Mathematics High School

I WILL AWARD BRAINLIEST!! PLEASE HELP!!


Given: AC = AB, CD = DE

m∠ABC = 70°, m∠ ECB = 35°


Prove: DE ║BC



m∠ACB = m∠______, By reason ( Base angles theorem, Exterior Angle theorem, Supplementary angles, Vertical Angles theorem ) - choose one

Answers

Answer 1

Answer:

a)[tex]\angle ACB = \angle ABC[/tex] By Base angle theorem

b)DE||BC since[tex]\angle DEC=\angle ECB[/tex] and they are alternate interior angles

Step-by-step explanation:

Given: AC = AB, CD = DE

∠ABC = 70°, m∠ ECB = 35°

Refer the attached figure

AB = AC

So, By Base angle theorem : if the sides of a triangle are congruent then the angles opposite these sides are congruent.

So, [tex]\angle ACB = \angle ABC[/tex]

So,[tex]\angle ACB = \angle ABC =70^{\circ[/tex]      ----1

CD = DE

So, by Base theorem

[tex]\angle DCE = \angle DEC[/tex]

Let [tex]\angle DCE[/tex]  be x

So,[tex]\angle DCE = \angle DEC[/tex]

[tex]\angle ACB= \angle DCE+\angle ECB = x+35[/tex]

Using 1

70 = x+35

35=x

[tex]\angle DCE = \angle DEC =35^{\circ}[/tex]

Now[tex]\angle DEC=\angle ECB=35^{\circ}[/tex]

So, DE||BC since[tex]\angle DEC=\angle ECB[/tex] and they are alternate interior angles

I WILL AWARD BRAINLIEST!! PLEASE HELP!!Given: AC = AB, CD = DEmABC = 70, M ECB = 35 Prove: DE BC MACB

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Answer:

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Hello!!! Princess Sakura here ^^

Step-by-step explanation:

So first we will do 180-152 to get the measure of the angle besides the angle. That'll give us 28, then we know that those base angles of this mini triangle are congruent so we will do 28+28 to get 56. Now we will do 180-56 to get the last angle of the triangle, which is 124. And this angle is the same as the angle with x because they are corresponding angles so x is 124°.

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Answers

Answer:

Fraction is 189/1000

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Answers

Answer:

6 gallons

Step-by-step explanation:

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2) then add 34 and 14 to get 48

3) then divide 48 by 8 to get 6

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is-2 a solution of the inequality -2x+5__> 9 ?

Answers

Answer:

Yes

Step-by-step explanation:

-2 plugged into x would give you 4 then 4 + 5 is 9

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Answers

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Step-by-step explanation:

Savannah loves to talk on her cell phone. She has $100 in her budget to pay this month’s cell phone bill. Her cell phone plan is $20 per month plus $0.10 per minute of usage. If x represents the minutes of usage, which equation best represents the word problem?
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Answers

Answer: C. best fits the word problem.

Step-by-step explanation:

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Answers

you’re mommmmmmmmmmmmmmmmmm

Answer:

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Step-by-step explanation:

first, wright out a ratio with what's given

20(teachers):705(students)

next, simplify the ratio by dividing both sides by the gcf

20: 705

20/5 : 705/5

4 : 141

the soccer team is selling bags of popcorn

Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

Answer:

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Step-by-step explanation:

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If you don't understand, count the "0's" and times then by 1 and 0's.

An airline tracks the time an airplane is parked unloading and loading passengers. The line plot displays the amount of time a number of airplanes were parked on one day. If the total amount of time were divided equally among all the airplanes, how long would each airplane have been parked? Amount of Time Planes are Parked A. B. C. D.

Answers

I think it is C not sure or it’s A

Answer:

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Step-by-step explanation:

Plz help quick this is due in 10 mins! Are they right? Questions are below!

Answers

Answer:

the first question is right the next about the sea level i think would be 7.92 then the last would be the value of x should be greater than or equal to -5

Step-by-step explanation:

TIME REMAINING
01:45:37
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I think the best answer would be so

Answer:

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Step-by-step explanation:

Took the test on Edge

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Answer:

27

Step-by-step explanation:

substitute the given value into the function and evaluate

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Answer:

a

Step-by-step explanation:

m*m= m^2

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Answer:

a

Step-by-step explanation:

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Dovecreek Manufacturing has two facilities that manufacture tents. Each facility produces both the Expedition tent and the
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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

324 calories

Step-by-step explanation:

A box of cereal states that there are 81 cal in a 3/4 cup serving what is the unit rate for calories per cup how many calories are there in 3 cups of cereal

The unit rate for calories per cup = calories per cup

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3/4 × x = 81 × 3

x = (81 × 3) ÷ 3/4

x = 243 × 4/3

x = 324 calories per cup

There are 324 calories in 3 cups of cereal

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geometric?
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Answers

Answer:

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Answer:

No

Step-by-step explanation:

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Answers

Answer:

D.

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Answers

Answer: equals 17

Step-by-step explanation:

Answer:

The answer is = for 17 and |17|

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Answers

Answer:

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Step-by-step explanation:

(2x-6) + 4(x-3)

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6x-18

Answer:

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Step-by-step explanation:

Find the values of​ x, y, and z in the triangle to the right. A triangle has angles labeled as follows: lower left, x degrees; top, y degrees; lower right, z degrees. A ray extends the left side of the triangle and the angles labeled y degrees and (3 x plus 5) degrees form a straight angle. Another ray extends the bottom side of the triangle and the angles labeled z degrees and (3 x minus 5) degrees form a straight angle. X degrees y degrees z degrees left parenthesis 3 x plus 5 right parenthesis degrees left parenthesis 3 x minus 5 right parenthesis degrees

Answers

Given:

Consider the below figure attached with this question.

Angles of a triangle are x, y and z.

To find:

The values of x, y and z.

Solution:

If two angles are linear pair, then their sum is 180 degrees.

[tex]y+(3x+5)=180[/tex]

[tex]y=180-3x-5[/tex]

[tex]y=175-3x[/tex]

Similarly,

[tex]z+(3x-5)=180[/tex]

[tex]z=180-3x+5[/tex]

[tex]z=185-3x[/tex]

According the the angle sum property, the sum of all angles of a triangle is 180 degrees.

[tex]x+y+z=180[/tex]

[tex]x+(175-3x)+(185-3x)=180[/tex]

[tex]-5x+360=180[/tex]

[tex]-5x=180-360[/tex]

[tex]-5x=-180[/tex]

Divide both sides by -5.

[tex]x=36[/tex]

The value of x is 36.

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[tex]y=175-(108)[/tex]

[tex]y=67[/tex]

Now,

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[tex]z=185-108[/tex]

[tex]z=77[/tex]

Therefore, the values of x, y and z are 36, 67 and 77 respectively.

I OFFER 100 POINTS AND WHOEVER ANSWERS FIRST WILL BE BRAINLIEST

(SHOW WORK IF YOU CAN PLZ)

For f(X)=1/x-5 and g(X) =x^2+2, find f(g(x)) and (g o f)(6)

Answers

F(g(x))= f(x^2 +2)=
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Which expression uses the associative property to make it
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D.3(1/6•7/5)

Answers

Answer:b

Step-by-step explanation:

The associative property for the expression is  (6 • 1/3)7/5.

What are the Properties of Multiplication?

Certain rules that are used while multiplying numbers are known as the characteristics of multiplication. All types of mathematical expressions, whether they be algebraic expressions, fractions, or integers, can be solved thanks to these features, which make it simple to simplify expressions.

Given expression 6(1/3 • 7/5),

to write its associative property

The Associative Property of Multiplication states that altering the way the numbers are grouped has no impact on the result of the multiplication.

a(b . c) = (a . b)c

6(1/3 • 7/5) =  (6 • 1/3)7/5

Hence correct expression for the property is option B,  (6 • 1/3)7/5.

Learn more about the Properties of Multiplication;

https://brainly.com/question/386524

#SPJ5

Gabriella bought 6 7/14 yards
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buy in all?

Answers

Answer:

13 9/14

Step-by-step explanation:

Add the blue + red fabric

1. Make the denominator the same

6 7/14 + 7 2/14

2. Add

6 7/14 + 7 2/14 = 13 9/14

Answer:

13 9/14

Step-by-step explanation: You would change 1/7 into 2/14 for a common denominator then add 2/14 and 7/14 and get 9/14 and 6+7=13 so it would be 13 9/14. Plzzzz give me brainliest

PLS help!!!! I am super confused and I have a test soon.

Answers

Question 2 - I think it’s the Alternate Interior Angles are Congruent (unsure)

Question 4 - Yes by AA (pretty confident)

a car decelerated from zero 40 mph to 0 mph what is the deceleration of thecar?

Answers

Answer:

40

Step-by-step explanation:

Deceleration means how much did it go down? It makes sense that 40 is correct! Let me know if I'm wrong.

Helen has two more than twice the number of Gail's pokemon cards. If you increase the number of Gail's pokemon cards by 10, she will have the same number of pokemon cards as Helen has. How many pokemon cards does Gail have?

Answers

Answer:

Gail will have 8 cards before adding those 10, 18 if she added those 10.

Step-by-step explanation:

When Gail has 8 cards then Helen would have 18 cards, whicj is twice more than double that of Gail's.

Answer:over 10

Step-by-step explanation:

Get sticke bugged lol

3x-2y=10 solve for y

Answers

Answer:

y =  3 /2 x − 5

Step-by-step explanation:

It's hard to write out an explanation for this one but you could also plug it into an algebra calculator to check mine and your answer :))

What is the scale of a map if 1 cm on a map represents 20 km in real life?

Answers

Answer:

1cm: 20km

Step-by-step explanation:

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