I need help please please please

Answer:

Dalton’s model

Step-by-step explanation:

Dalton model is the only missing model. Dalton's model was the first atomic model: the atom represented as a solid, indestructible and indivisible mass. An idea that was already accepted by that time since the ancient Greeks.

Answer:

daltons

Step-by-step explanation:

Step-by-step explanation:

1 2/3, 1 1/2, 1 1/4 1 7/12 =>

1 8/12 , 1 6/12, 1 3/12, 1 7/12

Answer: 540

Step-by-step explanation: You get 540 when you round to the tenth place because it's already rounded.

Answer:

68.

Step-by-step explanation:

We have adjacent and hypotenuse given.

So, cosФ= adj/hpt

cos inverse=3/8

Ф=67.97=68.

Answer:

182857142857/100000000000

Answer:

7=9x

Step-by-step explanation:

Since he got $36 from working for 4 hours, you divide 36 by 4 to get the amount of money he makes per hour hence  the reason that m=9.

Same goes with the rest of the values.

Answer:

9562.000

Step-by-step explanation:

hope this helps with your work

Answer:

9,562 rounded to the nearest thousand is 10,000

Step-by-step explanation:

Answer:

The formula for exponential growth is f(x)=a(1+r)^x, where a is the initial amount/number, r is the growth rate, and x is the number of years/month/etc. The problem tells us that the initial area is 4500. Every year, it decreases by 7.25%, which is technically -0.0725. "t" is the time. Therefore, we plug in those values into the formula. Then, we have:

f(x) = 4500(1-0.0725)^t

f(x) = 4500(0.9275)^t.

Answer:

9

Step-by-step explanation:

Answer:

Pretty sure its C?

Answer:

x = 119°

Step-by-step explanation:

The angle between chord KJ and chord LM is half the sum of the arcs intercepted by the angle and its vertical angle, that is

[tex]\frac{1}{2}[/tex] (75 + 47)° = 0.5 × 122° = 61°

This angle and x are adjacent angles and sum to 180° , then

x = 180° - 61° = 119°

Answer:

PITYPEEPOEPEO

jdskfdslmf

Step-by-step explanation:

fnkasmkml;cmensa

Answer:

2304

Step-by-step explanation:

a1 = 9

a2 = 4*a1 = 4*9 = 36

a3 = 4*a2 = 4*4*a1 = 4*4*9 = 144

a4 = 4*a3 = ... = 4*4*4*9 = 576

a5 = 4*a4 = ... = 4*4*4*4*9 = 2304

in other words

an = a1*4^(n-1)

you have to run through the calculation (in our case a simple multiplication by 4) n-1 times with the starting value of a1.

so, a5 = 9 * 4^4

for example a20 would then be

a20 = 9 * 4^19

Answer:

141.42 or 141.4 since its rounded to the nearest tenth.

Step-by-step explanation:

Formula for this certain question is:

D = [tex]\sqrt{L^2 + W^2 + H^2}[/tex]

Plug in:

60 cm for length (L)

80 cm for depth (D)

and 100 cm for height (H)

You can also use a calculator online or a physical one.

Answer:

your answer would be 7y=8x+9

Step-by-step explanation:

Answer:

16in

Step-by-step explanation:

Plz help me too

Answer:

What

Step-by-step explanation:

What’s this

Answer:

you would simplify equation a by combining 2x plus 3x. yes they are equivalent. you can use any x to make the equation true.

Step-by-step explanation:

Answer:

Multiply/divide both sides by the same variable expression

No

Answer:

B=9*5=45m²

P=4+5+3=12m

H=9m

Now

S.A=P*H+2B=12*9+2*45=198m²

V=BH=45*9=405m³

here

B:base area of rectangle

P=perimeter of triangle

H=length of rectangle

S.A=surface area

V=Volume

Answer:

AXE and CXD  are vertical angles

AXF and FXD  are supplementary angles

DXC and BXC  are complementary angles

EXA and AXB  are adjacent angles

AXC and CXD  are supplementary angles

EXD and AXC are vertical angles

Step-by-step explanation:

Answer:

The slope m, is 3

i.e. Y=Mx+c where m is slope

Answer:

3

Step-by-step explanation:

remember the equation y=m*x+b? well, b and m are both numbers

in this case, m is 3, since 3x= 3*x and b=5.

m is the slope, and b is the y intercept (what y is when x is equal to 0)

a line is parallel if the slope doesn't change but the y intercept changes, aka moving the line up or down. ask me questions in the comment section if you have any

Answer: x=10

Step-by-step explanation: your equation will be 7(18-x)=56 so distribute the seven

126-7x=56

Now try to isolate x by subtracting 126

-7x=-70

Now to further isolate divide by -7

X=10

Hope this helps!

Answer:

C

Step-by-step explaination

C is false since 4^3=8

Answer:

x = 11

Step-by-step explanation:

By using angle bisector theorem,

"Bisector of an angle divides the opposite side of the angle into two segments such that they are proportional to the other two sides.

[tex]\frac{AC}{CD}= \frac{AB}{BD}[/tex]

[tex]\frac{8}{4}=\frac{x+3}{x-4}[/tex]

8(x - 4) = 4(x + 3)

8x - 32 = 4x + 12

8x - 4x = 32 + 12

4x = 44

x = 11

Therefore, value of x is 11.

Answer:

64 Centimeters squared

Step-by-step explanation:

Formula for the Area of a trapezoid:

A = a+b

----- h

2

a (base) = 6

b (base) = 10

h (height) = 8

6+10 = 16

16/2 = 8

8 times 8 = 64

Answer:

150

Step-by-step explanation:

Surface area is the area of all the surfaces (or sides). To find the surface area, find the area of one side of the cube. Since a side of a cube is a square, all the lengths are the same. So, 5*5= 25. There are 6 sides to a cube, so multiply 6 by one of the faces 's area (aka sides), so 6*25=150.