HeLp!!!!!!!!!!!!!!!!!!!!

HeLp!!!!!!!!!!!!!!!!!!!!

Answers

Answer 1

1. matter is made up of what atoms and molecules are made of, meaning anything made of positively charged protons, neutral neutrons, and negatively charged electrons.

2.Atoms comprise of the nucleus (which contains protons and neutrons) and electrons. Conversely, a molecule comprises of two or more, identical or different atoms, combined chemically.

3. Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.

4. A compound is a pure substance composed of two or more different atoms chemically bonded to one another.

hope this helps!


Related Questions

Which expression is equivalent to (21/2 x 2 3/4)^2

Answers

[tex]\((21/2 \times 2 \ 3/4)^2\) is equivalent to \(\frac{13320.25}{16}\)[/tex]

Sure, let's simplify the expression [tex]\((21/2 \times 2 \ 3/4)^2\)[/tex] step by step:

1. [tex]\(21/2\)[/tex] can be simplified to [tex]\(10.5\)[/tex].

2. [tex]\(2 \ 3/4\)[/tex]can be written as an improper fraction: [tex]\(2 \ 3/4 = 8/4 + 3/4 = 11/4\)[/tex].

Now, the expression becomes [tex]\((10.5 \times 11/4)^2\)[/tex].

3. Multiply [tex]\(10.5\) by \(11/4\): \(10.5 \times 11/4 = 115.5/4\)[/tex].

Now, the expression is [tex]\((115.5/4)^2\)[/tex].

4. Square the fraction: [tex]\((115.5/4)^2 = (115.5^2)/(4^2)\)[/tex].

5. Calculate the numerator and denominator separately: [tex]\(115.5^2\)[/tex] in the numerator and [tex]\(4^2\)[/tex] in the denominator.

[tex]\[ \text{Numerator: } 115.5^2 = 13320.25 \][/tex]

[tex]\[ \text{Denominator: } 4^2 = 16 \][/tex]

6. The final result is [tex]\(\frac{13320.25}{16}\)[/tex].

Now, you can simplify this fraction by dividing the numerator by the denominator:

[tex]\[ \frac{13320.25}{16} \div 1 = \frac{13320.25}{16} \][/tex]

Explain this sequence : 1234, 123.4, 12.34, 1.234, .1234, .01234, .001234

Answers

In every number you are dividing by 100 hope this helps 1234 ÷100 = 123.4÷100=12.34 ect...

Answer:

actually you divide by 10. 1234÷10, 123.4 ÷10, etc.

Step-by-step explanation:

Decide which of the two given prices is the better deal and why. You can buy shampoo in a 6 ounce bottle for $2.49 or in a 14 ounce bottle for $9.79. What is the cost per ounce for each bottle?

Answers

The cost per ounce of the first bottle is $0.415 and the second bottle is $0.699.

The first bottle has the better deal because if you were to have 14 ounces of the first type of shampoo, it would only cost $5.81

Cost per ounce is:

$0.42 per ounce for the 6 ounce bottle $0.70 per ounce for the 14 ounce bottle

To find the cost per ounce for each bottle, use the formula:

= Total cost / number of ounces

6 ounce bottle:

= 2.49 / 6

= $0.42 per ounce

14 ounce bottle:

= 9.79 / 14

= $0.70 per ounce

The 6 ounce bottle is therefore the better deal.

Find out more at https://brainly.com/question/8158263.

Adam has been asked to post a parcel for a family member. He has been told that the parcel weighs 12 lbs 8 oz. 1lb = 16 oz 1lb = 454 g How much does the parcel weigh to the nearest whole kilogram?

Answers

Based on unit conversions, the weight of the parcel to the nearest whole kilogramm is 6 kg.

How the weight is determined:

The weight in kilogram can be determined using unit conversions from pounds to kilograms as follows:

The weight of the parcel = 12 lbs 8 oz.

1 lb = 16 oz

12 lbs 8 oz = 200 oz (192 + 8)

200 oz = 12.5 lbs (200 ÷ 16)

1lb = 454 g

12.5 lbs = 5,675 g (12.5 x 454)

1,000 g = 1 kg

5,675 g = 5.675 kg (5,675 ÷ 1,000)

Approximation:

5.675 kg ≈ 6 kg.

Thus, we can conclude that 12 lbs 8 oz equals 6 kilograms approximately.

Learn more about unit conversions at https://brainly.com/question/174910.

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To find the weight of Adam's parcel to the nearest whole kilogram, first convert the weight from pounds and ounces to grams, and then convert to kilograms. After conversions and rounding, the parcel weighs approximately 6 kilograms.

The question asks to convert the weight of a parcel from pounds and ounces to kilograms. We'll start by converting the entire weight into grams and then convert grams to kilograms, rounding to the nearest whole number.

To convert 12 lbs 8 oz to grams, we need to convert the pounds and ounces separately and then add them together. There are 16 ounces in a pound, so 12 lbs is the same as 192 oz (12 lbs x 16 oz/lb). Therefore, the total weight in ounces is 192 oz + 8 oz = 200 oz.

Next, we convert the ounces to grams using the fact that 1 oz = 28.35 g. So, 200 oz is equal to 200 oz x 28.35 g/oz = 5670 g. To convert grams to kilograms, we use the fact that 1 kg = 1000 grams. Hence,

We then divide the weight in grams by 1000 to get the weight in kilograms: 5670 g \/ 1000 = 5.67 kg. Since we want to round to the nearest whole kilogram, we round 5.67 kg to 6 kg.

Therefore, Adam's parcel weighs approximately 6 kilograms when rounded to the nearest whole number.

Forty-eight pounds of sand are used to fill 12 bags. Miranda uses the five-step problem-solving plan. After completing the Solve step, how many pounds of sand should she find each bag will hold? Enter you answer in the box.

Answers

48 lbs / 12 bags

About 4 pounds of sand per bag

Each bag would hold 4 pounds of sand because 48 / 12 = 4


Pan Tomaszewski zarabiał 2000 zł, dostał podwyzke i obecnie zarabia 2500 zł. O ile % podwyższono mu pensję?

Answers

we are given

Mr. Tomaszewski earned 2,000 zlotys

so, past salary =2000

he got a raise and currently earns 2,500 zlotys

so, present  salary =2500

now, we have to find raised amount

we can use formula

raised amount = (present salary) - (past salary)

now, we can plug values

and we get

raised amount = 2500 - 2000

so, we get

raised amount = 500 zlotys........Answer

Find the value of x + y for x = 75.9 and y = 2.65.

Answers

the answer is 78.55
all you need to do is add 75.9+2.65

Answer:

x + y = 75.9 + 2.65 = 78.55

Step-by-step explanation:

To solve x + y given that x = 75.9 and y = 2.65. We will simply substitute the value of x in the equation with it value which is 75.9 and substitute the value of y in the equation with it value which is 2.65.

Therefore we have x + y to be

x+y

= 75.9 + 2.65

= 78.55

Therefore x + y = 78.55

Find Values of X and Y for No. 19
Because you can't solve for X and Y at the same time and 40 = 12x + 4 y.

Answers

So you need to find y in terms of x. But later, since the 12x and -12x cancel each other out. X can be any real number. And y. Depends on what real number x is.
Final answer:

To find the values of x and y in the equation 40 = 12x + 4y, isolate the x term and solve for x, then substitute the value of x into the equation to solve for y.

Explanation:

To find the values of x and y in the equation 40 = 12x + 4y, you need to solve for one variable at a time. First, isolate the x term on one side of the equation by subtracting 4y from both sides:

40 - 4y = 12x

Then, divide both sides by 12 to solve for x:

x = (40 - 4y) / 12

Now you have the equation for x in terms of y. To find the values of y, you can substitute the expression for x into the original equation and solve for y.

Learn more about Solving linear equations here:

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N(17+x)=34x-r solve for x

Answers

Answer: Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

[tex]x = -\frac{17N+r}{N-34}[/tex]

Step-by-step explanation:

[tex]N(17+x)=34x-r\\17N+Nx=34x-r\\Nx-34x=-r-17N\\x(N-34)=-r-17N\\x=\frac{-r-17N}{N-34}[/tex]

V=1/2at^2 solve for t

Answers

[tex]\dfrac{1}{2}at^2=V\qquad\text{multiply both sides by 2}\\\\at^2=2V\qquad\text{divide both sides by}\ a\neq0\\\\t^2=\dfrac{2V}{a}\to\boxed{t=\sqrt{\dfrac{2V}{a}}}[/tex]

What is −9/4v+4/5=7/8 thanks!

Answers

Final answer:

To solve the equation -9/4v + 4/5 = 7/8, subtract 4/5 from both sides, find a common denominator for 7/8 and 4/5, simplify, and multiply by 4/9 to solve for v.

Explanation:

To solve the equation -9/4v + 4/5 = 7/8, we need to isolate the variable v. To do this, we can start by subtracting 4/5 from both sides of the equation, which gives us -9/4v = 7/8 - 4/5. Next, we need to find a common denominator for 7/8 and 4/5. The least common multiple of 8 and 5 is 40, so we can rewrite both fractions with a denominator of 40. This gives us -9/4v = 35/40 - 32/40. Continuing to simplify, we get -9/4v = 3/40. To get rid of the fraction, we can multiply both sides of the equation by 4/9, canceling out the fraction on the left side. This gives us v = (3/40) * (4/9), which simplifies to v = 1/30.

Learn more about Linear Equations here:

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what is the product of (1.2)×5

Answers

It's 6. (1.2)x5 is just 1.2x5, which equals to 6.

what is the midpoint of the vertical line segment graphed below?

Answers

Answer:

the answer is A

Step-by-step explanation:

you just subtract the y2 by the y1


Answer:

Midpoint of the vertical line segment graphed below is:

(2, -2.5)

Step-by-step explanation:

Mid point of (x1,y1) and (x2,y2) is (a,b)

where [tex]a=\dfrac{x1+x2}{2}\ and\ b=\dfrac{y1+y2}{2}[/tex]

Here, (x1,y1)=(2,4) and (x2,y2)=(2,-9)

[tex]a=\dfrac{2+2}{2}\ and\ b=\dfrac4-9}{2}[/tex]

⇒ a=2 and b= -5/2= -2.5

Hence, midpoint of the vertical line segment graphed below is:

(2, -2.5)

How to write 50 hundredths

Answers

50 hundredths as a Fraction

Since 50 hundredths is 50 over one hundred, 50 hundredths as a Fraction is 50/100.



50 hundredths as a Decimal

If you divide 50 by one hundred you get 50 hundredths as a decimal which is 0.50.




50 hundredths as a Percent

To get 50 hundredths as a Percent, you multiply the decimal with 100 to get the answer of 50 percent.


Working out for 63+9×8+72÷9-13

Answers

72÷9= 8
9×8=72
63+72+8-13
72+8=80
63+80= 143
143-13= 130

Hello there!

This question is about to used their order of operations.

Order of operations stands for

P-Parenthesis

E-Exponents

M-Multiply

D-Divide

A-Add

S-Subtract

63+9*8+72÷9-13

63+72+72÷9-13

135+72÷9-13

135+8-13

143-13

=130

Answer⇒⇒ 130

Hope this helps!

Thank you for posting your question at here on Brainly.

-Charlie

A bag contains 3 green marbles and 8 white marbles. Suppose a marble is randomly selected what are the odds in favor of picking a white marbles

Answers

Total number of marbles : 3 + 8 = 11

8 are white.

Probability of picking a white one is 8/11

find X,Y & all 4 angles

Answers

Answer:

x=900/47, y=720/47

4x=5y == 3600/47 (top and bottom angle values)

3x+3y == 4860/47 (left and right angle values)

If you want the values in mixed number form, reply back.

Step-by-step explanation:

You can set this up in many different ways.

First, the inverse angles are always equal, so 4x=5y

Additionally, 2 sets of angles are supplementary, meaning they add up to 180 degrees; they are 4x+3x+3y=180 and 5y+3x+3y=180; both are equal

You could simplify the above two equations to get 7x+3y=180 and 3x+8y=180, meaning that 7x+3y=3x+8y, and 4x=5y

This simplifies to y=4x/5

Additionally, you could add the equations, meaning that 10x+11y=360, and y=4x/5

This gives you the answer:

x=900/47 and y=720/47.

You could check this by plugging the values into the equation, and if you do the math (which, I know, is kind of painful), you get the supposed values, so hooray!


Answer:

The angles measuring 4x and 5y measure: 3600/47

The other two angles measure: 4860/47

Step-by-step explanation:

The angles measuring 4x and 5y are vertical angles. Vertical angles are congruent, so we have one equation: 4x = 5y.

The angles measuring 5y and 3x + 3y form a linear pair. Angles in a linear pair are supplementary, so their measures add up to 180 degrees. That gives us a second equation: 3x + 3y + 5y = 180, or simply 3x + 8y = 180.

We have a system of two equations in two unknowns, so we can solve for x and y.

4x = 5y

3x + 8y = 180

We will use the substitution method.

Solve the first equation for x: x = 5y/4

Substitute 5y/4 for x in the second equation.

3(5y/4) + 8y = 180

15y/4 + 8y = 180

15y + 32y = 720

47y = 720

y = 720/47

Substitute y with 720/47 in the first original equation and solve for x.

4x = 5y

4x = 5(720/47)

4x = 3600/47

x = 900/47

The angles measuring 4x and 5y measure: 4x = 4(900/47) = 3600/47

The other two angles measure: 3x + 3y = 3(900/47) + 3(720/47) = 2700/47 + 2160/47 =4860/47

What will be the ratio of circles to triangles in a drawing showing 4 circles and 7 triangles?

Answers

4:7 or 4/7 or 4 to 7

Answer: 4:7

Step-by-step explanation:

The capacity of a beaker is 0.1 liter. Convert to milliliter

Answers

I believe the answer is 100 milliliters

The capacity of the beaker is  is 100 ml

Further Explanation

The capacity of a beaker is 0.1 L, convert this to milliliters (ml). We can say that the capacity in ml is variable x.

We know that:

[tex]\boxed {1L = 1000ml }\\[/tex]

so , to find the 0.1 L in milliliter :

[tex]\boxed {\frac{1000 ml}{1 L} = \frac{x}{0.1 L} }\\\boxed {x = \frac{1000ml \times0.1L}{1L} }[/tex]

we can cancel the Liter (L) unit in the above equation because it is both in the top and bottom:

[tex]\boxed { x= 100ml }[/tex]

From the above step-by-step, we can conclude three step in converting:

Write the conversion in fractionMultiplyCancel any units that are both top and bottom

Liter (L) and milliliter (ml) are the most unit of volume use in metric system of measurement.

[tex]\boxed {1L =1000 ml = 1dm^{3} }[/tex]

Learn More

Converting meter to centimeter brainly.com/question/301836

Math word problem brainly.com/question/997374

Converting kilogram to gram brainly.com/question/301801

Keywords: conversion, converting liter to milliliter, converting unit of volume, unit of volume, capacity of a beaker

What do I have to multiply or divide to get the answer?

Answers

Basically your multiplying
To get the answer multiply 19.38 by 4

Your answer should be 77.52

Find the x-intercept and the y-intercept for 2x+y=8 then use them to graph the line.

Answers

Find the x-intercept by substituting in 0 for y and solving for x.

Find the y-intercept by substituting in 0 for x and solving for y.

Let's find the x-intercept first: 2x + (0) = 8

2x = 8

Divide both sides by 2 to isolate and solve for the variable x, or the x-intercept.

x = 4 (x-intercept)

Now find the y-intercept: 2(0) + y = 8

Multiply 2 and 0.

y = 8 (y-intercept)

You have found the x-intercept to be 4 and the y-intercept to be 8. To graph the line, place a point on (4, 0) <== x-intercept and a point on (0, 8) <== y-intercept.

Your line should look like the attached image :)

find the sum and then classify it.5/6+√91

Answers

[tex]<b>HEY THERE [/tex]

FIRT ADDISON OF 5/6+√9

5/6+9.5393 = 10.3727253.

NOW CLASSIFICATION:- 10.40

HOPE IT HELPS YOU.

Answer:

10.3727253…, irrational

Step-by-step explanation:

Just took the test

Slope=4 contains (-4,-2)

Answers

The answer you are looking for is Y = 4X + 14.

To find this, you must solve for B. In doing so, you fill in the equation Y = MX + B, where M = 4, Y = -2, and X = -4. Filling in, you should get -2 = 4(-4) + B, which now you solve for B. Multiply -4 and 4 together to get -16, then add 16 to both sides. This will make B = 14. Finally, fill in Y = MX + B once more, this time only with M and B. Thus making Y = 4X + 14 the answer. Here's a graph to show this is correct.

I hope this helps!

How do you turn a percent into a fraction

Answers

Step 1: You want to remove the percent sign and then put the number over 100.

Step 2: If the percent is not a whole number then you want to multiply the top and bottom number by 10 but only for every number that comes after the decimal point.

Step 3: Always simplify if possible.

Examples:

43% = [tex]\frac{43}{100}[/tex]

78% = [tex]\frac{78}{100}[/tex] = [tex]\frac{39}{50}[/tex]

0.4% = [tex]\frac{0.4}{100}[/tex] = [tex]\frac{4}{1000}[/tex] = [tex]\frac{1}{250}[/tex]

Suppose f(x)=3x^2-2x
Find f (-4)

Answers

f(-4) = 3(-4)^2 - 2(-4)

f(-4) = 3(16) + 8

f(-4) = 48 + 8

f(-4) = 56

I think the answer is 56 :)

Please give BRAINIEST :)

The answer is 56

Here's how I got my answer:

Step 1: Replace all the x's in the equation. Which leaves us with [tex]3(-4)^2-2(-4)[/tex]

Step 2: Solve [tex]-4^2[/tex], which is [tex]16[/tex]. That leaves is with [tex]3(16)-2(-4)[/tex]

Step 3: Solve [tex]2(-4)[/tex], which is [tex]-8[/tex]. That leaves us with [tex]3(16)+8[/tex]

Step 4: Solve [tex]3(16)[/tex], which is [tex]48[/tex]. That leaves us with [tex]48+48[/tex]

Step 5: Simplify [tex]48+48[/tex] to get your answer, 56.

I'm confused like in #1 the positive is five but what do I put for the negative

Answers

You found $5, so it's positive. You don't put anything in the negative, because you aren't losing anything.

find the area of a circle with a radius of 6.7 m to the nearest square unit

Answers

Answer:

141 Square units.

Step-by-step explanation:

Area of a circle is equal to pi*radius squared.


[tex]A = \pi \times 6.7^{2} \\A = 141.026....\\A \approx 141 u^2[/tex]

Answer:

A = 141 m²

Step-by-step explanation:

The formula of an area of a circle with radius r:

[tex]A_O=\pi r^2[/tex]

We have r = 6.7m. Substitute:

[tex]A_O=\pi\cdot6.7^2=\pi\cdot44.89\approx3.14\cdot44.89=140.9546\approx141\ m^2[/tex]

Which is a correct first step for solving this equation? x+7=2x+5−4x

Answers

First Solving for like terms such as 2x+-4x = -2

x+7=2x+5−4x

x + 7 = 2x + 5

x + 2x = 5 - 7

3x = -2

x = -2/3

So the answer should be to combine the like terms in step two. x + 7 = -2x + 5

In 2000 South Dakota had a population of 754,844. The number of people in South Dakota increased by 7.9% in 2010. What is South Dakota's approximate population in 2010?

Answers

814,180. Hope I helped. If i didn't I am sos sorry. I would take 7.9 or .079 to 754,844 to get your number.

The approximate population of South Dakota in 2010 after a 7.9% increase from the 2000 population is 814,477 people.

To find the population of South Dakota in 2010, we need to calculate the increased population based on the given percentage increase. We are provided with a population of 754,844 in 2000 and an increase of 7.9% for 2010.

Here is the step-by-step calculation:

Multiply the population of 2000 by the increase percentage (converted to a decimal):

754,844 x 0.079 = 59,632.68.

Add this increase to the 2000 population to get the 2010 population:

754,844 + 59,632.68 = 814,476.68.

Therefore, the approximate population of South Dakota in 2010 is 814,477 people (rounded to the nearest whole number).

Solve the following inequality then place the correct answer in the box provided 8x-1<15

Answers

here is the answer and the steps I hope that this helped!
Step #1: Add 1 to both sides

8x< 16

Step #2: Divide by 8 on both sides

Final Answer: x< 2

*Think of the less than symbol as just an equals sign and do anything in PEMDAS to get the vaiable (x) alone on one side.
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