CAN SOMEONE HELP ME UNDERSTAND THIS PLEASE

The equation that can be used to find the number of hours, h, Marco  spent practicing the rest of the week is h = 40

Two or more expressions with an Equal sign is called as Equation.

Let h be the number of hours Marco spent practicing the drums from Monday to Thursday.

The total number of hours Marco spent practicing the drums last week is:

h + 13 (Friday) + 0 (Saturday) + 0 (Sunday) = 53

So we can use the following equation to find the number of hours, h:

h = 53 - 13 = 40

Therefore, the equation that can be used to find the number of hours, h, Marco spent practicing the rest of the week is h = 40

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The graph is shown in the attached image.

Tatiana is the athlete who trains a weekly amount of kilometers equal to the median of the 11 competitors.

To find the median, we need to first arrange the values in order from lowest to highest:

4, 5, 5, 5, 5.5, 6, 7, 8, 8, 9, 10

Since there are 11 values, the median is the middle value. In this case, the middle value is 5.5. Therefore, the athlete who trains a weekly amount of kilometers equal to the median of the 11 competitors is Tatiana, who trains 5.5 kilometers per week.

None of the other athletes in the table trains exactly 5.5 kilometers per week, so Tatiana is the only correct answer.

It's worth noting that the median is a measure of central tendency that is less sensitive to outliers than the mean. In this case, the values range from 4 to 10, which is a relatively wide range, but the median still provides a useful measure of the typical training distance among the 11 athletes.

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The volume of shipping container is calculated as:

c. 3000116 in³ 3000 and 1 sixteenth, in³

The shipping container in this problem has a shape of rectangular prism. To find it's volume, we will apply the formula for the volume of a rectangular prism which is given as:

Volume = length × width × height.

Given the parameters of the shipping container as:

Length = 1512 inches

Width = 1014 inches

height = 2012 inches

Plug in the values:

volume of shipping container = 1512 × 1014 × 2012

= 3.08473402e9 cubic inches.

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Answer: The percentage of people surveyed who liked blue cars is 50%.

Step-by-step explanation:

Total number of people partaking in survey= 36

number of people who like blue cars= 18

therefore, fraction of people who liked blue cars= \(\frac{18}{36}\)

hence, percentage of people who liked blue cars= (18/36)*100 %

                                                                                  = 50%  

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Answer:

Percentage of people who like blue-coloured cars is 50%

Number of people who were surveyed=36

Number of people who like blue-colored cars=18

Therefore, Percentage of people who like blue cars= (Number of people who like blue cars/ Number of people who were surveyed)*100

=(18/36)*100

=50%

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Answer:

B) 6

Step-by-step explanation:

Let the number be x

Product of 6 and square of number plue 15 : (6x²) + 15

Coefficient of x² = 6

The number of times the average soccer play travel the length of the field is 114.9

The given parameters are

Distance travelled by the average soccer player = 7 miles

Length of a field = 98 meters

Convert the distance travelled by the average soccer player from miles to meters

So, we have

Distance travelled by the average soccer player = 7 * 1609 meters

Evaluate the product

So, we have

Distance travelled by the average soccer player = 11263 meters

The number of times the average soccer play travel the length of the field is

Number of times = Distance travelled by the average soccer player/Length of a field

So, we have

Number of times = 11263 meters/98 meters

Evaluate the quotient

So, we have

Number of times = 114.9

Hence, the number of times the average soccer play travel the length of the field is 114.9

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Answer:

\(\boxed{3}\)

Step-by-step explanation:

We can use ratios to solve since the sides are proportional.

\(\frac{18}{x} =\frac{48}{8}\)

Cross multiply.

\(48x=18 \times 8\)

Divide both sides by 48.

\(\frac{48x}{48} = \frac{18 \times 8}{48}\)

\(x=3\)

The value of x in the given triangle is 3.

Two triangles are similar if they have the same ratio of corresponding sides and equal pair of corresponding angles.

Given are two similar triangles,

Therefore, they have the same ratio of corresponding sides

18/48 = x/8

x = 3

Hence, The value of x in the given triangle is 3.

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Answer:

\(2 \times 10 {}^{ - 7} \)

Step-by-step explanation:

\( \frac{4 \times 10 {}^{ - 4} }{20 \times 10 {}^{2} } = \frac{0.0004}{2000} = 2 \times 10 {}^{ - 7} \)

Hope this helps ;) ❤❤❤

Answer:

just look at picture

Step-by-step explanation:

Hope this helps :)

Answer: 1,3,5

I got them right on my assignment

Option (A) The solution set is unbounded, (C) There is one point of intersection of the boundary curves, (E) The boundary curves intersect at approximately (-3, 0) are correct.

It is defined as the expression in mathematics in which both sides are not equal they have mathematical signs either less than or greater than known as inequality.

We have two inequality:

x² - 9y² < 9

y > 2×

After plotting on the graph:

From the graph:

The correct options are:

The solution set is unbounded

There is one point of intersection of the boundary curves.

The boundary curves intersect at approximately (-3, 0).

Thus, option (A) The solution set is unbounded, (C) There is one point of intersection of the boundary curves, (E) The boundary curves intersect at approximately (-3, 0) are correct.

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Answer:

1/3 cup Serving will provide 120 calories and 4 grams of fibre

Step-by-step explanation: one gram = 7.716 calories

1/2 cup serving provides 180 calories and 6 grams.

One cup serving with you provide 360 calories and 12 grams

So

1/3 cup Serving will provide 360/3 calories and 12/3 grams

1/3 cup Serving will provide 120 calories and 4 grams of fibre

Hi! Your answer is 11. When multiplying terms with exponents, the exponents add up.

Step-by-step explanation:

You want to multiply the terms with the exponents. You should get 3 and 8, add those up and you will get 11.

Hope this helps! Have a good day :)

Answer:

(a) y intercept is approximately 4.3

(b) \(y = 1.5x+4.5\)

Step-by-step explanation:

Given

See attachment for graph

Solving (a) The y intercept

This is the point where \(x =0\)

From the attached graph; By observation

\(y \approx 4.3\) when \(x =0\)

So, the y intercept is approximately 4.3

Solving (b): The equation of best fit.

First, calculate the slope of the line using:

\(m = \frac{y_2 - y_1}{x_2 - x_1}\)

Where

\((x_1,y_1) = (9,18)\)

\((x_2,y_2) = (8,16.5)\)

So:

\(m = \frac{16.5- 18}{8 - 9}\)

\(m = \frac{-1.5}{- 1}\)

\(m = 1.5\)

The equation is then calculated using:

\(y =m(x - x_1) + y_1\)

Where: \(m = 1.5\) and \((x_1,y_1) = (9,18)\)

\(y = 1.5(x - 9) + 18\)

\(y = 1.5x - 9*1.5 + 18\)

\(y = 1.5x - 13.5 + 18\)

\(y = 1.5x+4.5\)

The equations that represent the diagram given are 7 + 8h = 167, 8h = 160

To find the equation that represent the situation, we should simply count the number h present in the diagram, add it to 7 and equate the entire length to 167 which is the length of the tube.

This can be represented mathematically as

\(7 + h + h + h + h + h + h + h + h = 167\)

we can simplify this further as

\(7 + h + h + h + h + h + h + h + h = 167\\7 + 8h = 167\\\)

This can also be simplified as

\(7 + 8h = 167\\8h = 167 - 7\\8h = 160\)

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Answer:

the answer to this question is $2,350

Step-by-step explanation:

june has 30 days so $75 × 30 + $100 = $2,350

Answer:

35%

Step-by-step explanation:

What was the numerical difference?

88722 - 65720 = 23002

Which number is the denominator for the % increase?

It must be 65720.

23002/ 65720  * 100 = 35%

So if we take 35% of 65720 and add it on  to 65720 what do we get.

35/100 * 65720 + 65720 = 88722 just as we should.

Answer:

33

Step-by-step explanation:

Total no. of observation given = 25, 29, x

No. of observations = 3

Given, average of the observations = 29

Therefore, by the problem,

\( = > \frac{25 + 29 + x}{3} = 29\)

=> 25 + 29 + x = 29 × 3

=> 54 + x = 87

=> x = 87 - 54

=> x = 33 (Ans)

It is true that a linear transformation T : Rn → Rm is completely determined by its effect on columns of the n × n identity matrix.

What is a linear transformation?

A linear transformation is a function from one vector space to another that takes into account the underlying (linear) structure of each vector space. Another term for a linear transformation is a linear operator, sometimes known as a map.

The basis vectors in Rn are the columns on the identity matrix.

Since T is a linear transformation and any vector can be expressed as a linear combination of these, if we know where these columns go, we know everything.

Hence, the given statement is true.

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Question: A linear transformation T : Rn → Rm is completely determined by its effect on columns of the n × n identity matrix. Is it true or false?

Answer:

False

Step-by-step explanation:

an obtuse triangle maybe isosceles or scalene

Answer:

bla bla

Step-by-step explanation:

67

Answer:

The first one is correct

Step-by-step explanation:

ITs all good

The box and whiskers plot is made up of five points: the minimum, the first quartile (Q1), the median (Med), the third quartile (Q3), and the maximum. The minimum is the lowest value in the dataset and the maximum is the highest value in the dataset.

Median is the middle number in a set of numbers when the numbers are arranged in order from least to greatest. It is a type of measure of central tendency, which provides an indication of the “middle” value in a set of numbers. It is often used to measure the average of a set of numbers, particularly when there are extremely large or small values in the set.

The box and whiskers plot for this set of data is a visual representation of the data that makes it easier to interpret. The first quartile is the value that is 25% of the way through the dataset and the third quartile is the value that is 75% of the way through the dataset. The median is the middle value in the dataset.

To create a box and whiskers plot for this set of data, the minimum is 2, the first quartile is 4, the median is 5, the third quartile is 10, and the maximum is 14. The box and whiskers plot would then be represented by the following graph:

|                                 |

| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |

|    |    |    |    |    |    |    |    |    |    |

|  2 |  4 |  5 | 10 | 14 |

The box and whiskers plot graphically illustrates the spread of the data and allows us to easily compare the data to other datasets. It is also useful for identifying outliers in the dataset, as any value outside of the box and whiskers plot is considered an outlier.

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Answer: He need 2 containers .

Step-by-step explanation:

Given: Reece drinks one pint of milk a day.

Since 1 pinch = 0.4732 liter

i.e. Milk required for each day = 0.4732 liter

Milk required for 7 days = 7 x (0.4732 ) liters

= 3.3124 liters

Milk required for 1 week = 3.3124 liters

Milk in each container = 2 liters

Number of containers required = (Milk required for 1 week ) ÷ (Milk in each container)

= 3.3124 ÷ 2

= 1.6562 ≈ 2

Hence, he need 2 containers .

Answer:

The minute hand of the watch would sweep through an angle of;

Explanation:

Given that the class started at 12:12 PM and ended at 12:50 PM.

The number of minutes used is;

The minute hand makes a complete rotation in 60 minutes.

Therefore, the minute hand of the watch would sweep through an angle of;

Answer:

A. 0

Step-by-step explanation:

| 1 4 4  |

| 5 2 2 |

| 1 5 5  |

a1 = | b2 b3 | = | 2 2 |

      |c2  c3  |    | 5 5 |

a2 = | b1 b3 | = | 5 2 |

       | c1 c3  |    | 1 5 |

a3 = | b1 b2 | = | 5 2 |

       | c1  c2 |    | 1 5 |

a1 - a2 + a3

    | 2 2 |           | 5 2 |            | 5 2 |

(1)  | 5 5 |  - (4)  | 1 5 |     + (4) | 1 5 |

1 [(2)(5) - (2)(5)] - 4 [(5)(5) - (2)(1)] + 4[ (5)(5) - (2)(1)]

1 [10 - 10] - 4 [25 - 2] + 4 [25 - 2]

1 [0] - 4 [23] + 4 [23]

- 92 + 92 = 0

I hope this helps!

The solution of Equation are (5/2, 4/3).

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

3x+5y=14..........(1)

6x - 4y=9..............(2)

Solving equation (1) and (2) we get

3x + 5y = 14

Subtract 3x from both sides.

5y = 14 - 3x

Divide by 5 on both sides.

y = -3/5x + 14/5

and, 6x - 4y = 9

Subtract 6x from both sides.

-4y = 9 - 6x

Divide by -4 on both sides.

y = 3/2x - 9/4

From the graph we get

x = 2.405

y= 1.375

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We are given a parent function f(x)= x and asked the transformation process that takes it to g(x)=3x-1

PART 1

If g(x) = 3f (x): For any given input, the output g(x) is three times the output of f(x), so the graph is stretched vertically by a factor of 3. If g(x) = f (3x): For any given output, the input of g is one-third the input of f(x), so the graph is shrunk horizontally by a factor of 3.

In this case, we can state that the function was first stretched by 3.

PART 2

To move a function up, you add outside the function: f (x) + b is f (x) moved up b units. Moving the function down works the same way; f (x) – b is f (x) moved down b units.

We can also say that the function was shifted downwards by 1

ANSWER: OPTION C AND D

Answer:

a)The 80% of confidence interval for the Population 'μ' is

(29.9121 ,33.4879)

b) Margin of error of mean '  'μ' is  =  1.7879

Step-by-step explanation:

step(i):-

Given random sample 'n' =28

The mean of the sample x⁻ =31.7 min

The standard deviation of the sample's' =7.2

Step(ii):-

80% of confidence intervals:

The 80% of confidence interval for the Population 'μ' is determined by

\((x^{-} - t_{\frac{\alpha }{2} } \frac{s}{\sqrt{n} } , x^{-} + t_{\frac{\alpha }{2} } \frac{s}{\sqrt{n} } )\)

Degrees of freedom

γ = n-1 = 28-1 =27

\(t_{\frac{\alpha }{2} } = t_{\frac{0.20}{2} } = t_{0.1} = 1.314\)

The 80% of confidence interval for the Population 'μ' is determined by

\((x^{-} - t_{\frac{\alpha }{2} } \frac{s}{\sqrt{n} } , x^{-} + t_{\frac{\alpha }{2} } \frac{s}{\sqrt{n} } )\)

\((31.7-1.314 X \frac{7.2}{\sqrt{28} } , 31.7+1.314 X\frac{7.2}{\sqrt{28} } )\)

(31.7 -1.7879 , 31.7 +1.7879)

(29.9121 ,33.4879)

b)

Margin of error of mean is determined by

\(M.E = {\frac{t_{\frac{\alpha }{2} } s}{\sqrt{n} } }\)

\(M.E = {\frac{1.314 X 7.2}{\sqrt{28} } }\)

Margin of error =1.7879