Mathematics High School

in this figure prove that cd//ef​

In This Figure Prove That Cd//ef

Answers

Answer 1

Answer:

1) 36 + 50 = 86 : Addition property of equality

2) m<D = m<ADB : If two angles have the same measure, then they are equal.

3) <D congruent to <ADB : if two angle are equal, then they are congruent.

4) <D, <ADB are alternate interior angles: assumed from diagram

5) CD // AB : if alternate interior angles are congruent, then the 2 lines cut by a transversal are //.

6) 130 + 50 = 180 : addition property of equality

7) m<E, m<BAE are supplements : if the sum of two angles equal to 180, then they are supplements.

8) <E, <BAE are same-side interior angles : assumed from diagram

9) EF // AB : if same-side interior angles are supplements, then the 2 lines cut by a transversal are //.

10) CD // EF : if two lines are // to the same line, then they are //.

im pretty sure this is the proof

Related Questions

Write 51/7 in radical form

Answers

7 2/7 I think not sure

Write the decimal 0.532 as a percent.

a. 53.2%
b. 532%
C. 5.32%
d. 0.532%

Answers

I believe it would be a.53.2%
The answer would be 53.2% because 1.0 is 100%

What is the value of a?

Answers

Answer:

relationship between hypotenuse and perpendicular is given by sin angle

sin60=p/h

√3/2=a/16

√3/2×16=a

8√3=a

option C is your answer

solve the following equation in substitution method: y=x-2 and x+y=4​

Answers

Answer:

Step-by-step explanation:

y=x-2

x+(x-2)=4

2x-2=4

2x=6

x=3

please help i will give brainly

Answers

Answer:

Step-by-step explanation:

Lo lamento no se la respuesta espero que la

encuentres

Answer:

1. $9.86

2. $531.51

3. $49.81

4. $6.03

5. $25.13

Step-by-step explanation:

1. 15% of 65.75 = 9.8625 about 9.86 (asks only for the amount for the tip)

2. 18% of 450.50 = 81.01

450.50 + 81.01 = $531.51(Asks for total; the price of the food including tip).

3. 25% of 39.85 = 9.9625

39.85 + 9.9625 = 49.8125 about 49.81 (asks for total; the price of the food including tip).

4. 12% of 50.25 = 6.03 (Asks only for the amount of the tip)

5. 20% of 125.67 = 25.13400 about 25.13 (Only asks the amount of the tip)

Ace Carlos

I’m helpless please help me

Answers

Answer: I think the last one sorry of I am wrong

Step-by-step explanation:

A soccer ball is kicked at a velocity of 25 meters per second. The following table shows the horizontal distance (in meters) at different angles of elevation (in degrees), ignoring wind resistance.

Angle of Elevation Distance Traveled
15 31.9
25 48.8
30 55.5
45 63.8
50 62.8
55 59.9
60 55.5
70 41.0
Using a quadratic regression calculator, determine the values of a, b, and c that can be used to write a quadratic function that provides a reasonable fit to the set of data. What is the value of c?

A). 8.5411
B). -8.5411
C). 85.411
D). -85.411

Answers

The answer is D hope this helps your very welcome

Answer:

-8.5411

Step-by-step explanation:

I just did this with the desmos calculator !

Averigua: Cuantos habitantes tiene tu localidad y cuantos tu provincia Calcula A qué porcentaje de la población del Ecuador con responder xf 13 puntos y responden esta pregunta porfa ❤❤❤❤❤❤❤✨​

Answers

Answer:

La Provincia del Guayas comprime el 25.1% de la población de Ecuador. A su vez, la Ciudad de Guayaquil tiene una población igual al 15.58% de la población ecuatoriana.

Step-by-step explanation:

Dado que vivo en la Provincia del Guayas, y en la ciudad de Guayaquil, los datos de población solicitados son los siguientes:

-Provincia del Guayas: 4.387.434 habitantes, es decir, un 25.1% del total de la población de Ecuador, que es de 17.475.570 habitantes, conforme surge del siguiente calculo:

17.475.570 = 100

4.387.434 = X

4.387.434 x 100 / 17.475.570 = X

438.743.400 / 17.475.570 = X

25,10 = X

-Ciudad de Guayaquil: 2.723.665 habitantes, es decir, un 15.58% del total de la población de Ecuador, conforme surge del siguiente cálculo:

17.475.570 = 100

2.723.665 = X

2.723.665 x 100 / 17.475.570 = X

272.366.500 / 17.475.570 = X

15.58 = X

5x + 7 = 2x - 8 can anyone say how to solve please ​

Answers

Answer:

x = - 5

Step-by-step explanation:

Given

5x + 7 = 2x - 8 ( subtract 2x from both sides )

3x + 7 = - 8 ( subtract 7 from both sides )

3x = - 15 ( divide both sides by 3 )

x = - 5

20 points
Are the first too correct?
And what would the last one be?

Answers

Answer:

a) cos

b) sin

c) tan maybe?

Step-by-step explanation:

Why is (a+b)(a-b) = a2-b2

Answers

Answer:

see explanation

Step-by-step explanation:

(a + b)(a - b)

Each term in the second factor is multiplied by each term in the first factor, that is

a(a - b) + b(a - b) ← distribute parenthesis

= a² - ab + ab - b² ← collect like terms

= a² - b²

This is a standard algebraic identity, called the difference of squares

ONLY GIVING BRAINLYEST IF YOU ANSWER QUICKLY AND CORRECTLY
Which expression is equal to 3x + (f + 6g)?

a
3xf + 6g

b
3x + 6fg

c
(3x + f) ⋅ 6g

d
(3x + f) + 6g

Answers

Answer:

This is the correct answer

Step-by-step explanation:

3x+f+6g

4 - Зc — 5c2
write the polynomial in standard form.

Answers

-5c^2-3c+4 This polynomial is in standard form, now, and the leading coefficient is 5, because it is the coefficient of the first term. Degree is 2, due to -5c^2.

Evaluate 8a+3b-10+c2 when a=2, b=5 and c=4​

Answers

Answer:

8(2)+3(5)-10+4(2)

16+15 -10+8

=31-10+8

=21+8=29

8a+3b-10+c2
8(2)+3(5)-10+4(2)
16+15-10+8
31-18
13

Find the perimeter of the figure.

Answers

Answer:

87

Step-by-step explanation:

So there are 5 numbers listed. You can obviously see the two small sides are 9. They are the same size. Then you have the three 9s on the top. This is important. So far we are at 75ft. The complication comes in at what is the unknown side. Well if you see the three 9s on top. Two are going horizontal along with the 30. So 9+9 is 18. 30-18 is 12. So that side is 12. Answer is 87.

Hope this helps

Is this a proportional graph?

Answers

yes that graph is a proportional graph

If Jake has 132 braincells, and Austin takes 131 away, how many does Jake have after getting three back and losing three.

Answers

Answer:

1

Step-by-step explanation:

132-131=1

1+3=4

4-3=1

poor jake.....

Answer:

isn't it 1

Step-by-step explanation:

coz 132 - 131 = 1

1 + 3 = 4

4 - 3 = 1

HEL ME PLEEAASSEE AMIGO PLEEAASSEE or amiga

Answers

Answer:

159 degrees

Step-by-step explanation:

A full semicircle (or half circle) has a degrees of 180. And x is equal that semicircle so x = 180, now if we subtract 21 from 180 we get 159, so X = 159.

Diego and Jada are both trying to write an expression with fewer terms that is equivalent to
7a + 5b - 3a + 4b

Jada thinks 10a - 1b is equivalent Diego thinks 4a + 9b is equivalent

Answers

Answer: Diego, 4a + 9b is equivalent

Step-by-step explanation:

7a + 5b - 3a + 4b

= (7a - 3a) + (5b + 4b)           We rerange the variables, and put them together with (), which make it more clear to solve.

= 4a + 9b

The length of a rectangle is 36
centmeters and the width is 9
centimeters. A similar rectangle has
a width of 3 centimeters.
what is
the length of the decond triangle?

Answers

Answer: 12cm

Step-by-step explanation:

They are similar, so we can set an equation of:

the ratio of length and width of the big triangle equal to the ratio of length and width of the small(second) triangle.

36:9 = x:3

36/9 = x/3

9x = 3(36)           by use the cross multiply

9x = 108

x = 12 cm

Please help.
Is algebra.

Answers

Answer:

7 acd 8 use mathpapa or desmos graphing calculator

Step-by-step explanation:

7 acd 8 use mathpapa or desmos graphing calculator

I need some questions for grade 8 for algebraic manipulation
The questions in which we need to put formulas and solve them

Answers

Answer:

x + y + z + 13 ÷ m has

A. one term

B. two term

C. three term

D. four term

-2x + 5 + 10x - 9

3(x + 7) + 2(-x + 4) + 5x

6+3x-5y+7x-6y+2

2x - 8 = -x + 4

Someone help ASAP:

Slope = 4 ; Point (-2,1)

Answers

Whats the q tho?? The formula for slope is y=mx+b M= slope b= Y intercept whatever you’re looking for hope this helped also slope= rise over run. Take 2 points and its y/x - y/x to find m

please help meeeeee

A line passes through the origin, (-1, 1), and (4, n). Find the value of n.
N =​

Answers

Answer:

-4

Step-by-step explanation:

find the slope:

[tex]\frac{1-0}{-1-0}= \frac{1}{-1} =-1[/tex]

substitute:

y= 4(-1)

y=-4

(4,-4)

Find the solutions of the quadratic equation 3x^2 – 2x +4= 0.

Answers

Answer:

C. x =(1±i√11)/3

Step-by-step explanation:

Use the quadratic formula to find the solutions.

(−b±√b²−4(ac))/2a

Substitute the values a=3, b=−2, and c=4 into the quadratic formula and solve for x.

2±√(−2)²−4⋅(3⋅4)2⋅3

Simplify.

x=(1±i√11)3

Gloria drew a trapezoid on a coordinate grid. She wants to use a transformation that will change the
size of the trapezoid but not the orientation. Which transformation should she use?
a. rotation
b. reflection
c. translation
d. dilation
Fa and c only
Gb and d only
Hd only
J None of the above

Answers

She should use None of the above
d. Dialation.

Dialations only make the shape larger or smaller. It does not change the general shape nor move the shape up/down/left/right.

At what rate has she been making deposits to her savings?

Answers

Answer:

20 dollars per month

Step-by-step explanation:

85 = 25 + x3

60 = x3

20 = x

Find the area of the composite shape below.
help to get sum coin

Answers

Answer:

Composite Area = 1105.94

Step-by-step explanation:

Remark

The two semi circles at each end make an entire circle with radius 11. The width of the central rectangle = the diameter of the circle. The area should be able to be found.

Width

2*radius = width

width = 2 * 11

width = 22

Area of the circle

Area = pi * r^2

r = 11

Area = 3.14 * 11^2

Area = 3.14 * 121

Area = 379.94

Area of the rectangle

Area = L * W

L = 33

W = 22

Area = 33 * 22

Area = 726

Total Area

Total Area = Area of Rectangle + Area of the Circle

Total Area = 726 + 379.94 = 1105.94

Does this triangle have a hypotenuse about 38 feet long

Answers

the hypotenuse is 37.9, so 38 would be the answer if rounded

A lap around a school track equals
of a mile. Caleb runs 4 laps on Monday and 6 laps on Wednesday.
How many more miles does Caleb need to run Thursday if he wants to run 6 miles total?

A. 1 1/2
B. 2 1/2
C. 3 1/2
D. 4 1/2

Answers

B if you need an explain I can do it
B because that is the answer boss
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