preciso de ajuda por que eu não sei matemática

Answer:

u

Step-by-step explanation

The equation of the plane passing P (1,2,1) and orthogonal to the two planes: x-y-z-10 = 0, x-2y + z-2=0 is -3x-2y-z+8=0.

Equation of plane passing through (x1,y1,z1) is given by

A(x-x1)+B(y-y1)+C(z-z1)=0

where, A, B, and C are direction ratios

In the question, it is given that the plane passes through (1,2,1)

So, the equation of the plane will be in the form,

A(x-1)+B(y-2)+C(z-1)=0

It is also given that the plane is perpendicular to give 2 planes.

So, their normal to the plane would be perpendicular to the normal of both planes.

So, the required normal is a cross-product of the normals of planes

x-y-z-10=0 and x-2y+z-2=0

i.e,

-3i-2j-k=0

so, the direction ratios,

A=-3, B=-2, C=-1

putting the direction ratios in the previous equation of the plane,

-3(x-1)-2(y-2)-1(z-1)=0

-3x+3-2y+4-z+1=0

-3x-2y-z+8=0

is the required equation of the plane

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The fraction in eights of the Apple pie that the person baked, is 2 / 8 of the apple pie.

The number of pieces that the apple pie had was 8 pieces to start. This means that if the baker served 1 / 4 of this, you can find the fractions in eights by multiplying the fraction served by the number of pieces :

= Fraction served x Number of pieces

= 1 / 4 x 8

= 8 / 4

= 2 pieces

The fraction in eights of the Apple that was served was :

= Number of pieces served / Number of total pieces

= 2 / 8

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Step-by-step explanation:

that is really simple, because the additional half-circle compensates for the missing half-circle on the other side.

so, the area is plain and simple the area of the rectangle, which is

13×12 = 156 = 156.0

Answer:

142 bags

Step-by-step explanation:

0.5KG is half of a KG, so we can start by finding half of $9.90

$9.90/2 being $4.95

So each bag is $4.95

The total is $702.90

Dividing $702.90/$4.95 will equal the number of bags

702.9/4.95=142 bags

We can write the measurement of ∠DAC as -

∠DAC = ∠ADB - ∠DCA

A triangle is a polygon with three edges and three vertices.

Given is a triangle ABC.

The external angle is the sum of two interior opposite angles.

We can write -

∠ADB = ∠DAC + ∠DCA

So, we can write -

∠DAC = ∠ADB - ∠DCA

Therefore, we can write the measurement of ∠DAC as -

∠DAC = ∠ADB - ∠DCA.

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The statement "The equation y = 3x - 5 represents a function." is; TRUE

The statement "A function can only be represented by a straight line on the coordinate plane." is; FALSE

A linear function is one that is formed when a variable y varies directly with a variable x. That is, when y increases, x also increases and the opposite is also true.

The equation y = 3x - 5 represents a function.  This statement is said to be true because every value of x gives a different value of y and as such we can say it maps different elements to different images.

A function can only be represented by a straight line on the coordinate plane.  This statement is false because a function can also be represented by a circle, ellipse, parabola, etc.

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The height of a trapezoid  is 3cm

The formula for the area of a trapezoid is:

A = 1/2(base1 + base2)  × height

Where base1 and base2 are the lengths of the parallel sides of the trapezoid, and height is the distance between the bases.

That is:

A = 1/2(a+b)h

To  determine the height of a trapezoid using the formula substituting the given values and solve for h. That is:

A = 1/2(a+b)h

where A = 24 cubic centimeters, a = 9 cm and b = 7cm

24 = 1/2(9+7)h

24 = 1/2(16)h

24 = 8h

8h = 24

h = 24/8

h = 3 cm

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Answer:

20/C=X

Step-by-step explanation:

C= swim caps

X=How many swim caps each swimmer gets

The probability of picking a green marble is 3/4 or 0.75. This means it is likely the event would occur. Therefore, option A is the correct answer.

Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.

We know that, probability of an event = Number of favourable outcomes/Total number of outcomes

Given that, an experiment with a bag of marbles, P(green)=3/4.

Probability is used to determine how likely it is that a random event would happen. The probability that a random event occurs lie between 0 and 1.  The more likely the event is to happen, the closer the probability value would be to 1. The less likely it is for the event not to happen, the closer the probability value would be to zero.

The probability of picking a green marble is 3/4 or 0.75. 0.75 is more than 0.5. This means it is likely the event would occur.

Therefore, option A is the correct answer.

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To find the total cost of the pole at the store including sales tax, we need to multiply the price of the pole by the sales tax rate (expressed as a decimal).

$59.50 x 0.06 = $3.57

So the total cost of the pole at the store is $59.50 + $3.57 = $63.07.

To find the difference in price between the store and the website, we can subtract the website price from the store price:

$63.07 - $62.50 = $0.57

So the pole is $0.57 more expensive at the store than on the website.

Answer:1

Step-by-step explanation:

0

The approximate percentage of total pay that fringe benefits make up is 10%

The term called percentage in math is defined as a number or ratio that can be expressed as a fraction of 100

Here we have to find the approximate percentage of total pay that fringe benefits make up.

As the total compensation offered to the workers or employees by employers in different countries can usually be bifurcated into two broad components.

Here we have to know that the first one is based on wages & salaries components and the second one is the fringe benefits component.

Here this one includes the benefits components usually consist of supplementary benefits such as gratuity, pension contribution, transportation service, accommodation facility, etc.

Here as per the report published by the Bureau of Labor Statistics, U.S. Department of Labor in 2020 said that the approximate of the total pay that the fringe benefits make up usually range from 26.1% - 37.3%.

Based on that the percentage of fringe benefits could vary from the type of industry such as the goods-producing industry or service-providing industry.

So, the increased percentage is calculated as

=> 37.3 - 26.1

=> 11.2

Therefore, the correct option is (b).

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If the GCF of a term and 12x²y is 4xy , then (a) The term is 8xy , The expression is 4xy(2 + 3x) .

The Greatest Common Factor of the two terms is 4xy ,

where , the first term is 12x²y , we have to find the second  term ,

Consider Option(a) : where the second term is 8xy ,

So , GCF of 8xy and 12x²y is

= 2(4xy) and  3x(4xy)

= 4xy(2 + 3x )      ....taking 4xy common from both the terms ,

Therefore , Yes , the second term is 8xy and the expression is 4xy(2+3x) .

The given question is incomplete , the complete question is

What term and 12x²y have a GCF of 4xy? Write an expression that shows the monomial factored out of the polynomial , choose the correct answer below :

(a) The term is 8xy , The expression is 4xy(2 + 3x)

(b) The term is 16xy , The expression is 4xy(4xy + 3x)

(c) The term is 3x , The expression is 12x²y(3x + 4xy)

(d) The term is 4x²y , the expression is 4xy(1 + 3x) .

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Answer:

1:12, then 1 :11

wait unless its like in the same thing

wait sorry im confused

if its that then i think it would be 2:12

Step-by-step explanation:

sorry not too sure!!!

A customer would  be charged $ 52 for an international phone call that started at 9:35 p.m. and ended at 11:15 p.m. the same day.

Charge for first 5 charged = $ 4.50

Charge for additional time = $ 0.50 per minute

Starting time = 9:35 p.m.

End time = 11:15 p.m.

Total minutes = 100 minutes

Total charge = 4.50 + (95 x 0.50)

                  = 4.50 + 47.50

                  = 52.00

Hence, a customer would  be charged $ 52 for an international phone call that started at 9:35 p.m. and ended at 11:15 p.m. the same day i.e. for 100 minutes.

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After 11 years, the amount (future value) in Zahra's account will be $58 more than the amount in Christopher's.

The future value can be determined by using the FV table or formula.

We can also ascertain the future value using an online finance calculator as follows:

N (# of periods) = 11 years

I/Y (Interest per year) = 8.625%

PV (Present Value) = $8,800

PMT (Periodic Payment) = $0

Results:

Future Value (FV) = $21,863.03

Total Interest = $13,063.03

N (# of periods) = 4015 days (11 years x 365)

I/Y (Interest per year) = 8.25%

PV (Present Value) = $8,800

PMT (Periodic Payment) = $0

Results:

Future Value (FV) = $21,805.22

Total Interest = $13,005.22

Zahra's = $21,863.03

Christopher's = $21,805.22

Difference = $57.81 ($21,863.03 - $21,805.22)

Thus, with a slightly higher interest rate, Zahra's account will generate $58 more in future value than Christopher's investment.

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Answer:

EG = 44

Step-by-step explanation:

EG, the whole thing, is 10x - 16. It says that at the top of the image. But also, under the segment, we can put together two small pieces, EF and FG. So, the whole thing could also be 4x + 20.

The two expressions both describe EG. They are equal to each other. Write an equation.

10x - 16 = 4x + 20

subtract 4x

6x - 16 = 20

add 16

6x = 36

divide by 6

x = 6

They are asking for EG. Use either expression.

EG = 4x + 20

= 4(6) + 20

= 24 + 20

= 44

or,

EG = 10x - 16

= 10(6) - 16

= 60 - 16

= 44

Actually, its a neat check to do both ways bc it should come out the same.

EG = 44

It would take 2 hours for this space shuttle to travel 7. 2 x 108 miles

As per the given data, a certain space shuttle travels at a speed of 3. 6 x

104 miles per hour.

Here we have to determine that how many hours would it take this space shuttle to travel 7. 2 x 108 miles.

The relation between the speed and the distance is:

Speed = Distance × Time

Speed = 3. 6 x 104 miles per hour

Time = 1 hour

3. 6 x 104 = Distance × 1

Distance = 374.4 miles

The distance to be covered 7. 2 x 108 miles

= 777.6 miles

Hours taken to travel 7. 2 x 108 miles.

Time =  [tex]\frac{777.6 }{374.4}[/tex]

≅ 2 hours.

Therefore the time taken to travel 7. 2 x 108 miles is 2 hours.

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Answer: The graph of g(x) = 4x - 6 is a translation of the graph of f(x) = 4x - 3.

A translation of a function results in a shift of the graph of the function, either horizontally (left or right) or vertically (up or down).

When the graph of a function is shifted down, the y-coordinates of all the points on the graph decrease. When it's shifted to the left, the x-coordinates of all the points on the graph decrease.

In this case, the graph of g(x) = 4x - 6 is a vertical translation of 3 units down from the graph of f(x) = 4x - 3.

The y-coordinates of all the points on the graph of g(x) = 4x - 6 are 3 units less than the y-coordinates of the corresponding points on the graph of f(x) = 4x - 3.

Therefore, the correct answer is:

Translation of 3 units down.

Step-by-step explanation:

Answer:

a.  f+g = -3x+5 + x^2

b.  f-g =  -3x+5 - x^2

Step-by-step explanation:

g(x) = x^2

I'll assume the other two equations were meant to be:

f(x) = -3x+5, and h(x) = -4x-2

a.  f+g = -3x+5 + x^2

b.  f-g =  -3x+5 - x^2

The ratio of the volume of the cone to the volume of a prism is equal to one.

Three-dimensional space is quantified by volume. It is frequently measured quantitatively with SI-derived units (such the cubic metre and litre) or with a variety of imperial or US-standard units (such as the gallon, quart, cubic inch). Volume and height are related in how they are defined (cubed). The volume of a container is typically thought of as its capacity, or the amount of fluid (gas or liquid) that it could hold, as opposed to the amount of space the container occupies. Utilizing naturally occurring containers of a comparable shape and subsequently, standardized containers, volume is measured. Arithmetic formulas make it simple to determine the volume of some basic three-dimensional shapes.

We know that

The volume of the cone = area of the base. height/3

The volume of Prism = area of the base. height

Since the area of the base and height are the same hence the volume will also be . so the ratio will be 1.

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Answer:

x = 3

Step-by-step explanation:

x+5=8

x+5-5=8-5

X=3

Answer:

x = 3

Step-by-step explanation:

basically 2 ways

1st: Transposing

1) x + 5 = 8

2) transpose or transfer +5 to the other side

NOTE: transposing numbers and variables switches the signs (positive -> negative and vice versa)

3) x = 8 - 5

x = 3

2nd: Property of Equality (whatever u do one one side, you do the same to the other)

1) x + 5 = 8

2) x + 5 - 5 = 8 - 5

x = 3

the main focus is to isolate x, or to make it be alone in one side of the equation

The equation of a secant line given two points (a, b) and (c, d) is y - b = [(d - b)/(c - a)] (x - a).

The Latin word secant, which means to cut, is used in mathematics to define a line that passes through the points P and Q of any arbitrary curve whose equation is y=f(x).

Slope is the term used to describe when one end or side of a surface is higher than the other. A Secant line is a straight line that connects two points on a function. formula for secant line slope.

A secant line's slope through two points is equal to y 2 y 1 x 2 x 1. On the secant line, locate two spots.Discover the line's slope between the two spots.To get the line's equation, enter one of your points and your slope into the point slope form of your line.

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The width of the given rectangular frame of perimeter of 52 inches is; 12 inches.

The formula for perimeter of rectangle is;

Perimeter = 2(Length + width)

Now, we have the parameters as;

Perimeter = 52 inches

Length = 14 inches

Thus, plugging in the relevant values into the perimeter equation gives;

52 = 2(14 + width)

52/2 = 14 + width

14 + width = 26

Width = 26 - 14 = 12 inches

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According to the diagram, there are eight fractions of 3/8 in three.

We are shown a diagram of three equal parts divided into eight equal parts.

Divide 3 by 8 to get the value of the equal part.

As a result, the value of each can be given as 3/8.

Therefore There are 8 groups of 3/8 in 3 as per the given diagram.

The diagram is attached below:

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These are functions that almost have to be memorized but can be understood through Desmos for example:

a: W

b: Z

c: X

d: Y

e: V

The length of the third side of the triangle is x + 13.

A triangle is simply a two-dimensional polygon with 3 sides and 3 interior angles.

The perimeter of a triangle is the sum of the length of all three sides of the triangle.

Given the data in the question;

To find side C, equate the sum of all three sides of the triangle to the perimeter and simplify.

Side A + Side B + Side C = P

5x + ( 3x - 7 ) + Side C = 9x + 6

5x + 3x - 7 + Side C = 9x + 6

8x - 7 + Side C = 9x + 6

Side C = 9x + 6 - ( 8x - 7 )

Side C = 9x + 6 - 8x + 7

Side C = x + 13

Therefore, side C is x + 13.

Option A) x + 13 is the correct answer.

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Answer:

x + 13

Step-by-step explanation:

i took the test xx