C which leaves us with the only option of A.

Answer: Option A, y = -1/3x + 2

Answer:

d. -18

Step-by-step explanation:

f(-3) = 10x - 3x + 3

10(-3) - 3(-3) + 3

-30 + 9 + 3

-30 + 12

= -18

Please mark me the Brainliest!?!

Answer:

C) $3.77

Step-by-step explanation:

The probability is that this is least 2 collisions within the next 3 insertions using linear probing is 0.7.

Required probability

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The difference between a type II error and a type I error is that a type I error rejects the null hypothesis when it is true (i.e., a false positive). The probability of committing a type I error is equal to the level of significance that was set for the hypothesis test.

The null hypothesis in inferential statistics is that two possibilities are equal. The underlying assumption is that the observed difference is just the result of chance. It is feasible to determine the probability that the null hypothesis is correct using statistical testing.

A statistical hypothesis known as a null hypothesis asserts that no statistical significance can be found in a collection of provided observations. Using sample data, hypothesis testing is performed to judge a theory' veracity. It is sometimes referred to as just "the null," and its symbol is H0.

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F(x, y, y', y",..., y(n-1)) is the expression for the function f.

1. Rewrite the given differential equation as y (n) = f (x, y, y', y",..., y (n 1)).

2. Identify y as the dependent variable, y', y",..., y(n-1), as the derivatives of y up to order n-1. X is the independent variable.

3. The right-hand side of the equation, f(x,y,y',y",...,y(n-1)), provides the expression for the function f.f(x,y,y',y",...,y(n-1)) is the expression for the function f, where x is an independent variable, y is the dependent variable, and y', y",...,y(n-1) are y's derivatives up to order n-1. The right-hand side of the equation provides the expression for the function f when the differential equation is written as y (n) = f (x, y, y', y",..., y (n 1)). Consequently, f is a function of x, y, y', y",..., and y. (n-1). The differential equation is resolved using this expression for f.

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Answer:

400 student

55/100 * x(unknown) = 220

55x/100 =220

CROSS MULTIPLY

55X = 22000

X = 22000/55

X = 400

The total number of students at the King School is 440.

Given that, at the King School, 55% of the students take a bus to school.

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

Let the total number of students be x

So, 55% of x =220

⇒ 55/10 ×x=220

⇒ 0.55x=220

⇒ x=220/0.55

⇒ x=440

Therefore, the total number of students at the King School is 440.

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Main Answer:The volume is \(\pi\)/6.

Supporting Question and Answer:

How can we determine the volume using the slicing method when the slices are semicircles perpendicular to the x-axis?

To determine the volume using the slicing method with semicircular slices perpendicular to the x-axis, we need to integrate the areas of the infinitesimally thin slices over the range of x-values. The radius of each semicircle depends on the x-coordinate, and we can use the formula for the area of a semicircle to calculate the area of each slice. By integrating the areas over the given range, we can obtain the total volume of the solid.

Body of the Solution:To find the volume using the slicing method, we need to integrate the areas of the infinitesimally thin slices perpendicular to the x-axis.

In this case, the slices perpendicular to the x-axis are semicircles. The radius of each semicircle depends on the x-coordinate.

Let's denote the variable of integration as x and consider a slice at a specific value of x. The corresponding semicircle's radius is given by r = 1 - x (since the triangle's height is 1 and decreases linearly with x).

The area of a semicircle is given by A = (1/2) * \(\pi\) * r^2.

Integrating the area over the range of x from 0 to 1, we get:

V = ∫[0,1] A dx = ∫[0,1] (1/2) * \(\pi\) * (1 - x)^2 dx

Simplifying and evaluating the integral, we get:

V = (\(\pi\)/2) * ∫[0,1] (1 - 2x + x^2) dx = (\(\pi\)/2) * [x - x^2/2 + x^3/3] |[0,1] = (\(\pi\)/2) * [1 - 1/2 + 1/3] = (\(\pi\)/2) * [2/6] = \(\pi\)/6

Final Answer:Therefore, the volume of the solid bounded by the triangle and the semicircles is π/6, rounded to two decimal places.

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The volume off the given triangle is π/6.

How can we determine the volume using the slicing method when the slices are semicircles perpendicular to the x-axis?

To determine the volume using the slicing method with semicircular slices perpendicular to the x-axis, we need to integrate the areas of the infinitesimally thin slices over the range of x-values. The radius of each semicircle depends on the x-coordinate, and we can use the formula for the area of a semicircle to calculate the area of each slice. By integrating the areas over the given range, we can obtain the total volume of the solid.

To find the volume using the slicing method, we need to integrate the areas of the infinitesimally thin slices perpendicular to the x-axis.

In this case, the slices perpendicular to the x-axis are semicircles. The radius of each semicircle depends on the x-coordinate.

Let's denote the variable of integration as x and consider a slice at a specific value of x. The corresponding semicircle's radius is given by r = 1 - x (since the triangle's height is 1 and decreases linearly with x).

The area of a semicircle is given by A = (1/2) *  * r^2.

Integrating the area over the range of x from 0 to 1, we get:

V = ∫[0,1] A dx = ∫[0,1] (1/2) *  * (1 - x)^2 dx

Simplifying and evaluating the integral, we get:

V = (/2) * ∫[0,1] (1 - 2x + x^2) dx = (/2) * [x - x^2/2 + x^3/3] |[0,1] = (/2) * [1 - 1/2 + 1/3] = (/2) * [2/6] = /6

Final Answer:Therefore, the volume of the solid bounded by the triangle and the semicircles is π/6, rounded to two decimal places.

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The solution of the linear equation x -  6 = - 18 will be negative 12.

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The linear equation is given below

x -  6 = - 18

If the degree of the equation is 1, then the equation will be a linear equation.

Simplify the equation, then we have

x -  6 = - 18

x = - 18 + 6

x = - 12

The solution of the linear equation x -  6 = - 18 will be negative 12.

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Answer:

u think its A if not sorry

Step-by-step explanation: