can u guys help me this is hard and i dont understand

Answer:

B

Step-by-step explanation:

Answer:

156 is the answer to this question

Answer:

$156

Step-by-step explanation:

Multiply: 520 times 30% (.3)

It would be .3 because to turn a percent to a decimal you need to move the decimal two times to the left.

(I would put a picture but I'm too lazy, lol)

Hope this helped!! :)

Stay safe and have a wonderful day/night!!!!!

Brainliest?!?!

Answer:

3.25x + 4 = 30

3.25x = 30-4

3.25x = 26

x= 26/3.25

x = 8 Games

She played 8 games

Answer:

x=6

Step-by-step explanation:

Answer:

Step-by-step explanation:

Solve the equation for x by finding a, b, and c of the quadratic then applying the quadratic formula x = 6 Double roots

Answer:

It means that when x = 3, y = 1, obviously when the first function expression takes 3, y = 1

Answer:

m = -2

b= -6

Step-by-step explanation:

Answer:

the gradient or slope I guess is -2

and the y intercept is -6

Step-by-step explanation:

[tex] {x}^{2} - 81 = (x + 9)(x - 9)[/tex]

Step-by-step explanation:

[tex] \underline{ \underline{ \text{Solution}}} : [/tex]

[tex] \text{1. \: First \: expression} : \tt{2 {x}^{4} - 6 {x}^{3} - 8 {x}^{2} }[/tex]

⤑ [tex] \tt{2 {x}^{2}( {x}^{2} - 3x - 4) }[/tex]

⤑ [tex] \tt{2 {x}^{2} \{ \: {x}^{2 } - \: (4 - 1)x - 4 \} }[/tex]

⤑ [tex] \tt{2 {x}^{2} \{ {x}^{2} - 4x + x - 4 \} }[/tex]

⤑ [tex] \tt{2 {x}^{2} \{ x(x - 4) + 1(x - 4) \} }[/tex]

⤑ [tex] \tt{2 {x}^{2} (x - 4)(x + 1)}[/tex]

[tex] \text{2. Second \: expression} : \tt{4 {x}^{3} - 4x }[/tex]

⤑ [tex] \tt{4x( {x}^{2} - 1)}[/tex]

⤑ [tex] \tt{4x(x + 1)(x - 1)}[/tex]

L.C.M = Common × Remaining

= ( x + 1 ) × ( x - 1 ) × ( x - 4 ) × 2x² × 4x

= 8x³ ( x + 1 ) ( x - 1 ) ( x - 4 )

[tex] \red{ \boxed{ \boxed{ \tt{Our \: final \: answer : \boxed{ \underline{ \tt \: 8 {x}^{3} (x + 1)(x - 1)(x - 4)}}}}}}[/tex]

Hope I helped !

Have a wonderful day / night !

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Answer:

C

Step-by-step explanation:

Answer:

Step-by-step explanation:

Assume the parabola is vertical.

y = a(x-0)^2 +7

y = ax^2 + 17

Plug in (1,-2) and solve for a

-2 = a1^2 + 17

a = -19

y = -19x^2 + 7

Answer:

1

Step-by-step explanation:

Rise/run

Answer:

-4/2

Step-by-step explanation:

es menor que -4 pero es mayor que -5

Answer:

48[tex]x^{7}[/tex]y

Step-by-step explanation:

The area (A) of a trapezoid is calculated as

A = [tex]\frac{1}{2}[/tex] h (b₁ + b₂ )

where h is the height and b₁, b₂ the parallel bases , then

A = [tex]\frac{1}{2}[/tex] × 4[tex]x^{5}[/tex] × (9x²y + 15x²y )

   = 2[tex]x^{5}[/tex] × 24x²y

   = 48[tex]x^{7}[/tex]y

The simplified expression for the area of the trapezium is 30[tex]x^7y[/tex] + 18[tex]x^7[/tex][tex]y[/tex].

A trapezium is a quadrilateral with four sides where two sides are parallel to each other.

We have,

Trapezium.

Height = 4[tex]x^5[/tex]

Parallel sides are 15x²y and 9x²y.

The area of the trapezium.

= 1/2 x h x ( sum of the parallel sides )

Now,

Area of the trapezium.

= 1/2 x 4[tex]x^5[/tex] x (15x²y + 9x²y)

= 2[tex]x^5[/tex] x (15x²y + 9x²y)

= 30[tex]x^7y[/tex] + 18[tex]x^7[/tex][tex]y[/tex]

Thus,

The area of the trapezium is 30[tex]x^7y[/tex] + 18[tex]x^7[/tex][tex]y[/tex].

Learn more about trapezium here:

https://brainly.com/question/22607187

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Answer:

The answer is below

Step-by-step explanation:

In a certain​ year, the amount A of garbage in pounds produced after t days by an average household is given by A = 7.5t.

Plot a graph for t > 0

how many days it will take to get 200 pounds of garbage.

Solution:

a) Let the time in days (t) be on the x axis and the amount of garbage (A) in pounds be on the y axis. Therefore:

At t = 0; A = 7.5(0) = 0

At t = 10; A = 7.5(10) = 75

The graph was plotted using the geogebra online graphing tool.

b) number of days require to get 200 pounds of garbage can be gotten by finding the value t for which A = 200. Therefore:

A = 7.5t

t = A / 7.5 = 200 / 7.5

t = 26.67 days

The value of n is, 75.

Any relationship that is always in the same ratio and quantity which vary directly with each other is called the proportional.

Given that;

An inverse variation includes the points (15, 1) and (n, 5).

Now, We know that;

The inverse variation is defined as,

⇒ y = k x

Here, An inverse variation includes the points (15, 1) and (n, 5).

Hence, Substitute x = 15, and y = 1;

⇒ 1 = k × 15

⇒ k = 1/15

And, Substitute x = n and y = 5;

⇒ y = k x

⇒ 5 = 1/15 × n

⇒ 5 × 15 = n

⇒ n = 75

Learn more about the proportion visit:

https://brainly.com/question/1496357

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Answer:

Step-by-step explanation:

D = 17 in

W = 12 in

H = ??

Monitor is a ractangle, so we can use the Pythagoeran theorem:

W² + H² = D²

12² + H² = 17²

H² = 289 - 144

H² = 145

H = √145 ≈ 12

Answer:

8 miles per minute

A. 3.6

B. 5.9

C. 4.7

D.

Answer:

15. 0.125 miles a minute/16 a. 0.274     b. 0.181    c. 0.210      d. 60 packets for 10.9 is the best option.

Step-by-step explanation:

Answer:

me

Step-by-step explanation:

gbgtgrygthfthfthf i do lol

Answer:

x = -5

Step-by-step explanation:

Im pretty sure its -5 if it's not im sorry!

Answer:

B. 5

Step-by-step explanation:

Use the pythagorean theorem to solve: [tex]a^{2}[/tex]+[tex]b^{2}[/tex]=[tex]c^{2}[/tex].

[tex]a^{2}[/tex]+[tex]12^{2}[/tex]=[tex]13^{2}[/tex]

[tex]a^{2}[/tex]+144=169

Subtract 144 from 169.

[tex]a^{2}[/tex]-144=169-144

[tex]a^{2}[/tex]=25

Square root to get a.

[tex]\sqrt{a}[/tex]=[tex]\sqrt{25}[/tex]

a= 5

Answer:

Yes it is simplified

Step-by-step explanation:

2x^2 is not a like term to 2x because 2x does not have an exponent. Therefore, you cannot add 2x to 2x^2. So it is as simplified as it can be at this point

Answer:

A) 65 degrees

B) 89 degrees

Step-by-step explanation:

Complementary angles always add up to 90 degrees whereas supplementary angles always add up to 180 degrees

Hope it helps :)

Answer:

is there an actual graph though that would really help

Step-by-step explanation:

Answer: Y=50x

Step-by-step explanation:

since the average is 50 mph and y represents the total distance with x representing the time in hours the soluition would be y=50x where however many hours multiplied by 50 equals the distance in miles Dee traveled

Answer:

so-

Step-by-step explanation:

-2x is not like terms because it has a variable. yup.

I hope this helps bro:)

- Alie♥

Answer:

40% of 40 is 16. 40 - 16 = 24. So the dress is $24.

Answer:

I think the slope is 1.....I believe so..

Step-by-step explanation:

Answer:

Medimos el perímetro en unidades lineales, que representan una sola dimensión. Ejemplos de unidades de medida de longitud son pulgadas, centímetros, ... Encontrar el perímetro de un triángulo con lados que miden 6 cm, 8 cm, y 12 cm. ... P = 2l + 2w, donde l es el largo del rectángulo y w l ancho del rectángulo. espe