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Answer:

Solids can hold their shape because their molecules are tightly packed together. ... Atoms and molecules in liquids and gases are bouncing and floating around, free to move where they want. The molecules in a solid are stuck in a specific structure or arrangement of atoms.

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Answer:

320 cm² or 264 cm²

Step-by-step explanation:

first, the rectangular face area is 4 faces at 8 x 6 = 192 cm²

the 2 square faces will be either 8 x 8 or 6 x 6.

If 8 x 8, then the SA will be 192 + (2 x 8 x 8 ) = 320 cm²

If 6 x 6, then the SA will be 192 + (2 x 6 x 6 ) = 264 cm²

Answer:

(B) An uncontrolled experiment.

Step-by-step explanation:

In the case of an uncontrolled experiment here all participants are provided the similar treatment and there should be no comparison oppose to any group i.e. controlled

Since in the given situation, there are similar diets are provided to 20 volunteers and it can be that the  cholesterol level is decreased after particular time period,

Hence, it is an uncontrolled experiment.

Thus, option B is correct.

Answer:

x = 3/2

Step-by-step explanation:

x- 3/4 + 2/3 = 17/12

x = 17/12 + 3/4 -2/3

x = 3/2

Answer:

4 y + 3

Step-by-step explanation:

y = -3/4

d/dy((2 y + 1)^2 - 4 y^2 + 2) = 4

Indefinite integral:

integral(2 - 4 y^2 + (1 + 2 y)^2) dy = 2 y^2 + 3 y + constant

Answer:

yn +y -xn

Step-by-step explanation:

Mean= sum of numbers ÷number of numbers

x= sum of n numbers ÷n

Multiply both sides by n:

xn= sum of n numbers

sum of n numbers= xn -----(1)

Let the number added be a.

After a has been added,

y= (sum of n numbers +a) ÷(n+1)

Multiply both sides by (n +1):

y(n +1)= sum of n numbers +a

sum of n numbers= y(n +1) -a -----(2)

Substitute (1) into (2):

xn= y(n +1) -a

Expand:

xn= yn +y -a

a= yn +y -xn

Let's check!

Let the numbers be 1, 2, 3 and 4.

mean, x= 10 ÷4= 2.5

n= 4

Let the new number added, a, be 7.

a= 7

mean, y= 17 ÷5= 3.4

a= yn +y -xn

a= 3.4(4) +3.4 -2.5(4)

a= 7

Thus, the expression is true.

Answer:

Step-by-step explanation:

the appropriate null and alternative hypotheses's are something

Answer:

The answer is B. 1/3

Step-by-step explanation:

Hope this helps! :)

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Answer:

9 hours

Step-by-step explanation:

We can use a ratio to solve

247 dollars       171 dollars

---------------- = -------------

13 hours             x hours

Using cross products

247* x = 13*171

247x =2223

Divide each side by 247

247x/247 =2223/247

x=9

Answer:

7 *7*7*7*7*7

* means times

Step-by-step explanation: Anything with a power is the base or big number times itself times the amount of the exponent little number

example 5^2

5*5

Answer:

snsnnskskswwiwjwassnssjsjs

Answer:

D

Step-by-step explanation:

w>-3, and that doesn't include -3 itself, so it's everything above it.

-2, 1, 0, and beyond..

Answer:

second and fourth

Step-by-step explanation:

answered the question

Answer: Hello

Step-by-step explanation: The answer is

1/3 (3/2 x -3) = -5/6x

Answer: x=3/4

Hope This Helps!

Answer:

x=3/4

Step-by-step explanation:

1/3 times 3/2 x is 1/2x

1/3 times -3 is -1

1/2x-1=-5/6x

1/2 is equal to 3/6

-1=-5/6x-3/6x

-1=-8/6x

x=6/8

x=3/4

Answer:

I think this is the answer

4+–x

–x+4

Answer:

896 cabins

Step-by-step explanation:

Given: Each group of 16 campers requires 2 cabins

To find: How many cabins are needed for 112 campers?

Solution: To find how many cabins are needed for 112 campers, divide 16 by 2

[tex]16[/tex] ÷ [tex]2 = 8[/tex]

Now, multiply the result by the campers

[tex]112[/tex] × [tex]8 = 896[/tex]

Therefore, 896 cabins are needed for 112 campers

Answer:

Step-by-step explanation:

cos theta is 2/3 because  cos means reciprocal of sec

Answer:

option C

Step-by-step explanation:

[tex]sec\theta = \frac{1}{cos\theta}\\\\\frac{3}{2}= \frac{1}{cos\theta}\\\\cos\theta = \frac{1}{\frac{3}{2}} = \frac{2}{3}[/tex]

Answer:

Step-by-step explanation:

The x-coordinate of the point that divides the line segment will be -2. Then the correct option is B.

Let A (x₁, y₁) and B (x₂, y₂) be a line segment. Then the point P (x, y) divides the line segment in the ratio of m:n. Then we have

x = (mx₂ + nx₁) / (m + n)

y = (my₂ + ny₁) / (m + n)

The two endpoints are (-6, -2) and (8, -9). And m: n = 2: 5. Then the value of the x-coordinate is calculated as,

x = (2 · 8 + 5 · -6) / (2 + 5)

x = (16 - 30) / (7)

x = - 14 / 7

x = - 2

The x-coordinate of the point that divides the line segment will be -2. Then the correct option is B.

More about the section of the line link is given below.

https://brainly.com/question/6582647

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Answer:

axb/2

Step-by-step explanation:

When theres a triangle with a right angle you need to make in a rectangle and divide it by 2

Answer:

In order to find the area of a triangle, you need to use the formula [tex]\frac{1}{2} bh[/tex]. Substitute the known values into the formula and solve the equation.

Step-by-step explanation:

The formula to calculate the area of a triangle is [tex]\frac{1}{2} bh[/tex], where [tex]b[/tex] represents the length of the triangle's base, and [tex]h[/tex] represents the length of the triangle's height. Since [tex]b[/tex] and [tex]h[/tex] are variables that have different values in regards to different triangles, that means you should substitute the known/given values of each variable into the formula and solve the equation.

Answer:

6.73 x 10 ot the power of 5

Step-by-step explanation:

Answer:

The correct answer is 9 feet.

Step-by-step explanation:

Answer:

The range is 25

Step-by-step explanation:

Answer:

25 is the range

Step-by-step explanation:

173-148 is 25

Answer:

radius = 10 units

Step-by-step explanation:

using the Pythagorean theorem:

height of triangle = 6 units

base of triangle = 16/2 = 8 units

radius² = 6² + 8² = 36 + 64 = 100

radius = √100 = 10 units

Answer:

A, B and C

Step-by-step explanation:

NOTE: A line and a circle can intersect in zero points, one point, or have two points of intersection. It is impossible for a line and a circle to intersect in more than two points.

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Answer:

Number of step Marcela walk = 1,350 steps

Step-by-step explanation:

Given:

Distance between Marcela house and grandmother house = 540 meter

Each step of Marcela = 4/10 meter

Find:

Number of step Marcela walk

Computation:

Number of step Marcela walk = Distance between Marcela house and grandmother house / Each step of Marcela

Number of step Marcela walk = 540 / (4/10)

Number of step Marcela walk = 540 / 0.4

Number of step Marcela walk = 1,350 steps

Answer:

(d) Using the commutative property

Step-by-step explanation:

Given

The above steps

Required

Which is not part of the process

We have:

[tex]5(2x-8)= 20[/tex]

[tex]10x - 40 = 20[/tex]

[tex]10x - 40+ 40 = 20 + 40[/tex]

[tex]10x = 60[/tex]

[tex]\frac{10x}{10} = \frac{60}{10}[/tex]

[tex]x = 6[/tex]

Comparing the above steps with the given list of options, we can see that the commutative property is not applied at all.

Other properties are:

[tex]5(2x-8)= 20[/tex] ---- Distributive

[tex]10x - 40+ 40 = 20 + 40[/tex] ---- Like terms

[tex]\frac{10x}{10} = \frac{60}{10}[/tex] --- Isolating the variable

Answer:

x=2  y=-4

Step-by-step explanation:

2x-y=4   solve for x

2x-0=4

2x=4+0

2x=4 . divide both sides by 2

x=2

2x-y=4 .  solve for y

0-y=4

-y=4 . divide both sides by -1

y=-4

Answer:[tex]\left[\begin{array}{ccc}-16&15\\-11&1\\15&-15&\end{array}\right][/tex]

Step-by-step explanation:

-3A + 2B

=[tex]\left[\begin{array}{ccc}-12&3\\-15&-9\\21&-15\end{array}\right][/tex] [tex]+ \left[\begin{array}{ccc}-4&12\\4&10\\-6&0\end{array}\right][/tex] [tex]=\left[\begin{array}{ccc}-16&15\\-11&1\\15&-15&\end{array}\right][/tex]

Answer:

r=21.424

Step-by-step explanation:

Volume = (1/3) . π . r² . h

3847 = (1/3) . π . r² . 8

3847 = (8/3)πr²

r²= 3847/(8/3)π

r² = 459

r= √459 = 21.424