Mathematics High School

If AC =15 how long is ED? Help me :(

Answers

Answer 1

Answer:

7.5

Step-by-step explanation:

Using similar triangles.

Answer 2

Answer:

ED=7.5

Step-by-step explanation:

ΔABC is similar to ΔDEB (they share ∠B, and ∠C=∠D and ∠A=∠E because corresponding angles), so their sides are in ratio:

ED/AC=BD/BC

We can see that BC is twice BD (marked), so we know BD/BC=0.5

ED/AC=BD/BC

ED/15=0.5

ED=7.5

Related Questions

Can someone help me on this plzzz and thank u

Answers

Answer:

x = 23.4

Step-by-step explanation:

[tex]5 \cdot (x + 10) = 167\\5x + 50 = 167\\5x = 117\\x = 23.4[/tex]

Over the past few months, Brody has eaten 3 glazed donuts and 6 other donuts. Considering this data, how many of the next 3 donuts Brody eats would you expect to be glazed donuts?

Answers

Answer:1

Step-by-step explanation:

Answer: 5

Step-by-step explanation:

First, write the experimental probability as a fraction in simplest form.

P(glazed donut)

glazed donuts

total

2+2+5+3

The experimental probability is

We can predict the outcome of the second set of trials by assuming that the ratio will be the same as in the first set of trials. Write a proportion by setting the two ratios equal to each other, then solve.

(420)

(420) Multiply both sides by (420)

120

= 4n Simplify

= n Divide both sides by 4

You would expect 5 out of the next 20 donuts Brenna eats to be glazed donuts.

I really suck at math. Can anyone give me good tips to remembering math (algebra and geometry especially) or give me good websites to look into?
PLEASE HELP!!!

Answers

Answer:

https://www.mathpapa.com/algebra-calculator.html

Step-by-step explanation:

Mathpapa is a pretty good and reliable algebra calculator would say to use it. It also has Inequalitys and system of equations calculators.

Answer: Symbolab, and this site are going to carry you through algebra.

A number has exactly 8 factors, two of which are 8 and 12.
List all the factors of the number.

Answers

Answer:

Step-by-step explanation:

The number is 24 because

Factors of 24 = 1 2 3 4 6 8 12 24

please help me with this i will mark you brainliestttttttttt

Answers

Answer:

length x width x height

2/3 x 3/5 x 3/4 = 18/60

18 divided by 60 = 0.3

Step-by-step explanation:

Sphere A has radius of 2 cm. Sphere B has radius of 4 cm. (=433 V = 4 3 π r 3 use 3.14 for π . ) a) The volume of sphere A is b) The volume of sphere b is c) The volume of Sphere B is_______times greater that the volume of Sphere A.

Answers

Answer:

volume of Sphere B is 8 times greater than the volume of Sphere A

Step-by-step explanation:

Sphere A: V = 4π (2^3)/3 = 32π/3

Sphere B: V = 4π (4^3)/3 = 4π(64)/3 = 256π/3

volume of Sphere B / volume of Sphere A = (256π/3)/(32π/3) = 8

When calculating for volume, you use the area of the 2D shape.

True or false.

Answers

Answer:

I think true.

Step-by-step explanation:

Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.

false false false false false

Find x
In rectangle QRST, QS = 5x - 31 and RT = 2x + 11.
Find the lengths of the diagonals of QRST.

A.4
B.6
C.14
D.16

Answers

Answer:

Step-by-step explanation:

The diagonals of a rectangle are congruent, then

5x - 31 = 2x + 11 ( subtract 2x from both sides )

3x - 31 = 11 ( add 31 to both sides )

3x = 42 ( divide both sides by 3 )

x = 14

Then

RT = 2x + 11 = 2(14) + 11 = 28 + 11 = 39

The diagonals are each 39 units

The box plot (Player A) and table (Player B) represent the number of goals scored in a season by two soccer players.

If you were a coach of a soccer team, which player would you want on your team and why? Think about how consistency would be affected by IQR and range.

Answers

Answer:

Step-by-step explanation:

You love watching movies on your phone! Unfortunately each movie uses about
0.75GB. For this billing cycle, you’ve already used up 3 GB and your cellular plan
has a 15 GB data limit. How many movies can you watch without going over your
data limit?
1) Let M represent the number of movies you watch. Write an INEQUALITY to
model the number of movies that can be watched without going over the
data limit. Solve the inequality and show all of your work.

Answers

Answer:

[tex].75M+3<15[/tex]

[tex]M<16[/tex]

Step-by-step explanation:

This is a linear inequality so you would solve it as any normal linear system:

Subtract 3 from both sides to isolate the M term :

[tex].75M<12\\[/tex]

Divide each side by .75 to isolate M:

[tex]M<16[/tex]

That means you can watch less than 16 movies and stay under your 15GB limit.

If I helped, a brainliest would be greatly appreciated!

Fine the circumference... need answer quick

Answers

Answer:

C =37.7m

Step-by-step explanation:

The circumference is

C = pi *d

Using the pi button for pi

C = 37.69911184

C =37.7

If a number cube is rolled once, what is the probability of an even number facing upward?

Answers

Answer:

So the odds of rolling an even number are 3:(6−3)=1:1

Step-by-step explanation:

The theoretical probability of spinning a number a number less than 7 is__?

Answers

6/6. you will always get a number less that seven.

(-3,-1) rotated 180 degrees

Answers

Answer:

(3,1)

Step-by-step explanation:

to rotate 180 degrees just flip the value :)

Answer:

(3, 1)

Step-by-step explanation:

"(-3,-1) rotated 180 degrees."

A point rotated 180 degrees is:

[tex](x,y)\rightarrow(-x,-y)[/tex]

Applying the rule to the point given:

[tex](-3, -1)\rightarrow (3,1)[/tex]

Hope this helps you.

i’ll give brainliest, please show work

Answers

Answer:

H = .298

Step-by-step explanation:

First lets plug in 1.5 for R and 16 for Surface area to get the following

2*pi*1.5^2+2*pi*h = 16 We are solving for H or height

Lets simplify this out a bit to get

16 = 14.13+6.28h

Subtract 14.13 from both sides

1.87 = 6.28h

h= .298

To check our answer lets plug the height into the equation

2*pi*1.5^2+2*pi*.298 = 16

Yes the height or H is .298

To check your answer just plug back what you got before into the equation

Expand.
Your answer should be a polynomial in standard form.
2x^2(9x^2 – 16)

Answers

18x^4-32x^2 in standard form I believe.

find the size of x and y
this is a figure of parallelogram

Answers

Answer:

x = 75° , y = 105°

Step-by-step explanation:

Opposite angles in a parallelogram are equal , then

x = 75°

Consecutive angles in a parallelogram are supplementary, sum to 180° , so

x + y = 180° , that is

75° + y = 180° ( subtract 75° from both sides )

y = 105°

The circumscribing circle O and the inscribed circle of triangle ABC have the same center. Which of the following constructions are crucial to draw a circle inscribed on a given equilateral triangle? Select all that apply.

Answers

Answer:

Construct perpendicular lines & construct angle bisectors

Step-by-step explanation:

I saw someone ask the same question and they had that anwser^

The constructions that are crucial to draw a circle inscribed on the given equilateral triangle are:

Construct line segmentsConstruct angle bisectors.

How to make an inscribed circle in a triangle?

There can be many different ways, one can include arc way, one can include angle bisector and perpendicular, and we can even try to discover some. But usually, (for the angle bisector and perpendiculars), we do the following:

Divide one of the angles in half.Divide another angle in half.The incenter, or point where they cross, is the inscribed circle's centre.Construct a perpendicular from the triangle's centre point to one of its sides.Draw an inscribed circle by placing the compass on the centre point and adjusting the length to where the perpendicular crosses the triangle.

Drawing random arcs isn't gonna help mostly neither unspecific line segments. Drawing angle bisectors of the triangle and perpendiculars is one of the part.

Thus, the constructions that are crucial to draw a circle inscribed on the given equilateral triangle are:

Construct line segmentsConstruct angle bisectors.

Learn more about inscribing circle here:

https://brainly.com/question/17043518

Jayden has a 32-ounce sports drink. He drinks 12 ounces. Write the percentage of ounces Jayden has left of his sports drink.

Answers

Answer:

62.5 %

Step-by-step explanation:

32 - 12 = 20 ounces left

20/32 = 0.625

0.625 x 100 = 62.5 %

Answer:

62.5%

Step-by-step explanation:

Please answer it’s urgent!!!!

Answers

Answer:

1.5 square meters for light flooring

0.5 squaremeters in dark flooring

Step-by-step explanation:

Common sense

Find the scale factor applied to figure A to produce figure B

Answers

Answer:

0.25

Step-by-step explanation:

12x = 3

x = 0.25

The scale factor is 4

A chord 8 inches long is 3 inches from the center of a circle, as shown below. What is the radius of
the circle, to the nearest tenth of an inch?
please help immediately

Answers

Answer:5.0

Step-by-step explanation:

John scored 17 out of 30 in the Entrepreneurship test calculate his marks in percentage give your answer to one decimal place

Answers

Answer:

well, one john isnt that smart . he scored a 57% (0.5666....repeating)

Step-by-step explanation:

17 divided by

The circle graph below shows the scores of the latest math test. It represents 32 students. Approximately how many students earned a B or higher on the math test? 32 20 8 12

Answers

Answer:

Step-by-step explanation:

The circle graph below shows the scores of the latest math test. It represents 32 students. The 12 students earned a B or higher on the math test.

How to find the percentage from the total value?

Suppose the value of which a thing is expressed in percentage is "a'

Suppose the percent that considered thing is of "a" is b%

Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b percent means).

Thus, that thing in number is

[tex]\dfrac{a}{100} \times b[/tex]

The circle graph below shows the scores of the latest math test. It represents 32 students.

The students earned a B or higher on the math test

38% of 32

[tex]0.38 \times 32\\\\= 12[/tex]

Learn more about percent here:

https://brainly.com/question/11549320

#SPJ2

En una multiplicación, si un factor es un número natural y el otro es un número entero negativo, el producto es siempre menor que cada uno de los factores. Es verdadero o falso

Answers

Answer:

Falso.

Step-by-step explanation:

Acá tenemos la proposición:

"En una multiplicación, si un factor es un número natural y el otro es un número entero negativo, el producto es siempre menor que cada uno de los factores."

Primero tratemos de demostrar que esto es falso, para ello debemos encontrar un solo ejemplo en el que la proposición sea falsa.

Elijamos al número 1 como el número natural,

Elijamos -10 como el número entero negativo.

El producto es:

1*-10 = -10

Ahora veamos si el producto es menor que cada uno de los factores.

-10 < 1 ?

Si, -10 es menor que 1.

Ahora veamos con el otro factor:

-10 < - 10?

No, un número no puede ser menor que si mismo.

Entonces el producto no siempre es menor que cada uno de los factores.

Entonces la proposición es falsa.

A 150-pound person plans to jump off a ledge attached to a cord of length 42 feet. If the

stiffness of the cord is no less than 16 pounds per foot, how much will the cord stretch?

Answers

The Answer Is:

9.375 ft

i need help finding the radius of the cylinder. i do not know what i have to do. any help will be greatly appreciated. thank you in advance :))

Answers

Answer: The radius is 5. Hopefully this helps. :)

Step-by-step explanation:

V = π r2 h 125/5=25

125π = π r2 5 r2=25

125π= π*5^2*5 r=5

Find the value of x that makes the following equation true
- 4x + 26 = -2

Answers

Answer:

first collect the like terms so that you have -4x is equals to -2 - 26 then negative 4x is equals to -28 divided by -4x is equals to 7

Please help ASAP !!!

Answers

Answer: What do you need help with?

Step-by-step explanation: I don’t understand.

8 friends share 1/3 of a bag of chips. If they each get an equal share how much of the bag of chips does each friend get?

Answers

Answer:

0.04166666666

I think, im not sure

Step-by-step explanation:

1/3 divided 8 = 0.417 (rounded)

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