Math with a key 6 page 15 task 8 pl. For tomorrow

Answer:

what grade are you in so i can help

Step-by-step explanation:

The ratio of 30% to 60% she should mix is; 3:2

From the task content;

Let the volume of 30% sulphuric acid

solution and 60% sulphuric acid solution to be mixed be x and y respectively.

Hence, it follows that;

By solving simultaneously, it follows that;

Therefore, Ratio x/y = 6/4 = 3/2

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When we multiply (2x - 1) and (x + 2) using FOIL method, we get:

(2x - 1)(x + 2) = 2x(x) + 2x(2) - 1(x) - 1(2)

= 2x² + 4x - x - 2

= 2x² + 3x - 2

Therefore, the product of (2x - 1) and (x + 2) is 2x² + 3x - 2.

Answer:

uh I don't even know what this is

Answer: x = 500

Step-by-step explanation:

Use the Pythagorean Theorem

a²+b²=c²

300² + 400² = x²

90000 + 160000 = x²

250000 = x²

√250000 = √x²

500 = x

hope i explained it :)

The volume of the compound shape, that is the object formed by two hemispheres and a right cylinder is 66π in³.

The volume is the space occupied by an object. The volume of the compound shape equals the sum of the individual volumes, that is, of each part, which are represented by two hemispheres and a right cylinder.

Now we proceed to determine the volume of the compound shape (V), in cubic inches, by apply the following calculation:

V = (4/3) · π · (3 in)³ + π · (3 in)² · (10 in)

V = 66π in³

The volume of the compound shape, that is the object formed by two hemispheres and a right cylinder is 66π in³. \(\blacksquare\)

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The number of plastics of the size of 13 ft x 10ft will be 4.

The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the rectangle in a two-dimensional plane is called the area of the rectangle.

Given that:-

The number of the plastic required will be calculated as:-

When the total area of the tennis court will be divided by the area of the one plastic we will get the number of the plastic required.

Area of court = 25 x 20 = 500 square feet

Area of plastic = 13 x 10 = 130 square feet.

Number of the plastic = Area of court  ÷ Area of plastic

                                    = 500 ÷  130

                                    = 3.89 ≅ 4 plastics

Therefore the number of plastics of the size of 13 ft x 10ft will be 4.

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Answer:

\(-16\)

Step-by-step explanation:

\(f(5)=4(5)-1=19 \\ \\ g(5)=2^5+3=35 \\ \\ (f-g)(5)=f(5)-g(5)=19-35=-16\)

The addition of the polynomial \(x^{3}+3xy-2xy^{2} +y^{3}\) with \(2x^{3}-5x^{2} y-3xy^{2}-2y^{3}\) is  \(3x^{3}+3xy-5x^{2} y-5xy^{2}-y^{3}\).

What is a polynomial?

⇒ A polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

⇒ In the addition of polynomials, the like terms are added while in subtraction, the like terms are subtracted.

Calculation;

We have been given two polynomial which we have to add   \(x^{3}+3xy-2xy^{2} +y^{3}\) and \(2x^{3}-5x^{2} y-3xy^{2}-2y^{3}\)

The sign after addition or subtraction will always be of the variable having more value.

\((x^{3}+3xy-2xy^{2} +y^{3} )+(2x^{3}-5x^{2} y-3xy^{2}-2y^{3})\)

On adding like terms with each other

⇒ \((x^{3} +2x^{3})+ 3xy-5x^{2} y-(2xy^{2}+3xy^{2})+(y^{3}-2x^{3})\)

⇒ \(3x^{3}+3xy-5x^{2} y-5xy^{2}-y^{3}\)

Hence the addition of the polynomial\(x^{3}+3xy-2xy^{2} +y^{3}\) and \(2x^{3}-5x^{2} y-3xy^{2}-2y^{3}\) is \(3x^{3}+3xy-5x^{2} y-5xy^{2}-y^{3}\).

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Answer:

The answer is 12                                

Step-by-step explanation:

2 x 12 + 1 = 25

Answer:

-8

Step-by-step explanation:

The rate of change is found by

f(x2) - f(x1)

-------------------

x2 -x1

We know that f(x2) = -26 when x2 =5

And f(x1) = -10 when x1 = 3

-26 - (-10)

---------------

5 - 3

-26+10

---------------

2

-16/2

-8

Answer:

-120

Step-by-step explanation:

Answer:

YOUR ANSWER SHOULD BE -120

Step-by-step explanation:

heres why

becuase i said so

and we already asume its at 0 so if u go 120- 0 what do u get u get -120

so thats why

Based on the given boxplots, the correct comparison between the two classifications of the sodium content of the chips is B. The interquartile range (IQR) of the brands classified as healthy is greater than the IQR of the brands classified as regular.

The IQR represents the spread of the middle 50% of the data and is calculated by subtracting the first quartile (Q1) from the third quartile (Q3). In this case, the IQR of the healthy chips is approximately 70 mg while the IQR of the regular chips is approximately 40 mg. Therefore, the sodium content of the healthy chips has a greater spread than the sodium content of the regular chips.

The other options either compare the number of brands or specific values (such as the range or median) without taking into account the spread of the data. Therefore, option B is the best choice for comparing the sodium content of the chips based on the given boxplots.

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Based on the given boxplots, the correct comparison between the two classifications of the sodium content of the chips is B. The interquartile range (IQR) of the brands classified as healthy is greater than the IQR of the brands classified as regular.

The IQR represents the spread of the middle 50% of the data and is calculated by subtracting the first quartile (Q1) from the third quartile (Q3). In this case, the IQR of the healthy chips is approximately 70 mg while the IQR of the regular chips is approximately 40 mg. Therefore, the sodium content of the healthy chips has a greater spread than the sodium content of the regular chips.

The other options either compare the number of brands or specific values (such as the range or median) without taking into account the spread of the data. Therefore, option B is the best choice for comparing the sodium content of the chips based on the given boxplots.

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Answer:

The middle value of the data set is called/labled the median

Step-by-step explanation:

if there is a odd (1,3,5...)number of number in the data set circle the middle two and add them and divide by two and that will be your median

hope it helps:)

Also, just look at the number in the middle of the data set to figure out the median

Answer:

equalateral

Step-by-step explanation:

each side is equal to the next

Answer:

2. Equilateral

Step-by-step explanation:

Step 1: Process Of Elimination-

1. Right: No

This triangle is not a right triangle because it does not have a right triangle indicator nor does it equal 90°.

2. Equilateral: Yes

This triangle is an equilateral triangle because all 3 sides are equal and they add up to 180° meaning each side equal 60°.

3. Acute: No

A acute triangle is a triangle that is less then 90° but this triangle equals 180°.

4. Scalene: No

A scalene triangle is a triangle that has different side angles but they all add up to 180° but here we can see that the sides are equal.

Answer:

I think it's b but I'm not to sure

Answer:

8

Step-by-step explanation:

If my calculations are correct the third side is 8

Answer:

The correct answer is C. More than 1 kg

Step-by-step explanation:

since 3/2 is already greater than 1 and we are adding, the result must be greater than one.

Answer:

Step-by-step explanation:

The given equation is not instandard form. First standard form is neccesary.

The result is 3x + 108 = 12y which is equal to 12y = 3x + 108

The slope is represented in this form as m (Y = mx + b)

(with b as the initial value)

Therefore, 3 is the slope.

To find its perpendicular slope.

To find it's perpendicular, know that it is the negative reciprocal.

FInally, the slope perpendicular to the line whose equation is 3x - 12y = -108 is \(\frac{1}{-3\\}\)

The two numbers required to solve the following problem are, 13.3 and 6.7

What is Derivative?

The derivative of a function of a real variable in mathematics describes the sensitivity of the function value to a change in its argument. Calculus relies heavily on derivatives.

Solution:

Let the ture positive numbers be x,(x,y>0)

x + y = 20 -------- Given

We need to maximise \(xy^{2}\)

x = 20 - y

f(y) = (20 - y)*\(y^{2}\)

f(y) = 20\(y^{2}\) - \(y^{3}\)

f'(y) = 0

On differentiating:

f'(y) = 40y - 3\(y^{2}\)

0 = 40 - 3y

y = 13.3

x = 6.7

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The probability that none of the 10 randomly selected MIS graduates from UIUC make above $48,861 in their first job is (0.47)^10, which can be calculated using the binomial probability formula.

To find the probability that none of the 10 graduates make above $48,861, we raise the probability of an individual not making above $48,861 to the power of 10 (since we want all 10 to not make above that amount) and multiply it by the total number of combinations for selecting 10 graduates out of the total population.

Using the binomial probability formula, the probability that none of the 10 graduates make above $48,861 can be calculated as:

\(P(X = 0) = C(10, 0) * (0.47)^0 * (1 - 0.47)^{10-0}\)

where C(10, 0) represents the number of combinations of selecting 0 graduates out of 10.

Simplifying the equation, we find:

\(P(X = 0) = (1) * (1) * (0.47)^{10}\)

Therefore, the probability that none of the 10 randomly selected MIS graduates from UIUC make above $48,861 in their first job is \((0.47)^{10}\).

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the calculation made by subtracting the age at death from 65 is a concept of retirement age.

this calculation is often used as a way to determine when a person can retire and start receiving retirement benefits. In many countries, 65 is the standard retirement age, so by subtracting a person's age at death from 65, it can be determined how many years they have left until retirement.

understanding the concept of retirement age and how it is calculated can be helpful for individuals planning for their future and considering when they may be able to retire.


Years of potential life lost (YPLL) is a public health metric that measures the impact of premature mortality on a population. It helps quantify the burden of disease by estimating the number of years a person would have lived had they not died prematurely. The calculation is done by subtracting the individual's age at death from a predetermined age, often 65 or 75, depending on the standard used.

the concept of subtracting the age at death from 65 represents years of potential life lost (YPLL), which is an important measure in public health to assess the burden of premature mortality.

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Answer:

lateral area = 180π in²

Step-by-step explanation:

The lateral area is the surface of the cone only.

perimeter of base = 12 x 2 = 24π in

Surface Area = 1/2 perimeter x slant height

SA = 1/2 x 24π x 15 = 180π in²

In this scenario, we have two people, Ginger and Tim, who are using boats to cross a lake. Ginger covers the first 48 meters in 15 seconds, while Tim covers the first 30 meters in 8 seconds.

To solve this problem, we need to find out who has a faster speed. We can do this by calculating the speed of each person.

First, let's calculate Ginger's speed. We can use the formula:

speed = distance/time

Ginger's speed = 48 meters / 15 seconds = 3.2 meters per second

Next, let's calculate Tim's speed:

Tim's speed = 30 meters / 8 seconds = 3.75 meters per second

Since Tim has a faster speed than Ginger, he will cross the lake first. However, we should also consider the total distance each person needs to cover.

Let's assume that the lake is 100 meters wide. Ginger needs to cover the remaining 52 meters, which would take her:

time = distance/speed

time = 52 meters / 3.2 meters per second = 16.25 seconds

So, the total time for Ginger to cross the lake would be 31.25 seconds (15 + 16.25).

On the other hand, Tim only needs to cover 70 meters (100 - 30), which would take him:

time = distance/speed

time = 70 meters / 3.75 meters per second = 18.67 seconds

Therefore, the total time for Tim to cross the lake would be 26.67 seconds (8 + 18.67).

In conclusion, although Tim has a faster speed than Ginger, the total distance he needs to cover is shorter. Therefore, Tim will cross the lake first.

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Answer:

27,000 in.3

Step-by-step explanation:

Answer:

its 27,000 I got it right lol thanks to the person ^^^

Step-by-step explanation:

add me on sc whyhate_naya

Answer:

When you roll a 6-sided cube, numbered 1 to 6, the probability of rolling a 2 is 1:6. This is an example of theorectical probability.

Step-by-step explanation:

The probability of rolling a 2 on a 6-sided dice is  

1

6

The probability of rolling two 2s on two 6-sided die is, by the multiplication principle,  

1

6

×

1

6

=

1

36

Subjective is something that is based on personal opinion, so I think the answer is actually theoretical probability! Theoretical probability is a method to express the likelihood that something will occur. It is calculated by dividing the number of favorable outcomes by the total possible outcomes.

Hope this helps, have a good day :)

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The numerical value in this sentence, "the average price of a house in the new subdivision is $257,000" describes a Population Parameter.

A population parameter is a figure that describes a fact about a whole population. In this sentence, we can see that the figure quoted is representative of an entire population. A sample statistic, on the other hand, describes something about a part of a population.

So, for the statement above, we can see that the average price is representative of all the houses in the new subdivision. Thus, the figure is a population parameter.

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Hi there, here's your answer:

Given, a basketball team averaged 68 points per game in the last season and averaged 77 points per game in the present season.

To find:

The approximate percentage of increase.
Solution:

If 68 points was the average last season, and 77 points was the increase this season, then the number of increase in points is 9.

Also we have that % increase = \(\frac{Difference}{Original}\) × 100

Which is \(\frac{9}{68}\) × 100 = 0.1323 × 100 = 13.23%

Therefore, the approximate percent increase is 13%.

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Answer:

169 of the 200 free throws

Step-by-step explanation:

You would expect her to make at least 169 of the 200 free throws

Answer:

Brainliest

Step-by-step explanation:

21,000 x 0.89^7 =

9,288.58032806109 = 9288.58

Answer:

£9288.58

Step-by-step explanation:

Initial price= 21000

Price drop rate= 11%

Time= 7 years

Price at the end of 7 years: £21000*((100-11)/100)^7= £9288.58