I am having trouble with this question, can someone help i labed them 1,2,3, and 4.

Answer:

a) 2x² - x + 3 = x(2x + 1) - 2x

<=> 2x² - x + 3 = 2x² + x - 2x

<=> 3 - x = - x

<=> 3 = 0

=> no solution

b) x/2 - x/3 - x/4 = 1/12

[tex] \frac{6x}{12} - \frac{4x}{12} - \frac{3x}{12} = \frac{1}{12} \\ \\ \frac{ - x}{12} = \frac{1}{12} \\ \\ = > - x = 1 \\ \\ \\ < = > x = 1[/tex]

=> the euqation has the solution x = 1

c) |x - 5| = 2|x|

=> x - 5 = 2x

or x - 5 = -2x

<=> x = -5

or 3x = 5

<=> x = -5

x = -5or x = 5/3

d) defined conditions: 2 - x 》 0

<=> x 《 2

we have:

[tex] \sqrt{x + 4} = 2 - x \\ < = > x + 4 = (2 - x) {}^{2} \\ < = > x + 4 = {x}^{2} - 4x + 4 \\ < = > {x}^{2} - 5x = 0 \\ < = > x(x - 5) = 0 \\ [/tex]

<=> x = 0 (because x 《 2)

e)

[tex] \sqrt{5} = \frac{1}{25 {}^{x} } \\ = > 5 = \frac{1}{25 {}^{2x} } \\ < = > 5.25 {}^{2x} = 1 \\ < = > 5.5 {}^{4x} = 1 \\ < = > 5 {}^{4x + 1} = 1 \\ = > 4x + 1 = 0[/tex]

<=> x = -1/4

Answer:

[tex]a) [x: - \infty < x < \infty ][/tex]

[tex]b)[x: - 1][/tex]

[tex]c) [x:- \frac{5}{3} ][/tex]

[tex]d) [x: 3, 0][/tex]

[tex]e) [x: - \frac{1}{4} ][/tex]

Answer:

8000 voters

Step-by-step explanation:

E is the difference between probability that is real and those which are estimated

Sd² = p(1-p)

When solve this, using the formula in the attachment,

0.95 = 1-0.2(0.2)²/n(0.02)

0.95 = 1 - 0.16/n(0.02)²

1-0.95 = 0.16/n(0.02)²

0.05 = 0.16/0.0004n

We cross multiply here

0.05 x 0.0004n = 0.16

0.00002n = 0.16

Divide through by 0.00002 to get n

n = 8000

This is the number of voters that should be polled

Answer:

110 students

Step-by-step explanation:

Let the total money raised = R ($)

Let the number of student = x

Proposed ticket cost to activity night = $5

(a) R = 5x

    x = R/5----------------------------------------------- (1)

(b)  Total money to be raised to pay for rent  of $200 and have a left over of  $ 350 is = $(200 + 350)

           R    = $ 550

Substituting the value of R in equation (1), the number of student (x) can be found:

x = R/5

 = 550/5

= 110 students

The student council must sell 110 tickets to students in order to achieve their goal.

Answer: 2,400 words

Step-by-step explanation:

Answer:

Will do!

I get the scam links too

Answer:

2

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

a proportional relationship must have a straight line when graphed and it must go through the origin (0,0)

Right off the bat we can eliminate answer choice C because the line is not straight

the answer is not a nor d

the line may be straight but it does not go through the origin therefore it is not a proportional relationship

B makes a straight line and the line goes through the origin therefore B is the answer

Answer:

-.5

Step-by-step explanation:

-5.5 + 5 = -.5

4.5 - 5 = -.5

Answer:

Answer A

Step-by-step explanation:

As the value of x increases by 2 the value of y increases by 4

Answer:

It should be a circle over 1 followed by an arrow going to the left

Step-by-step explanation:

The circle signifies it is not including, and the arrow going left shows all numbers less than 1

Answer:

3x squared + 2x as you multiply everything in the bracket by what's on the outside of the bracket so it would be 3x multiply by x which equals 3x squared and 2 multiply x which equals 2x

Answer:

3x^2+2x

Step-by-step explanation:

multiply each of the two terms by x using the distributive property

Answer:

$6.20

Step-by-step explanation:

5.75 * 2.40= 13.80

20-13.80= 6.20

$6.20

Answer:

184 ft²

Step-by-step explanation:

16x10=160

2x1/2x4x6=24

160+24=184

Answer:

2,2   2,7   5,7

Step-by-step explanation:

Answer:

B: 3, 5

Step-by-step explanation:

Lol, literally just took the test on Ap3x right now

Answer: d, eight and fifty-three thousandths

Step-by-step explanation:

The number before the decimal place in the units column is a whole number (8).

The numbers after (.053) are thousandths because the whole number (8.053) consists of 4 numbers the same way a 1000 does.

Sorry I found the last bit harder to put into words, but I hope it helps :)

Answer:

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

Step-by-step explanation:

[tex]\frac{4}{5} *\frac{15}{16} \\= \frac{4*15}{5*16}[/tex]

Reduce the 4 and 16 by dividing both by 4

[tex]=\frac{1*15}{5*4}[/tex]

Reduce the 15 and 5 by dividing both by 5

[tex]=\frac{1*3}{1*4}\\= \frac{3}{4}[/tex]

I hope this helps!

Answer:

y = -5/4x + 5

Step-by-step explanation:

the -5/4 is it went down 5 and 4 to the right

5 is the starting point then it went down

tell me if i am correct or wrong!

Answer:

1.0×10ft

Step-by-step explanation:

6^2+8^2

=36+64

=100

=√100

=10=1.0×10

Answer:

n < 42

Step-by-step explanation:

450 + 25n < 1500   (Has to be less than 1500)

25n < 1500 - 450

25n < 1050

n < 42

Answer:

n < 42

450 + 25n < 1500    

25n < 1500 - 450

25n < 1050

n < 42

Answer:

Step-by-step explanation:

i think its 104

Step-by-step explanation:

Given

- 4x + 5x = 11

or 5x = 11 + 4

or 5x = 15

or x = 15 /5

Therefore x = 3.

Hope it will help :)❤

Answer:

x=3

Step-by-step explanation:

-4+5x=11

+4 on both sides

5x=15

÷5 on both sides

x=3

Hope this helps =]

Answer:

V ≈ 16.333 in³

Step-by-step explanation:

Formula of the Volume of a Sphere: [tex]\frac{4}{3} \pi r^{2}[/tex]

V = [tex]\frac{4}{3}[/tex] × (3.5)²π

V = [tex]\frac{4}{3}[/tex] × 12.25π

V ≈ 16.333 in³

Answer:

66n-17m

Step-by-step explanation:

..................

Answer:

66n - 31m

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Distributive Property

Algebra I

Step-by-step explanation:

Step 1: Define

26n - 7m + 4(10n - 6m)

Step 2: Simplify

Answer:

the correct answer is D

explanation:

An irrational number can be expressed as a ratio of two integers. hope this helps

Answer:

A. Randomly select the sample in the lobby of the building so workers who do not enter the cafeteria can be included.

Step-by-step explanation:

Randomly select the sample in the lobby of the building so workers who do not enter the cafeteria can be included.

We have given that,

Natasha conducted a survey to determine how many of the 215 workers in her office building use public transportation to get to work. She surveyed 30 randomly selected workers who entered the office cafeteria throughout the day. Of the 30 workers surveyed, 9 used public transportation to get to work.

We have to determine that,

a change to Natasha's survey process would make the data more reliable.

Random sampling, or probability sampling, is a sampling method that allows for the randomization of sample selection each sample has the same probability as other samples to be selected to serve as a representation of an entire population.

Randomly select the sample in the lobby of the building

So workers who do not enter the cafeteria can be included.

Therefore the correct option is A.

Thus, Randomly select the sample in the lobby of the building so workers who do not enter the cafeteria can be included.

To learn more about the random sample visit:

https://brainly.com/question/24466382

#SPJ2

Answer:

Step-by-step explanation:

ans.................