which of these numbers is irrational?​

could be 17. not sure i´d wait for someone smarter than me to answer.

Answer:

A) 3(2x-1) --> 6x - 3

B) 10(b+4c) --> 10b + 40c

C) 9(g-5h) --> 9g - 45h

D) 7(4n-5m-2) --> 28n - 35m - 14

E) a(b+c+1) --> ab + ac + a

F) (8j-3l+9)6 --> 48j - 18l + 54

G) (40s+100t)/10 --> 4s + 10t

H) (48p+24)/6 --> 8p + 4

I) (2b+12)/2 --> b + 6

J) (20r-8)/4 --> 5r - 2

K) (49g-7)/7 --> 7g - 1

L) (14g+22h) / 1/2 --> 28g + 44h

Answer:

(x - 3)³ - (x - 1)³ + 7x² = 7(3x - 4)

=> x³ - 9x² + 27x - 27 - (x³ - 3x² + 3x - 1) + 7x² - 21x + 28 = 0

<=> -2x² + 6x + 1 + 3x² - 3x + 1 = 0

<=> x² + 3x + 2 = 0

<=> (x + 1)(x + 2) = 0

<=> x + 1 = 0 or x + 2 = 0

<=> x = -1 or x = -2

Answer:

1/4 is answer.

Step-by-step explanation:

Divide 3 to 12 = 1/4

Hope this helps. :)

Answer:

The perimeter is 50

Step-by-step explanation:

The original area is LW

The new area is (L-4)(W+3)

These areas are the same

1:      (L-4)(W+3)=LW

You are also told that the new figure is a square, hence

2:     (L-4)=(W+3)

Equation (2) implies

3:     L=W+7

Substitute for L in Equation (1) and solve for W

(W+7-4)(W+3)=(W+7)W

W^2+3W+7W+21-4W-12=W^2+7W

6W+9=7W

W=9

Now use Equation (3) to solve for L

L=16

The perimeter is 2W+2L

P=18+32=50

Answer:

[tex]11 \frac{3}{4}[/tex] min

Step-by-step explanation:

In order to solve this problem, we must subtract the times he has already used from the time he has available, so we get:

[tex]30-11 \frac{3}{4} - 6 \frac{1}{2}[/tex]

we can start solving this subtraction by turning all of the numbers into improper fractions so we get:

[tex]\frac{30}{1}-\frac{11*4+3}{4}- \frac{6*2+1}{2}[/tex]

[tex] \frac{30}{1}-\frac{47}{4}- \frac{13}{2}[/tex]

next, we can find a least common denominator. In this case it will be 4, so we need to turn all denominators into a 4, so we get:

[tex] \frac{30*4}{1*4}-\frac{47}{4}- \frac{13*2}{2*2}[/tex]

[tex] \frac{120}{4}-\frac{47}{4}- \frac{26}{4}[/tex]

and now we can subtract the numerators and copy the denominators so we get:

[tex]\frac{120-47-26}{4}[/tex]

[tex]\frac{47}{4}[/tex]

which can now be turned into a mixed number by dividing 47/4 which yields 11 with a remainder of 3, so the mixed number is:

[tex]11 \frac{3}{4}[/tex] min

and this is the amount of time he has available to solve the las problem.

Answer:

[tex]k=\dfrac{5}{9}[/tex]

Step-by-step explanation:

The given equation is :

[tex]y=\dfrac{5}{9}x[/tex] ...(1)

We need to find the constant of proportionality in the equation.

In this equation, y is directly proportional to x i.e.

y ∝ x

or

y = kx  ...(2)

k is constant of proportionality

If we compare equation (1) and (2), we find that,

[tex]k=\dfrac{5}{9}[/tex]

So, the constant of proportionality is equal to [tex]\dfrac{5}{9}[/tex].

Answer:

30

Step-by-step explanation:

If they are parallel then the 2 labelled angles sum to 180.

2x+50+5x-80=180

7x-30=180

7x=210

x=30

Answer:

X=30

Step-by-step explanation:

2x+50+5x-80=180

7x-30=180

7x=210

×=30

Answer:

acute

Step-by-step explanation:

Answer:

It is an acute triangle

Step-by-step explanation:

If it is an acute triangle, a^2 + b^2 > c^2

If it is a right triangle, a^2 + b^2 = c^2

If it is an obtuse triangle, a^2 + b^2 < c^2

If it is an equilateral triangle, a = b = c

6^2 +8^2  ?  9^2

36+64 ? 81

100 ? 81

? is >, meaning it is an acute triangle.

Answer:

x = -12

y = 11

Step-by-step explanation:

i used substitution and let 'x' = 10 - 2y

3(10 - 2y) + 4y = 8

30 - 6y + 4y = 8

30 -2y = 8

-2y = -22

y = 11

x + 2(11) = 10

x + 22 = 10

x = -12

Answer:

(r+s)(x)=52x+25

Step-by-step explanation:

i dont know how to explain but this is what I choose and it was right.

Answer:

i think it's 46.............

Answer:

2 km/h

Step-by-step explanation:

Let x represent the speed of the river current, t₁ be the time spent rowing against the current and t₂ be the time spent rowing with the current.

Since the speed of the still water = 20 km/h.

The speed of rowing against the current = (20 - x)

The speed of rowing with the current = (20 + x)

We know that velocity = distance / time. Hence time = distance / velocity

t₁ = 36 / (20 - x)

t₂ = 22 / (20 + x)

but t₁ + t₂ = 3 hours

Therefore:

3 = 36 / (20 - x) + 22 / (20 + x)

multiply through by 400 - x²

3(400 - x²) = 36(20 + x) + 22(20 - x)

1200 - 3x² = 720 + 36x + 440 - 22x

3x² + 14x -40 = 0

This gives x = -6.7 or x = 2

x cannot be negative therefore x = 2 km/h

The speed of the river current is 2 km/h

Answer:

2km/h is correct

Step-by-step explanation:

The other guy is absolutely correct

Answer:

The answer is 52

Step-by-step explanation:

104 divided by 2 equals 52 so 1 would be 52.

Answer:

it is C 52

the guy above me is right

Answerabout 20:)

Step-by-step explanation:

Answer:

Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction and division. The result of a multiplication operation is called a product. And division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication

Answer:

1. 2

2.4

3 6/5

4 -7

5 -2/3

Step-by-step explanation:

if it is parallel then the slope is the same

Answer:

[tex]Tiempo = \frac{1}{24}[/tex]

Step-by-step explanation:

La pregunta está incompleta, sin embargo, una posible pregunta podría ser calcular el tiempo que Carlos dedicará a estudiar cada asignaturas.

Para hacer esto, simplemente dividimos el tiempo disponible por el número de asignaturas.

Tenemos:

[tex]Tiempo\ disponible = \frac{1}{4}[/tex]

[tex]Numero\ de\ sujetos = 6[/tex]

Solución

[tex]Tiempo = \frac{Tiempo\ disponible}{Numero\ de\ asignaturas}[/tex]

[tex]Tiempo = \frac{1}{4} / 6[/tex]

[tex]Tiempo = \frac{1}{4} * \frac{1}{6}[/tex]

[tex]Tiempo = \frac{1}{24}[/tex]

Esto significa que dedicará 1/24 de su tiempo a cada

Answer:

356.4

r =4

h =12

just put it in this formula

2 pie r ( r + h )

GOOD LUCK FOR THE FUTURE! :)

Answer:

A) $87.5

B) $164

Step-by-step explanation:

A) Marked Price (Original Price)

= [tex]\frac{Sale Price}{1 -Discount}[/tex]

=[tex]\frac{77}{1-0.12}[/tex]

=87.5

B) Marked Price (Original Price)

=[tex]\frac{Sale Price}{1 -Discount}[/tex]

=[tex]\frac{123}{1-0.25}[/tex]

=164

Answer:

please send the question correctly

Answer:

Any graph

Step-by-step explanation:

Any graph can be represented by this since this is the equation to a graph.

m = slope

x = x

b = y intercept

answer=C (2,4,6,8,10.. is an arithmetic sequence with the common difference 2.)

It's the inverse of cos = 6/8

If you label your triangles, you'd find that you're given the adjacent side and the hypotenuse side so that tells us that we have to use cosine.

Answer:

4x+10y=-24

-2x+y=-24

2x+11y=-48

48+2x=0

48+11y =0

48=2x

48=11y

48/2 =2x/2

48/11=11y/11

x=24

y= 48/11

Answer:

Dont tell me you're trolling. Anyway, its 16

Answer:

you're correct

Step-by-step explanation:

Answer:

It is a function because the input values are different.

Answer:

it's the third one cuz the rest aren't divisible by 5:00 because the five usually goes up by then by fives then zeros so the end since it's a zero it's divisible by five

Answer:#3 5990

Step-by-step explanation:

5 10 15 20 25 the others dont have a five or a zero at the end

Answer:

the answer is 6.5 * tan74 = 22.67 feet

Step-by-step explanation:

Answer:

472.5

Step-by-step explanation:

Answer:

Step-by-step explanation:

Base (b) = 30 yd

height (h) = 31.5 yd

Area of the triangle

= 1/2 * b * h

= 1/2 * 30* 31.5

=472.5 yd²