Please help 300 points

Please Help 300 Points

Answers

Answer 1

Answer:

4x + 9 ≥ 0

Step-by-step explanation:

The inside of the square root, the radicand, cannot be negative.

It can only be zero or positive.

Zero or positive is also described as being greater than or equal to 0.

Set the radicand to be greater than or equal to zero.

4x + 9 ≥ 0

Answer 2

Answer:

4x+9>=0

Step-by-step explanation:

The domain of a square root is that it can’t be less than 0. So we have the equation 4x+9>=0.


Related Questions

Determine the value of y, if x is -1. y= | x |-4

Answers

y=|-1|-4
The absolute value of -1 is 1
y=1-4
y=-3

Find the distance between the two points (1, -4) and (5, 3). Give an exact answer in
terms of a square root.

Answers

Answer:

A lovely answer of : [tex]\sqrt{17}[/tex]

For those of you who use a dark theme : square root of (17)

And a short Explanation:

Use the Pythagorean theorem to find the result

Jackie wants to meet up with her friend who lives 3 miles away and bring him the cookies she baked. she and her friend start moving toward each other at the same time. Jackie's walking speed is 3mph, and her friend's biking speed is 12mph. 4 minutes after Jackie left the house, her mom notices that she forgot the cookies on the kitchen table. She sends Jackie's brother to bring them to Jackie. How fast should Jackie's brother travel to catch up with Jackie before she meets her friend?

Answers

Answer:

First, find the time when Jackie and her friend meet.

Using:

[tex]\sf s=ut+\dfrac12at^2[/tex]

where:

s = displacementu = initial velocitya = accelerationt = time (in hours)

Jackie and her friend are not accelerating, so a = 0, which means the formula can be reduced to:

[tex]\sf s=ut[/tex]

Create equations

Jackie:  [tex]\sf s_1= 3t[/tex]

Friend:  [tex]\sf s_2 = 12t[/tex]

As the distance covered by Jackie and her friend at the time they meet equals 3 miles:

[tex]\sf s_1+s_2=3 \ miles[/tex]

[tex]\sf \implies 3t + 12t = 3[/tex]

[tex]\sf \implies 15t = 3[/tex]

[tex]\sf \implies t = 0.2 \ hr[/tex]

[tex]\sf \implies t=0.2 \times 60=12 \ mins[/tex]

Therefore, they meet 12 mins after they both start moving.

3 mph = 3 ÷ 60 = 0.05 miles per min

12 mph = 12 ÷ 60 = 0.2 miles per min

Therefore,

Jackie traveled:  0.05 x 12 = 0.6 miles

Her friend traveled: 0.2 x 12 = 2.4 miles

when they meet.

To find the speed Jackie's brother must walk to catch up with her at the same time she meets her friend, use s = 0.6 miles (as this is the distance Jackie walked) and t = 12 - 4 = 8 mins (since he left 4 mins after Jackie left):

[tex]\sf s=ut[/tex]

[tex]\sf \implies u = \dfrac{s}{t}[/tex]

[tex]\implies \sf u = \dfrac{0.6}{8}[/tex]

[tex]\implies \sf u = 0.075 \ miles \ per \ min[/tex]

[tex]\sf \implies u = 0.075 \times 60 = 4.5 \ mph[/tex]

So Jackie's brother needs to walk faster than 4.5 mph to catch up with Jackie before she meets her friend.

(If he walks at 4.5 mph, he will catch up to Jackie at the instant she meets her friend.  If he walks slower than 4.5 mph, he will not catch up with Jackie before she meets her friend).

Write the product as a product of a whole number and a unit fraction
3 * 3/8

Answers

Answer:

9/8 or 1 1/8

Step-by-step explanation:

3*3/8

3/1*3/8

numerator times numerator and denominator times denominator:

3×3/1*8 = 9/8 or 1 1/8

Need help picture below

Answers

Qps is the answer as the arc has full rotated and touched from q p and s

how many one third cup servings are in 16 cups

Answers

it’s 48 because you need 3, 1/3 cups to make 1 full cup so 3 times 16 is 48!

I need help on my work or I get 0 percent

Answers

Answer:

B and E

Step-by-step explanation:

E is 3/4 8 times (this is just simple multiplication) and B is 3/4 8 times just shorter. Simplified if you will.

Please help me with this!!

Answers

Answer:

A, B, D, F

Step-by-step explanation:

Given expression: [tex]8^{\frac23}[/tex]

Apply exponent rule [tex]a^{bc}=(a^b)^c[/tex]

[tex]\implies 8^{\frac23}=(8^2)^{\frac13}[/tex]

Apply exponent rule [tex]a^{\frac{1}{n}}=\sqrt[n]{a}[/tex]

[tex]\implies (8^2)^{\frac13}=\sqrt[3]{8^2}[/tex]

Therefore, option A

Apply exponent rule [tex]a^{bc}=(a^b)^c[/tex]

[tex]\implies 8^{\frac23}=(8^{\frac13})^2[/tex]

Apply exponent rule [tex]a^{\frac{1}{n}}=\sqrt[n]{a}[/tex]

[tex]\implies (8^{\frac13})^2=(\sqrt[3]{8})^2[/tex]

Therefore, option B

Apply exponent rule [tex]a^{bc}=(a^b)^c[/tex]

[tex]\implies 8^{\frac23}=(8^{\frac13})^2[/tex]

As [tex]8^{\frac13}=2[/tex]

[tex]\implies (8^{\frac13})^2=2^2[/tex]

Therefore, option D

Apply exponent rule [tex]a^{bc}=(a^b)^c[/tex]

[tex]\implies 8^{\frac23}=(8^{\frac13})^2[/tex]

As [tex]8^{\frac13}=2[/tex]

[tex]\implies (8^{\frac13})^2=2^2[/tex]

[tex]\implies 2^2=4[/tex]

Therefore, option F

which pair of pairs of polygons are congruent.

Answers

Answer:

bottom left. (arrow shaped)

Step-by-step explanation:

congruent shapes are the same size and shape

How to be good at math???

Answers

Answer:

Step-by-step explanation:

To get good at math is to pay attention to the formulas and quiz yourself with what ever your learning over and over until you get it.

Practice, ask questions, pay attention to all the small details.

I think the best place to start would be algebra, I’ve used it in every math class since passing, and it would actually be useful in the real world.
Khan academy is one of the best resources available, they have videos on pretty much any math topic.
You watch a video, then do a few practice problems, and if you need help with the problems there’s a button that shows you the entire problem solving process. You can review and practice as much as you need, and then at the end of each topic they have a practice quiz.

Besides that I think math homework is a great way to get better. If you make mistakes on the homework you will loose less points than if you make mistakes on the test/quiz. Also, going over your mistakes is key.

If you haven’t had any good math teachers it can be very hard to learn these topics, but take it at your own pace.
With math you have to understand before you move on, or else it’s like trying to read words without knowing the alphabet.
Keep practicing, you can do it!

can someone solve what is n/n^3

Answers

Answer:

Alex = No B.

Step-by-step explanation:

1) Use Quotient Rule: [tex]\frac{x^{a} }{x^{b} } =x^{a-b}[/tex]

[tex]n^{1-3}[/tex]

2) Simplify 1 - 3 = 2

[tex]n^{-2}[/tex]

3) Use Negative Power Rule: [tex]x^{-a} =\frac{1}{x^{a} }[/tex]

[tex]\frac{1}{n^{2} }[/tex]

Rewrite the following without an exponent. (9/5)^-1

Answers

Answer:

5/9

Step-by-step explanation:

What we have here is the reciprocal of (9/5).  Inverting (9/5) results in (5/9), which is the desired result.

find measure of the missing angles and justify your answer with postulates and theorems.

Answers

Answer:

Step-by-step explanation:

SOMEONE PLSSSSSS HELP ME SOLVE THIS FAST
I WILL MARK BRAINLIEST

Answers

Answer:

D

Step-by-step explanation:

I calculated the area for 54 feet and then for 0.5 feet using the equation [tex]A=\sqrt{\frac{3}{4} }a^{2}[/tex] , where a is the size and then divided first area by second area

The cards below have a mean of 25. What is the missing number?: ? 19, 22, 31

Answers

Answer: Its 28.

Step-by-step explanation:

The missing number in the card s 28

How to determine the missing number?

Represent the missing number with x.

So, we have:

x, 19, 22 and 31

The mean of a dataset is:

Mean = Sum/Count

So, we have:

25 = (x + 19 + 22 + 31)/4

Multiply both sides by 4

100 = x + 19 + 22 + 31

Evaluate the sum

100 = x + 72

Subtract 72 from both sides

x = 28

Hence, the missing number is 28

Read more about mean at:

https://brainly.com/question/14532771

convert 5'5 into meters​

Answers

It will be around 1.6metres

hope it helps

Answer:

1.65 meters

Step-by-step explanation:

1 ft = 0.3048 meters

just multiply

Evan walked 2 1/8 miles to his aunts house. He has already walked 6/8 mile. How much farther does Evan have to go?

Answers

Rewrite 2 1/8 as 17/8

Now subtract:

17/8 - 6/8 = 11/8 = 1 3/8


answer : 1 3/8 miles left

A number w minus 3 is less than or equals to 10

Answers

Answer:

Step-by-step explanation:

A number w minus 3 (w - 3) is less than or equal (≤) to 10

w - 3 ≤ 10

   + 3  + 3

w ≤ 13

Hope this helps!

3(2x + 1) = 7x-2
What is x

Answers

Answer:

x=-5

Step-by-step explanation:

3(2x+1)=7x-2

6x+3=7x-2

6x-7x=-2-3

x=-5

3(2x + 1) = 7x-2

3*2x+3*1=7x-2

6x+3=7x-2

6x-7x=-3-2

-1x=-5

x=5

pieces of chalk are stacked in a pile. part of the pile is shown. the bottom row has 15 pieces of chalk, and the top row has 6 pieces of chalk. each row has on less piece of chalk than the row below it. how many pieces of chalk are in the pile?

Answers

To answer the question, you need to count backwards from 15 to 6 and add up the pieces of chalk. 15+14+13+12+11+10+9+8+7+6=105. That means there are 105 pieces of chalk in the pile. Hope this helps.

Answer both Question 11 and 12. I will make Brainelist + 50 points ​

Answers

Answer:

#11. i) 5, ii) 6, iii) - 4, iv) 6#12- see below

Step-by-step explanation:

#11

Given equation for sum of the first n terms

[tex]S_n=7n-2n^2[/tex]

Using the equation solve the following

i)

The first term [tex]t_1[/tex], is same as the sum of the first 1 term, so n = 1

[tex]t_1=S_1=7(1)-2(1)^2=7-2=5[/tex]ii)

Sum of the first 2 terms, when n = 2

[tex]S_2=7(2)-2(2)^2=14-8=6[/tex]iii)

Common difference is the difference between two consequitive terms.

First, find the second term:

[tex]t_2=S_2-t_1=6-5=1[/tex]

Now find the difference between the first two terms:

[tex]d=t_2-t_1=1-5=-4[/tex]iv)

We need to find such n that [tex]S_n[/tex] = - 30

[tex]7n - 2n^2=-30[/tex][tex]2n^2 - 7n-30=0[/tex][tex]2n^2-12n+5n-30=0[/tex][tex]2n(n-6)+5(n-6)=0[/tex][tex](n-6)(2n+5)=0[/tex][tex]n=6[/tex] is the only positive root

So the answer is 6

#12

Simplifying in steps as below

a) i)[tex]\dfrac{5}{y-3} +\dfrac{2}{3-y}=[/tex][tex]\dfrac{5}{y-3}-\dfrac{2}{y-3}=[/tex][tex]\dfrac{5-2}{y-3}=[/tex][tex]\dfrac{3}{y-3}[/tex]ii)[tex]\cfrac{1}{m+3} +\cfrac{2m}{m^2-9} =[/tex][tex]\cfrac{1}{m+3} +\cfrac{2m}{(m-3)(m+3)} =[/tex][tex]\cfrac{m-3}{(m-3)(m+3)}+\cfrac{2m}{(m-3)(m+3)} =[/tex][tex]\cfrac{m-3+2m}{(m-3)(m+3)} =[/tex][tex]\cfrac{3m-3}{(m-3)(m+3)}[/tex]


255, 250, 245, ...
Find the 40th term.

Answers

Answer:

so here we minus 5 from 255 to get to 250 and we do it again to get to 245. for reaching the 40th term we should do it 39 times.

so, 255+ (-5) (39) = 255 - 195 = 60

which is our 40th term.

The 40th term of  (255, 250, 245...) is 60.

What is arithmetic progression ?The difference between any two successive integers in an arithmetic progression (AP) sequence of numbers is always the same amount. It also goes by the name Arithmetic Sequence. For instance, the natural number sequence 1, 2, 3, 4, 5, 6,... is an example of an arithmetic progression. It has a common difference of 1 between two succeeding terms (let's say 1 and 2). (2 -1). We can see that the common difference between two subsequent words will be equal to 2 in both the case of odd and even numbers.There are three distinct progression kinds. As follows:Mathematical Progress (AP)Graphical Progress (GP)Rhythmic Progress (HP)It is feasible to find a formula for the nth term for a certain kind of sequence called a progression. The most popular mathematical progression, with simple formulas, is the arithmetic progression.

Calculations :

The formula to find the nth term = [tex]a_{n}[/tex]  =  -5n + 260

                                                      = [tex]a_{40}[/tex] x 5n = 260

                                                      = 260 - 200 = 60

Learn more about Arithmetic progression refer :

https://brainly.com/question/24191546

#SPJ2

if 60% of class is girls, and there are 30 students in the class. How many boys are in class?

Answers

Answer:

12

Step-by-step explanation:

60% of 30 is 18 (girls)

40% of 30 is 12  (boys)

Answer:

12 boys

Step-by-step explanation:

60% is the same as 6/10, and if you make the denominator 30, you must make the denominator multiply by three as well as the numerator.  this makes the number 18/30 girls in a class. if you subtract the girls from the total number of people, you get 12 boys, or 40% of the class.

you can also find that 100% - 60% = 40%, which is equal is equal to 4/10. After it's multiplied by 3 again, it becomes 12/30 or 12 boys.

The number 1 is a factor of _________.
A) all odd numbers
B) all even numbers
C) all whole numbers

Answers

Answer:

The number 1 is a factor of C)all whole numbers.

hello!

1 is a factor of all whole numbers.

Every single number, including odd numbers and even numbers, is divisible by 1 (evenly, without any remainders)

Remember, whole numbers include odd numbers, even numbers, and 0.

note:-

Hope everything is clear; if you need any more explanation and/or clarification, kindly let me know, and I will comment and/or edit my answer.

HELP!!
what is 23x+(4-5b)

Answers

Answer:

just remove the bracket and write normally so it's 23x+4-5b

Step-by-step explanation:

if you meant something else then let me know

100 Points ! ! !
Exploiting points will be reported.

Brain deposited $9,824 into a savings account for which interest is compounded daily at a rate of 3.62%. How much interest will he earn after 8 years?

SHOW WORK AND WILL GIVE BRAINLIST

Answers

$3299.62

compounded daily interest : [tex]\sf A = P(1 + \dfrac{r}{n})^{nt}[/tex]

[tex]\sf 9,824.00(1 + \dfrac{3.62\%}{365})^{(365)(8)}[/tex]

[tex]\sf \$13,123.62[/tex]

total money he will have : $13,123.62

amount earned : $13,123.62 -  $9,824 = $3299.62

Answer:

Interest = $3,299.64 (nearest cent)

Step-by-step explanation:

Compound interest formula:  [tex]\sf I=P(1+\frac{r}{n})^{nt}-P[/tex]

where:

I = total interest earned over time periodP = initial principal balancer = interest rate (in decimal form)n = number of times interest applied per time periodt = number of time periods elapsed

Given:

P = $9,824r = 3.62% = 0.0362n = 365t = 8 years

Substituting given values into the formula and solving for I:

[tex]\sf \implies I=9824(1+\frac{0.0362}{365})^{365 \times8}-9824[/tex]

[tex]\sf \implies I=13123.62461-9824[/tex]

[tex]\sf \implies I=3299.62 \ (nearest \ hundredth)[/tex]

Part A: Given sine of theta is equal to radical 3 over 2 comma determine three possible angles θ on the domain [0,∞).


Part B: Given θ = 675°, convert the value of θ to radians and find sec θ.


(Picture below is equation stated in Part A)

Answers

Answer:

  A.  {60°, 120°, 420°}

  B.  θ = 15π/4; sec(θ) = √2

Step-by-step explanation:

A.

The sine function is periodic with period 360°, and it is symmetrical about the line θ = 90°. The reference angle for the given value of sin(θ) is ...

  θ = arcsin(√3/2) = 60°

The next larger angle with the same sine is (2×90°) -60° = 120°. Any multiple of 360° added to either one of these angles will give an angle with the same sine. A possible set of 3 angles is ...

  {60°, 120°, 420°}

__

B.

One degree is π/180 radians, so the given angle in radians is ...

  θ = 675° = 675(π/180) radians = 15π/4 radians

This angle has the same trig function values as 7π4, a 4th-quadrant angle with a reference angle of π/4, or 45° The secant of that angle is

  sec(45°) = √2

The 4th-quadrant angle has the same sign, so ...

  sec(675°) = sec(15π/4) = √2

Liam is a tyre fitter. it takes him 124 minuets to fit 4 tyre's to a lorry. how long would t take him to fit 6 tyre's to a lorry?
if he works for 93 minuets how many tyre's will he fit?

Answers

168 minutes or 2 hours 48 minutes

Step-by-step explanation:

Since 12 tyres is 3 times 4 tyres, it will take 3 times as long as 56 minutes.

3 * 56 minutes = 168 minutes

We can convert the answer to hours and minutes.

60 minutes = 1 hour

120 minutes = 2 hours

168 minutes – 120 minutes = 48 minutes

168 minutes = 2 hours 48 minutes

Answer: 168 minutes or 2 hours 48 minute

3 times as long as 56 minutes.
3 * 56 minutes = 168 minutes
We can convert the answer to hours and
minutes.
60 minutes = 1 hour
120 minutes = 2 hours
168 minutes - 120 minutes = 48 minutes
168 minutes = 2 hours 48 minutes
Answer: 168 minutes or 2 hours 48 minute

>> The total cost of a pizza and 3 drinks is $19. The price of the pizza is $10 and each drink is the
same price, d.
Which model represents the situation?
10
d
d
d
19
.) What is the price of one drink?
d
?

Answers

Answer:

d = 3

Step-by-step explanation:

According the figure:

10 + d + d + d = 19d = 3

Answer Check Below:

⇒ 10 + 3 = 13

⇒ 13 + 3 = 16

⇒ 16 + 3 = 19

Therefore, d = 3.

Answer:

$3

Step-by-step explanation:

⇒ 10 + 3d = 19 is represented by the figure⇒ 3d = 9⇒ d = 3The price of one drink is $3

Please solve the first three question with explanation ​

Answers

Answer:

first one is b, second one is c

Step-by-step explanation:

3-4x<=11

-4x<=11-3

-4x<=8/:(-4)

x>=-2

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It is easy to get swept up in the bright colors, cutesy charactersand the satisfaction you feel when you finally complete a difficult level. So, you keep playing, and playing, and playing. Many people say games like these are addictive. But are they, really?Maybe. Addiction Science Award Winner Ethan Guinn definitely thought so. Dopamine: Sweet Rewards for the BrainRewards in video games, such as points or bonuses, are surprising and often unpredictable. Figuring out that special move or combination that helps you conquer each level feels great. Not knowing when you will get that reward keeps you engaged.These periodic bursts of pleasure are the work of dopamine. Dopamine is the chemical in your brain that causes you to feel happy, and it is what gets you hooked on lots of things in life.Your brain is designed to release dopamine in response to things that are good for youlike spending time with your friends, eating healthy food, or exercising. Dopamine bursts also reward you when you apply your cleverness to solving real-world problems.But people have figured out all kinds of ways to tap into the brains reward system with things that arent so good for you. Drugs and junk food are obvious, harmful examples. Video games might not kill you or make you overweight (at least not directly), but many people feel they are hooked on them. So, Is Gaming Really an Addiction?Scientists say that more research is needed before they can tell whether being hooked on a video game is actually an addiction.Addiction is more complicated than just wanting to feel good. People who are addicted to drugs often just want to feel normal or not bad. It is also more than just the compulsive need to keep using a drug or engaging in a behavior. Addiction means being unable to quit, even in the face of negative consequences.A person with a drug addiction wants to use drugs even when their grades have tanked, they have lost their job, and they no longer care about the things that were once important to them. When they are not using drugs, they feel withdrawal symptoms that make them sick. Scientists are not sure video games can cause the same effects.Butif you play a game so much that you dont participate in lifes normal activitiesyou dont sleep or eat or hang out with friends or do the things you used to loveyou are heading down a dangerous path. If that describes you, maybe you should try not playing the game for a day or two, or even a week. Ask people that you trust if they think you have a problem. And, if you find that you just cant stopeven if video gaming addiction isnt officially a diseaseyou can absolutely get help by talking to your parents or a guidance counselor at school.How does the author use structure in the Dopamine: Sweet Rewards for the Brain section to impact the meaning of the passage?A. The author uses a cause-and-effect structure to describe the biological release of dopamine and how it is related to various addictions.B. The author uses a chronological structure to describe the process of becoming addicted to video gaming.C. The author uses a problem and solution structure to describe the reasons why a person tries to achieve a dopamine release.D. The author uses a compare and contrast structure to describe the similarities and differences between video game addiction and other types of addiction.