Algebra 1 - 15 pts + brainliest

Someones pls take this seriously and answer at least 4/5 or 5/5 of these questions

Answer:

-5/3 = x

x = 5/6 ± 5 sqrt(3)i /(6)

Step-by-step explanation:

0= 27x^3 + 125

Subtract 125 from each side

-125 = 27 x^3

Divide each side by 27

-125/27 = x^3

Take the cube root of each side

(-125/27 ) ^ (1/3) = x^3 ^ (1/3)

-5/3 = x

This is the only real answer

Let me know if you want the complex solutions

0= 27x^3 + 125 = ( 3x) ^3 + 5^3

a^3 + b^3 = (a+b) • (a^2-ab+b^2)

             0   = ( 3x+5) ( 9x^2 - 15x +25)

Using the zero product property

3x+5 =0      9x^2 - 15x +25 =0

3x = -5         9x^2 -15x = -25

x = -5/3       9(x^2 - 5/3x) = -25

Completing the square

                    (x^2 - 5/3x) = -25/9

                     x^2 - 5/3x +25/36 = -25/9 + 25/36

                    ( x-5/6) ^2 = -25/12

                    Take the square root of each side

                    sqrt( x-5/6) ^2 =± sqrt(-25/12)

                       ( x-5/6)  =± 5i/(2 sqrt(3))

                   Add 5/6

                       x = 5/6 ± 5i/(2 sqrt(3))

We cannot leave a sqrt in the denominator so multiply by sqrt(3)/sqrt(3)

                      x = 5/6 ± 5 sqrt(3)i /(2(3))

                     x = 5/6 ± 5 sqrt(3)i /(6)

Answer:

2

Step-by-step explanation:

Because half of 4 is 2

Answer:

8

Step-by-step explanation:

Answer:

13.2 C

Step-by-step explanation:

6am the temp is at -5.7

from 6am to 12pm is 18 hours apart

so if the temp rises at 1.05 every hour you multiply 1.05*18= 18.9

18.9-5.7=13.2

Answer:

Divide 2 by 6

Step-by-step explanation:

Answer : Divide 2 by 6

Step-by-step explanation:

2/6= .333

Answer:

[tex] s = \sqrt[3]{V} [/tex]

Length of each side of the tank = 15 ft

Step-by-step explanation:

A cube has equal length sides.

Formula for the volume of a cube is given as [tex] V = s^3 [/tex], where,

s = side length of the cube.

Given that a tank, in the shape of a cube, holds 3,375 ft³ of water, to derive an equation for finding the length of each side of the tank, make "s" the subject of the formula as follows:

[tex] V = s^3 [/tex]

Take the cube root of both sides

[tex] \sqrt[3]{V} = \sqrt[3]{s^3} [/tex]

[tex] \sqrt[3]{V} = s [/tex]

[tex] s = \sqrt[3]{V} [/tex]

The above equation would be used to find the length of each side of the tank as follows:

[tex] s = \sqrt[3]{3,375} [/tex] (substitution)

[tex] s = \sqrt[3]{3,375} [/tex]

[tex] s = 15 [/tex]

Length of each side of the tank = 15 ft

Answer: The answer should be j=26/9.

Answer:

that is no answer you don't need to type stuff if it is not for work/school

Answer:

14

Step-by-step explanation:

bako has spoken

Answer:

Irrational

Step-by-step explanation:

Since √3 is a non-terminating decimal (it repeats forever), it will be an irrational number.

Answer:

4

Step-by-step explanation:

Answer: 50 feet

Step-by-step explanation: There are 48 feet in 4 yards, and plus 2 feet would be 50 feet.

Answer:

14 feet

Step-by-step explanation:

3 feet = 1 yard

4 yards = 12 feet

12 feet + 2 feet = 14 feet

*Hope this helped!! : )*

Answer: Irrational I believe. If the number never ends then it’s irrational.

Answer:

f(-2)=g(-2)

Step-by-step explanation:

The formula to find the circumference of a circle is 2 x pi (π) x radius. The radius is half of the diameter. Therefore, since the diameter is 20, the radius is 10. Pi is equal to approximately 3.14.

3.14 x 10 x 2 is 62.8.

The circumference of the circle is 62.8 m.

Answer:

Step-by-step explanation: Rational, it's the ratio of two integers, 8 and 2.

Answer:

y = 3/4x - 2

Step-by-step explanation:

Slope-Intercept Form: y = mx + b

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step 1: Define

(0, -2) y-intercept

(4, 1) random point

Step 2: Find slope m

[tex]m=\frac{1-(-2)}{4-0}[/tex]

[tex]m=\frac{1+2}{4}[/tex]

[tex]m=\frac{3}{4}[/tex]

y = 3/4x + b

Step 3: Write linear equation

y = 3/4x - 2

Answer:

maybe 13 and 21

Step-by-step explanation:

because there all just adding

Add the two previous numbers for the next number:

1+ 1 = 2

2+ 1 = 3

3+ 2 = 5

5 + 3 = 8

Now add 5 and 8 : 5 + 8 = 13

Now add 8 and 13: 8 + 13 = 21

The two numbers are 13 and 21

Answer:

y=−252x

Step-by-step explanation:

Answer: 12x + 2y

Step-by-step explanation:

4x - 3y + 8x +5y

combine your like terms (4x + 8x) and (5y - 3y)

12x + 2y

Answer:

assuming you wanted the simplified version the simplified answer to that is 12x+ 2y

Step-by-step explanation:

Answer: 6x + 24

Explanation: In this problem, the 6 "distributes" through the parenthses, which means that it multiplies by each of the terms inside.

So we have 6(x) + 6(4) which simplifies to 6x + 24.

Answer: strong and negative

Step-by-step explanation:

Just took the test

Answer:

2

Step-by-step explanation:

[tex]\frac{8abc}{4abc}\\\\=\frac{4abc(2)}{4abc}\\\\=\frac{4abc}{4abc}(2)\\\\=1(2)\\\\=2[/tex]

Answer:

1/3

Step-by-step explanation:

Start at -4 and go over one to the right and up 3.

Answer:

g(3) = 0

Step-by-step explanation:

g(3) → x = 3 , in interval x≥ 3 , thus g(3) = - x + 3, that is

g(3) = - 3 + 3 = 0

Answer:

3 + 7 =10

Step-by-step explanation:

i have three cookies the tree cookies are choclate chip cookies and i have 7 more cookies they are oreos  i add all the cookies and i get 10                                       7 oreos + 3 choclate = 10 cookies

Answer:

15.8183

Step-by-step explanation:

just round it you can do that ;)

Answer:

d. 46

Step-by-step explanation:

46(students) × 40(kg) = 1840(total kg)

Answer:

9 x 8 = 72

This equation shows that 9 is a factor of 72 because 9 times something is 72 in this equation. Hope it helps!

Answer:

72 / 9 = 8

Step-by-step explanation:

This equation shows that 9 is a factor of 72 because the number at the end comes out as a whole number. If it wasn't a whole number, then 9 would not be a factor of 72. Hope this helps!

y= √x

Identify the equation of the function.

y= √-1+3

Answer:

b. y = square root x

Step-by-step explanation: