Mathematics College

Given Triangle DEF is isosceles and angle D is the vertex angle, Find x, DE, DF, EF

Given Triangle DEF Is Isosceles And Angle D Is The Vertex Angle, Find X, DE, DF, EF

Answers

Answer 1

Answer:

x=2;DE,EF=9,DF=5

Step-by-step explanation:

Since DEF is isoceles, you can set the equations

x+7 and 2x+5 equal to each other

x+7=2x+5, now solve for x

-x=-2,

x=2, now plug in for each side

DE,EF=9

DF=3(2)-1=5

Related Questions

Find the missing angle.

Answers

add all the angles and subtract that number from 360. missing angle: 87

Answer:

75

Step-by-step explanation:

All the angles would add up to 360

145+55+35+55=285

Then:

360-285=75

>ZUW=75

Help me please :(((((

Answers

727727 is your answer :)

Use substitution to solve the system of equations.


28 = x – 7y
–3x + 9 =4y

Answers

Hello!

Answer:

[tex]\boxed{ \bf Solution:~(7,-3)}[/tex]

Explanation:

I solved the problem in the image attached below. Go check it out! If you don’t understand a certain step, you may ask me in the comments.

78 miles in 3 days, how many in 5 days

Answers

Answer:

390 but i might be wrong

Step-by-step explanation:

Answer:

130

Step-by-step explanation:

26 miles per day 5 days is 130 miles

Barry saved $7 less than Nadine. Together they saved $25.
How much did Nadine save?

Answers

Answer:

$16

Step-by-step explanation:

25-7 = 18

18 ÷2 = 9

9 + 7 = 16

the range of the quedractic function is {y|y

Answers

well I have no idea what that means but I hope you find your answer

Answer: The question is incomplete, Hope I could've helped.

Let Ln denote the left-endpoint sum using n subintervals and let Rn denote the corresponding right-endpoint sum. In the following exercise, compute the indicated left and right sums for the given function on the indicated interval.
L4 for f(x)=1/x−1; [2,3]

Answers

Answer:

[tex]L_4=0.7595[/tex]

Step-by-step explanation:

We are given that

[tex]f(x)=\frac{1}{x-1},[/tex][2,3]

We have to find L4

It means n=4

[tex]\Delta x=\frac{b-a}{n}=\frac{3-2}{4}=\frac{1}{4}=0.25[/tex]

Now, intervals are

[2,2.25],[2.25,2.50],[2.5,2.75],[2.75,3]

Now,

[tex]L_4=f(x_0)\Delta x+f(x_1)\Delta x+f(x_2)\Delta x+f(x_3)\Delta x[/tex]

[tex]L_4=\frac{1}{2-1}(0.25)+\frac{1}{2.25-1}(0.25)+\frac{1}{2.5-1}(0.25)+\frac{1}{2.75-1}(0.25)[/tex]

[tex]L_4=0.7595[/tex]

Hector bought 6 bags of candy. There were 7 pieces of candy in each bag. How many pieces of candy did Hector buy?

Answers

Answer:

42 pieces (6*7)

Step-by-step explanation:

please mark brainliest, give a thanks, and rate a five stars if this helped! feel free to ask anymore questions if you need any more help! thanks!

(lol optional): add my sc: tealyn337

Answer: 42 Pieces of candy

Step-by-step explanation:

Just simply multiply 7 times 6

Here is a easy one if you are low on points

Answers

Answer:

11x -21= 180

11x=201

18.2727273

Step-by-step explanation:

Urgent help need it plz​

Answers

Answer:

angle 1 = 51

angle 2 = 34

angle 3 = 95

angle 4 = 38

angle 5 = 47

angle 6 = 74

angle 7 = 59

Step-by-step explanation:

a straight line is 180 degree, so to find angle 1, subtract 129 by 180.

angle 2 is found by adding angle 1 and 95 then subtract that by 180.

angle 3 and 95 are opposite angles, so they are the same

for angle 4, add angle three and 47 then subtract that by 180

angle 5 is 47, they are opposite

angle 7, subtract 121 by 180

angle 6, you add angle 5 and 7, and subtract that by 180

they already answered! but good luck :)

Please and thanks DUE IN 5min

Answers

Answer:

3 and 1/4

Step-by-step explanation:

Simplify the following expression 5^-3

Answers

Answer 1/25 or decimal 0.008

Step-by-step explanation:

Answer:

0.008

Step-by-step explanation:

helo

Find the difference. Enter your answer in simplest terms, using the slash (1)
as the fraction bar.
5/8 - 1/3 =?

Answers

Answer:

the difference between 5/8 and -1/3

is that  if you divide 5/8 = 0.625

and -1/3= -0.333333333

Which could be the name of a plane?

A. JK
B. M (kinda cursive)
C. h
D. GH

Answers

Answer:

gh i think im not sure but that might be right i hope

Answer:

jk

Step-by-step explanation:

para jungkook de jk lang

need help asap please

Answers

Answer:

[tex]\displaystyle no[/tex]

Step-by-step explanation:

The triangle on the right is shorter than the triangle on the left, plus you an clearly see that we do not have enough information as proof that we cannot use this theorem.

I am joyous to assist you at any time.

Rana and Josie are cooking food for a party they need to cut up the food so people can share

Answers

Answer:

You didn't put a file or a question in ya question..

Step-by-step explanation:

Answer:

Hey there is nothing to solve here

Step-by-step explanation:

Please make something so we can solve it.

Plz help I am timed : (
Christian earned a 70, 89, 91, and 82 on his last four
spelling tests. What was Christian's average for these four
tests?
OA) 81
OB) 82
OC) 83
OD) 84

Answers

Answer:

its c or 83 bc you add them all together then divide by the amount of grades he has in total

answer: (C) 83

explanation: 70+89+91+82= 332/4(all together) would be 83

plz help and answer ASAP with full working

Answers

Answer:

Step-by-step explanation:

Gabriela's mass :  Pierre's mass = 3 : 8

Gabriela's mass =  3x

Pierre's mass = 8x

Total mass= (1/4) of  total height

3x + 8x = [tex]\frac{1}{4}(110 + 154)[/tex]

      11x = [tex]\frac{1}{4}*264[/tex]

      11x = 66

         x = 66/11

        x = 6

Gabriela's mass =  3x = 3*6 = 18 Kg

Pierre's mass = 8x = 8*6  = 48 kg

Need help ( 8th grade math)

Answers

It would be -3/1. This is because you find where it crosses the Y axis which is at 4. Then you go down three and over one to give you the next even point. Which going down to the right means it’s negative. Hope this helps! Please mark branlist if possible!!

Slope=Rise/Run

=y2-y1/x2-x1

Take any two co-ordinates

-2-4/2-0

-6/2

-3

Graph the line that passes through the points (-6,5) and (-9,9) and determine
the equation of the line.

Answers

Y= -3/4x -3
Hope this helps

Simplify the following expression (2x^2y^5)^3

Answers

Answer:

The correct answer is,

[tex] {8x}^{6y {}^{5} } [/tex]

15-24 divide3 •2+13= Simplify the expression

Answers

Answer:

7

Step-by-step explanation:

Given: 15 - 24 divide 3 . 2 + 13 =

The expression can be solved step-wisely so as to determine the appropriate answer.

So that,

15 - 24 = -9

-9 ÷ 3 = -3

-3 . 2 = -6

-6 + 13 = 7

The required answer to the expression is 7.

Thus,

15 - 24 divide 3 . 2 + 13 = 7

what is 2-2? i dont know

Answers

I think 0? Correct me if I’m wrong

Answer:

2-2 = 0

Step-by-step explanation:

2 is a positive number

While the second 2 is a negative 2

(-2)

so a positive and a negative number can cancel eachother out

Therefore the answer is 0 since they are both 2 :)

Please help! I'll mark brainliest!! :)

Answers

Answer:

Area =  201  1/4 yard^2

Or in decimal form: 201.25 yard^2

Step-by-step explanation:

First convert the mixed numbers into improper fractions or even decimal form  so it is easier to operate with them:

Base = 11  1/2 yards = 23/2 yards = 11.5 yards

Height = 17 1/2 yards =  35/2 yards = 17.5 yards

Use the formula for the area of a parallelogram:

Area = Base x Height

which in our case give:

Area = 23/2 x 35/2 = 805/4 yard^2 = 201  1/4 yard^2

Or in decimal form: 201.25 yard^2

help plzzzzzzz
15 points for that​

Answers

Answer:

You just find the volume of the cup and subtract the volume of the froth (whatever that is).

V(cup) = pi * r^2 * h

...........= pi * 4.3^2 * 11.2

...........= 650.586cm^3

V(froth) = pi*r^2*h

............= pi*4.3^2*0.4

.............=23.232cm^3

V(hot chocolate) = V(cup) - V(froth)

.........................= 650.586 - 23.232

.........................= 627cm^3

write an equivalent expression in standard
form and collect like terms.
2x - (x + 8) - 4

Answers

Answer:

3x-12 because you distribute and then collect like terms

Help babyyyy I need itttt

Answers

Answer:

4

Step-by-step explanation:

How do you live a normal average life?

Answers

Answer:

by being normal UvU

Step-by-step explanation:

Common sense

"Normal isn't a thing because you are living your own life, it's your choice to make" -MikuHatsunepink

I know this is old, but someone's answer was deleted so I put this here

If it cost 2.5 per square feet, what is the approximate total cost of making this pipe that is open at both ends?

Answers

Answer:

3.10 feet square

Step-by-step explanation:

The school show choir is holding a car wash to raise $350 for
new costumes. After spending $30 on supplies, the students will
wash cars for donations of $6 each.
This situation can be modelled by the inequality 6C + 30 > 350,
which has the solution c> 53.33. What is the best way to
interpret this solution?
A. Show choir needs $53.33 to meet their goal.
B. Show choir should have spent another $53.33 on supplies.
C. At least 54 show choir students must participate in the car
wash.
D. Show choir needs to wash at least 54 cars.

Answers

Answer:

D.

Step-by-step explanation:

It’s the only option that makes sense. Option A. Is invalid because they need to make $350. Option B. Is just purely invalid and has no context to support the theory. C. Is possible, but we can have students wash more than one car, so we don’t need fifty four kids.

D. Is your answer.

Hope this helped!!

LunarRose3

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