I don’t know how to do this, explanation too please

Find angle x

Answer:

30.8 degrees

Step-by-step explanation:

First, find the missing angles on the triangle to the right:

*arccosine(4.5/7) = 49.99

This is the angle between sides 7 and 4.5.

Next, using 49.99 as a reference angle, find the missing side:

tan(49.99) x 4.5 = 5.36

Next, we use arctan to find the missing angle:

*arctan(5.36/9) = 30.7761482323

Or 30.8 degrees.

*A fraction, not division ;-;

Answer:

There are 60 pencils packed in 5 boxes.

Step-by-step explanation:

36/3 = 12

There are 12 pencils in each box

12 x 5 = 60

Answer:

60 pencils

Step-by-step explanation:

1 box = 36/3 =12

in 5 boxes=12*5=60

hope it helps

A 100% non-rebreather mask has a pulse oximetry reading of 88%. There is a burn centre 45 miles distant. the best course of action to do after transferring a serious burn side.


A 50-year-old man who was injured in a fire is being treated by you. He sustained 25% 2nd–3rd degree burns to his face, neck, and anterior chest. He has burned nasal hairs, and your initial survey reveals stridor.
Any damage that exceeds 10% in size should be treated in a similar manner, although significant burns are classified as those that encompass 25% or more of the total body surface area. Rapid evaluation is essential. Any blaze can be managed using the general strategy for a significant burn. The most crucial things are to take a thorough history.

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The first and fourth functions agrees that have  y-intercepts have a difference of 3 and the slopes are both negative.

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

Let us find the slope of first graph

m=-3+2/2=-1

-1=-1(-2)+b

-1=2+b

b=-3

The first function is y=-1x-3

Second function is y=4x-6

Third function is y=4x-1

The fourth function is y=-3x-3

Hence, the first and fourth functions agrees that have  y-intercepts have a difference of 3 and the slopes are both negative.

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Answer: 3.9

Step-by-step explanation:

[tex]\frac{x}{\sin 15^{\circ}}=\frac{12}{\sin 128^{\circ}}\\\\x=\frac{12 \sin 15^{\circ}}{\sin 128^{\circ}}\\\\x \approx 3.9[/tex]

According to the given information the area of the parallelogram is 300ft².

A geometric shape having parallel sides in two dimensions is called a parallelogram. It is a type of four-sided polygon where each parallel set of sides is the same length (commonly referred to as a quadrilateral). The adjacent angles of such a parallelogram add up approximately 180 degrees.

Width of parallelogram = 20 feet.

Base of triangle = 4 feet.

Height of triangle = 15 feet.

To figure out the parallelogram's surface area:

To begin with, we would calculate the triangles' surface areas.

Note: The parallelogram supplied can be divided into two (2) triangles.

the triangle's surface area formula.

The formula: yields the triangle's area mathematically.

[tex]\begin{matrix}\mathrm{\ Area\ }=\frac{1}{2}\times\mathrm{\ base\ } \times\mathrm{\ height\ } \\\mathrm{\ Area\ }=\frac{1}{2}\times4\times15\\\mathrm{\ Area\ }=2\times15\\\mathrm{\ Area\ }=\mathbf{30}f^2\\\end{matrix}[/tex]

For the two (2) triangles:

[tex]Area =2\times30\\Area =\mathbf{60}ft^2[/tex]

For the rectangle left:

[tex]Length =15ft.\\Width =20-4=16ft.\\Area = length \times width\\Area =15\times16\\Area =\mathbf{240}ft^2[/tex]

Now, the area of the parallelogram:

Area of parallelogram =60+240

Area of parallelogram [tex]=\mathbf{300}{\rm ft}^2[/tex]

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Answer:

f = 40

Step-by-step explanation:

0.25f = 10

f = 40

Let's check

0.25(40) = 10

10 = 10

So, f = 40 is the correct answer.

An acute angle has a smaller measure than an obtuse angle.

What is acute angle ?

Acute angle can be defined in which if it is in the range between 0 to 90 degrees.

An obtuse angle is more than 90deg but less than 180deg. An acute angle is an angle smaller than a right angle. The range of an acute angle is between 0 and 90 degrees. So the correct answer is the corresponding to optin C: An acute angle has a smaller measure than an obtuse angle (if we add together an obtuse and an acute angle it will always be more than 90deg).

Therefore, An acute angle has a smaller measure than an obtuse angle.

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Answer:

y = -3/4x + 6

Step-by-step explanation:

In order to write an equation of the line in slope-intercept form, we first have to look at the equation:

y = mx + b

We have m, the slope, which is -3/4, and we have our y and x values, so in order to find b, we need to plug the other values in and solve for b

(-4,3)

y = 3

x = -4

m = -3/4

y = mx + b

(3) = [tex](\frac{-3}{4} )[/tex](-4) + b

3 = -3 + b

6 = b

So, equation of the line in slope-intercept form that passes through point (-4,3) and has a slope of -3/4, is y = -3/4x + 6

I hope this helps! :)

Step-by-step explanation:

[tex] \frac{x}{ \sin(46) } = \frac{5}{ \sin(29) } \\ x = 5 \times \frac{ \sin(46) }{ \sin(29) } \\ x = 7.42[/tex]

Answer:

i think line b is the best fit

Step-by-step explanation:

hii friend

Answer:

p = 11

q = 34

r = 91

Step-by-step explanation:

If each term (after the first two terms) is the sum of the previous two terms:

[tex]\implies p+23=q[/tex]

[tex]\implies 23+q=57[/tex]

[tex]\implies q+57=r[/tex]

Solve the second equation for q:

[tex]\implies 23+q=57[/tex]

[tex]\implies 23+q-23=57-23[/tex]

[tex]\implies q=34[/tex]

Substitute the found value of q into the first equation and solve for p:

[tex]\implies p+23=34[/tex]

[tex]\implies p+23-23=34-23[/tex]

[tex]\implies p=11[/tex]

Substitute the found value of q into the third equation and solve for r:

[tex]\implies 34+57=r[/tex]

[tex]\implies r=91[/tex]

Therefore:

need to be 20 character long so the answer is 2x²+12x-16 the answer is C

The prime factorization of the radicand 2 is 9√15.

A number can be expressed as the product of its prime components through the process of prime factorization. A number with precisely two elements, 1 and the number itself, is said to be a prime number.

As an illustration, let's use the number 30. We know that 30 = 5 × 6, but 6 is not a prime number. The number 6 can further be factorized as 2 × 3, where 2 and 3 are prime numbers. Therefore, the prime factorization of 30 = 2 × 3 × 5, where all the factors are prime numbers.

Given that,

x= 3√135

Solving the equation further using the rule √A*B = √A*√B

x= 3√9*15

x= 3√9*√15

x=3*3*√15

x= 9√15

Therefore, the prime factorization of the radicand 2 is 9√15.

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Answer:

Manish covers more distance. He covers 960m whereas Santosh only covers 480m

Step-by-step explanation:

First we compute the perimeter of the square track

Perimeter of a square of side a = 4a

Here a = 80m

Perimeter of the square of side 80 =>  4 x 80 = 320 m

Since Manish runs 3 times around it, total distance covered = 3 x 320 = 960

The perimeter of a rectangle with length L and breadth B = 2(L + B)

So perimeter of the rectangular track = 2(80 + 40) = 2 x 120 = 240

Since Santosh ran twice around this, total distance covered = 2 x 240 = 480

The probability of a randomly selected integer from 1 to 40 being prime, given that it is odd, is 18/40.

Probability is the measure of how likely an event is to occur. It is expressed as a number between 0 and 1, where 0 means the event will never happen, and 1 means the event is certain to happen. Probability is used to make predictions or calculated decisions about the outcome of a random event. Probability is used in many areas of life, from gambling and finance to science and engineering.

This is because there are 18 prime numbers between 1 and 40 that are odd: 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, and 41. Thus, the probability of a randomly selected integer from 1 to 40 being prime, given that it is odd, is 18/40.

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James can conclude about lack of carbon-14 is  ; ( E ) Without carbon-14, James can use relative dating to estimate the age of the fossil.

Relative dating, while it will not give an exact age, can estimate the age of the fossil. James could take a look at the relative order of past events and estimate the age of the fossil that way.

It is important to know that all animals have carbon-14. Carbon 14 is in the air in carbon dioxide molecules, which animals produce through cellular respiration.

James can utilize relative dating, which can be used as a substitute to determine the age of fossils in the absence of Carbon-14, which is essential for Carbon dating, as Carbon-14 is not present in the animal fossils he is studying.

A scientific method of identifying an object's age in relation to another is called relative dating ( i.e. determining the relative order of events ).

We may thus draw the conclusion that James can determine the age of the fossil using relative dating in the absence of carbon-14.

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Complete question:

The equation of a curve which intersects at right angles every curve of the family y = 1 / x + k is: y = x^3 / 3. The correct option is D.

The given equation:

y = 1/x + k.

And since y’ = –1 / x^2

So, the desired curve satisfies:

y’ = x^2

From the given equation we get:

dy / dx = –1 / x^2

any suitable function would have the negative reciprocal slope, so:

df / dx = x^2 / 1 = x^2

So, f(x) = x^3 / 3

Hence, the equation that intersects at right angles of  y = 1 / x + k is y = x^3 / 3.

Generally, an intersection curve consists of the common points of two transversally intersecting surfaces, which means that at any common point the surface normal are not parallel. This restriction excludes cases in which the surfaces are touching or have surface parts in common.

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Answer: translation

Step-by-step explanation:

the shape got shifted which is a translation

Answer:

The standard form of the equation of a line is:

y = mx + b

Where m is the slope of the line and (x,y) is a point on the line. We know that the line passes through the point (4, -11) and has a slope of 3/4.

We can use the point-slope form to find the equation of the line:

y - y1 = m(x - x1)

Where (x1, y1) is the point on the line and m is the slope.

Substituting in the given information we get:

y - (-11) = (3/4)(x - 4)

Simplifying the equation we get

y = (3/4)x + (33/4)

This is the equation of the line in standard form.

The truck is 6.325 feet long.

Percentage is defined as the parts of a number per fraction of 100. We have to divide a number with it's whole and then multiply with 100 to calculate the percentage of any number.

So the percentage actually means a part per 100.

Percentage is usually denoted by the symbol '%'.

Given that,

A car is 5.5 ft long. A truck is 15% longer than the car.

Length of car = 5.5 feet

Length of truck = 5.5 + (15% × 5.5)

                         = 5.5 + [(15/100) × 5.5]

                         = 5.5 + (0.15 × 5.5)

                         = 5.5 + 0.825

                         = 6.325 feet

Hence the length of the truck is 6.325 feet.

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Step-by-step explanation:

2(x-1) = 3(x+2)

2x-2 = 3x+6

2x-3x = 6+2

-x = 8

Answer: 5 4/7

Step-by-step explanation: First, we need to change both 1 5/7 and 3 1/4 into an improper fraction. So:

[tex]1 \frac{5}{7}[/tex] = [tex]\frac{12}{7}[/tex]

[tex]3\frac{1}{4}[/tex] = [tex]\frac{13}{4}[/tex]

So, now we need to cross-multiply 12/7 and 13/4.

That'd be 156/28

But wait. We analyze that 156 and 28 can be reduced by 4

So, 156 divided by 4 is 39, and 28 divided by 4 is 7. So now our improper fraction is 39/7. To make it an improper fraction, we divide 39 by 7, which would give us 5 4/7. I hope this helped!

The solution to the system of equations for 3x+6y=18 and X-12y=31 are:

X=37/7 and Y=25/14

A system of equations is a set of one or more equations involving a number of variables.

A system of equations is also known as a set of simultaneous or equation systems.

Now, consider the given equations:

3x+6y=18--------(1)

X-12y=31---------(2)

the equation can be rewritten as 3x+6y-18=0, by taking the common number in the equation we get:

x+2y-6=0 as x+2y=6----(3)

To solve the equations add them (2)+(3)

X-12y=31

X+2y=6

changing the signs we get

14y=25

y=25/14

Now substitute y value equation(3)

X+2(25/14)=6

7X+25=42

7X=37

X=37/7

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You can use a compass and set its angle such that it the radius of the circle that it will draw is less than that of WX's length but longer than its half. Use it to make 4 arcs.

Making 4 arcs (2 arcs up and down from W and 2 arcs up and down from X which intersect the previous two arcs) with the circle of radius smaller than the length of  WX will give two points on a perpendicular bisector.

How to find the perpendicular bisector of a line segment with the help of a compass and a straightedge?

The construction steps are as follows:

Let the line segment to be bisected(divided into two equal parts) by a perpendicular line(that perpendicular bisecting line is called the perpendicular bisector of the given line segment) be WX

Take a compass and set its radius length smaller than the length of WX and longer than half of WX

Put the tip of the compass on W and make an arc upside of WX

Now make an arc downside of WX

Repeat the above two steps but now with the tip being on X such that two new arcs intersect the previous two arcs.

Use a straightedge and join both the points of intersection of arcs.

The obtained line is the perpendicular bisector of the line segment WX

Using the above method, we get the perpendicular bisector of WX  shown in the below-attached figure.

Thus,

Making 4 arcs (2 arcs up and down from W and 2 arcs up and down from X which intersect the previous two arcs) with a circle of radius smaller than the length of  WX will give two points on a perpendicular bisector.

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You can use a compass and set its angle such - 1

When he is 10 feet from the base of the light, the rate at which the tip of his shadow moves is 10ft/s, and when he is 10 feet from the base of the light, the rate at which the length of his shadow changes is 4ft/s.

Given, the height of a man = 6 feet

Height of light = 15 feet

Rate of walk by man, dx/dt = 5 feet per second.

a) we have to find the rate at which the tip of his shadow is moving when he is 10 feet from the base of the light.

By using ratio of similar triangles,

15/y = 6/(y - x)

On cross multiplication,

15(y - x) = 6y

15y - 15x = 6y

15y - 6y = 15x

9y = 15x

Dividing by 3 on both sides,

3y = 5x

On differentiating both sides with respect to t,

3(dy/dt) = 5(dx/dt)

dy/dt = (5/3)(dx/dt)

dy/dt = (5/3)(6)

dy/dt = 30/3

dy/dt = 10 ft/s

Therefore, the rate at which the tip of his shadow is changing is 10 ft/s.

b) we have to find the rate at which the length of his shadow is changing when he is 10 feet from the base of the light.

Length of shadow, BD = y - x

Rate of change of shadow is calculated by differentiating length with respect to time.

d(BD)/dt = dy/dt - dx/dt

d(BD)/dt = 10 - 6

= 4 ft/s

Therefore, the rate at which the length of his shadow is changing is 4 ft/s.

Thus, when he is 10 feet from the base of the light, the rate at which the tip of his shadow moves is 10ft/s, and when he is 10 feet from the base of the light, the rate at which the length of his shadow changes is 4ft/s.

Complete question:

A man 6 feet tall walks at a rate of 5 feet per second away from a light that is 15 feet above the ground. (a) When he is 10 feet from the base of the light, at what rate is the tip of his shadow moving? (b) When he is 10 feet from the base of the light, at what rate is the length of his shadow changing?

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The area of one of the pentagons is about 6.9 inches^2

The area of a regular pentagon can be calculated by using the formula: A = (perimeter x apothem) / 2.

Since we know that the side length of one of the pentagons is 2 inches, we can calculate the perimeter by multiplying the side length by the number of sides: P = 2 inches x 5 sides = 10 inches.

The apothem of the pentagon is given as 1.38 inches.

Therefore, we can substitute these values into the formula: A = (10 inches x 1.38 inches) / 2 = 6.9 inches^2

So the area of one of the pentagons is about 6.9 inches^2.

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Point D is the center of rotation in the given figure.

A pair of numbers called coordinates are used to locate a point or a form in a two-dimensional plane. The x-coordinate and the y-coordinate are two numbers that define a point's location on a 2D plane.

Triangle A'B'C' rotating about the point d. Observe the Positional relation between ABC and A'B'C' you can get the result. There is no more information given Otherwise i will prove it to you theoretically.

Therefore, Point D can be described as Center of rotation.

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Complete question:

A function that represents the balance y (in dollars) of the investment account after t year is y = $120 × (1 + 0.064/4)^(4t).

The balance of an investment account is the sum of all deposits and withdrawals to/from an investment account, considering the manager's compensation calculation.

After the trading interval ends and compensation is paid out, the account balance will equal the equity.

Let y be the investment account balance (in dollars) after t years. Then,

y = $120 × (1 + 0.064/4)^(4t)

Where the interest rate is 6.4% and is compounded quarterly.

So the interest rate per quarter is 0.064/4.

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This proof shows that the zero vector is in Col A, the vector Ax C Aw is in Col A, and c.Ax/ is in Col A, given a scalar c. This proves Theorem 3, which states that an element in Col A has the form Ax for some x in Rn.

a. The zero vector is in Col A because it is the result of multiplying the zero vector in Rn by matrix A. Therefore, A(0) = 0, which is the zero vector in Col A.

b. To show that the vector Ax C Aw is in Col A, we need to show that Ax C Aw can be written in the form A(x + w) for some vectors x and w in Rn. Since Ax and Aw are in Col A, they can be written as A(x) and A(w) for some vectors x and w in Rn. Therefore, Ax C Aw = A(x + w). Thus, the vector Ax C Aw is in Col A.

c. Given a scalar c, we need to show that c.Ax/ is in Col A. We can rewrite c.Ax/ as cA(x). Since A(x) is in Col A, then cA(x) is also in Col A. Therefore, c.Ax/ is in Col A.

This proof shows that the zero vector is in Col A, the vector Ax C Aw is in Col A, and c.Ax/ is in Col A, given a scalar c. This proves Theorem 3, which states that an element in Col A has the form Ax for some x in Rn.

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