Mathematics Middle School

ΔABC is an isosceles triangle with AB = AC, D is the midpoint of BC and
AD is joined. Prove that ΔABD ≅ ΔACD.
I kinda have a problem with triangles and congruency....little help please ?

Answers

Answer 1

Step-by-step explanation:

Okay, so the triangle would look something like this:

see the image attached

Since AB=AC, which is given; <ABD = <ACD, because they are the angles opposite from the congruent sides of the isosceles triangle; and <ADB=<ADC, as AD is the bisector*; ΔABD ≅ ΔACD using SAA/AAS (side-angle-angle) congruencey.

*If the bisector of an angle in a triangle meets the opposite side at its midpoint, then the triangle is isosceles, and vice versa

(I haven't done Geometry in a while so I hope that's correct :) )

ABC Is An Isosceles Triangle With AB = AC, D Is The Midpoint Of BC AndAD Is Joined. Prove That ABD ACD.I

Related Questions

ill give brainiest to whom ever gets this correct

Answers

Answer:

C. 36.

Step-by-step explanation:

Answer:

36 in. i think

Step-by-step explanation:

HELP PLS 10 POINTS + BRAINLIST~!

A package of 8 pens costs $1.09. Milo’s work to find the unit price of the pack is shown below.



Where did Milo make his first error?
He assumed the pens are equally priced.
He wrote the unit rate incorrectly.
He made a place value error when dividing.
He multiplied instead of dividing.

Answers

He wrote the unit rate incorrectly

He put the 8 pens over the 1.09 and that means division he should have wrote to like a multiplication problem

Help Me Please With This

Answers

Answer:

Step-by-step explanation:

Answer:

The chart is adding by 3

Step-by-step explanation:

She is getting payed $21 for every 5 weeks

So every time she gets payed it adds 3

in real life how is slope-intercept form used

Answers

Real-life applications of slope inculde roofs, roads, handicap ramps, funiculars, cable cars, mountains for skiing, downhill cycling, and snowboarding/dirtboarding, roller coasters, skate ramps, and BMX jumps.

What that guy said^^ sorry I need some points :(

Pls HELPPP IM CONFUSED ON THIS SINGLE QUESTIONNN PLS SHOW HOW TO SOLVE IT WITH UR ANSWER

Answers

Answer:

c it's only the closest/similar to the triangle

Answer:

Step-by-step explanation: C because it looks very similar

How do I do this pls help

Answers

Answer:

Might be wrong, but, Stephan bought the bike and helmet for 115.2$

Step-by-step explanation:

(might be wrong)

$307 and 2 cent i think

Describe the overall shape of the histogram.

Answers

Answer:How would you describe the shape of the histogram? Bell-shaped: A bell-shaped picture, shown below, usually presents a normal distribution. Bimodal: A bimodal shape, shown below, has two peaks. This shape may show that the data has come from two different systems.

Step-by-step explanation:i

bell shaped, shows a normal distribution

Which value is FURTHEST from 0 on the number line?

20

-21

|20.5|

|-21.5|

Answers

|-21.5|

it doesn't matter which direction because its just furthest from 0 so you just need to find the highest number and you can ignore any negative signs

|-21.5| is the furthest from 0 on a number line.

Can You Please Help I Don't Get This

Answers

Answer:

A. Incorrect

B. Incorrect

C. Correct

D. Incorrect

Step-by-step explanation:

y = 5x + 6 means that Player A had 6 points and got 5 points per question.

The equation for the linear function is y = 2x + 6 because Player B had 6 points and gains 2 points per question.

A is incorrect because Player B gains 2 points and Player A gains 5 points

B. is incorrect because both of them have 6 points

C. is correct because Player A gains 5 points while Player B gains 2 points

D. is incorrect because there is already a correct answer and the evidence we needed was not given

I think c is your correct answer!!

giving brainless out get it right

Answers

Answer:

97.5

Step-by-step explanation:

Supplementary angles always add up to 180.

180 - 82.5 = 97.5

Answer:

97.5

Step-by-step explanation:

180-82.5=97.5

Supplementary means they add up to 180 degrees.

So just subtract 82.5 from 180. You get 97.5

I want that brainliest O^O

no links or i’ll report you.

Mr townsend needs to make 13 pairs of butterfly for customers for a play. Each pair of wings is made with 3/4 yard of fabric. The fabric costs $8 per yard.


You’ll apply properties of multiplication in the following steps to find the total cost of fabric.


1. Use multiplication to write an expression for the amount of fabric needed to make 13 pairs of wings.


2. Multiply the amount of fabric by the price per yard to find an expression for the total costs.


3. Use the associative and commutative properties to rearrange the terms in the expression to make it easier to calculate. Explain why the rearranged expression is easier to work with.


4. Simplify your expression to find the total costs. show your work

Answers

Answer:

1) 13*3/4

2) 9.75*8 which is $78.

3) which terms? (if you tell me i could do it?) (i dont get what 3 is asking)

4) (which expression...?)

HELPPPPPPPPPPPPPPPPPPPPPPPPP ASAPPPPPPPPPPPPP


Martha's family is on a road trip. After driving for a while, they stopped for gas, and then traveled 55 3/4 more miles before they decided to stop for lunch. After lunch, they tripled their distance traveled before stopping for the night. Their total distance traveled that day was 364 miles. How many miles had they traveled before their first stop for gas? Enter your answer as a simplified mixed number in the box.

Answers

Answer: 65 7/12

Step-by-step explanation: I took the test

Answer:

the answer is 65 7/12

Step-by-step explanation:

took the k12 quiz

hope this helps :D

quiz name: 5.18 Quiz: Model the Real World with Multistep Equations

evaluate 1/4 (15 + h) - g , when h=5 and g= 1

Answers

Answer:

4

Step-by-step explanation:

1/4(15+5)-1

1/4 x 20-1

1/4 x 20 = 5

5-1 = 4

Answer:

4

Step-by-step explanation:

please help. I'll give you extra points.

Answers

Answer:

See below

Step-by-step explanation:

Part A: For the current year, we notice that the price of corn is directly proportional to the number of bushels at a rate of $8 per bushel. We know this because 2 bushels * $8 = $16, 4 bushels * $8 = $32, and so on.

Part B: The rate for the previous year is $6 per bushel, so the current year rate is $2 more than the rate for the previous year

Wow great answer!! Keep going

big ideas math homework

Answers

Answer:

126.5

Step-by-step explanation:

first, break the figure into a triangle and a square (do I have to tell u where)

the square: 11*8=88

the triangle: 11*7=77          77/2= 38.5

88+38.5= 126.5

The solution is, the area of the given figure is : 126.5cm^2.

What is area ?

Area is the measure of a region's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object.

here, we have,

given that,

we need to find  the area of the given figure.

so, we have ,

first, break the figure into a triangle and a square

now, we get,

the square:

area= 11*8

       =88

and, we have,

the triangle:

area =1/2* 11*7

       =1/2*77          

       = 77/2

       = 38.5

so, we get,

the area of the given figure is:

88+38.5= 126.5

Hence, The solution is, the area of the given figure is : 126.5cm^2.

To learn more on Area click:

brainly.com/question/20693059

#SPJ2

Write the equation of the line in the graph in POINT-SLOPE form.

Answers

Answer: y= -8/4x+2

Step-by-step explanation:

find our y-intercept and slope

(rise over run to find your slope)

the two points it provides are what you will use to find the slope

see how for you run from point A to B then your rise as well

it should be rise=-8 run=4

0,2 is your y-intercept

now use your equation y= mx+b

b=your y-intercept and mx= your slope

plug the numbers in and you will get the answer

Convert 45 dollars earned in 3 hours to a unit rate. Write your answer using the $ sign and the word "per".

Answers

45$ divided by 3 which is 15 so per hour you make 15$ an hour.
Answer = $15 per hour

Explanation:
$45/ 3 = $15
So, the unit rate is 15

Is it 1,2,6,10,14 Please explain

Answers

Answer:

Melinda adds $12 to her savings account each week and Marcus adds $14 each week  

Melinda adds $2 less than Marcus

Step-by-step explanation:

Melinda:

135 - 75 = 60

60 ÷ 5 = 12

She saves $12 each week

Marcus:

y=14x+25

y=14x5+25

y= 70+25

y=95

95-25=70

70÷5= 14

Marcus saves $14 each week

Melinda will save 12 dollars a week and Marcus 14

Marcus has earned 353 out of 400 points (88% or B+) in Math class. He needs 90% to earn an A-. There is one test left worth 100 points. How many points does Marcus need on the test to raise his grade to an A-?

Answers

Answer:

97

Step-by-step explanation:

Marcus is aiming for an A- (90-94 percent). The question states that there is another test awaiting that is worth 100 points. In order to find the answer to the question, you need to:

1.) Add 400 + 100, to show how many points there are in total.

2.) Use the answer choices and add it to 353.

88 + 353 = 441

93 + 353 = 446

97 + 353 = 450

3.) Find the percentage of the sums.

441/500 = 88%

446/500 = 89%

450/500 = 90%

Since Marcus is aiming for an A-, we can conclude that obtaining 97 points will help Marcus achieve an A-.

2nd option,97 I think

- 1/3 (4+z)=-5/6
plz will mark as brainlest

Answers

Answer: = − 3 /2

Precalculus, Matrix

Rearrange terms, Combine multiplied terms into a single fraction, distribute, Multiply all terms by the same value to eliminate fraction denominators, Multiply all terms by the same value to eliminate fraction denominators . Cancel multiplied terms that are in the denominator . Multiply the numbers . Add 4 to both sides of the equation . Simplify.

Divide both sides of the equation by the same term  . Simplify

Answer:

z = -3/2

Step-by-step explanation:

Our goal here is to solve -1/3 (4+z)=-5/6 for z.

Begin by multiplying both sides by 6, to eliminate the fractions:

-2(4 + z) = -5

Isolate (4 + z) by dividing both sides by -2:  4 + z = 5/2

Finally, determine z by subtracting 4 from both sides:  z = 5/2 - 8/2 = -3/2

z = -3/2

The owner of a lemonade stand mixes juice that costs 2 dollars per gallon with juice that costs 7 dollars per gallon. She gets 20 gallons of punch that costs 4 dollars per gallon. How much of each juice does she use?

Answers

Answer:

8 gallons at $7

12 gallons at $2

Step-by-step explanation:

x gallons at $7 with the remaining (20 - x) gallons at $2 to get 20 gallons at $4

x(7) + (20 - x)(2) = 20(4)

Distribute

7x + 40 - 2x = 80

Combine like terms

5x + 40 = 80

Subtract 40 from both sides

5x = 40

Divide both sides by 5

x = 8 gallons at $7

20 - x = 12 gallons at $2

write a summary about what happened in chapter 6 in mayflower treasure hunt

Answers

Answer:

This is not math

Step-by-step explanation: well its kinda obvious...

Todd and his friends are painting 5 equal sections of a wall. The wall is 10 feet tall, but its length is unknown.
Each section will be a different color, so they need to know the area of each section.
so , i said 5/10x area = length * width A=10*x a= 10x
then i said you should divide , next i said 10x/5 10x in five sections is 2 in each q1 said area 10*x but x=2 so 10*2=20 is this correct?

Answers

I believe so because if you are finding a area you do length x width

The area of the triangle is less than 18 square inches. Select an inequality that represents a

Answers

Answer:

(1/2)(6)(a) < 18

Step-by-step explanation:

We know the formula for the area of a triangle is 1/2 b x h

The base is 6in and the height is a, so the equation is 1/2 6 x a.

The area is less than 18 sq in, so 1/2 x 6 x a < 18

Now, let's solve the inequality.

1/2 6 x a < 18

3 x a < 18

a < 6

Hope this helps :)

To make orange fizz, Noah mixes 4 scoops of powder with 6 cups of water. Andre mixes 5 scoops of powder with cups of water. Create a double number line or a table that shows different amounts of powder and water that taste the same as Noah’s mixture.

Answers

Answer:

This should help

Step-by-step explanation:

Haley and Sabrina are both training for a race. Haley runs 4.2 miles each day. Sabrina has been running 2/3 as many miles each day as Haley. Next week, Sabrina is going to increase the miles she runs each day by 25%. Haley and Sabrina both train by running 6 days each week. What is the total number of miles Sabrina will run next week to train for the race?

Answers

Answer:

Sabrina will train 21 miles next week for the race.

Step-by-step explanation:

2/3 of 4.2=2.8

%25 more of 2.8=3.5

3.5*6=21 miles

Answer:

3.5*6=21 miles

Step-by-step explanation:

While eating lunch, Vivian ate 65% of the carrots she had in her bag. There were 20 carrots in her bag before she ate any. How many carrots did Vivian have left in her bag after she ate?

Answers

Answer:

Vivian would have 7 carrots left to spare if she ate 65% of the carrots in the bag.

Step-by-step explanation: Since 65% of 20 carrots equals 13 carrots, we would do 20 - 13. In which equals 7 so she has 7 carrots left in fer bag

Equation: 20-x=?

Solution: 20 - 13=7

If I got it wrong, please let me know. And if I got it right, can you please mark me as Brainliest? I'm trying to get pass the "ambitious" rank. Hope this helps you out!

Which equation has a solution of s = 3/4?

Answers

Answer:

the answer is that you have to follow these rules.

Step-by-step explanation:

1. Simplify each side of the equation by removing parentheses and combining like terms.

2. Use addition or subtraction to isolate the variable term on one side of the equation.

last but not least

3. Use multiplication or division to solve for the variable.

(4,-3) hope it helps

Sorry for the bad quality but Plsss help

Answers

it’s ok for the quality
It’s not proportionate

Hi friends! Could you help me?

"Use the least common denominator to write an equivalent fraction for each fraction."

5 4
__ __
9' 15

Answers

Answer:

1\5

Step-by-step explanation:

lcm of 9 and 15 = 45

5/45 + 4/45

= 9/45

= 1/5

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