Help. What is the length of EF in the right triangle below.

Help. What Is The Length Of EF In The Right Triangle Below.

Answers

Answer 1

Answer:

A

Step-by-step explanation:

Since the triangle is right use Pythagoras' identity to find EF

The square on the hypotenuse is equal to the sum of the squares on the other two sides, that is

EF² + DF² = DE² ← substitute values

EF² + 12² = 18², that is

EF² + 144 = 324 ( subtract 144 from both sides )

EF² = 180 ( take the square root of both sides )

EF =  → A

Answer 2
Wish you luck on that

Related Questions

1)Ellen wanted to buy the following items:
∙ A DVD player for $49.95 ∙ A DVD holder for $19.95 ∙ Personal stereo for $21.95
Does Ellen have enough money to buy all three items if he has $90.s

Answers

Answer:

[tex]\huge\boxed{\tt{ No.}}[/tex]

Step-by-step explanation:

DVD player = $ 49.95

DVD Holder = $ 19.95

Personal Stereo = $ 21.95

Sum of Prices = $ 49.95 + $ 19.95 + $ 21.95 = $ 91.85

Ellan has $ 90 which is less than $ 91.85 which means that Ellan does not have enough to buy all three items.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807


18. A figure is said to be regular if its sides are equal in length and angles are equal in
measure. What do you mean by a regular quadrilateral?​

Answers

Answer:

If its 4 sides need to be equal and 4 angles need to be equal then it is a square.

Step-by-step explanation:

[tex]\huge\sf\fcolorbox{green}{pink}{Answer}[/tex]

Properties of regular quadrilateral :-

All sides are equal

All angles are 90° ( equal)

Square is only the regular quadrilateral

A ​$310 suit is marked down by 20​%. Find the sale price.

Answers

Answer:

the answer is 62!

Step-by-step explanation:

multiply

Answer:

$248

Step-by-step explanation:

310/100=3.1

3.1x20=62

310-62=248$

FIRST ONE TO GIVE ME A CORRECT ANSWER GETS BRAINLIEST

Answers

Answer:

y-4=5

add 4 on both sides

you get y = 9

replace y with 9

9 - 4 = 5

final answe is 5=5


CL 3-115. Jermaine has a triangle with sides 8, 14, and 20. Sadio and Aisha both think that they have triangles that are similar to Jermaine's triangle. The sides of Sadie's
triangle are 2, 3.5, and 5. The sides of Aisha's triangle are 4, 10, and 16. Decide who, if anyone, has a triangle similar to Jermaine's triangle. Be sure to explain how
you know
pening
1
CL 3-116. For the points R(-2, 7) and P(2,1) determine each of the following:

Answers

9514 1404 393

Answer:

  Jermaine and Sadie have similar triangles. Aisha's is not similar.

Step-by-step explanation:

The side lengths can be arranged smallest-to-largest and reduced to mutually-prime integers. If the triangles are similar, their side ratios will be the same.

  Jermaine's triangle has side ratios ...

     8 : 14 : 20 = 4 : 7 : 10

  Sadie's triangle has side ratios ...

     2 : 3.5 : 5 = 4 : 7 : 10 . . . . (same as Jermaine's)

  Aisha's triangle has side ratios ...

     4 : 10 : 16 = 2 : 5 : 8 . . . . . (different from Jermaine's)

Sadie and Jermaine have similar triangles.

Is this relation a function? justify your answer

Check image

A

B

C

D

Answers

Answer: No C

Step-by-step explanation:

The x values of the coordinates cannot repeat.

Using a straight line test, a straight line can be drawn vertically on the x axis point of 4.

h(x) = –2 – 5 help pls!!!

Answers

Answer:

h(0)= -5

h(-2)= -7

Step-by-step explanation:

Answer:

-5

Step-by-step explanation:

x just represents a value, so simply plug 0 into the equation instead of x.

h(0)= -0 - 5

h(0) = -5

help plz plz plz will mark brainliest

Answers

Step-by-step explanation:

We have Angle ZWD = Angle DWN.

=> 5v - 7 = 4v + 8, v = 15.

Therefore x = Angle ZWD = 5(15) - 7 = 68.

Matt has answered the questions on a test. What percentage of the test questions have 20/25 Matt answered?

Answers

Answer:

80% complete with the test

Step-by-step explanation:

what you would do is if he does 20 out of 25 questions you would think that 25 is 100 and you would see that 20 is 80% because of you doing 5,10,5,20,25 the 20 is the 4th one and 80 is the forth of 100 so the answer is 80%.

Hope this helps :)

help me pleaseee pleaseee

Answers

Answer:

x = 3

m<PAW = 1

Step-by-step explanation:

☆They are supplementary angles.

☆Supplementary angles equal 180 degrees.

[tex]- 11x + 17 3 - 1x + 43 = 180 \\ - 12x + 216 = 180 \\ \frac{ \: \: \: \: \: \: \: \: \: \: \: \: \: - 216 = - 216}{ \frac{ - 12x}{ - 12} = \frac{ - 36}{ - 12} } \\ x = 3[/tex]

☆Plug in for m<AEZ

[tex] - 1(3) + 4 \\ - 3 + 4 \\ 1[/tex]

☆m<PAW is corresponding to m<AEZ

☆Corresponding angles are congruent.

☆m<PAW equals 1.

Determine the number of zeros of the polynomial function f(x)= x^8-x^9

Answers

Step-by-step explanation:

Determine if odd, even, or neither.

The function is neither even nor odd

Answer:

9

Step-by-step explanation:

The highest power of x is 9:  x^9

and therefore this polynomial will have 9 zeros.


4. An angle is 50° more than its supplement. Find the angles.

Answers

Answer:

The angles measure [tex]65[/tex]° and [tex]115[/tex]°.

Step-by-step explanation:

Supplementary angles are a pair of angles whose measures add up to [tex]180[/tex]°. In this case, we know that one angle is [tex]50[/tex]° bigger than the other one, so if we let the measure of one angle be [tex]x[/tex], then the measure of the other angle will be [tex]x+50[/tex]. Therefore, we can write the following equation to solve for

[tex]x+x+50=180[/tex]

Solving for [tex]x[/tex], we get:

[tex]x+x+50=180[/tex]

[tex]2x+50=180[/tex] (Simplify LHS)

[tex]2x+50-50=180-50[/tex] (Subtract [tex]50[/tex] from both sides of the equation to isolate [tex]x[/tex])

[tex]2x=130[/tex] (Simplify)

[tex]\frac{2x}{2}=\frac{130}{2}[/tex] (Divide both sides of the equation by [tex]2[/tex] to get rid of [tex]x[/tex]'s coefficient)

[tex]x=65[/tex]

Therefore, [tex]x+50=65+50=115[/tex], so our final answer is that the angles measure [tex]65[/tex]° and [tex]115[/tex]°. Hope this helps!

The Barbers are keeping track of their family energy costs. It costs the Barber $0.16 per week to run their dishwasher. How much will it cost them to run their dishwasher for 52 weeks

Answers

Answer:

$8.32

Step-by-step explanation:

You just multiply 0.16 with 52

list all 10 possible SRSs of size n = 2, calculate the proportion of females for each sample​

Answers

Answer:

10

Step-by-step explanation:

since i helped can i have brainlst please that would be greatly apericated

we have a total of 10 choices,

while we need SRS of size 2 only,

We know that,

A combination helps us to determine the number of possible arrangements that can be made through a set of data provided where the order of the selection does not matter.

where,

n is the number of choices,

r is the number of selection.

All 10 possible SRSs of size n = 2, are:

1.  Abigail & Bobby

2. Abigail & Carlos

3.  Abigail & DeAnna

4.  Abigail & Emily

5.  Bobby & Carlos

6.  Bobby & DeAnna

7.  Bobby & Emily

8.  Carlos & DeAnna

9.  Carlos & Emily

10.  DeAnna & Emily

To know more visit:

https://brainly.com/question/25351212

According to records at the guidance office, the mean GPA of all juniors is 3.45 and the mean GPA of all seniors is 3.62. Which of the following statements is true?

A. 3.45 is a statistic and 3.62 is a statistic.

B. 3.45 is a statistic and 3.62 is a parameter.

C. 3.45 is a parameter and 3.62 is a statistic.

D.3.45 is a parameter and 3.62 is a parameter.

Answers

Answer:

d, they are both parameters because they mean allllll the juniors and seniors, not just pulling out a few and taking a sample

Step-by-step explanation:

Answer:

The answer is "D".

Step-by-step explanation:

3.45 is a parameter and 3.62 is a parameter.

Which numbers below represents a repeating decimal? Check all the boxes that apply.*
-2/3
-3/5
3/10
11/20

Answers

Answer:

-2/3

Step-by-step explanation:

-2/3= -.066666667

-3/5= -0.6

3/10= 0.3

11/20= 0.55

–15 = a/5
A. a = –3
B. a = –20
C. a = –10
D. a = –75

Answers

Answer: a = -75

Step-by-step explanation:

i just multiplied both sides by 5, in order to get "a" by itself.

-75 = a

then, just for kicks, we switch it around so that the variable is in front.

a = -75

Round off 3.447 g to the nearest 1/100 g
pls help

Answers

Answer: 3.55 g

Step-by-step explanation: 3.447 g rounded to the nearest 1/100 g is 3.55 g.

Hint: nearest 1/100 g also means nearest hundredth!

Write an Equation using the following arithmetic sequence: 5, _____, ______, 32

Answers

Answer:

The sequence is:

5, 14, 23, 32

Step-by-step explanation:

We know that an Arithmetic sequence with a₁ and the commo difference 'd' has the nth term such as:

aₙ = a₁ + (n-1)d

Given the arithmetic sequence

5, _____, ______, 32

here:

a₁ = 5

n = 4

aₙ

so substituting a₁ = 5, n = 4 and aₙ = 32 in the nth term

aₙ = a₁ + (n-1)d

32 = 5 + (4-1)d

32 = 5 + 3d

3d = 32-5

3d = 27

divide both sides by 3

3d/3 = 27/3

d = 9

Therefore, the common difference: d = 9

Determining the 2nd term:

Using the formula

aₙ = a₁ + (n-1)d

substitute n = 2, a₁ = 5, d = 9

a₂ = 5 + (2-1)9

a₂ = 5 + 1(9)

a₂ = 5 + 9

a₂ = 14

Determining the 3rd term:

Using the formula

aₙ = a₁ + (n-1)d

substitute n = 3, a₁ = 5, d = 9

a₃ = 5 + (3-1)9

a₃ = 5 + 2(9)

a₃ = 5 + 18

a₃ = 23

Thus, the sequence becomes:

5, 14, 23, 32

Solve |x – 4| + 6 = 17.
A. X= 15 and x = -15
B. x= -15 and x= 7
C. x = 15 and x= -7
D. x = -15 and x = -7

Answers

Answer:

[tex]\mathrm{C)\:}x=15,\:-7[/tex]

Step-by-step explanation:

For [tex]|a-b|=c[/tex], there are two possible cases:

[tex]\begin{cases}a-b=c\\a-b=-c\\\end{cases}[/tex]

Solving for both cases, we get:

[tex]\begin{cases}x-4+6=17, \:x+2=17, \: \fbox{$x=15$}\\-(x-4)+6=17,\: -x+10=17, \: -x=7, \:, \fbox{$x=-7$}\\\end{cases}[/tex]

Prove algebraically that the recurring decimal 0.472 can be written as
17
36

Answers

Given:

The recurring decimal is [tex]0.47\overline{2}[/tex].

To prove:

Algebraically that the recurring decimal [tex]0.47\overline{2}[/tex] can be written as [tex]\dfrac{17}{36}[/tex].

Proof:

Let,

[tex]x=0.47\overline{2}[/tex]

[tex]x=0.472222...[/tex]

Multiply both sides by 100.

[tex]100x=47.2222...[/tex]     ...(i)

Multiply both sides by 10.

[tex]1000x=472.2222...[/tex]        ...(ii)

Subtract (i) from (ii).

[tex]1000x-100x=472.2222...-47.2222...[/tex]

[tex]900x=425[/tex]

Divide both sides by 900.

[tex]x=\dfrac{425}{900}[/tex]

[tex]x=\dfrac{17}{36}[/tex]

So, [tex]0.47\overline{2}=\dfrac{17}{36}[/tex].

Hence proved.

In Toronto, Canada, one liter of gasoline costs. $0.74$. There are 3.8 liters in one gallon. How much does one gallon of gas cost in Toronto? Round your answer to he nearest hundredths.

Answers

Answer:

$2.81

Step-by-step explanation:

From the above question:

1 liter of gasoline = $0.74

There are 3.8 liters in one gallon.

Hence:

1 liter of gasoline = $0.74

3.8 liters of gasoline = x

Cross Multiply

x = 3.8 × $0.74

x = $2.812

Approximately to the nearest hundredth = $2.81

Therefore , the cost of one gallon of gas(3.8 liters) in Toronto is $2.81

What is the answer?? Please

Answers

9514 1404 393

Answer:

  not similar

Step-by-step explanation:

"Triangle" DPS cannot exist. Sides DP and DS are not long enough.

__

Side ratios are not the same. In the top triangle, the length ratios are ...

  14 : 16 : 19

In the bottom triangle, the length ratios are ...

  7 : 8 : 19   (such a triangle cannot exist)

Since the ratios are not the same, the triangles are not similar.

use the gcf and the distributive property to find the sum of 26 + 39

Answers

Answer:= 13

Step-by-step explanation:

Write the ratio in simplest form.



The ratio of green beads to blue beads is ???

Answers

3:6 but if u simplify it it will become

1:2

Just need help 1-3 because it’s not easy

Answers

1 Yes
2 No
3 No
Hope this helps

. What number replaces ☺ to make the sentence true? 1 + 3 + 4 + 6 + 6 + 8 + 9 + 11 = 4 × ☺.

Answers

Answer:

12

Step-by-step explanation:

1+3+4+6+6+8+9+11=48. Knowing this, we can now figure out the other side of the equation. To make both equations true, both sides must equal 48.

To this, simply divide 48 by 4.

48/4=12

Thus, your answer is 12

Answer: 12

Step-by-step explanation:

1+3+4+6+6+8+9+11 is 48 (you can double check)

48=4*X (calling x as the smiley).

Divide 4 by each side.

12=X

Find the area of the rectangle with: l=3m50cm b=2m20cm​

Answers

You have to convert cm to m or m to cm (all if them need to have the same unit)
50cm= 0.5m
20cm= 0.2m

l=3+0.5= 3.5m
b=2+0.2= 2.2m

A=(3.5)(2.2)= 7.7m^2

I NEED HELP PLEASE!! Does anyone understand this??

Answers

Answer: 44.4

Step-by-step explanation:

We are asked to find angle V, so we are going to use our trig ratios to explain this one. They have given us the side opposite of angle v and the hypotunse. angle v. so we are going to be using sine. . SOHCAHTOA.  

First, let use the ratio for sine [tex]\frac{opp}{hypo\\}[/tex] which equal to [tex]\frac{7}{10}[/tex]

then we are to take the arcsine or the sine inverse because we are trying to the angle measure not side length. ([tex]sin^{-1}[/tex](7/10) which gives us 44.4

A soccer field is 120 yards long. Han measures the length of the field using a 30-foot-long tape measure and gets a measurement of 358 feet, 10 inches. What is the amount of the error?

Answers

Answer:

Error = 1.167 feet

Percentage error = 0.3242%

Step-by-step explanation:

The original length of the soccer field = 120 yards long

Converting to feet

1 yard = 3 feet

120 yards = x

Cross Multiply

x = 120 × 3 feet

x = 360 feet

Measured length:

Han measures the length of the field using a 30-foot-long tape measure and gets a measurement of 358 feet, 10 inches.

We convert 10 inches to feet

1 inch = 0.0833 feet

10 inches = x feet

Cross Multiply

x = 10 × 0.0833 feet

x = 0.833 feet

The measured length = 358 feet + 0.833 feet

= 358.833 feet

The Error is calculated as:

|Measured length - Original Length)

= 360 feet - 358.833 feet

= 1.167 feet

Percentage Error

= Error/Original Length × 100

= 1.167/360 × 100

= 0.3241666667%

Approximately = 0.3242%

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