Mathematics High School

39.- En la siguiente figura calcula el valor de "x" y "y".
Ав" CD
6o°
Az
18x-2y
9x+y
A) X = 5, y = 15
B) x = 15, y = 5
C) x = 30, y = 60
D) x = 60, y = 30​

Answers

Answer 1

Answer:

A) X = 5, y = 15

Step-by-step explanation:

De la figura:

∠EHD = ∠EGB (los ángulos correspondientes son iguales). Por lo tanto;

18x-2y = 60 (1)

Además, ∠CHF = ∠EHD (los ángulos opuestos serticales son iguales). Por eso;

18x-2y = 9x + y

18x-9x-2y-y = 0

9x-3y = 0 (2)

Para resolver x e y, resolvemos la ecuación (1) y (2) simultáneamente.

Multiplique la ecuación (2) por 2 y reste de la ecuación (1):

4 años = 60

y = 15

Pon y = 15 en la ecuación (2):

9x-3 (15) = 0

9x-45 = 0

9x = 45

x = 5

39.- En La Siguiente Figura Calcula El Valor De "x" Y "y"." CD6oAz18x-2y9x+yA) X = 5, Y = 15B) X = 15,

Related Questions

A 300 long wire is used to fence a rectangular plot whose length is twice its width find the length and breath

Answers

Answer:

Length = 100

Width = 50

Step-by-step explanation:

Given :

Length = 2 * width

If :

length = l

Width, w

l = 2w

Perimeter, P of rectangle :

P = 2(l + w)

P = 2(2w + w)

300 = 2(3w)

300 = 6w

w = 300/6

w = 50

l = 2w

l = 2(50)

l = 100

the perimeter of a semicircle is 108 cm what is the perimeter of the square drawn on the diameter of the semicircle ​

Answers

Answer:

Step-by-step explanation:

the perimeter of the semi-circle would be the diameter plus the circumference of half of the circle.  

They want to know the perimeter of a square using the diameter of the sem-circle as ONE side, so the perimeter of the square would be 4 times the ONE side.

We should recall:

diameter = 2 times the radius     circumference of a cirlce = 2π r

How do we find the diameter of the of the semi circle?

The perimeter of the semi circle is given as 108 cm

Perimeter of the semicirle =    2r + π r         diameter plus semi circumference

                                  108   =   r ( 2 + π)           factor out the r and solve for r

                     108 / (2 + π)   =   r                       divide both sides by ( 2 + r)

Now we know r, the perimeter of the squqre is 4 times 2r  or  8r

           perimeter of square = 8  [ 108 / (2 + π) ]               π  I used 3.14

                                             =  864 / 5.14

                                             =   168.1 cm       I got rounded to nearest tenth    

When I re-checked by work I found a few math,  logic and calculation errors.  Please re-check my answer for any more mistakes.

       

0⁴= please helppppppp​

Answers

Answer:

0

Step-by-step explanation:

Answer:

the correct answer is 0

Step-by-step explanation:

2v+7=3 what do v eqaul

Answers

Answer:

v= -2

Step-by-step explanation:

subtract 7 from both sides and then divide by 2

Help me please! (easy question) and (15 points) Brainliest if right!!!

Answers

Answer:

D. y = -1/2x + 18.5

Step-by-step explanation:

First you want to find the slope of the line that these coordinates make. To do this, use the slope formula: (y₂ - y₁) / (x₂ - x₁). I will use the first and last points.

(1, 18) & (6, 15.5)

Plug in these values:

(15.5 - 18) / (6 - 1)

Simplify the parentheses.

= (-2.5) / (5)

Simplify the fraction.

-2.5/5

= -1/2

This is your slope.

Now plug this into the standard slope-intercept equation: y = mx + b

y = -1/2x + b

b is the y-intercept, or the value of y when x = 0.

To find b, we want to plug in a value that we know is on this line: in this case, it is (1, 18). Plug in the x and y values into the x and y of the standard equation.

18 = -1/2(1) + b

To find b, multiply the slope and the input of x (1)

18 = -1/2 + b

Now, add 1/2 to both sides to isolate b.

18.5 = b

Plug this into your standard equation.

y = -1/2x + 18.5

This is your equation.

Hope this helps!

Use the converse of the side-splitter theorem to determine if T R is parallel to R S. Which statement is true? Line segment TU is parallel to line segment RS because StartFraction 32 Over 36 EndFraction = StartFraction 40 Over 45 EndFraction. Line segment TU is not parallel to line segment RS because StartFraction 32 Over 36 EndFraction not-equals StartFraction 40 Over 45 EndFraction. Line segment TU is parallel to line segment RS because StartFraction 32 Over 45 EndFraction = StartFraction 40 Over 36 EndFraction. Line segment TU is not parallel to line segment RS because StartFraction 32 Over 45 EndFraction not-equals StartFraction 40 Over 36 EndFraction.

Answers

Line segment TU is parallel to line segment RS because 32/36 = 40/45.

What is side splitter theorem?

According to the "Side Splitter" Theorem, a line that crosses two sides of a triangle and runs parallel to its third side proportionally divides those two sides.

A line will divide two sides of a triangle proportionally if it runs parallel to one of the sides and intersects the other two.

Given

It is evident from the presented figure that QT=32, TR=36, QU=40, and US=45.

The opposite of the side splitter theorem asserts that a line is parallel to a third side if it divides two sides proportionally.

TU separates the two sides by a factor of in

QT/TR = 32/36 = 8/9

QU/US = 40/45 = 8/9

QT/TR = QU/US

It implies that the line TU divides the two sides equally.

Line segment TU is parallel to line segment RS using the reverse of the side splitter theorem because

32/36 = 40/45

Hence option 1 is correct.

Learn more about side splitter theorem;

https://brainly.com/question/30105519

#SPJ5

The complete Question is,

Choose the equation of the line that is parallel to the y-axis.
x=-2, x+y=0, x=y, y=2

Answers

Answer:

x = -2 is the answer. Brainly requires a 20 character answer for some reason so im writing this

Answer:

x = - 2

Step-by-step explanation:

A line parallel to the y- axis is a vertical line with equation x = c

c is the value of the x- coordinates the line passes through.

The only equation in this form is

x = - 2

If the hotdog stand wants to make a profit of about $200 to pay their bills, how much do they need to charge per hotdog?

Answers

Answer:

it doesn't show how much they sold for it to be $200

Help!!! Assignment due in 20 minutes!!

Answers

Answer:

2

Step-by-step explanation:

The answer would be 2 because it reduces to the same system of equations as the original, which I knew since the first equation was the same and if you divide everything in the second by 2, you'll get 3x-y=8. :)

Help please thanks so much

Answers

Answer:

C 4/5

Step-by-step explanation:

can someone help?.............

Answers

Answer:

Step-by-step explanation:

The sum of the three interior angles of a triangle is always 180.

Knowing this, we can set up an equation for the given angles:

[tex]8x + 10x + 12x = 180[/tex]

[tex]30x = 180[/tex]

[tex]x = 6[/tex]

Knowing this, we can now plug it into the angles:

[tex]8x[/tex]

[tex]8 * 6[/tex]

[tex]48[/tex]

[tex]10x[/tex]

[tex]10 * 6[/tex]

[tex]60[/tex]

[tex]12x[/tex]

[tex]12 * 6[/tex]

[tex]72[/tex]

Laura wants to cover a box with fabric.
• The box is in the shape of a rectangular prism.
• It measures 15 in. long, 11 in. wide, and 24 in. tall.
What is the total surface area of the exterior of the box that Laura will cover

Answers

Answer:

1968 in

Step-by-step explanation:

times the width and height, then times the answer by 2.

times the length and height, then times the answer by 4.

add both answers

you get 1968in

Answer:

hey so the answer is 1,578 inches square

Step-by-step explanation:

.

In ΔTUV, the measure of ∠V=90°, TU = 24 feet, and VT = 15 feet. Find the measure of ∠U to the nearest degree.

Answers

Answer:

39

Step-by-step explanation:

Answer:

39

Step-by-step explanation:

sinU=opp/hyp= 15/24

sinU=15/24

U=sin^-1(15/24)

U=38.682=39

if 6x+4=20-2x, then 8x=?

Answers

Answer:

8x = 16    x=2

Step-by-step explanation:

Answer: Simplifying

8x = 0

Solving

8x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '8'.

x = 0

Simplifying

x = 0

Step-by-step explanation:

Bob wants to buy a television that costs $600, including taxes. To pay for the television, he will use a payment plan that requires her to make a down payment of $240, and then pay $68.50 each month for 6 months. What is the percent increase from the original cost of the television to the cost of the television using the payment plan?

Answers

Answer:

108.5% increase

Explanation:

Find how much payments will cost for 6 months

68.50 × 6 = 411

Add payments to down payment

411 + 240 = 651

Compare:

600 vs 651

Solve for percent increase:

651 ÷ 600 = 1.085

Convert decimal into percentage:

1.085 × 100% = 108.5%

3x 2+ 4x - 20
using grouping or an area model.

Answers

Answer:

Is the 3x a power of 2, once I get that info I'll edit my answer

Step-by-step explanation:

Find the missing side i the problem using special right triangle. Can you help me

Answers

Answer:

x = 13.86

y = 6.93

Step-by-step explanation:

tan 30° = y/12

0.5774 = y/12

y = 12(0.5774) = 6.93

cos 30° = 12/x

0.8660 = 12/x

x = 13.86

46x= -23
Solve please

Answers

Answer:

73urur

Step-by-step explanation:

ndndndnfnnfnfjgjfjf

Answer:

-0.5

Step-by-step explanation:

x=-23÷46

x=-0.5

that's the answer :)

x=y-1
y=4-2x
solve by using the substitution method. pls explain how you did it too pls

Answers

it would be (1,2)

x=1 and y=2

find the 10th term of 3, 9 /2​ , 27/4

Answers

Answer:

Step-by-step explanation:

the nth term of a geometric sequence is

∙

x

a

n

=

a

r

n

−

1

where a is the first term and r the common ratio

r

=

a

2

a

1

=

a

3

a

2

=

...

...

=

a

n

a

n

−

1

here  

a

=

3

and  

r

=

9

3

=

27

9

=

3

 

⇒

a

10

=

3

×

3

9

=

3

10

=

59049

Will give brainiest to correct answer


3. BestBuy is offering 30% off all items. If x is the original purchase prices, select
ALL of the expressions which represent the final price with the discount
B. 0.7x
A 13x
C. X
D. X -0.3x
EX+ 0.3%

Answers

Answer:

B and D

Step-by-step explanation:

simple math :)

Answer:

B and D

Step-by-step explanation:

Just took the test

Please follow me

find the volume of the cylinder​

Answers

Answer:

hope help you stay happy and safe

Help me with this please!!

Answers

Answer:the 3 one

Step-by-step explanation:

This looks to be a Ray. Which is a type of line with one end point on one side, when continuing on forever on the other.

From the options given, I’m guessing it is the third option if it is asking to identify the shape? But your questions asks the name of the line, which is a ray.

What is the area Of This Shape? Please Sumbody Help

Answers

Answer:

i think its 102

Step-by-step explanation:

One angle of an isosceles triangle measures 130°. Which other angles could be in that isosceles triangle? Choose all that apply

50, 45, 130, 25

Answers

So triangles have a sum of 180° and in an isosceles triangle, two of the angles are equal. If we have one angle that measures 130°, the other two have to add up to 50°. Since the two are equal, the only answer can be 25°!

need help with 5 6 7 and 8. at least answer one of them .

Answers

Answer:

5) moves one place to right

6) moves one place to left

Step-by-step explanation:

Your neighbor burns 150 Calories in 15 minutes cross-country skiing.
There is a proportional relationship between Calories burned and time.
Find the unit rate.

1. Unit rate 5 cal per minute 2. unit rate 12 cal per minute 3. unit rate 10 cal per minute 4. unit rate 100 cal per minute

Answers

The unit rate is 10 cal per minute.

150/15 = 10

I need help again I’m pretty stuck

Answers

Answer:

1: 45

3: 45

4: 135

5: 103

6: 77

8: 77

9: 135

10: 45

11: 135

12: 45

13: 77

14: 103

15: 77

16: 103

Step-by-step explanation:

In a class of 18 students, 5 have a brother and 11 have a sister. There are 5 students who do not have any siblings. What is the probability that a student has a sister given that they do not have a brother?

Answers

I think the images should make sense. If not, just comment, I’ll be here. (It’s only letting me insert one image so I’ll have to exp this part) once you’ve filled the two way table in, you circle the two squares that Apple to the situation. In this case, which ones don’t have a brother? The top right and bottom right fit that bill. Then you divide the number of students that actually have a sister but the two squares (added together) that do t have a brother. So it’d be 5/10 which is .5 for an answer

HELP!
If the radius of the large pizza is 8 inches, what is its area in square inches?

Answers

Answer:

about 200 square inches

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