Mathematics High School

If angle DEF is an isosceles triangle with DE congruent to EF, Find x

If Angle DEF Is An Isosceles Triangle With DE Congruent To EF, Find X

Answers

Answer 1

Answer:

Fourth choice, 16

Step-by-step explanation:

The 2 angles are both 74 degrees, so the side that is facing each angle will be the same length, so:

9x - 73 = 3x + 23

add 73 to both sides

9x = 3x + 96

subtract 3x from both sides

6x = 96

divide by 6

x = 16

Related Questions

can someone please help me find out what LN and KN is

Answers

Answer:

LN= 3,9

KN=-2,9

Step-by-step explanation:

its that answer because on the number lime L is 3 and N is 9 and K is -2

1-4x/2x+1=4/1-5x
solve in quadratic equations​

Answers

Answer:

I can only assume that the entire 1-4x is divided by 2x, and 4 by all of 1 - 5x.  You can guarantee more accurate results by using brackets where appropriate.  If I read that expression with the correct notation, it reads as [tex]1 - \frac{4x}{2x} + 1 = \frac{4}{1} - 5x[/tex].

Assuming instead that it's meant as [tex]\frac{1 - 4x}{2x + 1} = \frac{4}{1 - 5x}[/tex], we can solve it as shown below, giving us x values of 1 and 3/20 (or 0.15).

Step-by-step explanation:

First let's reformat this to the usual ax² + bx + c format:

[tex]\frac{1 - 4x}{2x + 1} = \frac{4}{1 - 5x}\\(1 - 4x)(1 - 5x) = 4(2x + 1)\\1 - 5x - 4x + 20x^2 = 8x + 4\\20x^2 - 5x - 4x - 8x + 1 - 4 = 0\\20x^2 - 17x - 3 = 0[/tex]

Let's solve it with the quadratic formula:

[tex]x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}\\\\x = \frac{17 \pm \sqrt{-17^2 - 4\times 20 \times( -3)} }{2\times20}\\\\x = \frac{17 \pm \sqrt{289 + 240} }{40}\\\\x = \frac{17 \pm 23 }{40}\\\\x = 1, \frac{3}{20}[/tex]

Janet buys a pair of shoes for 50% off the original price of $80. What is the sale price of the shoes?

Answers

Answer:

$40

Step-by-step explanation:

Answer:

$40

Step-by-step explanation:

80 divided by 2 = 40 50 %

1. Write an equation that shows 45% of c is 144. ​

Answers

Answer:0.45c=144

Step-by-step explanation:

45%= 0.45

0.45*c=144

I NEED HELPPP!
7th gradeee

Answers

Answer:

- 2/3

-2/3

2/-3

Step-by-step explanation:

please it’s an emergency

Answers

Answer: C

Step-by-step explanation:

Okay first set a comparison since the two triangles are similar

x-1/20=x-1+27/3x+8

x-1/20 = x+26/3x+8

cross multiply

20x+520=3x^2+8x-3x-8

3x^2-15x-528=0

3(x^2-5x-176)=0

im kinda lazy to factor this out so i used an online calculator right here but factor it out like a good kid

x=16, x=-11

it has to be positive so x=16

C

I would love some help here

Answers

Answer:

first

Step-by-step explanation:

Which point represents the ordered pair (-2 1/4, 2/3)?
A. Point Q
B. Point R
C. Point S
D. Point T

Answers

Answer: c. Point S

Step-by-step explanation:

Answer:point s

Step-by-step explanation:

Help ASAP !
Help ASAP !
Help ASAP !
Help ASAP !

Answers

Answer:

5/28

Step-by-step explanation:

5/4 / 7     =  5/4 * 1/7  = 5/28

Answer:

5/28

Step-by-step explanation:

it could also be 0.17 in decimal form

which is an example of the electromagnetic force​

Answers

Answer:

Light

explanation:

All light are waves in the electromagnetic field, from gamma rays, though x-rays,

Answer 2:

I'd say the second most common example would be molecules as they all rely on electromagnetism to bind the atoms to each other.

Answer: All of the light from the Sun and other sources consists of photons which are the electromagnetic force carriers.

electrostatic forces and magnetic forces.

Step-by-step explanation:

the slope of the line y=6x-1 is steep
true or false?

Answers

Answer:

yes true

Step-by-step explanation:

The price of a Nintendo Switch was on sale on Black Friday for $250, the original price was $300. What percent was it marked down?

A. 20%
B. 25%
C. 50%
D. None of the above.​

Answers

Answer:

A

Step-by-step explanation:

Answer:

none of the above

Step-by-step explanation:

plz mark as brainliest

8. Syairra needs to take an Uber to get to
the airport. The Uber charges $5.00 for
the first mile, and then $3.00 for each mile
after that. If the total charge is $62.00,
then how far was Syairra's taxi ride to the
airport?

Answers

you would do “62=3x+5”

subtract 5 from both sides to get 57=3x
divide both sides by 3 to get 19.

the answer is 19 miles

Answer: 20 miles

Step-by-step explanation:

Since the Uber charges $5.00 for the first mile you have to subtract that from the total which is 62.

62.00 - 5.00 = 57.00

Then you keep subtracting 3.00 from 57.00 or you can divide 57 by 3 because 57 is how much money is left and the Uber charges 3 dollars for each mile after the first.

57.00 divided by 3.00 is 19

Then add 1 to 19 which equals 20 miles. You add 1 to 19 because 19 is the amount of miles she goes but that doesn’t include the 1st mile.

Sorry if this is confusing

Write one linear equation that is Parallel to y = - 4x + 7

Answers

Answer:

y=-4x+3

Step-by-step explanation:

same slope different y intercept.

If I can read 54 pgs in 3 days, how many can I read in 1 day?






7 notebooks cost $21. How much for 5 notebooks?

Answers

Answer:

18 pages

$15

Step-by-step explanation:

54/3= 18

21/7= 3

3*5=15

Answer:

105

Step-by-step explanation:

Please help with figures

Answers

Answer:

x=11.9 mm

Step-by-step explanation:

Can I PLEASE GET SOME HELP FROM SOMEBODY ANYBODY for these questions 26,43,44,45 PLEASE ​

Answers

Answer:

sure

Step-by-step explanation:

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

answer choices?

Please I need help :(

Answers

Answer:

Step-by-step explanation:

Answer:

The picture has the answer

Step-by-step explanation:

First since the y-intercept is -2 you will draw a point on -2 on the y - axis.

Next you will do rise over run. Go up 3 from -2 then move to the right 2. Then draw another point. And draw a line through the two points.

I will do a pic for you!

Hope this helps ya!!

A community needs to raise at least $5,000 for a new park. They have raised $3,250 so far and are selling flower arrangements for $25 each. How many flower arrangements, a, do they need to sell to raise at least $5,000?

A. 70
B. 69
C. 74
D. 75

Answers

Answer:

https://brainly.com/question/20226577

Step-by-step explanation:

B. 69

It 69 because if you subtract 5,000 and 3,250 you get 1725 remaining so time 69 with 25 you get 1725 so the answer is 69

The product of a number b and -1.6 is less than -9.6.

Answers

Answer:

I don't have Idea

PLEASE HELP ASAP!!!!!!!!!!

Answers

Answer: -15 if I am wrong then -35

Answer:

-15

Step-by-step explanation:

-15 .hwushshshsjwo

2x – 3y = 17
–3x + y = –1
solve by elimination

Answers

Answer:

(-2,-7)

alternatively

x: -2

y: -7

Are these three side lengths a right triangle?
5, 5, 5√s
yes or no?

Answers

Answer:

no

Step-by-step explanation:

Answer:

No, it makes an isosceles triangle that has angles in two 70°'s, and 20°'s

Step-by-step explanation:

Which subset of the rational numbers best describes the number of students that could be in a classroom?
A. Whole numbers
B. integers
C. natural numbers
D. rational numbers

Answers

Answer:

Natural Numbers

Step-by-step explanation:

plz help i’ll mark brainliest for correct answer

Answers

Answer:B

Step-by-step explanation:

Given A is between Y and Z and YA = 11.5, AZ = 4x - 6 and YZ = 83.5, find AZ.
(Drawing a line may help you work the problem).

Answers

Answer:

kk

Step-by-step explanation:

kk

Chris is buying a new I-phone at the discount of 10%. The original price is $399.99. How much money will he pay for his new phone?

Answers

359.99 is the final answer do u want work

Answer:

He will pay $360.00 for his new phone. It best be at LEAST an IPhone 9.

Step-by-step explanation:

(x+1)^2-(x-8)^2
please help

Answers

simply each term

x^2+2x+1-x^2+16x-64

simply by adding terms

18x - 63

Solve the two-step equation and identify the steps.

2= -7/4 + 1/4x

1. Add 7/4 to both sides
2. Multiply both sides by 4.

The solution is 15.

Answers

Answer:

x = 15

Step-by-step explanation:

Given

2 = - [tex]\frac{7}{4}[/tex] + [tex]\frac{1}{4}[/tex] x

Multiply through by 4 to clear the fractions

8 = - 7 + x ( add 7 to both sides )

15 = x

Answer:

Answer:

Step-by-step explanation:

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