Please answer I need help

Answer:

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

hope this helped and brainliest please

Answer: 21.4

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

Answer:

54.45in^2

Step-by-step explanation:

^2 is squared

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]

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

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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:

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:

hhhhhhhdjskafwlsgsksyskdkhdjdjjdjh

Answer:

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

Step-by-step explanation:

Answer:

25%

Step-by-step explanation:

8 am to 2 pm is 6 hours

6 is 25% of 24

Answer:

25%

Step-by-step explanation:

6 four times is 24 and 24 in half is 12 and 12 in half is 6 so you split it up equally you have a percentage of 25%

Answer:

216 dollars

Step-by-step explanation:

24yd*3= 72 feet*3= 216 dollars

if my answer helps please mark as brainliest.

Answer:

72$

Step-by-step explanation:

24*3.00

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:

you 3.15+5 es igual a 8 .15

Step-by-step explanation:

espero que te sirva

Answer:

it's c because it's the missing value

Answer:

2

Step-by-step explanation:

Answer:

-2: Start from 0 and go two steps to the left.

-4: Start from 0 and go four steps to the left.

-6: Start from 0 and go six steps to the left.

-8: Start from 0 and go eight steps to the left.

And the numbers are decreasing.

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:

8,6

Step-by-step explanation:

if its the sum, you just add them together.

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

[tex]x\leq 0[/tex]

fill the dot for including equality

point to left for "smaller than"

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.

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Answer:

answer is d) $20

Step-by-step explanation:

because 2x4=8 + 2x4=8 = $16 then 4 packets for $1 is $4 16+4= $20

Answer:

D) $20

Step-by-step explanation:

Wash plus dry = $4

$4 times 4 times = $16

$1 for one detergent times the four packets = $4

Total is $20

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:

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

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