Nonsense will be reported!!​

Nonsense Will Be Reported!!

Answers

Answer 1

Answer:

 3y-2=10

Step-by-step explanation:

Given;

Which of the following does Not belong to the group?

2x > 5 - x

3(x-4) [tex]\leq[/tex] -23

3y - 2 = 10

a < 13a + 1

Solve;

Base on the given data, we can infer that "3y-2=10" does Not belong to the group. You can see that other have Python. Python has six comparison operators: less than ( < ), less than or equal to ( <= ), greater than ( > ), greater than or equal to ( >= ), equal to ( == ), and not equal to ( != ). While, "3y-2=10" doesn't have one.

As well as if you simplify/solve these other will be given as a fraction while "3y-2=10" answer is a whole number.

Solution of each given answer choice;

2x > 5 - x

Add x to both sides

2x + x > 5 - x + x

Simplify

3x > 5

Divide both sides by 3

[tex]\frac{3x}{3} > \frac{5}{3}[/tex]

x[tex]x=\frac{5}{3}[/tex]

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

3 ( x - 4) [tex]\leq[/tex] - 23

[tex]3\left(x-4\right)\le \:-23\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:x\le \:-\frac{11}{3}\:\\ \:\mathrm{Decimal:}&\:x\le \:-3.66666\dots \\ \:\mathrm{Interval\:Notation:}&\:(-\infty \:,\:-\frac{11}{3}]\end{bmatrix}[/tex]

Divide both sides by 3

[tex]\frac{3\left(x-4\right)}{3}\le \frac{-23}{3}[/tex]

Simplify

[tex]x-4\le \:-\frac{23}{3}[/tex]

Add 4 to both side

[tex]x-4+4\le \:-\frac{23}{3}+4[/tex]

Simplify

x [tex]\leq -\frac{11}{3}[/tex]

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

3y-2 = 10

Add 2 to both sides

[tex]3y-2+2=10+2[/tex]

Simplify

[tex]3y=12[/tex]

Divide both sides by 3

[tex]\frac{3y}{3}=\frac{12}{3}[/tex]

Simplify

y = 4

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

a>13a+1

[tex]a > 13a+1\quad :\quad \begin{bmatrix}\mathrm{Solution:}\:&\:a < -\frac{1}{12}\:\\ \:\mathrm{Decimal:}&\:a < -0.08333\dots \\ \:\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:-\frac{1}{12}\right)\end{bmatrix}[/tex]

Subtract 13a from both sides

[tex]a-13a > 13a+1-13a[/tex]

Simplify

[tex]-12a > 1[/tex]

Multiply both sides by -1 (reverse the inequality)

[tex]\left(-12a\right)\left(-1\right) < 1\cdot \left(-1\right)[/tex]

Simplify

[tex]12a < -1[/tex]

Divide both sides by 12

[tex]\frac{12a}{12} < \frac{-1}{12}[/tex]

Simplify

[tex]a < -\frac{1}{12}[/tex]

Hence, Now you can infer that "3y-2=10" does not belong to the group.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

~Learn with Lenvy~


Related Questions

Money deposited $8000 into an account 6 years ago. The account earned simple interest at a yearly rate. So far the total interest is $1200. What is the rate for the account.

Answers

Answer:

2.5%

Step-by-step explanation:

interest = principal * rate * time

1200 = 8000r6

1200 = 48000r

r = 0.025

Rate for account is 2.5%

What is the area of the parallelogram? Show your work. (5 points)

Answers

Answer:

6 squared feet

Step-by-step explanation:

The formula is  b X h

so we can see that the base is 8 and the height is 3/4

so now the equation would be

8 x 3/4 which is equal to 6

so the area of this parallelogram is 6

Select the correct answer.
Which rectangles are similar?
pls help

Answers

The rectangles are similar to DEFG and VWXY

We have given the rectangle ABCD, QRSP, EFGD, and WXYV.

We have the rectangle DEFG and WXVY.

What is the rectangle?

A rectangle is a quadrilateral with four right angles. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal; or a parallelogram containing a right angle. A rectangle with four sides of equal length is a square.

If we divide WV by 2 and VY by 2 then we get the side ED and DG

Therefore the given two rectangles are similar.

The rectangles are similar to DEFG and VWXY.

To learn more about the rectangle visit:

https://brainly.com/question/25292087

#SPJ2

Answer:

C

Step-by-step explanation:

I Just Took the Test.

angle just is a right angle. the measure of angle mkl is 30 degree , the measure of angle jkm is x what is the value of x

Answers

Answer:

25

Step-by-step explanation:

The length of a rectangle is twice its width.the length is 4 1/2 feet.what is the area of the rectangle

Answers

Answer:

10.125

Step-by-step explanation:

Length= 4 1/2 feet

Width= 2 1/4

Area=Length x width

Area=4.5 x 2.25

=10.125

Let me know if this is not correct.

Identify the center, the vertices, and the foci of the ellipses:

4x^2+y^2−16x−6y+21=0

Answers

Answer:

yasssssss

Step-by-step explanation:

Emma bikes 11.7 miles each day of the weekend and 6.5 miles each weekday.
How many miles will she have biked in 13 weeks?

Answers

She biked 422.5 miles in 13 weeks

ERROR ANALYSIS

Christopher was asked to solve the question below. Review Christopher’s work. Do you agree or disagree with Christopher’s answer? Explain why you agree or disagree. If you disagree, correct Christopher’s work.


Triangle RTS has a vertices R (10,0) S (3,4) And T(4,2). what is the resulting image of S' after a vertical transition two units down and a horizontal transition four units to the right?


Christopher's work

(x-2,y+4)

S' (3,4)

S' (3-2,4+4)

S' (1,8)

Answers

Answer:

I agree with cristafers work

Step-by-step explanation:

The new coordinates of S' will be located at (1, 8)  after translating 4 units right and 2 units down.

What is a graph?

A graph can be defined as a pictorial representation or a diagram that represents data or values.

Vertical shifting of a graph is done by adding any arbitrary constant to the function in shifting.

For example, If shift up by 1 unit,  add 1 to the function

If shift down by 4 units, subtract 4 from the function

Given that Δ RTS has a vertices R (10,0) S (3,4) And T(4,2)

The original coordinate of S is (3,4).

To determine the image of S' after a vertical transition two units down and a horizontal transition of four units to the right

The y-coordinate will increase by 4 if we move it to the right.

This will then become 4+4 =8.

If we shift it downward, it will become negative and read as -2.

This will then become 3-2 = 1.

So, the coordinate of S' will be located at (1, 8)

Hence, the new coordinates of S' will be located at (1, 8)  after translating 4 units right and 2 units down.

Learn more about the graph here:

brainly.com/question/16608196

#SPJ5

Graph the function y=6x−8.

Answers

Answer:

The graph can be seen in the attached image

Step-by-step explanation:

Step 1: Write the given function

[tex]y = 6x - 8[/tex]

Step 2: Plot the graph of the function

Done using a graphing calculator

A cube is 5 feet on each side. What is its volume?

125 ft 3
150 ft 3
25 ft 3
50 ft 3

Answers

Answer:

125 ft^3

Step-by-step explanation:

V = length x width x height so for a cube V= side^3

V= 5 x 5 x 5 or 5^3 = 125

Hope this helps!

4b. If m m
PLEASE HELP AND SHOW WORK PLEASE

Answers

Answer:

WAT = 28

Step-by-step explanation:

6x - 14 = 2x + 14

4x = 28

x = 7

WAT : 2(7) + 14 =

14 + 14 = 28

WAT = 28

I think you meant WAT not MAT right!???

HOPE THIS HELP

Farmer John has 24 peaches. He uses 6 peaches each to make his famous cobblers. How many cobblers did he make?

Answers

answer: 4, he made 4 cobblers. explanation: 24 peaches with 6 peaches per cobbler, 24 divided by 6 = 4.

Answer:

Farmer John made 4 cobblers.

Step-by-step explanation:

In order to figure out how many cobblers he made, you have to find x. The equation would be x=24÷6. 24 divided by 6 is 4, so x=4.

Find the Discriminant and describe the solutions for given quadratic 3² – 2x +3=0​

Answers

Answer:

Discriminant is 6.

Step-by-step explanation:

9-2x+3=0

-2x+9+3=0

-2x+12=0

-2x+12-12=0-12

-2x=-12

-2x/-2 = -12/-2

x=6

I need help ASAP on this question.

Answers

it’s the third graph
third graph is your answer.

How would I do this?

Answers

6^10/7^6 i believe is right

Help math exit ticket

Answers

Answer:

x = 15

Step-by-step explanation:

We can see that the angle with a measure of 37° and the angle with (9x + 8)° form a straight line, so they add up to 180°. This means that 37 + 9x + 8 = 180.

Step 1: Combine like terms.

[tex](9x)+(37+8)=180[/tex] [tex]9x+45=180[/tex]

Step 2: Subtract 45 from both sides.

[tex]9x+45-45=180-45[/tex] [tex]9x=135[/tex]

Step 3: Divide both sides by 9.

[tex]9x/9=135/9[/tex] [tex]x=15[/tex]

Therefore, x = 15!

A group of friends ordered two pizzas, one with pepperoni and one with mushrooms and green peppers. A plain pizza costs 9 dollars. Each extra topping costs 1 dollar. How much did the two pizzas cost?

Answers

1 pizza = 9 dollars

1 topping = 1 dollar

1. Let's gather the information

2 Pizzas

One pizza is a pepperoni

The other is a mushroom and green pepper

2. Make an equation for the question

x9 + y1 = ?

x = number of pizzas

y = number of toppings

3. Multiply x and y by the number given

2 x 9 + 3 x 1 = ?

2 x 9 + 3 x 1 = 21

Which means, the two pizzas had costed 21 dollars.

what is the sum of 4 and 2 raised to the third power

Answers

Answer:

216

Step-by-step explanation:

4+2=6

6^3=216

select all of the terms that apply to the shape.

Answers

Answer:

pentagon + irregular polygon

Step-by-step explanation:

has 5 sides + a regular pentagon has all angles equal, this doesn't.

(4,5) (0,8)
Slope intercept form

Answers

[tex](\stackrel{x_1}{4}~,~\stackrel{y_1}{5})\qquad (\stackrel{x_2}{0}~,~\stackrel{y_2}{8}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{8}-\stackrel{y1}{5}}}{\underset{run} {\underset{x_2}{0}-\underset{x_1}{4}}}\implies \cfrac{3}{-4}\implies -\cfrac{3}{4}[/tex]

[tex]\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{5}=\stackrel{m}{-\cfrac{3}{4}}(x-\stackrel{x_1}{4}) \\\\\\ y-5=-\cfrac{3}{4}x+3\implies y=-\cfrac{3}{4}x+8[/tex]

Find the weight in pounds of a 390 gram person.

Answers

Answer:

0.86 pound

Step-by-step explanation:

i just asked google:))

5 Recall Problem 3.1.4 where an archer hits a bull’s-eye with a probability of 0.09, and the results of different attempts can be taken to be independent of each other. (a) If the archer shoots a series of arrows, what is the probability that the first bull’s-eye is scored with the fourth arrow? 168 CHAPTER 3 DISCRETE PROBABILITY DISTRIBUTIONS (b) What is the probability that the third bull’s-eye is scored with the tenth arrow? (c) What is the expected number of arrows shot before the first bull’s-eye is scored? (d) What is the expected number of arrows shot before the third bull’s-eye is scored?

Answers

Answer:

(a). 0.0678.

(b). 0.01356

(c). 11.1

(d). 33.3

Step-by-step explanation:

So, we are given the following data or parameters that is going to help us or assist us in solving this particular problem or Question.

(1). We are given from the question that the archer to hit a bull’s-eye, the probability will be 0.09.

(2). "the results of different attempts can be taken to be independent of each other".

Therefore, let us delve right into the solution to the question.

(a). The probability that the first bull’s-eye is scored with the fourth arrow = P(a= 4) = P × ( 1 - P)^a -1.

P(a = 4) = 0.09 × (1 - 0.09) ^4 - 1.

P(a= 4) = 0.0678.

(b). The probability that the third bull’s-eye is scored with the tenth arrow = P(b= 10, y = 3).

P(b= 10, y = 3) = 36 (0.91)^7 × ( 0.09)^3 = 0.01356.

(c). The expected number of arrows shot before the first bull’s-eye is scored = 1/0.09 = 11.1.

(d). The expected number of arrows shot before the third bull’s-eye is scored = 3/0.09 = 33.3.

Jeffrey colors 20% of the shapes on a page. He colors 8 shapes. What is the total number of shapes on the page? There were total shapes on Jeffrey's page​

Answers

20% = 8
8*5=40
there’s 50 shapes in total
Answer

⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

Total = 40

⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

Step-by-step explanation:

⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

Based on the information given the total number of shapes on Jeffrey paper is  40 shapes.

⇒ Using this formula;

Total number of shapes=Number of shapes/Percentage of total sales

Which:

Number of shapes= 8

Percentage of total sales=20% or .20

Let's plug in the formula;

Total number of shapes=8/.20

Total number of shapes=40 shapes

⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

~[RevyBreeze]~

select the digit in the ten thousand place for 542,970​

Answers

Answer:

The digit in the ten thousand place is 4 in 542,970

Step-by-step explanation:

It’s 4
Hope this helps :)

Gareth has 15 total quarters and dimes with a total value of $2.10. A photo of a stack of quarters and a stack of dimes is shown. The system of equations can be used to solve for the number of each Gareth has. {Q+D=15 25Q+10D=210 Complete in the table to show the quantities and values of the coins Gareth has.

Answers

Answer:

4 Quarters and 11 Dimes

Step-by-step explanation:

In the first equation, we know that [tex]D=15-Q[/tex] If we plug this into the second equation, we get 25q+10(15-Q)=210. If we simplify this equation, we get 25q+150-10q=210, which can be simplified to 15q+150=210. And since 15q=60, q=4. Then, you subtract 4 from 15, to get 11 dimes. So, there are 4 quarters and 11 dimes. Hopefully, this helps!

GIVING BRAINLIEST!!!
(please show how you got the answers for the 2 thanks:)

Answers

Answer:

a) [tex]1\frac{1}{4}[/tex]

b) [tex]46.69[/tex]

Step-by-step explanation:

a) To evaluate the value of this long expression, we can split it up into parts that are easy to calculate. [tex]2\frac{1}{3}+\frac{1}{2}-\frac{1}{12}[/tex] is equal to [tex]2+\frac{4}{12}+\frac{6}{12}-\frac{1}{12}[/tex] and since the fractions have the same denominators, you can add the numerators and keep the denominators. This would result in [tex]2\frac{9}{12}[/tex], which is [tex]2\frac{3}{4}[/tex] simplified. So, now we know that the first parentheses are equal to [tex]2\frac{3}{4}[/tex]. Next, we have to calculate [tex]2(\frac{1}{3}+\frac{1}{4})[/tex]. Using the distributive property to expand, we reach [tex]\frac{2}{3}+\frac{2}{4}[/tex] and we bring them both with a denominator of 12 and add to get [tex]\frac{7}{6}[/tex]. Finally, the last square root is equal to [tex]\frac{1}{3}[/tex] because [tex](\frac{1}{3})^2[/tex] is equal to [tex]\frac{1}{9}[/tex]. To find our final answer we put all of our answers together in the expression [tex]2\frac{3}{4}-\frac{7}{6}-\frac{1}{3}[/tex]. Bring all of these fractions to a denominator of 12 to get: [tex]2\frac{9}{12}-\frac{14}{12}-\frac{4}{12}[/tex]. We combine to get [tex]1\frac{1}{4}[/tex].

b) Similar to the previous part, we can split this expression into two parts to make it more manageable; [tex]-4.9(-12+\sqrt{0.81})[/tex] and [tex](2.2)^2*1.59[/tex]. Once we find the value of each, we will get our final answer by subtracting the second from the first (as shown in the expression). [tex]-4.9(-12+\sqrt{0.81})[/tex] is equal to [tex]-4.9(-12+0.9)[/tex] which is [tex]-4.9*-11.1[/tex] which is [tex]54.39[/tex]. [tex](-2.2)^2*1.59[/tex] is equal to [tex]4.84*1.59[/tex] which is [tex]7.6956[/tex]. To get the final answer, we do [tex]54.39-7.6956[/tex] which is [tex]46.6944[/tex]. Rounded to the nearest hundredth, it is [tex]46.69[/tex].

Hope this helps :)

Which of the following lines is perpendicular to the line y = 5x +9? Y= -1/5x - 7 Y= 5x - 1/9 Y= -5x +1 Y= 1/5x + 9

Answers

Answer:

[tex]y=-\frac{1}{5} -7.[/tex]

Step-by-step explanation:

1) the rule: if two lines are y=k₁x+b₁ and y=k₂x+b₂ are perpendicular, then k₁*k₂=-1;

2) according to the rule above, the correct answer is y= -1/5 x-7.

Shelley’s pet food store sold one customer 5 peanut butter biscuits for $3. She sold another customer 7 beef treats for $4.20.

Write a proportion that compares the sales of these two items, and find the cross products.

The cross products are both equal to

Answers

Answer:

Its 21 on edenuity

Step-by-step explanation:

Answer:

21

Step-by-step explanation:

Simplify
X^2(y^3)^4/xy^5= x^a•y^b

A=
B=

Answers

Step-by-step explanation:

step in image

a = 1

b = 7

thank you

What is the unit rate for 768 57 m 41 1h?
Enter your answer, as a decimal, in the box.

Answers

Answer:

768.57 / 41.1 = 18.7 m per hr

Step-by-step explanation:

Other Questions
Barry wants to open a checking account. He wants online services, and a debit card. He is looking at the following tables of fees from his employer's credit union, EECU, and a local bank, E-town Bank:A 4-column table with 5 rows. Column 1 is labeled E E C U with entries monthly fee, non-sufficient funds fee, second copy of statement, network A T M usage, online services and debit cards. Column 2 is labeled Fee Table with entries 0 dollars, 28 dollars, 2 dollars, 2 transactions per month free after that 2 dollars each, free. Column 3 is labeled E-town Bank with entries monthly fee, non-sufficient funds fee, replacement statement copy, Network A T M usages, online services and debit cards. Column 4 is labeled Brief schedule of common fees with entries 2 dollars and 50 cents, 30 dollars, 5 dollars, 2 dollars each, free.Based upon past experience, Barry expects no overdrafts. He expects no 2nd copies of statements. Barry estimates that he will use network ATMs about 5 times a month with either bank. Barry decides in the end to choose EECU. Assuming that both banks provide the necessary services equally well, and based upon the tables of fees given above, how much can Barry reasonably expect to save annually by choosing EECU in this case over E-town bank?a.$72b.$78c.$144d.$24 2Which sentence should be included in a summary of the story?A Epimetheus trusted Zeus more than he trusted his brother.B Prometheus made humans as powerful as gods.Zeus gave Pandora the box but told her not to open it.DPandora opened the box to rebel against Zeus. Rabbits were introduced into Australia over 100 years ago for hunting purposes. They have since become a serious pest to farmers. Rabbit populations have increased so much that they displaced many native species of plant eaters. What is the most logical explanation for their increased numbers? Dialogue is conversation in a play, story, and so forth.TrueFalse 3 examples of inherited variation in dragon fruit Which are included in the five subfields of geography?Check all that apply.O A. Human geographyI B. Physical geographyO C. Human-environmental interactionD. Location An arrangement in which local businesses team up with schools, hiring students to perform jobs that use knowledge and skills taught in their school classes is called a _____. A. Vocational Education Program b. Cooperative Program c. Internship d. Service Learning Please select the best answer from the choices provided A B C D. Alcohol use/abuse leads to______ in the user/abuser. 1. Estelle went to the store and bought a box of crackers for $3.79 and a package of cheese for $4.59. About how much will this cost her? Why did the federal reserve allow interest rates to rise in 1979? to reduce borrowing costs to encourage inflation to reduce unemployment to fight inflation In order for our cells to metabolism N2 into 2NH3, a total of _____________ ATP is required. is the difference the point of origin and the point of destination? What is the significance of backing up data on a computer?Backing up data allows you to browse the Internet more quickly.Your computer will never become infected with a virus.A copy of your work can be saved in case the computer crashes.The web cache will be cleared regularly. What are nebulas, and how are they affected by gravity?. Which of the following are remote interior angles of Z1? Check all that apply.6/O A. 21B. 2.O C. 24OD. 25E 23F. 26 If the primary structure of the protein is changed, what will happen to a) the secondary structure and b) the tertiary structure of the protein Which best describes the claim of a compare-and-contrast paragraph? an umbrella statement that establishes the parts of the argument a statement that provides evidence for the main argument a summary of all details, statistics, and relevant facts an evaluation of the most important details and points answer this get brainliest If one strand of DNA reads: ATGCTC, what must the complementary strand of DNA be?* Which of these statements is true? * 4 points Doctors have not yet come up with an antibiotic that can kill harmful bacteria. Antibiotics can no longer kill any harmful bacteria because of resistance. Antibiotics are completely effective at killing all harmful bacteria. Some bacteria can become resistant to some antibiotics.