The ratio of boys to girls in a classroom is 4 : 5. What is the meaning of this ratio? ​

Answer:

D

Step-by-step explanation:

Answer:

Your answer will be D I promise it is correct but if it's not correct I'm truley sorry

Step-by-step explanation:

Answer:

Step-by-step explanation:

Surface Area of a cylinder = 2 × area of base + lateral face

First find the area of the base

Area of Base = πr² ( pi × radius squared ) ( pi = 3.14 )

AB = 3.14 × 3²

AB = 3.14 × 9

Area of Base = 28.26

Next, find the lateral face

Lateral Face = circumference of base × altitude

( circumference of base = 2πr ) ( altitude = height of the cylinder )

LF = 2 × 3.14 × 3

Lateral Face = 18.84

Last, is the Surface Area

Surface Area of a cylinder = 2 × area of base + lateral face (formula)

SA = 2 × 28.26 + 18.84 × 5

SA = 56.52 + 18.84 × 5

SA = 56.52 + 94.2

Answer:

3(x+4)

Step-by-step explanation:

simple common factor problem.

Answer:

-1

3

[-4,-2] and [2,3] are increasing

[-2,-1] and [3,5] are decreasing

(-infinity,-4] and [-1,2] and [5,infinity)

Step-by-step explanation:

look at the graph

for 47. it's asking when the input (aka the X) is equal to 1, what is the output (aka the Y). so just go to the graph where X=1 and read the Y

Answer:

y = 80x + 5000

Step-by-step explanation:

Answer:

[tex]x(x - 1) - {x}^{2} + 2x = 5 \\ {x}^{2} - x - {x}^{2} + 2x = 5 \\ \therefore \: x \: = 5[/tex]

Answer:

x=5

Step-by-step explanation:

[tex]x(x-1)-x^2+2x=5[/tex]

expand by using distributive property

[tex]x^2-x-x^2+2x=5[/tex]

simplify

x=5

check work by substituting 5 into the original equation and simplify

use PEMDAS

[tex]5(5-1)-5^2+2(5)=5[/tex]

[tex]5(4)-25+10=5[/tex]

add and subtract  (left to right)

20-25+10=5

5=5

The equation is true, thus x=5

Answer:

[tex]x[/tex]∈{[tex]\frac{\sqrt{129} +33}{60} ,\frac{-\sqrt{129}+33 }{60} )[/tex]

Step-by-step explanation:

( There is over 25 steps) (brainly has a max amount of characters)

Answer:

63.55

Step-by-step explanation:

1. Given that Javier's pay rate is $10.25 per hour, let's find the combined amount he earned from Monday and Tuesday by multiplying the hours worked by 10.25.

2. Now, let's add 24.6 and 38.95 to get how much he earned:

Therefore, Javier earned 63.55 dollars and cents on those two days.

Answer:

For every orange kitten, there are two black kittens. I hope this helps.

Step-by-step explanation:

Answer: (a.) 32x-20  4*8-4*5        (b.) 22y    11y+11y

Step-by-step explanation:

Note the rule

[tex]\boxed{\sf a_n=ar^{n-1}}[/tex]

Now

[tex]\\ \tt\longmapsto a_2=3(-1/2)^{2-1}=3(-1/2)=-3/2[/tex]

[tex]\\ \tt\longmapsto a_3=3(-1/2)^{3-1}=3(-1/2)^2=-3/4[/tex]

[tex]\\ \tt\longmapsto a_4=3(-1/2)^{4-1}=3(-1/2)^3=-3/8[/tex]

[tex]\\ \tt\longmapsto a_5=3(-1/2)^{5-1}=3(-1/2)^4=-3/16[/tex]

Answer:

f(-12) = -13

Step-by-step explanation:

f(x) = x - 1

Let x = -12

f(-12) = -12-1

       = -13

Answer:

[tex]f(x) = x - 1 \\ f( - 12) = - 12 - 1 \\ \boxed{ f( - 12) = - 13}[/tex]

Hello There!

y-y1=m(x-x1)

y-1=m(x-2)                       [tex]m=\frac{y2-y1}{x2-x1}[/tex]

                                                [tex]m=\frac{10-1}{5-2}[/tex]

                                                 [tex]m=\frac{9}{3} \\m=3[/tex]

y-1=3(x-2)

y-1=3x-6

y=3x-6+1

y=3x-5

hope it helps

Answer

its G

Step-by-step explanation:

it 23

Answer:

OA

Step-by-step explanation:

that is the only one with the right numbers

Answer:

Step-by-step explanation:

So first of all, you can rearrange your equations:

4x + 7x = 11 can be rearranged and simplified to x = 11/7

x = y + 1 can be rearranged to y = x - 1

Then you can graph them like normal by plugging in points. It should look like the following picture

for 2 answers are -6/5, -3 and 3

Step-by-step explanation:

i don't know answer for 1 and 3 but i can help u with 2

5x^3 + 6x^2 - 45x - 54

x^2( 5x + 6) -9(5x-6)

(5x+6)(x^2 - 9)

5x+6=0 x^2-9=0

5x= -6 x^2= 9

x= -6/5 x= -3 or 3

Answer:

Step-by-step explanation:

Circles are all similar, and "the circumference divided by the diameter" produces the same value regardless of their radius. This value is the ratio of the circumference of a circle to its diameter and is called π (Pi).

Answer:

It should be a. 0.004.

Step-by-step explanation:

I got this correct on Edge.

Answer:

1 is the answers for the question

Step-by-step explanation:

please mark me as brainlest

Answer:

1

Step-by-step explanation:

2,3,4,0,1,2,-2,-1,0...

Feel free to mark this as brainliest! :D

Step-by-step explanation:

63+36+X = 180 (interior angles of a triangle equal 180)

X = 180-99

X= 81

X+Z= 180(angles on a straight line adds up to 180)

81+y= 180

Z=180-81

Z =99

13+Z+Y=180

13+99+Y=180

Y=180-112

Y=68

[tex] = \: \: x \times ( {x}^{2} + 4)[/tex]

Step-by-step explanation:

[tex] {x}^{3} + 4x \\ \\ factor \: \: the \: \: expressions \: \: \\ \\ factor \: xfrom \: th e \: expression \\ \\ there \: for \: \: the \: factor \: is \\ x \times \: ( {x}^{2} + 4)[/tex]

hope it helps

Answer:

rearrange the question

y - 5x = 8.................(1)

y - 8x = 9..................(2)

make y the subject formula in eqn. (1)

y = 8 + 5x................(3)

substitute

8 + 5x - 8x = 9

-3x = 1

x = -⅓

y = 8 + 5x

y = 8 + (-⅓)

y = 23/3