Anyone knows the best learning websites for like secondary/elementary school?​

Answers

Answer 1

khan academy

khan academy is a site used for students to learn


Related Questions

PLZ ANSWER DIS IS DUE IN 30 MIN Evaluate the expression, mn2, when m = 13 and n = = 12​

Answers

Answer:

166

Step-by-step explanation:

m =13

n = 12

m x n

= 13 x 12

= 166

13 x 12, which equals 156. Explanation: All you have to do is plug what M and N equal into the equation provided, which is m x n.

Simplify (12+3i)−(−5+2i)

Answers

Answer:

17+5i

Step-by-step explanation:

add the like terms

double negative equals positive

;)

Answer:

17+i

Step-by-step explanation:

-2x -3 for x = -3

( Evaluate the following algebraic expression )

Answers

Answer:

well its -2*-3-3 so

-2*-3 is 6-3 is 3

Step-by-step explanation:

Find the slope of a line parallel to the line whose equation is y-4=7(x+2).

Answers

Answer:

m'=7

Step-by-step explanation:

they are parallel to each other so if slope of 1st line be "m" and 2nd line as "m' ", then we have:

m = m'

y-4=7x+14

y=7x+18

y=mx+h

So m = 7

& m' = 7

Someone Answer this for me pls

Answers

Answer:

It's equilateral. Equilateral triangles are three equal-sided polygons. Remember that. It helps.

Find the slope of the line through the given points

Answers

m=4/1
slope is rise over run
-3+(6)=3
7-(24)=-17
so 24/6=8/2=4/1
so 4/1 is the slope

PLEASE HELP WILL GIVE FULL PONITS! 3. Using the known angle, what side is known? What side is unknown? Use opposite, adjacent, or hypotenuse in your answer. (2 points)
Known side: ____________________
Unknown side: ___________________________
4. What trigonometric ratio would you use to find the distance from the base of the tower to your keys? Identify your choice, and then calculate the distance. (4 points: 1 point for the ratio, 2 points for shown work, 1 point for the answer)
Trigonometric ratio (name): ___________________________
Calculation (Show your work):
5. While you're at the top of the tower, you see an ant walking along the edge of the building. If the ant were to walk straight down the side of the tower until it reached the ground, how far would the ant travel? Which trigonometric ratio would you use to find this distance? Use the ratio to find the measurement. (4 points: 1 point for the method, 2 points for shown work, 1 point for the answer)
6. Confirm that your answer to question 5 is correct using the Pythagorean Theorem instead of trig ratios. (3 points)

Answers

Answer:

The trigonometric ratio that I would use to find the distance from the base of the tower to the keys is the tangent; tan (86°) = height / distance.

Step-by-step explanation:

You can draw a right triangle with angle 86°, opposite leg equal to the height (50 meter) and adjacent leg equal to the distance from the base of the tower to the keys: tan (86°) = 50 m / x

=> x = 50 m / tan(86°)

x = 50 m / 14.30 = 0.98 m

If the length of the line segment CD is 65% of the length of the line segment AB, what is the length of line segment CD? (AB is 13in)

Answers

Answer:

8.45

Step-by-step explanation

Convert 65% in decimal form

0.65 x 13 = 8.45

A house has increased in value by 3% each year. It was worth £150000 4 years ago. How much is it worth now? Give your answer to a sensible degree of accuracy. morto​

Answers

Answer: 350000

Step-by-step explanation: Hope this helps :) (if wrong please make sure next time add answer that can be picked from it better or if theres no answers maybe give some more detail?)

#3 A Firefighter needs to reach window that is 35 feet up. If the fire
department has a 37 foot ladder how far away from the building should
they put the bottom of the ladder?

Answers

Answer:

2 feet away from the building

Step-by-step explanation:

Hope this helps!

whats the answer to g^-1(1)

Answers

Answer:

g^-1

Step-by-step explanation:

g^-1 times 1

is g^-1

Answer:

1/g

Step-by-step explanation:

g^-1(1)

= g^(-1 * 1)

= g^(-1)

= 1/g

Hence, g^-1(1) is 1/g

Hope this helps and be sure to have a wonderful time ahead at Brainly! :D

Answer ASAP please<3​

Answers

Step-by-step explanation:

So if you multiply both the numerator and denominator by the same number, you get the initial number. Your goal here is to get the same denominator so that you can solve the problem easily! hope it helped!

8/12-3/12=5/12 is correct in order to keep a common denominator :)

Determine the slope of the line passing through (4,-2) and (7,10)?????

Answers

Answer: 4

Step-by-step explanation:

(4,-2) will be point 1, (7,10) will be point 2. The order doesn't matter.

slope = y2-y1 / x2 - x1

slope = 10 - (-2) / 7 - 4

slope = 12 / 3

slope = 4

The slope of the line that passing through (4, -2) and (7, 10) is 11/3.

What is an equation of a line?

The equation of a line is given by:

y = mx + c

where m is the slope of the line and c is the y-intercept.

Example:

The slope of the line y = 2x + 3 is 2.

The slope of a line that passes through (1, 2) and (2, 3) is 1.

We have,

(4, -1) = (a, b) and (7, 10) = (c, d)

Slope:

= (d - b) / (c - a)

= (10 + 1) / (7 - 4)

= 11 / 3

Thus,

The slope is 11/3.

Learn more about equation of a line here:

https://brainly.com/question/23087740

#SPJ2

what is the distance between (5,8) and (2,4) by using distance formula

Answers

Answer:

Distance = 5

Step-by-step explanation:

D= sqrt (x1-x2)^2 + (y1-y2)^2

(5-2)^2 + (8-4)^2=3^2 + 4 ^2 = 9 +16 = 25

Sqrt of 25 = 5

Distance = 5

Hope this helps

Answer:

d=3.605551

Step-by-step explanation:

d=(8−5)2+(4−2)2−−−−−−−−−−−−−−−√

d=(3)2+(2)2−−−−−−−−−√

d=9+4−−−−√

d=13−−√

d=3.605551

What is the domain of F

Answers

Answer:

-5 ≤x≤6

[-5,6]

Step-by-step explanation:

The domain is the values that the input takes

x goes from -5 (inclusive) to 6 (inclusive)

-5 ≤x≤6

[-5,6]

Answer:

[-5, 6]

Step-by-step explanation:

    The domain of a function is the list of x values. Since the endpoints are shaded, that means those x values are included as well. Therefore, the domain of f is [-5, 6].

1/x + 1/3x = 4 help help pls thank you

Answers

Times left fraction by 3
3/3x
So now it is 3/3x +1/3x = 4
Add the fractions
4/3x=4
Times by 3x
4=12x
x=12/4=3/2

​​​​​​​If K = F( A + B ) , find “ A ” if F = 2 , B = 3 , K = 10

Answers

Answer:

The value of A is 2

Step-by-step explanation:

F = 2 , B = 3 , K = 10

K = F( A + B )

10 = 2(A + 3)

10 = 2A + 6

Now, Subtract 6 from each side we get,

10 - 6 = 2A + 6 - 6

4 = 2A

2A = 4

Now, divide both side by 2 we get,

2A/2 = 4/2

A = 2

Thus, The value of A is 2

FOR VERIFICATION ONLY :-

K = F( A + B )

10 = 2(2 + 3)

10 = 2(5)

10 = 10

L.H.S = R.H.S

Hence Proved!

-TheUnknownScientist 72

¼ x = 12 i need help plz thanks

Answers

Answer:

48

Step-by-step explanation:

1/4 x = 12

x = 4*12

x=48

HELP ME PLZ

Part A: The sun produces 3.9 ⋅ 1033 ergs of radiant energy per second. How many ergs of radiant energy does the sun produce in 3.25 ⋅ 103 seconds?

Part B: Which is the more reasonable measurement of the distance between the tracks on a railroad:
1.435 ⋅ 10−3 mm or 1.435 ⋅ 103 mm? Justify your answer.

Answers

Answer:

salamat po sa

points.

pa

Step-by-step explanation:

branlest

answer

po

are 16/72 and 18/81 equivalent rational numbers​

Answers

Answer:

yes

Step-by-step explanation:

[tex]\frac{16}{72}[/tex] ( divide numerator/ denominator by 8, the LCM of 16 and 72 )

= [tex]\frac{2}{9}[/tex]

[tex]\frac{18}{81}[/tex] (divide numerator/ denominator by 9 the LCM of 18 and 81 )

= [tex]\frac{2}{9}[/tex]

Both rational numbers simplify to [tex]\frac{2}{9}[/tex] and are equivalent

Choose the equation that represents the graph shown

Answers

Answer:

y = |x| + 5

Step-by-step explanation:

Calculate the points with x = -4 to 4 and match the plots.  (Attached)

if a/3=b/2, what are the following ratios?
a+b/b

Answers

Answer:

1

a+1

es posible q hayan doble respuesta

Step-by-step explanation:

Pasos  

a+b/b

Divide b entre b para obtener 1.

da

d

(a+1)

La derivada de un polinomio es la suma de las derivadas de sus términos. La derivada de cualquier término constante es 0. La derivada de ax  

n

 es nax  

n−1

.

a  

1−1

 

Resta 1 de 1.

a  

0

 

Para cualquier término t excepto 0, t  

0

=1.

1

a+b/b

Divide b entre b para obtener 1.

a+1

At the beginning of a population study, a city had 390,000 people. Each year since, the population has grown by 1.1%.
Let t be the number of years since start of the study. Let y be the city's population.
Write an exponential function showing the relationship between y and t.

Answers

Answer:

t=number of years since start of the study.

y=city´s population.

first year:

y=390,000+0.073(390,000)=390,000(1+0.073)    (=418470)

Second year:

y=(390,000(1+0.073)  + 0.073(390,000(1+0.073) =

=390,000(1+0.073) (1+0.073)

=390,000(1+0.073)²

 (≈449,018.31)

Third year: if you calculate it you would have:

y=390,000(1+0.073)³

Fourth year: if you compute it you would have:

y=390,000 (1+0.073)⁴

t th year:

y=390,000(1+0.073)^t

Answer: y=390,000(1+0.073)^t

Step-by-step explanation:

!!will mark BRAINLIEST if all are anwsered!!

Answers

Answer:

8) 31.4 ft

9) Scalene Triangle , and a right Triangle

10) 36 [tex]ft^{2}[/tex]

11) 2

12) 4/5

Step-by-step explanation:

8) Find last length

12^2+6^2=x^2

x=[tex]\sqrt{180}[/tex]

13.4

Perimeter = 13.4+12+6 = 31.4 ft

9)

10) area = 1/2 b*h = 1/2*12*6 = 36 [tex]ft^{2}[/tex]

11) slope = rise /run = 2/1 = 2

12) 80% will be girls, therefore 80/100 = 4/5

What is the value of l 3 l?

Answers

Answer:

3

Step-by-step explanation:

Answer:

-3

I’m pretty sure this is correct because isn’t absolute value the opposite

A sporting goods company can ship
6 footballs in each carton. How many
cartons are needed to ship 75 footballs?

Answers

Answer:

12.5

Step-by-step explanation:

75 ÷ 6

write y+7 = 2/3 (4x-6) in standard form using integers

Answers

9514 1404 393

Answer:

  8x -3y = 33

Step-by-step explanation:

Multiply by 3 to eliminate the fraction. Then rearrange to standard form.

  y +7 = 2/3(4x -6) . . . . . . . given

  3(y +7) = 2(4x -6) . . . . . . . multiply by 3

  3y +21 = 8x -12 . . . . . . . . eliminate parentheses

  33 = 8x -3y . . . . . . . . . . add 12-3y to both sides

  8x -3y = 33 . . . . . . . . . swap sides to put into standard form

_____

Standard form has mutually prime integer coefficients, the leading one being positive.

What is the slope of this graph?
A-4
B 1/4
C-1/4
D 4

Answers

Answer:

The answer is D

Step-by-step explanation:

The line has 2 points: (-1;0) and (0;-4)

=> x1 = -1; x2 = 0 => x1 - x2 = -1 - 0 = -1

   y1 = 0; y2 = -4 => y1 - y2 = 0 - 4 = -4

=> slope = (y1 - y2)/(x1 - x2) = [tex]\frac{-4}{-1}[/tex] = 4 => D

What is 2x-3y=12 on a graph?

Answers

The graph for 2x-3y=12 is

solutions: ( x = 2 & x = -2 ) ​

Answers

hmmmmhmmmmmmmmmmmmmmmmmmmmmm

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