Simplify the expression.
2x(x + 3) - (12x - 4)

In distance, the penguin speed in mi/hr is 1.67mi/hr.

What is distance in math?

Distance = 1/3 mile

Time = 1/5 hour

Speed of the penguin = Distance/Time taken

Substitute the given data into the speed formula;

Speed = (1/3)/(1/5)

Speed = 1/3 * 5/1

Speed = 5/3

Speed = 1.67miles/hour

Hence the penguin speed in mi/hr is 1.67mi/hr

Learn more about Distance

brainly.com/question/15172156

#SPJ9

Answer:

56.6 estimated= 56

7.21 estimated=7

56/7= 8

pls mark as brainliest

Answer:

56.6 estimated= 56

7.21 estimated=7

56/7= 8

Step-by-step explanation:

The division property of equality informs us quite simply that if we divide both sides of an equation by the same number, then the resulting equation is unaltered. This is known as the distributive property of equality.

It is important to keep in mind that the value of a fraction is always equivalent to the numerator of the fraction if the denominator of the fraction is 1 and the numerator of the fraction is anything other than zero.

To speak in terms of fractions is to refer to numbers that are not whole.

The value of the numerator in a fraction is determined by whether or not the numerator is nonzero and whether or not the denominator is 1.

Discover more about division by reading:

https://brainly.com/question/21416852

#SPJ1

The percent of the people he paid claimed to be his friends is 67.5%

Given,

Mr. McCullough paid 80 people to say they were his friends.

and, After he paid them, 26 of them still did not claim to be his friend.

To find the percent of the people he paid claimed to be his friends

Now, According to the question:

Based on the given condition,

Formulate :

(80- 26) ÷ 80

Calculate:

(80- 26) / 80

= 54/80

Simplify

= 27/40

=0.675

Convert to percentage;

Multiply a number to both the numerator and the denominator

0.675 × 100/100

Calculate

67.5 / 100

= 67.5%

Hence, The percent of the people he paid claimed to be his friends is 67.5%.

Learn more about Percentage at:

https://brainly.com/question/28269290

#SPJ1

[tex]5 {x}^{2} - 28x + 23 = 0 \\ \\ 5 {x}^{2} - 23x - 5x + 23 = 0 \\ (5 {x}^{2} - 23x) - (5x - 23) = 0 \\ x(5x - 23) - (5x - 23) = 0 \\ (x - 1)(5x - 23) = 0 \\ \\ x - 1 = 0 \\ \\ or \\ \\ 5x - 23 = 0 \\ \\ \\ x = 1 \\ \\ or \\ \\ x = \frac{23}{5} [/tex]

ATTACHED IS THE SOLUTION

The expression 63a–35 factored as a product with a whole number greater than 1 is 7(9a - 5)

Algebraic expressions are defined as expressions made up of variables, terms, coefficient, constants, and factors.

The are also made up of arithmetic or mathematical operations which includes;

Factorization can be defined as the mathematical method of breaking a number down into similar and smaller numbers which are the products of the original number.

Given the expression;

63a–35

To factor expression, we need to find a common product of the values

We have;

7(9a - 5)

This cannot be further factorized

Hence, the factored form is 7(9a - 5)

Learn more about factorization here:

https://brainly.com/question/25829061

#SPJ1

In linear equation, He 3 boxes of pencils and 8 boxes of pens.

What are instances of linear equations?

He bought 3 boxes of pencils and 8 boxes of pens.

Multiples of 15: 15, 30, 45, 60, 75, 90, 105, 120

Mulitples of 40: 40, 80, 120

This means that there are 120 people at the conference, and that he bought 3 boxes of pencils (40x3=120) and 8 boxes of pens (15x8=120)

Learn more about linear equation

brainly.com/question/11897796

#SPJ1

we have the equation

Find out the first derivative

equate to zero the derivative, to find out the critical points

The value of cosine is zero when the angle is 90, 270 degrees (pi/2 and 3pi/2)

so

For x=pi/10

Find out the y-coordinate

Verify for x=3pi/10

If you have a right triangle, then you have 2 legs and 1 hypotenuse. The hypotenuse is the longest side across from the 90 degree angle. Pythagoras came up with the theorem for right triangles that states that the sum of the squares of the 2 legs is equal to the hypotenuse squared.

The solution of the inequality will be;

⇒ x > 4 or x < -10/3

What is Inequality?

A relation by which we can compare two or more mathematical expression is called an inequality.

Given that;

The inequality is;

|3x - 1| > 11

Now, The inequality is solved as;

|3x - 1| > 11

⇒ 3x - 1 > 11 or 3x - 1 < -11

Solve the inequality as;

⇒ 3x - 1 > 11

Add 1 we get;

⇒ 3x - 1 + 1 > 11 + 1

⇒ 3x > 12

Divide by 3;

⇒ x > 4

And, Solve the inequality as;

⇒ 3x - 1 < - 11

Add 1 we get;

⇒ 3x - 1 + 1 < - 11 + 1

⇒ 3x < -10

Divide by 3;

⇒ x < -10/3

Thus, Solution of the inequality will be;

⇒ x > 4 or x < -10/3

Learn more about the inequality visit:

https://brainly.com/question/22354790

#SPJ1

The 32° measure of A and the length of side a which is 17, and side B with length 11, using the law of sines, gives;

The law of sines can be stated as follows;

The ratio of the sine of an interior angle in an oblique triangle to the length of the side opposite the given angle, is a constant for the angles and their opposite sides of the triangle.

Mathematically, we have;

[tex] \frac{sin( A) }{a} = \frac{sin( B )}{b} =\frac{sin( C )}{c} [/tex]

Where;

Angle A is the angle opposite to side a

Angle B is the angle opposite to side b

Angle C is the angle opposite to side c

The given measure of angle A = 32°

The length of segment, a = 17

The length of segment, b = 11

Taking the given dimensions as the measurements of parts of a triangle, using sine rule, we have;

From the question, we have;

A = 32°

a = 17

b = 11

Which gives;

[tex] \frac{17}{sin( 32^{ \circ} ) } = \frac{11}{sin( B )} [/tex]

Therefore;

[tex] sin( B ) = \frac{11 \times sin( 32^{ \circ} ) }{17} [/tex]

Which gives;

[tex] \displaystyle{ B = arcsin \left( \frac{11 \times sin( 32^{ \circ} ) }{17} \right) \approx 20.1 ^{ \circ} }[/tex]

Learn more about the law of sine in trigonometry here:

https://brainly.com/question/15659539

#SPJ1

The population of the country in 1990 will be 274.7 million.

From the information given, the population of a country in 2015 was estimated to be 321.4 million people and this was an increase of 17% from the population in 1990.

Therefore,since let the population on 1990 be x. Therefore, this will be illustrated as:

x + (17% × x) = 321.4

x + 0.17x = 321.4

1.17x = 321.4

Divide

x = 321.4 / 1.17

x = 274.7

The population is 274.7 million.

Learn more about equations on

brainly.com/question/2972832

#SPJ1

4) The surface area of the square pyramid is; 145 ft²

5) The surface area of the rectangular prism is; 948 ft²

4) For the square pyramid, we see that the faces have been broken down into 4 equal rectangles and one square base.

We know that;

Area of triangle = 1/2 * base * height

Thus

Area of 4 triangles = 4(1/2 * 5 * 12) = 120 ft²

Area of square = 5 * 5 = 25 ft²

Total surface area = 120 + 25 = 145 ft²

5) The surface area of a rectangular prism is;

A = 2(wl + hl + hw)

Thus, Area = 2((20 * 3) + (20 * 18) + (18 * 3))

Area = 2(474)

Surface area = 948 ft²

Read more about Surface Area of regular shapes at; https://brainly.com/question/1310421

#SPJ1

Answer:

Slope = 0

Step-by-step explanation:

[tex]\text{Slope} = m = \dfrac {(y_{2} - y_{1})} {(x_{2} - x_{1})}[/tex]

where (x1, y1) and (x2, y2) are any two points on the line

Given he two points (4, 9) and (-6, 9)

m = (9 - 9)/(-6 - 4) = 0/-10 = 0

rise over run to find the slope

y = mx+b

we rose 1 and went over by 2

which means the equation is 1/2 x or 0.5x

The amount of water that Lucy should drink more is 750 ml.

From the information, Lucy between breakfast and lunch she pours 2 glasses of water each measuring 250ml. This will be:

= 250ml × 2

= 500ml

Between lunch and her dinner she pours 3 glasses also measuring 250 ml. This will be:

= 3 × 250ml

= 750 ml

Since Lucy wants to drink 2L of water, the amount needed to drink more will be:

= 2L - (750 + 500)

= 2000ml - 1250ml

= 750ml

Learn more about liters on;

brainly.com/question/2328085

#SPJ1

After thoroughly calculating we have come to find that, a number twice the sum of -17 and -14 is −62

To sum and complete mathematical operations, numerical values are needed. Numbers are used to represent numerical values, and they can also be used to represent them alphabetically. For instance, the number 22 can be expressed in writing or by using the alphabet 22. One more example is the number 3, which can be written as 3.

Numbers can take many different forms. Examples of opposites include odd and even, fraction and integer, rational and irrational, natural and whole, and many more. A few of the operations include arithmetic, algebra, and trigonometry.

Twice the sum of -17 and -14 is

2((-17) + (-14))

⇒ 2(-17 -14)

⇒ 2 × (-31)

⇒ −62

So, a number twice the sum of -17 and -14 is −62.

Learn more about numerical values

https://brainly.com/question/27922641

#SPJ10

Considering the definition of parallel line, the equation y= 1/3x - 2 is parallel to y=1/3x and it goes through (6,0).

A linear equation o line can be expressed in the form y = mx + b

where

Parallel lines are two lines that are always at the same distance from each other and that prolonged towards infinity never touch.

Two lines are parallel if they have the same slope and different y-intercepts.

In this case, the line is y=1/3x

where:

If two lines are parallel if they have the same slope, the parallel line has a slope of 1/3 and has a form of: y= 1/3x + b

The line passes through the point (6, 0). Replacing in the expression for parallel line:

0= 1/3× 6 + b

0= 2 + b

0 -2 = b

-2= b

Finally, the equation of parallel line is y= 1/3x - 2.

Learn more about parallel line:

brainly.com/question/7197064

brainly.com/question/11470863

brainly.com/question/7280013

#SPJ1

Answer:

L'(0,-2)

K' (3, -2)

J' (0,3)

Step-by-step explanation:

The tape diagram to represent the context regarding the number of gigabytes of data Julian can use while staying within his budget is Tape D.

A tape diagram simply has to do with a diagram that's used to illustrate the relationship between the numbers that are given.

In this case, Julian pays a flat cost of $52 per month and $3 per gigabyte and she wants to keep his bill at $58 per month.

This will be illustrated as:

let g = the number of gigabytes of data.

The expression will be:

52 + 3g = 58

The appropriate tape diagram is D.

Learn more about tape diagram in:

brainly.com/question/15656029

#SPJ1

Answer:

y = -2x + 11

Step-by-step explanation:

When two lines are parallel, their gradients are the same. So the gradient of the line parallel to this equation will be -2 as well.

Now we substitute values from this point to find the rest of the equation :

y = -2x + c

3 = -2(4) + c

3 = -8 + c  

c = 11

So the equation of the line parallel will be y = -2x + 11

Hope this helped and have a good day

Answer:

The distance between the two cities is 360 miles.

Step-by-step explanation:

Let value "a" equal the airspeed of the plane in still air, and let value "d" be the distance between the two cities. Then:

d/a+30=1.5

d=1.5a+45

and

d/a-30=2

d=2a-60

So

2a-60=1.5a+45

.5a=105

a=210

d/210-30=2

d=360

The distance between the two cities is 360 miles.

By using matrix operations, the resulting matrix is [tex]4 \cdot \left[\begin{array}{cc}1&2\\4&5\end{array}\right] - \left[\begin{array}{cc}1&2\\4&5\end{array}\right][/tex] is  [tex]\left[\begin{array}{cc}3&6\\12&15\end{array}\right][/tex].

In this problem we must simplify a combination of two matrices, this can be done by using properly the fundamental operations for matrices. Matrices are algebraic constructions characterized by a number of row and a number of columns. For instance, there is a matrix with two rows and three columns:

[tex]\left[\begin{array}{ccc}1&2&3\\4&5&6\end{array}\right][/tex]

There are two fundamental operations for matrices:

Sum - The respective elements of the same row and the same column of the matrix are summed:

[tex]\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] + \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] = \left[\begin{array}{ccc}2&4&6\\8&10&12\\14&16&18\end{array}\right][/tex]

Where C(i, j) = A(i, j) + B(i, j), i is the row index and j is the column index.

Scalar mutiplication - Every element of the matrix is multiplied by a scalar:

[tex]2 \cdot \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] = \left[\begin{array}{ccc}2&4&6\\8&10&12\\14&16&18\end{array}\right][/tex]

Where B(i, j) = k · A(i, j), k is the scalar.

Now we show the complete procedure to find the simplified expression:

[tex]4 \cdot \left[\begin{array}{cc}1&2\\4&5\end{array}\right] - \left[\begin{array}{cc}1&2\\4&5\end{array}\right][/tex]                         Given

[tex]4 \cdot \left[\begin{array}{cc}1&2\\4&5\end{array}\right] + (- 1) \cdot \left[\begin{array}{cc}1&2\\4&5\end{array}\right][/tex]               Definition of subtraction

[tex]\left[\begin{array}{cc}4&8\\16&20\end{array}\right] + \left[\begin{array}{cc}- 1&- 2\\- 4&- 5\end{array}\right][/tex]                     Scalar multiplication

[tex]\left[\begin{array}{cc}3&6\\12&15\end{array}\right][/tex]                                             Sum of matrices / Result

The simplifed form of the matrix is [tex]4 \cdot \left[\begin{array}{cc}1&2\\4&5\end{array}\right] - \left[\begin{array}{cc}1&2\\4&5\end{array}\right][/tex] is  [tex]\left[\begin{array}{cc}3&6\\12&15\end{array}\right][/tex].

To learn more on matrices: https://brainly.com/question/9967572

#SPJ1

[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]

[tex]\qquad \tt \rightarrow \:f{}^{-1}(x) = x +5 [/tex]

____________________________________

[tex] \large \tt Solution \: : [/tex]

We need to find the inverse of given function; f(x) = x - 5

[tex]\qquad \tt \rightarrow \: y = x - 5[/tex]

here, write x in terms of y.

[tex]\qquad \tt \rightarrow \: x = y + 5[/tex]

replace x with [tex]{\tt{{f}^{-1} (x)} } [/tex] and y with x, you will get your required inverse function.

[tex]\qquad \tt \rightarrow \: f {}^{ - 1} (x) = x + 5[/tex]

And it's already in slope intercept form

[tex]\qquad \tt \rightarrow \: y = mx + c[/tex]

where, slope (m) = 1 and y intercept (c) = 5

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

None of the given expressions are equivalent to 25.

What is an expression?

An expression, often known as a mathematical expression, is a finite collection of symbols that are well-formed in accordance with context-dependent principles. Numbers (operands), variable, operations, units, brackets, punctuation, and groups can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's sequence of operations and other features.

Many writers make a distinction between an expression and a formula, with the former designating a mathematical object and the latter a claim about such objects. However, in contemporary mathematics, and particularly in computer algebra, formulae are seen as expressions that, depending on the values supplied to the variables present in the expressions, can be evaluated to true or false.

The expressions are solved as follows

6-6-6-6-6-6 = -24

2-6 = -4

12-12 = 0

2-2-2-2-2-2 = -8

4-16 = -12

8-8 = 0

Hence, none of the expressions are equivalent to 25.

To know more about an expression, click on the link

https://brainly.com/question/17155901

#SPJ9

Answer:

length of I'J'= 4 units

length of IJ= 16 units

scale factor = 16/4 = 4

plssssss marks as brainliest

Answer:

16.25 pascal

Step-by-step explanation:

pressure=force/area

pressure=650/40

pressure=16.25 pascal

With 19.5% annual interest on a daily basis, the finance charge due on October 14 will be $623.

So, the finance charge due:

Therefore, with 19.5% annual interest on a daily basis, the finance charge due on October 14 will be $623.

Know more about interest here:

https://brainly.com/question/16134508

#SPJ13

The total time for the boxing match will be 9 minutes.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that a woman's boxing match consists of four 2-minute rounds, there is a 1-minute rest interval between each round.

The time of the match will be calculated as:-

Time = 2 x Total rounds + 1

Time = ( 2 x 4 ) + 1

Time = 8 + 1 = 9 minutes

Therefore, the total time for the boxing match will be 9 minutes.

To know more about an expression follow

https://brainly.com/question/25230781

#SPJ1