What is length of Ef?

What Is Length Of Ef?

Answers

Answer 1
Choice e) radical 300
Answer 2

Step-by-step explanation:

Using Pythagoras ;

[tex]20=\sqrt{10^{2}+x^{2} } \\20^{2}=10^{2}+ x^{2}\\400 = 100 +x^{2} \\300 = x^{2} \\x =\sqrt{300}[/tex]

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Related Questions

Please quickly answer will mark brainliest (100 points) also say answer in text

Answers

Step-by-step explanation:

square root of 196 is 14

square root of 169 13

square root of 121 is 11

square root of 225 is 15

square root of 144 is 12

square root of 100 is 10

Hunter has a quarters and y dimes, having at least 18 coins worth at most
combined. A minimum of 4 of the coins are quarters and a minimum of 12
coins are dimes. Solve this system of inequalities graphically and determint
possible solution.

Answers

Answer:The number of nickles is 6  

The number of dims is 12 .

Step-by-step explanation:

Given as :

Sum of total number of dims and nickels coins = 18

The value of total combination = $1.50

Let The total number of dims = d

Let The total number of nickels = n

1 nickles = $0.05

1 dims = $0.1

According to question

Total number of dims and nickels coins = number of dims + number of nickels

Or, d + n = 18            .........1

And

$0.1 ×d + $0.05 ×n = $1.50

Or, 0.1 d + 0.05 n = 1.50            .........2

Now, Solving eq 1 an eq 2

0.1 × (d + n) - (0.1 d + 0.05 n) = 0.1 × 18 - 1.50

Or, (0.1 d - 0.1 d) + (0.1 n - 0.05 n) = 1.8 - 1.50

Or, 0 + 0.05 n = 0.3

Or, 0.05 n = 0.3

∴  n =

i.e n = 6

So, The number of nickles = n = 6

Put the value of n int eq 1

∵ d + n = 18

Or, d = 18 - n

Or, d = 18 - 6

i.e d = 12

So, The number of dims = d = 12

Hence, The number of nickles is 6 and the number of dims is 12 .

Step-by-step explanation:

What do you add to 3 7/8 to make 5

Answers

Step-by-step explanation:

we will add 3+37=40

40/8=5

mark me brainlist plz

Answer:

You have to add a certain amount of a number to 3 7/8 to make five. Or the easy way, 5 - 3 7/8 = 1 1/8

Step-by-step explanation:

If you want can you make me brainlyist?

Also, I hope this helped!

Select the correct answer.
24c^6 - 32c^4
Which expression is equivalent to
8c^3 ? Assume that the denominator does not equal zero.

Answers

Answer:

B: [tex]c(3c^2-4)[/tex]

Step-by-step explanation:

1. Substitute [tex]1[/tex] for c: [tex](24^6-32^4)/(8^3)[/tex]

2. Solve substitution: [tex]-1[/tex]

3. Compare [tex]-1[/tex] to calculated answers when [tex]c=1[/tex]

4. [tex]c(3c^2-4)[/tex] when [tex]c=1[/tex] is [tex]-1[/tex]

Janice Went to five different stores in the mall, she spent an average of $30 at each store. After visiting just the first four stores she had spent $100, how much was she have spent at the last store based on her overall average?

A.$25
B.$30
C.$50
D.$70

Answers

Based on Janice average, she spent $50 at the last store.

Let a, b, c, d, e represent the money spent on the five stores respectively.

Since she spent an average of $30 at each store, hence:

(a + b + c + d + e) / 5 = 30

(a + b + c + d + e) = 150

She spent $100 on the first four stores, hence:

a + b + c + d = 100

(a + b + c + d + e) = 150

100 + e = 150

e = 50

Hence based on Janice average, she spent $50 at the last store.

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pls help me i need to finish this

Answers

Answer:

-1 = -2

0 = 0

1 = 2

2 = 4

Step-by-step explanation:

-1 x 2 = -2

0 x 2 = 0

1 x 2 = 2

2 x 2 = 4

Since the equation says y = 2x, you must multiply every x factor by 2 to get your answer.

-kiniwih426

Sorry its blurry but please hurry!!!!!!! Answer 9 and 10 please!!!!

Answers

Answer:

9. 31/2 or 15.5( I think that's the answer)

10. B

Step-by-step explanation:

A car dealer will sell you a used car for $6,898 with $798 down and payments of $169.51 per month for 48 months. What is
the APR? (Round your answer to the nearest tenth of a percent.)
%

Answers

Answer:

d

Step-by-step explanalime boba no other

4
Calculate the area of the shaded region. Round to the nearest tenth, as needed.
59
1.3 m 1.7 m

Answers

Answer:

0.9m²

Step-by-step explanation:

Find the area of the larger circle, the radius is 0.85m because the diameter is double this - 1.7m:

a = πr² = π × (0.85)² = 289/400π

Find the area of the smaller circle, the radius is 0.65 because the diameter is double this - 1.3m:

a = πr² = π × (0.65)² = 169/400π

Subtract the two area:

289/400π - 169/400π = 120/400π = 3/10π or 0.942477.. ≈ 0.9m²

Please include step by step instruction, so I can learn how to solve the problem. Thank you

Answers

9514 1404 393

Answer:

  A, C

Step-by-step explanation:

First of all, recognize that any basic arithmetic operation between a rational number and an irrational number will have an irrational result. That means, you can eliminate any answer choices that involve an irrational number.

Fractions and mixed numbers involving integers are always rational, so you only need to look at the radicals. You know 9 is 3×3, so is a perfect square, and √9 = 3 is rational. You know 5 is not a perfect square, so √5 is irrational.

Considering the above, any expression involving √5 will have an irrational result. That means you can eliminate choices B and D.

  choices A and C will result in a rational number

_____

Additional comment

  A = 6.8 +0.75 = 7.55 (rational)

  C = 6.8 × 0.75 = 5.100 (rational)

Classify each term in the expression 3+6ab+c as a constant term or a variable term.

Answers

Answer: 3 is constant term, 6ab is variable term, and C is variable term

Answer:

3: Constant term, 6ab: Variable term, C: Variable term

Step-by-step explanation:

STATE THE MODULES THAT ARE INCLUDED WHEN LEARNING CALCULUS I.

Answers

Answer:

Calculus is the branch of mathematics studying the rate of change of quantities (which can be interpreted as slopes of curves) and the length, area, and volume of objects. The chain rule is a formula for the derivative of the composition of two functions in terms of their derivatives.

When converted to a household measurement, 9 kilograms is approximately equal to a

Answers

Abt 317.4 oz or 19.4 lb

Answer:

D) 19.8 lbs

Explanation:

1kg in household measurement is equal to 35.274 ounces. 35.274*9=317.466 ounces.

1kg is also equal to 2.205 lbs. 9*2.205=19.8416

9 kg is also equal to 9000 grams, but grams are not a part of the household measurement system

a) 9000 grams. b) 9000 ounces. c) 19.8 ounces. d) 19.8 pounds.

This leaves us with 19.8 lbs

ANSWER FAST PLEASE identifying difrent slopes consider the line that passes through each pair of given points and decide what type of slope the line was

Answers

Answer:

(2/4) and (5,1) negative slope

(-7,8)and(-7,0) undefined slope

(3,5) and (-1,2) positive slope

(6,-3) and (-4,-3) zero slope

Step-by-step explanation:

took the assignment a while back <3 not sure if those are the ones that were provided in ur edge tho because there was no picture provided on this question

Solve for y.
y-x= 11
x= 12
y=

Answers

Answer:

y=23

Step-by-step explanation:

y-x=11

x=12

y=x+11

y=12+11

y=23

758 rounded of to the nearest hundred

Answers

Answer:

800

Step-by-step explanation:

Hope this helps

Answer:

800, if it's higher than 50 you can round it to the next hundred

Solve for c.

-2.2 - 0.1c = -1.9

Answer: c = _____

Answers

Answer:

c = -3

Step-by-step explanation:

-2.2 - 0.1c = -1.9

-0.1c = 0.3

c = -3

Hopefully this helps!

Brainliest please?

All of the following are equivalent except:
4%
04
1/25

Answers

4 is not equivalent to 4% or 1/25

write an equivalent expression for x^4 over 4

help
please

Answers

Answer:

1/4 · x⁴

Step-by-step explanation:

PLEASE HELP!!! i don’t know the answer and it’s due tmr!!

Answers

look at the image of the graph

Above answer is right.

solve pls brainliest

Answers

Answer:

1(5/8)

step-by-step:

divide the numerator (top number) by the denominator (bottom number)

write whole number off to the left and put the remainder over the denominator to the right

help with 5a, to find the values of x​

Answers

not sure what it is but i love ur handwriting- u got this though

Darryl wants to add enough water to 8 gallons of a 10% bleach solution to make a 5% bleach solution. Which equation can he use to find x, the number of gallons of water he should add?
[tex]1.( \frac{0.8}{8 + x} )( \frac{5}{100} = 1 \\ 2. \frac{0.8}{8 + x} = \frac{5}{100} \\ 3. \frac{0.8}{8 + x} = \frac{100}{5} \\ 4. \frac{0.8}{8 + x} \div \frac{5}{100} = 1[/tex]

Answers

Answer:

2) 0.8/8+x=5/100

Step-by-step explanation:

Answer:

letter B is the correct answer!

Help me please please please!!!!!!!!!

Answers

Answer:

1 1/5

Step-by-step explanation:

3/10 + 9/10

The denominator is the same so we can add the numerators

12/10

Rewriting

10/10 + 2/10

1 2/10

Simplify the fraction

1 1/5

Answer:

1.2 would be the decimal form to answer and in the fraction form it would be

6/5 or in a mixed number fraction 1 1/5

So 1 1/5 is your answer

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30 POINTS easy question
Find the measure of the exterior angle




The measure of the exterior angle of the triangle is
angle of the triangle is
º.

Answers

Answer:

9

Step-by-step explanation:

The exterior angle is equal to the sum of the 2 opposite interior angles, therefore:

9x + 9 = 45 × 5x

4x = 36

x = 9

9


9x +9 = 45+5x
4x = 36
x =9

a. Exactly 117.125 b. Correct to 2 significant figures c. Correct to 2 decimal places d. In standard form ​

Answers

Answer:

b) 11

c)117.12

1.1×10^2

Those are my answer that try

-79=7w+3(4w-1) all steps please and quick

Answers

step 1:
3(4w-1)= 12w-3

step 2:
7w+12w-3
=19w-3

step 3:
-79=19w-3 (so add 3 to -79)

step 4:
-76=19w (just divide by 19 to get w)

step 5:
-4=w

Hi please help me i need it, thanks

Answers

Answer:

perimeter: 20.1

area: 22.1

Step-by-step explanation:

Answer:

The formula to find the are of a parallelogram is = base x height

so the base is 3 1/4 x the height is 6. so now it will be

3 1/4 x 6

you now multiply it to get the area.

So the area I am getting for this is 16 1/2 cm2.

It might be wrong but there you go.

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Principal: 300
Annual Rate: 3%
Time: 4 Years
Interest Earned: ?????
New Balance: ?????

!!!!!SOMEONE PLEASE HELP ME FIGURE OUT INTEREST EARNED AND NEW BALANCE!!!!

Answers

Answer:

Step-by-step explanation:

HI there!

From the question;

Principal (p) = 300

Annual rate (r) = 3%

Time (t) = 4 yrs

Now;

Interest (I) = [tex]\frac{p*t*r}{100}[/tex]

             I = [tex]\frac{300*4*3}{100}[/tex]

             I = [tex]\frac{3600}{100}[/tex]

Therefore the interest earned is 36.

Again;

New balance (A) = principal + interest

                            = 300+36

Therefore, the new balance is 336.

Hope it helps!

help me for brainliest

Answers

it’s A

0.2 recurring
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