need help asap please​

A value in the interval (-∞,-2√5] ∪[2√5,∞) will give the two real number solutions.

Given quadratic equation is:

[tex]x^{2} +bx+5=0[/tex]

Any equation of the form [tex]ax^{2} +bx+c=0[/tex] is called a quadratic equation where a≠0.

To have two real number solutions the discriminant of a quadratic equation should be greater than or equal to zero.

[tex]b^{2} -4(1)(5)\geq 0[/tex]

[tex]b^{2} -20\geq 0[/tex]

[tex]b^{2} -(2\sqrt{5} )^2\geq 0[/tex]

[tex](b+2\sqrt{5} )(b-2\sqrt{5} )\geq 0[/tex]

[tex]b\in(-\infty,-2\sqrt{5} ]\cup [2\sqrt{5} ,\infty)[/tex]

Hence, a value in the interval (-∞,-2√5] ∪[2√5,∞) will give the two real number solutions.

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Answer:

36 sq in

Step-by-step explanation:

First find the area of the square: 12*12 = 144 in^2

next find the area of 1 circle, im assuming the circles are tangent to the sides of the square and to each other, so each circle has a radius of 12/4 or 3in, the area of each circle is then pi*3^2 or 27 in^2

the total area of the 4 circles is then 27*4 = 108in^2

144-108=36in^2

Answer:

[tex]583 - 37 = 546[/tex]

Answer:

546

Step-by-step explanation:

subtract the numbers Frome each other

hey...

hope it really helps...!!!

The angle measure of the piece is the amount of space left  between the vertices

The angle of the piece left over after cut A is 35 degrees

In cut A, we have the following expression

x + 55 = 90

Subtract 55 from both sides to determine the measure of angle left

x = 35

Hence, the angle of the piece left over after cut A is 35 degrees

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Answer:

sparkline

Step-by-step explanation:

A line chart that has no axes but is used to provide information on overall trends for time series data is called a sparkline.

The statements true are B)The data is best represented by a quadratic model. and C) If the price is $5 per unit, the expected profit is approximately $4,686.

We have the Information regarding the data is given below

Expected profit is the probability of receiving a certain profit times the profit, and the expected cost is the probability that a certain cost will be incurred times the cost.

The data should be best presented by  the quadractic model.

In the case when the price should be $5 per unit so the profit should be $4,686.

Therefore,option B and option C these two options are correct.

Theefore the  true  statements are,The data is best represented by a quadratic model. and If the price is $5 per unit, the expected profit is approximately $4,686.

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Answer:

b,c

Step-by-step explanation:

trust

Answer:

option 4

using absolute value, the 2 line thing (||) the order would be 2,3,5,7,9 which is least to greatest

Answer:

How often do you recycle?

Step-by-step explanation:

Statistical questions are questions where results may vary meaning that depending on who you ask this question you can get very different but measurable answers.

Answer: Its 999,999

Step-by-step explanation:

You just take your chance of losing and minus your chance of winning to it.

Step-by-step explanation:

You can say that a function take input and outputs something back. for example, let's y = X + 3. You may think this is a equation.Yeah it is but it is also a function. The original function notation is for example f(X) = X+3.But we set y = f(X) so it turn out to be y=X+3.Basically these two have the same meaning.X is a input in the function above.If you set X= 5,the input is now 5 and you will get a kinda output of 5+3 =8.so y= 8 or f(5) = 8.That's all.You can check out more on the internet.

Answer:

12.56 in squared

Step-by-step explanation:

the formula for area is      radius x radius x pi

So you do 2x2x3.14

(I would just do 4x3.14)

And then you get 12.56

Answer:

The top right is the only incorrect one

Step-by-step explanation:

When money comes directly out of your bank account that is considered debit, not credit.

Answer:

4 1/10

Step-by-step explanation:

:) Hope this helps

Answer:

option (a)

Step-by-step explanation:

0,pie is the answer

Answer:

53.4

Step-by-step explanation:

We first do

55 + 57 + 60 + 45 + 50

55 +57 + 45 + 110

57 + 100 + 110

57 + 210

267

Now we do 267 divided by 5.

This is 53.4

Answer:

Options: 1, 4 & 6

Step-by-step explanation:

Yes:

1. [tex]-1(x-1)^{2} +9=-1(x^{2} -2x+1)+9=-x^{2} +2x-1+9=-x^{2} +2x+8[/tex]

4. [tex]-x^{2} +2x+8[/tex]

6. [tex](x+2)(4-x)=2x-x^{2} +8=-x^{2} +2x+8[/tex]

No:

2. [tex]-(x-9)^{2} +1=-(x^{2} -18x+81)+1=-x^{2} +18x+81+1=-x^{2} +18x+82[/tex]

3. [tex]x^{2} +2x-8[/tex]

5. [tex](x+2)(x-4)=x^{2} -2x-8[/tex]

Hope this helps

Answer:

6 cm and 18 cm.

Step-by-step explanation:

We are given that:

The perimeter of any rectangle is:

To determine the dimensions of the rectangle, we need to determine the value of "x". The word "dimensions" are the length and the width of the rectangle. Since the question has not stated the length and width, we can consider the length as x and the width as 3x.

It is also given that the perimeter of the rectangle is 48 cm. Thus, the formula with the length and the width substituted is equivalent to 48 cm.

It is required for the expression on the left hand side to be simplified. This can be done by combining like terms.

Then, we can divide 8 both sides to isolate the coefficient from "x". Once the coefficient of "x" is isolated, we will obtain the value of "x".

Finally, substitute the value of "x" into the length and the width. We considered the length to be "x" and the width to be "3x". Therefore,

Thus, the dimensions of the rectangle are 6 cm and 18 cm.

Now

B=6

L=3(6)=18

The distance between the points (3,4) and (-2,-1) is found being 5√2 units.

The shortest distance(length of the straight line segment's length connecting both given points) between points ( p,q) and (x,y) is:

[tex]D = \sqrt{(x-p)^2 + (y-q)^2} \: \rm units.[/tex]

We've to find the distance between two points

(p,q) = (3,4)

and (x,y) = (-2, -1)

We get it as:

[tex]D = \sqrt{(x-p)^2 + (y-q)^2}\\\\D = \sqrt{(-2-3)^2 + (-1-4)^2} \\\\D = \sqrt{5^2 + 5^2} = 5\sqrt{2} \: \rm units[/tex]

Thus, the distance between the points (3,4) and (-2,-1) is found being 5√2 units.

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Answer:776

Step-by-step explanation:

77

Brianna earned a total of approximately $400,652 over the 5 years.

A grouping of variables, symbols, and/or numbers used to represent a mathematical quantity or relationship is known as an expression in mathematics. Expressions might be straightforward with just one number or variable or complex with many terms, operations, and functions.

To find the total amount of money Brianna earned over 5 years, we need to calculate her salary for each of the 5 years and add them up.

In the first year, Brianna's salary was $77,000.

In the second year, her salary increased by 2%, so it became:

$77,000 + 0.02 x $77,000 = $78,540

In the third year, her salary increased by another 2%, so it became:

$78,540 + 0.02 x $78,540 = $80,106.80

In the fourth year, her salary increased by 2% again, so it became:

$80,106.80 + 0.02 x $80,106.80 = $81,700.94

In the fifth and final year, her salary increased by 2% once again, so it became:

$81,700.94 + 0.02 x $81,700.94 = $83,303.11

To find the total amount of money Brianna earned over the 5 years, we just need to add up her salaries from each year:

$77,000 + $78,540 + $80,106.80 + $81,700.94 + $83,303.11 = $400,651.85

Therefore, Brianna earned a total of approximately $400,652 over the 5 years.

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Answer:

Option c

Step-by-step explanation:

-7 + (19 + 5) = (-7 + 19) + 5

LHS = -7 + (19+5)

       = -7 + 24

       =  17

RHS = (-7 + 19) + 5

       = 12 + 5

        = 17

LHS = RHS

associative property of addition: When three or more numbers are added, the result remains same regardless how the numbers are grouped

Answer:

C

Step-by-step explanation: I think it is right but I don't know I am sorry if I get it wrong!

The equation which shows one way to determine the factors of x3 4x2 5x 20 by grouping is x²(x + 4) + 5(x + 4).

The factor of a polynomial is the terms in linear form, which are, when multiplied together, give the original polynomial equation as a result.

The polynomial equation given in the problem is,

[tex]x^3 +4x^2 +5x+ 20[/tex]

Take out the greatest common factor from the first two term which is x^2 and from the last two terms which is 5 as,

[tex]x^2(x +4)+5(x+ 4)\\[/tex]

Simplify it further,

[tex](x+4)(x^2+5)[/tex]

Thus, the equation which shows one way to determine the factors of x3 4x2 5x 20 by grouping is x²(x + 4) + 5(x + 4).

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Answer:

6

Step-by-step explanation:

Permutation formula:

nPr=(n!)/(n-r)!

applying the formula

3P3= (3!)/(3-3)!

3!/0!

6/1

6

Answer: D

Step-by-step explanation: to know symmetry you must draw line from vertices of the figure ad the triangle has 3 vertices so you will draw 3 lines

One graph appears skewed, and one graph appears symmetrical because the interval 2 stem and leaf plots is not consistent, statement third is correct.

It is defined as the numerical data representation in the graph with the help of a bar without space. The histogram gives an idea about the data's approximate distribution.

The number line goes from 8 to 72 in incremental of 8, such as:

8, 16, 24, 32, 40, 48, 56, 64, 72

The whiskers range is from 8 to 71 and

Box ranges from 23 to 47.

The line divides the box at 38.

The mid-point of the line plot is at 40 and at first inspection, the stem and leaf plot appears to be accurate. In the stems, however, 5 is omitted entirely, giving the pattern a symmetrical rather than skewed appearance.

Thus, one graph appears skewed, and one graph appears symmetrical because the interval 2 stem and leaf plots is not consistent, statement third is correct.

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Answer:

Radius: 12 inches

Height: 30 inches

Diameter: 24 inches

Step-by-step explanation:

Radius: 12 inches

Height: 30 inches

Diameter: 24 inches

Answer:

160

Step-by-step explanation:

[tex]the \: value \: in \: angle \: e = 180 - (90 + 60) \\ = 180 - 150 = 30degrees \: \\ using \: sinerule \: to \: find \: x \\ \frac{sin(90)}{x} = \frac{sin(30)}{80} \\ making \: x \: subject \: \\ x = \frac{sin90 \times 80}{sin30} \\ x = \frac{1 \times 80}{0.5} \\ x = \frac{80}{0.5} \\ x = 160[/tex]

Answer: x=160

Step-by-step explanation:

Answer:

y=-13

Step-by-step explanation:

if x=-4 and y=3x-1,

plug the value for x into the y= equation:

y=3(-4)-1

multiply through distributing 3

y=-12-1

y=-13

hope this helps <3

Answer:

New value - Old value / Old value (I memorize it as NOO)

3-2/2

1/2 convert to a percentage = 50 percent