call thrown vertically in the air reaches its peak height after 3.5 seconds. If its height as a function of time is given by h=-16t^2+bt+4, then which of the following is the values of b?
(1) 56
(2) -56
(3) -112
(4) 112

On solving the quadratic equation x² + 5x - 14 = 0 by using the quadratic formula , the solution is written as x = 2 , x = -7  .

The formula that is used to find the roots of the quadratic equation is called as quadratic formula and is written as ,

the general quadratic equation is ⇒  ax² + bx + c = 0, the the quadratic formula will be:

⇒ x = [-b ± √(b² - 4(a)(c))]/2a ;

the given equation is ⇒  x² + 5x - 14 = 0 ,

On comparing ,

we get that ; a = 1 , b = 5 and c = -14 ;

substituting  values in quadratic formula ,

we get ;

⇒ x = [-5 ± √(5² - 4(1)(-14))]/2(1) ;

solving further ,

we get ;

⇒ x = (-5 ± √(25+56))/2(1);

⇒ x = (-5 ± √81)/2;

⇒ x = (-5±9)/2 ;

On simplifying the equations separately ,

we have ;

⇒ 2x = -5 + 9    or    2x = -5 - 9   ;

⇒ we get , "x" as 2 or  "x" as -7  .   ;

Therefore , the roots of equations are "x ⇒ 2" or "x ⇒ -7"  .

The given question is incomplete , the complete question is

How do you solve  x² + 5x - 14 = 0  using the quadratic formula ?

Learn more about Quadratic Formula here

https://brainly.com/question/1542470

#SPJ4

According to the given degrees the number of  images are formed when two plane mirrors are placed at 50 is 6

Plane mirror is defined as the flat surface that produces an erect visual image of a real object where front and back are reversed

Here we need to identify the number of images are formed when two plane mirrors are placed at 50.

As we all know that the coordinate is known as the highest power of variables present in an equation.

Here we have given the formula that has been used to calculate the  images are formed is written as,

=> n = (360 / θ) - 1

Here we have the value of θ = 50, then the number of images are formed when two plane mirrors is written as,

=> n = (360 / 50) - 1

=> n = 7.2 - 1

=> n = 6.2

That is approximately is 6 images.

To know more about equation here.

https://brainly.com/question/10413253

#SPJ4

The equation y = -5x + 3 is a linear equation.

We know that a linear equation in two variables is nothing but an equation that can be written in the form Ax + By = C,  where A and B are real numbers and A ≠ 0, B ≠ 0.

The above form of equation is called the standard form of a linear equation in two variables.

Here we have been given an equation y = -5x + 3

y = -5x + 3

y + 5x = -5x + 3 + 5x             ........(Add 5x to each side)

y + 5x = (-5x + 5x) + 3           .......(Associative property of addition)

y + 5x = 0 + 3

5x + y = 3                              ........(Commutative property of addition)

Since we can write it in the standard form, Ax + By = C, then we have a linear equation.  

Learn more about an equation here:

https://brainly.com/question/649785

#SPJ4

Answer:

Step-by-step explanation:

A study reveals that young people aged 11 to 14 spend an average of 12.5% ​​of a 24-hour day in front of a screen.

70% of that time is spent in front of the television and the rest is spent in front of a computer.

How many hours and minutes do young people aged 11 to 14 spend on average each day in front of:

(a) a screen? (b) television? (c) a computer?

a screen

There are an equal number of roots as long as there are x powers. As a result of the four xs, the polynomial in this situation has four roots.

Finding the roots of the polynomial will allow you to solve it. P(x) = 0 is obtained by setting each factor to 0 and then calculating x. The polynomial equation can be solved by factoring. For every factor, a value of 0 should be used. 2x4 = 0; (x - 6) = 0; (x + 1) = 0 the answer to x, please.

It's important to note this even if there are only two genuine roots. The final two roots of this equation, which contain the integer I, are not real because I appears in both of them.

There are an equal number of roots as long as there are x powers. As a result of the four xs, the polynomial in this situation has four roots.

The complete question is,

Calculate the overall number of roots for each polynomial function using the factored form. f (x) = (x + 2)(x - 1) (x - 1) (x - 1) [x - (4 + 3i)] [x - (4 - 3i)].

To learn more about polynomials refer to:

brainly.com/question/2833285

#SPJ1

Answer:

40% profit

Step-by-step explanation:

$50 increase, and $50 is 40% of $125

Answer:

40%

Step-by-step explanation:

Sold price =SP = $ 175

Cost price = CP =$ 125

Profit = Sp - CP = 175 - 125 = $ 50

Profit = 40 %

Answer:

Steps in attached photo.

Step-by-step explanation:

Solution is in attached photo, to find f(x), we have to make y as the subject in terms of x, which means putting y on the left hand side of the equation.

The expression for the width is x (b) The perimeter of the rectangle in terms of x is x +8

You should understand that the perimeter of a rectangle is the distance round the rectangle

The given parameters that will help us to understand and solve the question are

Area = length * width

This implies that 2x +24 =4x

Collecting like terms =4 = 4x-2x

2x = 24

Therefore x = 24/2 = 12

b)  The perimeter is = L+W+L+W

Perimeter = 2L+w

Where W =x

Perimeter = 2(2x+24) +2(x)

The perimeter = 4x+48 +2x

Therefore the perimeter = 6x+48 or x+8

Study more about perimeter of rectangle on  https://brainly.com/question/29595517

#SPJ1

Hope it helps.

If you have any query, feel free to ask.

Another strategy that one could use to find 20% of the given number is to multiply the number by 1/5.

A percentage simply has to do with the a value or ratio which can be stated as a fraction of 100. It should be noted that when we want to we calculate a percentage of a number, we simply divide it and then multiply the value that is gotten by 100.

In this case, another strategy that one could use to find 20% of the given number is to multiply the number by 1/5. This will be:

= 20% × $400

= 1/5 × $400

= 80

Learn more about percentages on:

brainly.com/question/24877689

#SPJ1

The linear function that relates y to x is given as y = 2x

An equation consists of numbers and variables linked together by mathematical operations to form an expression.

A linear equation is in the form:

y = mx + b

Where m is the rate of change and b is the initial value

From the table, using the points (0, 0) and (1, 2):

y - 0 = [(2 - 0)/(1 - 0)](x - 0)

y = 2x

The linear function that relates y to x is given as y = 2x

Find out more on equation at: https://brainly.com/question/2972832

#SPJ1

Answer: -8

Explanation: Arithmetic operations have some precedence according to each other.

Firstly, begin with the operation inside of the parenthesis:

[tex]9 + 6 = 15[/tex]

The operation becomes:

-3 + (15) ÷ (-3)

Then, you should do the division part because the division has a precedence according to addition:

[tex]15 / (-3) = -5[/tex]

Finally, it becomes:

-3 + (-5) = -8

"-8" is the answer.

Two polynomials simply mean to sum the coefficients of the same powers, if these situations occur. the result of adding two polynomials will always be another polynomial.

A polynomial is described as an expression that consists of variables, constants, and exponents, which might be mixed with the use of mathematical operations along with addition, subtraction, multiplication, and department (No division operation by a variable).

In arithmetic, a polynomial is an expression that includes indeterminates and coefficients, that entail best the operations of addition, subtraction, multiplication, and fine-integer powers of variables. An instance of a polynomial of an unmarried indeterminate x is x² − 4x + 7.

Polynomials are sums of phrases of the form k⋅xⁿ, in which okay is any wide variety and n is a positive integer. for example, 3x+2x-5 is a polynomial. advent to polynomials.

To learn more about Polynomials visit here:

brainly.com/question/11536910

#SPJ4

Arctan or tan-1 are used to denote the inverse of Tangent.

The ratio of the perpendicular of the triangle and the base of the triangle with respect to the required angle is know as the tangent of the angle. Specifically, tan = (opposite side) / (adjacent side). The inverse tan formula is thus = tan-1[(opposite side) / (adjacent side)] according to the definition of inverse tan.

The reciprocal of the tangent is the cotangent. It is basically just the reciprocal of the tangent, it means that it can be written as the ratio of the base to the perpendicular.

Arccosine is another name for inverse cosine. It is the cos function's opposite. Also known as "arccos," occasionally. When two sides of a right triangle's length are known, it is used to measure the unknown angle.

To know more about Inverse function, visit,

https://brainly.com/question/3831584

#SPJ4

The slope of the new road is zero.

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx where, m is the slope

Given:

Take points from the Graph (5, 0) and (5, 4).

Slope of a line = m = tanθ

where θ is the angle made by the line with the x−axis.

For a line parallel to y−axis ,θ= π/2.

​

∴m = tan π/2 = undefined

The new road will therefore have 0° of inclination if it is perpendicular to D street because if they are perpendicular and D street is vertical, the new road is level and has 0° of inclination.

An horizontal line now has zero slope.

The new road has a zero slope as a result.

Learn more about slope here:

https://brainly.com/question/3605446

#SPJ1

The formula for the sum of all terms is [tex]S_n[/tex]= n(n+1)/2.

Sum most commonly means the whole of two or greater numbers delivered collectively; see addition. A summation additionally known as a sum is the result of arithmetically adding numbers or portions. A summation constantly includes a whole range of terms. There can be as few as two terms, or as many as one hundred, a thousand, or one million. some summations include infinitely many terms.

In arithmetic, the summation is the addition of a chain of any form of numbers, called addends or summands; the result is their sum or general. the combination of two or extra numbers, magnitudes, portions, or details as decided via or as if via the mathematical technique of addition: The sum of 6 and 8 is 14. a selected combination or overall, specifically with regards to money: The fees came to a giant sum.

To learn more about Sum visit here:

brainly.com/question/2059515

#SPJ4

Answer:

Step-by-step explanation:

plug in a 0 for y and simplify the equation

because 0*(constant of y)=0, so

x*(constant of x)=something, so

something/(constant of x)=x

ans is (x, 0)

The equation that has one solution will be 4m + 5 = 25. Then the correct option is B.

The equation that has infinitely many solutions will be 2x + 7 - 2x = 7. Then the correct option is C.

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

If the variable and constant get eliminated then the equation has infinitely many solutions. If the variable gets eliminated then the equation has no solution.

7. Let's check option B, then we have

4m + 5 = 25

4m = 20

m = 5

8. Let's check option C, then we have

2x + 7 - 2x = 7

2x - 2x = 7 - 7

The equation that has one solution will be 4m + 5 = 25. Then the correct option is B.

The equation that has infinitely many solutions will be 2x + 7 - 2x = 7. Then the correct option is C.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ1

Juan's observations are correct, but his incorrect observation is asymptote: x = 0

An exponential function is a mathematical function of the following form: f(x) = aˣ. where x is a variable, and a is a constant called the base of the function.

Given is a graph of an exponential function.

Juan's observations are :-

Initial value: –3

Base: 3

Asymptote: x = 0

Domain: {x | x > 0}

Range: {y | all real numbers}

Studying the graph, we can say his observations are correct but his comment on Asymptote: x = 0 is wrong because, the equation of the horizontal asymptote of the graph of is y = 0, which is the x-axis.

Other than, Asymptote: x = 0, all his comments are true.

Hence, the incorrect observation is asymptote: x = 0

Learn more about exponential function, click;

https://brainly.com/question/28596571

#SPJ1

Yes, 2x -3y =7 is a Linear equation as the highest power of the variable is linear which is one. Although it has two variables both have one power.

Linear equations are those which have the highest power of variable as one. But it can have n number of different variables. This given equation is called a linear equation with two variables.

Moreover, any expression is called an equation when the expression is equated to some value means the equation is equal to("=") to some other expression, Number, or Zero. And here 2x+3y is being equated to 7 which is a number, So the given expression is an equation.

However if the variables x and y both came together then it will not be linear as x*y will make the power two as one of x and one of y, Which w=makes the highest power of expression two.

Learn More about Linear Equations: https://brainly.com/question/2030026

#SPJ4

AxB represents the cross product (also known as the vector product) between two vectors A and B.

AxB is the symbol for the cross product (also known as the vector product) between two vectors A and B. A new vector is produced by a cross-product. The symbol for the mathematical definition of the vector product of two vectors is axb, and it is as follows. Where is the angle between a and b, axb = |a| |b| Sin.

The vector components are joined to create a vector in a vector product of vectors. A vector that is perpendicular to both of the given vectors is the result of adding two vectors together.

To learn more about cross product here:

https://brainly.com/question/29164170

#SPJ4

Answer:

33.56°

Step-by-step explanation:

Base angles of an isosceles triangle are equal.

Base is bisected by a line from top (vertex) of the triangle straight down to form a right angle.  Base, 100 cm, has 2 equal segments, 50 cm each.

Find h, height of the triangle:

h² = 60² - 50²

h = √1100 = 33.17

sin(f) = 33.17/60 = 0.553

m∠f = sin⁻¹(0.553) = 33.56°

Answer:

s=17

Step-by-step explanation:

just divide 34 by 2

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{2s = 34}[/tex]

[tex]\textbf{DIVIDE 2 to BOTH SIDES}[/tex]

[tex]\mathsf{\dfrac{2s}{2} = \dfrac{34}{2}}[/tex]

[tex]\textbf{SIMPLIFY it}[/tex]

[tex]\mathsf{s = \dfrac{34}{2}}[/tex]

[tex]\mathsf{s = 17}[/tex]

[tex]\huge\text{Therefore, your answer should be:}[/tex]

[tex]\huge\boxed{\mathsf{x = 17}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

150 years is time required to when the population of north Dakota is equals to the population of South Dakota .

let t is time in years after which the population of both city are equals

so the population of north dakota after t years is given by :

0.3 + 0.017 t ----(i)

Population of South dakota after t years is given by:

0.9 + 0.013 t  ----(ii)

for the population to be equal to each other equation (i) must be equal to equation (ii)

so ,  0.3 + 0.017 t = 0.9 + 0.013 t

=> 0. 004 t = 0.6

=>  0.6/0.004

=> 150

so 150 years is the time required to make population of both city equals.

To know more about linear equation click on below link:

https://brainly.com/question/11897796#

#SPJ4

The combination of streamers  and balloons can Liana purchase with $15.00 at the Party Palace is 8 and 43.

What is Linear equation ?

Linear equation can be defined as the equation having highest degree is one.

Given ,

Liana needs to purchase AT LEAST 50 party decorations. The Party Palace charges $0.50 per decorative streamer and $0.25 per balloon, including tax.

Let number of decorative streamer be x .

and number of balloons be y .

So, As per the question

The linear equation could be

0.50 x + 0.25 y = 15

Here its equals to the $15 as given that amount.

So,

The equation ,  0.50 x + 0.25 y = 15

So, in the options it is given that,

8 and 43

So lets substitute x = 8 and y = 43 in the equation ,

we get,

LHS = 0.50 * 8 + 43 * 0.25

= 4 + 10.75

14.75

< RHS

So, As LHS is less than RHS , liana can easily purchase with given $15.00 at the party place.

Hence, The combination of streamers  and balloons can Liana purchase with $15.00 at the Party Palace is 8 and 43.

To learn more about Linear equation from the given link.

https://brainly.com/question/29739212

#SPJ1

The expression is simplified to y⁹/12x². Option A

The index form of a number can be described as that number written as an exponential expression.

It is also seen as a single number that is raised to another number.

Other names for index forms are standard forms and scientific notation.

From the information given, we have that;

3x^⁻⁴y⁵/(2x³y⁻⁷)⁻²

expand the exponential bracket of the denominator by mutiplying the values

3x^⁻⁴y⁵/2x⁶y⁻¹⁴

Now, divide the expression into parts, we have;

3/-4 (x^⁻⁴y⁵/2x⁶y⁻¹⁴)

Since we are finding the quotient, subtract the exponents of the denominator from the numerators, we get;

3× -4(x⁻⁴⁺⁶y⁵⁻¹⁴)

Now, add or subtract the exponential values, we get;

-12(x⁻²y⁻⁹)

y⁹/12x²

Hence, the correct option is y⁹/12x²

Learn more about index forms here:

https://brainly.com/question/15361818

#SPJ1

The original cost of the tablet is $70.89 in the given algebraic equation.

A mathematical claim containing two equated algebraic expressions is known as an algebraic equation. When P and Q are polynomials, an algebraic equation has the general form P = 0 or P = Q. The term "multivariate equation" refers to an algebraic equation that has more than one variable.

Univariate equations are algebraic equations that only have one variable. Equations in algebra are balanced by definition. Due to this, the right and left sides of the equation will be equal.

Let the original cost be  x

then

15/100 = 24.99.x

x =  166.6

237.49 - 166.6

= $70.89

Thus, the original cost of the tablet is $70.89 in the given algebraic equations.

Learn more about algebraic equations

https://brainly.com/question/953809

#SPJ1

Full question?

Lucas bought a tablet that was on sale at a 15% discount on your supra case for $24.99 which is been a total of $237.49. Write an equation to find the original cost of the tablet?