i need help with this (15 points)

Answer:

c

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

The given function is a downward-facing parabola

The vertex of the function is at (-3, -4) and the function become 1-on-1 after x = -3.

1-to-1 at [-3, inf.)

And to find the inverse, swap positions of x and y:

[tex]f(x) = -\sqrt{-x-4}-3[/tex]

...and if you switch the order of the numbers, you get the function in choice C

Answer:

you 3.15+5 es igual a 8 .15

Step-by-step explanation:

espero que te sirva

Answer:

add 3,500 to 4,200 then divide or multiply or subtract by a number or add to find your answer just like my question

Step-by-step explanation:

Answer:

4x - 20 because x + x + x + x is 4x

hope this helped and brainliest please

Answer:

The cursive l stands for slant height. It is the altitude of the triangular side

Answer:

8,6

Step-by-step explanation:

if its the sum, you just add them together.

Answer:

A) -3x2 - 22x - 24

Step-by-step explanation:

Answer:

12 Faces

Step-by-step explanation:

Answer:

Step-by-step explanation:

12 faces is the answer !!

Answer:

No

Step-by-step explanation:

<3

[tex]x\leq 0[/tex]

fill the dot for including equality

point to left for "smaller than"

Answer:

Population density = 1569 persons per mile.

Step-by-step explanation:

Population density is a measure of how crowded or uncrowded a specific piece of land in a geographical location or country is.

Given the following data;

Total population, N = 56,474 people

Area, A = 36 mi

To find the population density;

Population density = N/A

Population density = 56474/36

Population density = 1568.72 ≈ 1569 persons per mile.

Therefore, the population density of Valdosta is 1569 persons per mile.

Answer:

1569 persons per mile

Step-by-step explanation:

Hope this helps

Answer:

A. 4

Step-by-step explanation:

For each of the values given for A, B, C, and D, you substitute the value in for m in the inequality.

2.5(4)+5 would have to be less than or equal to 25 in order for it to work.  Well, 2.5x4 is 10 and then if you add 5, it is 15.  15 is less than 25, so 4 is the only value that works.  The other numbers are too large if you substitute them into the equation.

Answer:

The sister is 25.5. The brother is 28.5.

Step-by-step explanation:

25.5 + 28.5 = 54.

The boy's age is 9.

The girl's age is 12.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Boy's age = x

Girl's age:

y = x + 3

Now,

x (x + 3) = 54

x² + 3x - 54 = 0

x² + (9 - 6) - 54 = 0

x² + 9x - 6x - 54 = 0

x(x + 9) - 6(x + 9) = 0

x - 6 = 0

x = 6

x + 9 = 0

x = -9 ( cannot be negative)

Now,

x = 9

Boy's age = 9

Girl's age = 9 + 3 = 12

Thus,

The boy's age and the girl's ages are 9 and 12.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ2

Answer: 22

Step-by-step explanation:

The linear equation to determine the cost to ship 8 packages is x=22.

Given that, Jeff's shipping service charges $8 for the first package and $2 for each additional package.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. The standard form linear equation is Ax+B=0.

Let the total charge be $x.

Now, x=8+(8-1)2

⇒x=8+14

⇒x=22

Therefore, the linear equation to determine the cost to ship 8 packages is x=22.

To learn more about the linear equation visit:

https://brainly.com/question/27664510.

#SPJ2

Answer:

54.45in^2

Step-by-step explanation:

^2 is squared

Answer:

f(x) = -2/15x + 14/15

Step-by-step explanation:

Slope = (2/3 - 4/5)/(2 - 1)

= (10/15 - 12/15) = -2/15

Plug in a known point (into y=mx+b) to find y-intercept:

4/5 = -2/15(1) + b

12/15 = -2/15 + b

b = 14/15

Formulate:

f(x) = -2/15x + 14/15

Answer:

Good job they are all right!

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Answer:

[tex]\frac{2}{3}x-13[/tex]

Step-by-step explanation:

Answer:

Step-by-step explanation:

sec²θ-6 = -4

sec²θ = 2

1/cos²θ = 2

cos²θ = ½

cosθ = ±1/√2 = ±√2/2

θ = π/4, 3π/4, 5π/4, 7π/4

Answer:

22

Step-by-step explanation:

Answer:

Depends on what math you are doing

Step-by-step explanation:

I believe in Trig you use radians while in Geometry you use degrees.

Answer:

hhhhhhhdjskafwlsgsksyskdkhdjdjjdjh

Answer: 21.4

Step-by-step explanation:

Answer:

The 99% confidence interval estimate of the population mean is between 125.3 and 137.7. This means that we are 99% sure that the true population mean, that is, the mean blood pressure of all second-year medical students, is in this interval.

Step-by-step explanation:

The first step is finding the sample mean, which is the sum of all 14 blood pressures, divided by 14. So

[tex]S = \frac{128 + 121 + 129 + 128 + 123 + 137 + 138 + 147 + 122 + 144 + 125 + 140 + 134 + 125}{14}[/tex]

[tex]S = 131.5[/tex]

Confidence interval:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.99}{2} = 0.005[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.005 = 0.995[/tex], so Z = 2.575.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

[tex]M = 2.575\frac{9}{\sqrt{14}} = 6.2[/tex]

The lower end of the interval is the sample mean subtracted by M. So it is 131.5 - 6.2 = 125.3

The upper end of the interval is the sample mean added to M. So it is 131.5 + 6.2 = 137.7

The 99% confidence interval estimate of the population mean is between 125.3 and 137.7. This means that we are 99% sure that the true population mean, that is, the mean blood pressure of all second-year medical students, is in this interval.

Add the rational expression

[tex] \sf \large{ \frac{3}{6x {}^{3} } + \frac{4x}{2x}}[/tex]

[tex] \sf \large{ \frac{1}{2x {}^{3} } + 2}[/tex]

[tex]\sf \large \purple{ = \frac{4x {}^{3} + 1 }{2x {}^{3} }}[/tex]