Julia leans a 18-foot ladder against a wall so that it forms an angle of 68° with the
ground. How high up the wall does the ladder reach? Round your answer to the
nearest hundredth of a foot if necessary.

Usando algebra, veremos que cada estudiante debe aportar $5.00.

En el caso en el que hay 25 estudiantes, cada uno aporta $4.00, entonces la cantidad total que se colecta es:

25*$4.00 = $100

Ahora, en el caso de que hay 20 estudiantes, cada uno aportara una cantidad x, de tal forma que:

20*x = $100

Debemos resolver la ecuación de arriba para x:

x = $100/20 = $5.00

Es decir cada estudiante debe aportar $5.00

Sí quiero aprender más sobre algebra, puedes leer:

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Answer:

g = 5

Step-by-step explanation:

Combine like terms on the left side.

9g - g + 4g -8g = 4g

4g - 2 = 18

Add 2 to both sides.

4g = 20

Divide both sides by 4.

g = 5

Answer:

Step-by-step explanation:

Raising both sides to the power of 10, we get [tex]x^{2}+x+14=10^{3x-5}[/tex].

Answer:

2.3

Step-by-step explanation:

because its asking you what the opposite of -2.3 is so it would be a positive instead of a negative  

Answer:

The answer would be 2.3

The opposite of a negative is a positive, and vice versa

Step-by-step explanation:

Hope this helps

Answer:

1 kg, 0.8 kg, 1.6 kg

Step-by-step explanation:

Add up each part in the ratio

5 + 4 + 8 = 17

Divide the mass of the alloy by 17

3.4/17 = 0.2

To find out how much of each metal is in the alloy multiply 0.2kg by how many parts of it are in the alloy.

Nickel - 5 parts

0.2 x 5 = 1 kg

Zinc - 4 parts

0.2 x 4 = 0.8 kg

Copper - 8 parts

0.2 x 8 = 1.6 kg

Answer:

Step-by-step explanation:

5x+4x+8x=3.4

17x=3.4

x=0.2

Nickel 1 kg

Zinc 0.8 kg

Copper 1.6 kg

Hope this helped :D

Answer:

71

Step-by-step explanation:

I think because it's not at 70 and it's not at 80 so 71 because it's between 70 and 80

Answer:

Plan A / 8 songs for 9.60

Step-by-step explanation:

Find out how much each song costs depending on the plan.

9.60/8 = 1.2 and 12.50/10 is 1.25 so Plan A offers the lowest rate for songs.

Answer:

17x^5 + 5x³ + 4x - 7

Degree of polynomial: 5

Step-by-step explanation:

First put the polynomial is descending order from highest exponent to lowest.

Original: 4x + 5x³ + 17x^5 - 7

New: 17x^5 + 5x³ + 4x - 7

The highest degree is 5 because that's the highest exponent. If it were m²x³ + 7x. The highest degree would be 5 because the exponents equal 5.

I hope this helps!

23.40 because 39.75 minus 16.35 equals 23.40 Hope this helps

Answer:

2

Step-by-step explanation:

[tex]x + 17 = - 2x + 23 \\ \\ x + 2x = 23 - 17 \\ \\ 3x = 6 \\ \\ x = \frac{6}{3} \\ \\ x = 2[/tex]

Answer:

x = 2

Step-by-step explanation:

First, we will move all the xs to one side and everything else to the other side.

x + 17 = -2x + 23

+2x       +2x

-17         -17

This gives us:

x + 2x = 23-17

Then we can just combine like terms:

3x = 6

And divide both sides by three:

x = 2

Answer:

7x+9y

Step-by-step explanation:

5x-x

=4x

4x+3x

=7x

7y+2y

=9y

Answer:X=-1/2

Step-by-step explanation:

Answer:

Hello

49 can be expressed as the sum of first 7 odd numbers

1+3+5+7+9+11+13=49

Hope it helps You..

Step-by-step explanation:

Answer:

area = (a + b)² = a² + 2ab + b²

Step-by-step explanation:

let side length = a + b

area of a square = side length × side length

⇒ area = (a + b)²

            = (a + b)(a + b)

            = a² + ab + ab + b²

            = a² + 2ab + b²

The fully expanded expression for the area of a square with sides of length a + b is a² + 2ab + b².

The area of a square is given by the formula: Area = side × side.

In this case, the side of the square is a + b.

Therefore, the expression for the area of the square is:

Area = (a + b) × (a + b).

To fully expand this expression using the distributive property, we'll apply the FOIL method (First, Outer, Inner, Last):

Area = a(a + b) + b(a + b)

= a² + ab + ab + b²

= a² + 2ab + b².

So, the fully expanded expression for the area of a square with sides of length a + b is a² + 2ab + b².

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Answer:

Solve 2 1/3 divided by 3 1/2.

Step-by-step explanation:

Answer:

15000mm³.

Step-by-step explanation:

Solution,

According to the question,

15cm³ → mm³

Then ,

15 × 1000 ( 1000 mm³ = cm³ )

= 15000mm³.

Answer:

it vertically compressed it by 2

Step-by-step explanation:

I attached a pic of the graph so u can see ! blue is the parent function and red is the transformation and u can see the red line gets smaller !! i use the app wabbit which is a calculator app and u can only get it on android just added that just incase u wanted to have it for urself !

Answer:

pretty hard but its worth it

Step-by-step explanation:

Answer:

[tex]\sqrt[3]{6}[/tex]≈1.817

Step-by-step explanation:

I used my calculator

type 3 and then [tex]\sqrt[x]{}[/tex] 6

Answer:

Step-by-step explanation:

since you gave no values for both T and S, this is impossible to solve.

figure out what the difference is between the 2 numbers of T and S, then divide that by 200. that should give you the answer.

Answer:

You multiply the denominator and the whole number then add the numerator.

Step-by-step explanation:

Example: [tex]3\frac{2}{4}[/tex]

You multiply 3 and 4

3*4=12

Then add the numerator

12+2=14

The final answer would be

[tex]\frac{14}{4}[/tex]

Answer:

3

Step-by-step explanation:

Look in picture for information;

~Learn with Lenvy~

Hey there!

Please remember that the ordered pair (0,0) is also called the origin.

Its x-coordinate is 0, and its y-coordinate is 0.

If a line intersects a point (0, 0) then it basically intersects the origin.

Hope everything is clear.

Let me know if you have any questions!

#LearningDoesn'tEnd

:-)

Answer:

17 radical din 2

Step-by-step explanation:

dami coroana te rog

Answer:

Figure 2 and Figure 1 are scaled copies

Figure 2 is twice as High and Wide

Figure 4 is 1/4 as tall.

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

AB = BC GIVEN

X+5=2X-11

X=16

HENCE AB=X+5=16

Answer:

pretty sure its 10

Step-by-step explanation:

First you wanna know 2 negatives equal a positive. So all you do is multiply the number 5×2=10

Thank you ☺️☺️