An experiment calls for each student to use 3.50 g of sodium hydroxide. There is only
78.2 g of sodium hydroxide remaining. How many students can complete the experiment?

The 3 types of line graphs are Simple line graph, Multiple line graph and Compound line graph.

Simple line graph - On the graph, there is only one line drawn.

Multiple line graph - On the same set of axes, many lines are plotted. An excellent way to compare similar objects over the same time period is via a multiple line graph.

Compound line graph - if data can be separated into two or more different categories. Compound line graphs are the name given to this kind of line graph. To represent the component portion of a total, lines are drawn. Part of the total is shown on the line below the top line, which displays the total. The size of each component is indicated by the space between every two lines.

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Answer:160%

Step-by-step explanation:

100%...........50                     80:0.5=160

1%..............0.5                       50:100=0.5

?.............80

160%...............80

The given equations do not represent a par of coincident lines. As the equations do not satisfy the conditions.

It is given that the pair of equations are,

4x + 3y - 1 = 5 and 12x + 9y = 15

To determine if the equations represent a pair of coincident lines.

Here we get, a₁ = 4, b₁ = 3, c₁ = -1

a₂ = 12, b₂ = 9, c₂ = -15

So, a₁/a₂ = 4/12 = 3

b₁/b₂ = 3/9 = 3

c₁/c₂ = -1/-15 = 1/15

Therefore,

[tex] \frac{a1}{a2} = \frac{b1}{b2}≠ \frac{c1}{c2} [/tex]

Thus, the given equations do not represent a pair of coincident lines

Now, if you put these equations in any graphing software or here I have used Desmos then you will get the graph (attached image), which further shows that the lines do not coincide.

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Parabola is called as a curve that is formed by the locus of a point whose distance from a fixed point and from a fixed line is the similar.

This set point is called focus, while the fixed line is known as the directrix of parabola.

Parabola does not have any inverse. Let a parabola having equation y = x^2,

it is graph looks like a U-Shaped curve opening up.

Here does not have an inverse as it fails the horizontal line test.

The inverse equation y=√x, only has the positive input values from the domain of parabola.

If we are constrain the domain to be greater than zero, then only it is possible for the function to pass the horizontal line test.

Therefore, Parabola does not have an inverse.

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This kind of evidence is an example of a claim. Hence, the correct answer is option 1.

A claim is a statement or assertion that is made about a particular topic or issue. In this case, the statement is being made by "doctors" and is being presented as evidence of a causal relationship between lack of sleep and negative health outcomes. The statement is not an argument, which would include reasoning or logic to support the claim, nor is it a testimony or excerpt, which would be a statement or quote from a specific person or source.

Option 2, "an argument," is incorrect because it suggests that reasoning or logic is being provided to support the claim. However, in the sentence provided, there is no indication that any reasoning or logic is being presented to support the claim that many people who do not get enough sleep each night suffer from illness and stress. Usually, an argument has a claim and evidence or reasoning to back up that claim.

Option 3, "a testimony or an excerpt," is incorrect because it suggests that a statement or quote is being provided from a specific person or source. However, in the sentence provided, there is no indication of a specific person or source providing the statement. Instead, the statement is being attributed to "doctors" in general rather than any specific individual. A testimony would typically include a statement or quote from a specific person or source, given under oath or affirmation in a formal legal setting.

This question should be provided as:

Use the sentence to answer the question. Most doctors say many people who don't get enough sleep every night struggle with illness and stress. Which kind of evidence is this an example of? Responses:

 The correct answer is option 1.

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A 45 degree angle is called an acute angle

There are 5 types of angles according to their measure:

1) Acute angle: it is the one that measures more than 0° and less than 90°.

2) Right angle: an angle that measures 90°.

3) Obtuse angle: an angle measuring more than 90° and less than 180°.

4) Extended angle: an angle measuring 180°.

5) Complete angle: an angle that measures 360°.

An angle is the opening formed by two half-straights (sides) with the same origin called vertex. For example, within a triangle there are three angles, which in total add up to 180°.

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The proportion when to make 4 cups of rice, Iain needs 5 cups of water and make 16 cups of rice, he needs 20 cups of water is 4/5 = 16/20.

Proportion in Mathematics simply demonstrates how many times one number can be able to fit into another number. It should be noted that ratios contrast two numbers by dividing them. In this case, A/B will be the formula if one is comparing one variable (A) to another variable (B).

In this case, to make 4 cups of rice, Iain needs 5 cups of water and make 16 cups of rice, he needs 20 cups of water. The proportion will be:

4/5 = 16/20

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A triangle is a three-sided polygon whose sum of all the angles is always 180 degrees, not 90 degrees.

No, a triangle is not always 90 degrees. In geometry, a triangle is a three-sided polygon with three angles. The sum of the angles in a triangle is always 180 degrees.

This can be proved using the fact that a straight line is 180 degrees. If we draw a straight line, and divide it into two angles, which are supplementary angles. Therefore, these angles add up to 180 degrees. In a triangle, we can draw one straight line and divide it into three angles, which are supplementary angles, therefore the sum of the angles in a triangle is always 180 degrees.

For example, if a triangle has angles of 90 degrees, 60 degrees, and 30 degrees, the sum of these angles is 180 degrees (90+60+30=180).

Therefore, In short, a triangle is a three-sided polygon whose sum of all the angles is always 180 degrees, not 90 degrees.

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Answer:

17

Step-by-step explanation:

67 minus 33 leaves 34 red bikes but divided that by half gives you 17

Different properties, significance of those properties and their applications in mathematics.

Associative property : Associative law states that the order of grouping the numbers does not matter. This law holds for addition and multiplication but it doesn’t hold for subtraction and division. This can be observed from the following examples.

Addition:

a+ (b+c) = (a+b) + c

Subtraction:

a-(b-c) ≠ (a-b) – c.

Multiplication:

a x (b x c) = (axb) x c

Division:

a ÷ (b ÷ c) ≠ (a ÷ b) ÷ c

Distributive property : This property is used to eliminate the brackets in an expression. The distributive property states that each term inside the bracket should be multiplied with the term outside. This property is very useful while simplifying the expressions and solving the complicated equations.

Addition:

a(b+c) = ab + ac

Subtraction :

a(b-c) = ab – ac

Commutative property : This property states that there is no change in result though the numbers in an expression are interchanged. Commutative property holds for addition and multiplication but not for subtraction and division.

Addition:

a+b = b+a.

Subtraction:

a-b ≠ b-a.

Multiplication:

a x b = b x a

Division:

a ÷ b ≠ b ÷ a.

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Answer:

Linear equations

Step-by-step explanation:

hope this helps

Answer:

-28

Step-by-step explanation:

f(-4) = 5(-4) - 2³ = -20 - 8 = -28

The angle of incline, of the target θ = 14.036.

The angle of elevation or depression can be calculated using the following formula: t a n = O A, where A is the horizontal distance between the observer and the point and O is the length of the side opposite the angle of elevation or depression, or the object's perpendicular distance from the horizontal line.

To calculate the slope percentage, multiply the result by 100 after dividing the height difference between two points by their separation. The rise is the height difference between two locations. The distance between the locations is known as the run. The result is that (rise / run) x 100 is equal to the percent slope.

Given,

the height of triangle = 12in

base of triangle = 48 in

tan θ = perpendicular / base

tanθ = 12/48

θ = tan ⁻¹( 12/48)

θ = 14.036

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Complete question -

Answer:

124.29ft (approximately 125ft)

Step-by-step explanation:

Refer to the Image

The equation Y = -2x + 3 is a linear equation in slope-intercept form.

This equation represents a straight line with a slope of -2 and a y-intercept of 3.

The slope -2 tells us that for every unit increase in x, the value of y will decrease by 2. The y-intercept 3 tells us that the line passes through the point (0,3) on the coordinate plane.

It's a line that goes down as the slope is negative and the line can be represented by a graph, that can be easily plotted using the slope and the y-intercept. This equation can be used to model real-world situations like linear regression and many other fields.

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Answer:

  1.6 L or 1600 mL

Step-by-step explanation:

You want to know the total volume of one 0.9 L box and two 350 mL boxes.

The units are related by ...

  1 L = 1000 mL

Then the volumes of the given boxes are ...

  0.9 L = 900 mL

  350 mL = 0.35 L

You can add the volumes in either of the like units:

  900 mL + 2 × (350 mL) = 1600 mL

  0.9 L + 2 × (0.35 L) = 1.6 L

The total volume of the juice boxes is 1.6 L or 1600 mL.

__

Additional comment

You can convert the units a couple of ways.

Because the fraction has equal measures in the numerator and denominator, it does not change the size of the volume. It only changes the units of the volume.

Answer:

35

Step-by-step explanation:

35

Answer: 25

Step-by-step explanation:

Answer: 10/7x + 8/7

Step-by-step explanation:

Slope intercept form : y = mx + b

10x - 7y = -8

-7y = -10x - 8

7y = 10x + 8

y = 10/7x + 8/7

Answer:7032

Step-by-step explanation:

The population of the town in 2016 will be 7032

Percentage decrease is the difference between starting and ending values. It shows a loss of value from the original expressed as a percentage regardless of units. The amount of decrease is the original amount minus the final amount.

Given that, A small town had a population of 12,000 people in 2001. The population has been decreasing at a rate of 3.5% each year.

We know that, Decrease rate =

A = P(1-r)ⁿ

A = final amount

P = initial amount

r = rate

n = years or time

Therefore,

A = 12000(1-0.035)¹⁵

A = 12000(0.965)¹⁵

A = 7032.19

A ≈ 7032

Hence, the population of the town in 2016 will be 7032

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Amount of water necessary to water all the plants in the house is 10/3.

An equation is the statement of two expressions located on two sides connected with an equal to sign. The two sides of an equation is usually called as left hand side and right hand side.

Given that,

Amount of water needed to water 2/5 of plants = 4/3

Equation representing the amount of water needed to water 5/5 of plants = (4/3) / (2/5)

          = (4/3) × (5/2)

          = 10/3

Hence 10/3 of water is needed to water all the plants in the house.

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Answer:

hard one goof luck

Step-by-step explanation:

Answer:

slope = -4/5x

y - int = 7/5

Step-by-step explanation:

4x + 5y = 7

-4x on each side

5y = -4x + 7

divide by 5 on each side

y = -4/5 x + 7/5

The longest and the shortest distances are 1 mile and 5 miles

The greatest number of miles left is 4.5 miles

From the question, we have the following distances that can be used in our computation:

Luke = 3 miles

Logan = 2 miles

This means that

Shortest = 3 - 2 = 1 mile

Longest = 3 + 2 = 5 miles

Represent the distance with x

So, we have

3 - 2 < x < 3 + 2

Evaluate

1 < x < 5

The number line is | 1 | 2 | 3 | 4 | 5 |

In (a), we have

Longest = 5 miles

So, we have

Greatest = 5 - 0.5

Greatest = 4,5 miles

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equation of a line : y=mx+b

Answer : y= -1x+2

To find out how many pages Van fills with his new baseball cards, we need to divide the total number of cards by the number of cards that fit on each page.

He has 45 baseball cards and each page holds 9 cards.

So, we can divide 45 by 9.

45 / 9 = 5

Therefore, Van fills 5 pages with his new baseball cards.

It's worth noting that this method gives the number of full pages that are filled and if there are any remaining cards, we have to add one more page for the remaining cards.

Answer:

Step-by-step explanation:

To solve the system of equations using substitution, we first need to isolate one of the variables in one of the equations. We can start by solving the first equation for y:

x - 5y = -6

y = (x + 6) / 5

Now we can substitute this expression for y into the second equation:

7x - 3y = 42

7x - 3((x + 6) / 5) = 42

Simplifying and solving for x:

(35/5)x - (3/5)x - 18/5 = 42

32x = 210+18

x=57/8

Now we can substitute this value of x back into the first equation to find the value of y:

y = ((57/8) + 6) / 5

y = 21/8

So the solution of the system is (x, y) = (57/8, 21/8).

Addition is commutative because the order in which two numbers are added does not affect the result.

Commutative property is applicable only for addition and multiplication processes. Thus, it means we can change the position or swap the numbers when adding or multiplying any two numbers.

Addition is commutative because the order in which two numbers are added does not affect the result. For example, 1 + 2 = 2 + 1 = 3. In contrast, subtraction is not commutative because the order in which two numbers are subtracted does affect the result. For example, 1 - 2 = -1, but 2 - 1 = 1. The operation is different when the order of the numbers are changed.

so, addition is commutative because the order in which two numbers are added does not affect the result.

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4/9 of the spectators in a football match are males. If 200 of them are females, then the total number of spectators is 360.

What is the proportion?

A proportion is two ratios that have been set equal to each other; a proportion is an equation that can be solved. When I say that a proportion is two ratios that are equal to each other, I mean this in the sense of two fractions being equal to each other. For instance, 5/10 equals 1/2.

Given that 4/9 of the fans in a football match are men and 200 are women. We must determine the total number of spectators at the football game.

If 4/9 of the total spectators are men, the remaining 5/9 are women.

Let x be the total number of spectators.

Mathematically,

5/9 of x = 200

5/9 × x = 200

5x = 1800

X = 360

As a result, the total number of spectators is 360.

The number of male spectators may also be calculated.

Males + Females = Total number of spectators

360 = Males + 200

Males = 160

Therefore, 4/9 of the spectators in a football match are males. If 200 of them are females, then the total number of spectators is 360.

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The probability that you win first prize and your friend wins second

prize is option D: 13/2730.

What is probability?

Probability is a way to gauge how likely something is to happen. Many things are difficult to forecast with absolute confidence. Using it, we can only make predictions about the likelihood of an event happening, or how likely it is. Probability can range from 0 to 1, with 0 denoting an impossibility and 1 denoting a certainty.

Total number of prizes awarded = 3

Number of people entering the drawing competition = 15

Number of ways to award the prize = 2730

Out of the 3 prizes the first and the second is needed.

So, the prize for the first and the second positions are fixed and there is no need to consider the remaining 13 people to win the prize.

Hence the remaining number of people who can win the 3rd prize  = 13

The number of ways one of them wins the 3rd prize = 13

The total number of ways = 2730

Therefore, the probability of the first 2 prizes fixed and the remaining 3rd awarded to the rest of the 13 people is 13/2730.

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