im confused can somebody help me please

Im Confused Can Somebody Help Me Please

Answers

Answer 1

well, we know the piece-wise function is [tex]f(x)= \begin{cases} 7x+10&x < 0\\\\ 7x+20&x\geqslant 0 \end{cases}[/tex]

hmmm so what's f(-1), namely what is f(x) when x = -1?

well, when x = -1, hmm -1 is less than 0, so the subfunction that applies to that will be when "x" is less than 0, namely the part of 7x + 10, so we can say

f(-1) = 7(-1) + 10

f(-1) = 3

so hmm what's f(0) or namely, what's f(x) when x = 0?

well, what subfunction applies when x = 0? well, it has to be the subfunction with "x greater or equals to 0", x ⩾ 0, so then is 7x + 20

f(0) = 7(0) + 20

f(0) = 20.


Related Questions

Solve the following expression when
p = 15

P + 4
_
3

Answers

Answer:

49/3 or 16.33...

Step-by-step explanation:

15 + 4/3.

15/1 + 4/3

45/3 + 4/3.

ANSWER: 49/3

what digit is in the ten thousand place in 796,142 what is the answer​

Answers

Answer:

9

Step-by-step explanation:

700,000

90,000

6,000

100

40

2

Answer:

9

Step-by-step explanation:

796,142

100000  10000    1000  100  10   1

Felix buys five vests for $22 each, three pairs of shoes for $50 each, and six hats for $17 each. What is the mean amount that he spent?

A. $34.62
B. $32.81
C. $25.86
D. $22

Answer: C

Answers

Answer:

$ 25.86 is the answer

Step-by-step explanation:

Please help me

10 points

Answers

answer:

127.2345in²

explanation:

attached

--

if this helped, please consider giving brainliest !

Use compatible numbers to estimate the quotient of 3,780 divided by 90. What will compatible numbers did you use? Will your estimate be an underestimate or overestimate? Explain why.

Answers

Answer:

3780/90

what number close to 37 is divisible by 9 ? 36 !!

3600/90=40 or 3690/90=41

3780/90=42

this an underestimate because the compatible numbers 3600 and 3690 are less than 3780

yall be safe

Our estimate is 38. This estimate is an overestimate because we rounded up both numbers, so we expect the actual quotient to be slightly smaller than our estimate.

What is compatible number?

Compatible numbers are numbers that are simple to mentally work with and can be used to estimate or simplify a more complex calculation.

When performing addition, subtraction, multiplication, or division, for example, it is often helpful to choose numbers that are easy to manipulate in your head or by hand, such as multiples of 10, 100, or 1000.

To estimate the quotient of 3,780 divided by 90 using compatible numbers, we can round 3,780 to 3,800 (which is divisible by 100) and round 90 to 100. Then, we have:

3,800 ÷ 100 = 38

Thus, the estimate is 38. This estimate is an overestimation because we rounded both numbers, so we anticipate that the actual quotient will be slightly lower than our estimate.

For more details regarding Compatible numbers, visit:

https://brainly.com/question/926291

#SPJ2

9. You roll a standard number cube (with 6 sides) 8 times. The results are 5, 1, 2, 4, 6, 3, 5, 5

a. What is the experimental probability of rolling a 5 on a standard number cube?

b. For 40 rolls of the number cube, predict the number of rolls that will result in a 5 based on your experiment.​

Answers

Answer:

a) we have 5 there 3 times so answer is 3/8

b)

for 8 times rolling 3 times 5 we have

for 40 times rolling will 15 times 5

Step-by-step explanation:

a) we have 5 there 3 times so answer is 3/8

b)

for 8 times rolling 3 times 5 we have

for 40 times rolling will 15 times 5

HELP PLEASE!!!
Worth 1 point
Giving 30!!
PLS HELP
I'LL GIVE BRAINLEIST IF CORRECT!!

Answers

Answer:

^EKF and^HKI

Step-by-step explanation:

Because they are vertically opposite angles

There was 1/2. Of a cake left over from Hannah’s birthday party when she and her sister came home from school the next day they ate 2/3 of the left over cake for a snak. How much of the whole cake did the girls eat

Answers

Answer:

1/3

Step-by-step explanation:

This problem would be 1/2 x 2/3. The answer would be 1x2 over 2x3.

On Tuesday, recess began at 11:43. The students got back to their class at 12:04. How long were they at
recess?

Answers

Answer:

They were out side for 21 minutes

Step-by-step explanation:

you just add 11:43 and add 21 minutes  to it and you get 12:04

0.6 × 0.8 = ___ I need help with this question KNOW!!!!!!

Answers

ANSWER = 0.48

HOPE IT HELPS :)

Answer: 0.48

Step-by-step explanation:

6 x 8 = 48

we add those decimals back in which would be 0.48

Which is greater -8.5 or -15

Answers

-8.5 is greater than -15

Answer:

-8.5

Step-by-step explanation:

this is because the more negative a number is, the less value it is, hence -8.5 is greater than -15.


Approximately how many
years would it take for an
investment of $1,000 to grow
to $1,500 with a simple
interest rate of 8%?

Answers

Answer:

6.25 years

(6 years 3 months)

Step-by-step explanation:

Simple interest formula

A = P(1 + rt)

where:

A = final amountP = principalr = interest rate (in decimal form)t = time (in years)

Given:

A = $1,500P = $1,000r = 8% = 0.08

Substitute given values into the formula and solve for t:

⇒ 1500 = 1000(1 + 0.08t)

⇒ 1500 = 1000 + 80t

⇒ 500 = 80t

⇒ t = 6.25 years

Solve the proportion.
3x/10=3/2

Answers

hello!

In order to solve a proportion, you should cross-multiply:-

[tex]\bf{\displaystyle\frac{3x}{10} =\frac{3}{2}}[/tex]

Multiply 3x times 2 and 10 times 3:-

[tex]\bf{6x=30}[/tex]

Divide both sides by 6:-

[tex]\boxed{\bf{x=5}}[/tex]

note:-

Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I'll comment and/or edit my answer :)

a tree diagram represents an experiment consisting of two trails.

P(A and D) = [?]

Answers

Answer:

0.3

Step-by-step explanation:

Start at the beginning, follow the branch to A and then the branch to D (see attached annotated diagram).

When calculating the probability of an event AND another event, multiply the probabilities.

P(A and D) = 0.5 x 0.6 = 0.3

Which function is the inverse of f(x) = -5x -4?

Answers

Answer:

f−1(x)=x5+45

Step-by-step explanation:

If prices increase at a monthly rate of 0.1%, by what percentage do they increase in a year?

Answers

Answer:

Step-by-step explanation:

Since the prices increase at a monthly rate of 0.1% per month. To find the percentage do they increase a year, we need to convert 0.1% to a decimal.

So here how we do it. We put 0.1 percent on the numerator because it a small number which is what we want over 100 like this:

[tex]\frac{0.1}{100}[/tex]

Now when plugging this into your calculator you get:

0.001

.So what do we do with this number?

We now times it by 12 like this:

0.001 x 12 which gives us:

0.012

So we can convert this back to a percentage by moving the decimal by 2 places to the right which gives us 1.2%.

Another way we could of done this without doing the long way to figure it out is by multiplying 0.1 times 12 which still gives us 1.2%

Which point is located at (–0.50, –1.25)?

Point

Answers

Answer:

Hopefully, this helps you!!

:3

Here's a graph!

Have a great day!!

[tex]Sokkachan[/tex]

Answer:

Point W

Step-by-step explanation:

Use the formula to evaluate the series . Round your answer to the nearest hundredth.

Answers

We are given with a sequence, which is a GP (Geometric Progression), as the ratio [tex]{\bf{a_{n+1}:a_{n}}}[/tex] is 1/3 for every [tex]{\bf{n\in \mathbb{N}}}[/tex], so 1/3 is the comman ratio r, and we needa find sum till 6 terms, so n = 6, and first term is 6, so putting all the values we will be having ;

[tex]{:\implies \quad \sf S_{6}=\dfrac{6\bigg\{1-{\bigg(\dfrac13\bigg)}^{6}\bigg\}}{1-\dfrac13}}[/tex]

[tex]{:\implies \quad \sf S_{6}=\dfrac{6\bigg(1-\dfrac{1}{3^{6}}\bigg)}{\dfrac{3-1}{3}}}[/tex]

[tex]{:\implies \quad \sf S_{6}=6\bigg(\dfrac{3^{6}-1}{3^{6}}\bigg)\div \dfrac23}[/tex]

[tex]{:\implies \quad \sf S_{6}=6\bigg(\dfrac{3^{6}-1}{3^{6}}\bigg)\times \dfrac32}[/tex]

[tex]{:\implies \quad \sf S_{6}=\dfrac{3^{6}-1}{3^{4}}}[/tex]

[tex]{:\implies \quad \sf S_{6}=\dfrac{3^6}{3^4}-\dfrac{1}{3^4}}[/tex]

[tex]{:\implies \quad \sf S_{6}=3^{2}-\dfrac{1}{81}}[/tex]

[tex]{:\implies \quad \sf S_{6}\approx 9-0.012\approx 8.988\approx \boxed{\bf{8.99}}}[/tex]

[tex]Find } \sum r^{2} \cdot{ }^{20} C_{r}\end{equation}[/tex]
Options:
(a) [tex]$2^{20}$[/tex]
(b) [tex]$2^{21}$[/tex]
(c) [tex]$210 \times 2^{19}$[/tex]

Answers

I bet the sum you're referring to is supposed to be

[tex]\displaystyle \sum_{r=0}^{20} r^2 \times {}^{20}C_r[/tex]

or equivalently,

[tex]\displaystyle \sum_{r=0}^{20} r^2 \binom{20}r[/tex]

where [tex]\binom nk = \frac{n!}{k!(n-k)!}[/tex] is the binomial coefficient.

Recall the binomial series,

[tex](1+x)^\alpha = \displaystyle \sum_{r=0}^\infty \binom\alpha r x^r[/tex]

which is valid for |x| < 1. (Note that if r > α, the binomial coefficient is defined to be zero, so there really are only α many terms when α is a whole number.)

Differentiating both sides with respect to x gives

[tex]\alpha (1+x)^{\alpha-1} = \displaystyle \sum_{r=0}^\infty r \binom\alpha r x^{r-1}[/tex]

Multiply both sides by some arbitrary x in |x| < 1 :

[tex]\alpha x (1+x)^{\alpha-1} = \displaystyle \sum_{r=0}^\infty r \binom\alpha r x^r[/tex]

Repeat:

[tex]\alpha (1+x)^{\alpha-1} + \alpha(\alpha-1) x(1+x)^{\alpha-2} = \displaystyle \sum_{r=0}^\infty r^2 \binom\alpha r x^{r-1}[/tex]

[tex]\alpha x (1+x)^{\alpha-1} + \alpha(\alpha-1) x^2 (1+x)^{\alpha-2} = \displaystyle \sum_{r=0}^\infty r^2 \binom\alpha r x^r[/tex]

Let α = 20, and let x approach 1 from below. The right side converges to the sum we want, while the left side converges to

[tex]20 \times 2^{19} + 20\times19\times 2^{18} = (20 + 10\times19)\times2^{19} = \boxed{210\times2^{19}}[/tex]

Find the quotient and the remainder of
64−133+32+3−12
-------------------------------
−2

Answers

Answer:

Below

Step-by-step explanation:

64-133+32+3-12= -46

-46/2= -23

There is no remainder

Assuming that Dave’s marginal tax bracket is 25%, but how much did his federal taxes declined this year if he contribute 7000 to his retirement account?

Answers

The marginal tax bracket of Dave shows that the amount of the federal tax is $28000.

How to compute the tax?

Let the federal tax be represented by x.

From the information, Dave’s marginal tax bracket is 25%, and he contributed 7000.

Based on the information, the amount will be:

25% of x = 7000

0.25 × x = 7000

0.25x = 7000

x = 7000/0.25

x = $28000

In conclusion, the amount is $28000.

Learn more about tax on:

https://brainly.com/question/25783927

please help me
and please show good answers ​

Answers

Answer:

1st one is 0.021

2nd one is 0.009

the last question is 0.015 tho

Answer:

for the first one it will be 0.021

the second one it's 0.009

and for the third one it will be 0.015

(I.5)
Write the sentence as an equation.

148 is equal to 12 minus z


Type a slash ( / ) if you want to use a division sign.

Answers

Answer:

the verbal sentence so it is easier to translate. ... 12 equals p divided by. 4 n. 2. +. 12. = p. ÷. 4. 4. Half of j minus 5 is the sum of k and 13.

Step-by-step explanation:

Please help me thank u!

Answers

Answer:

The odds of drawing a heart are 13:52

Explanation: A standard deck of card contains 52 card. There are 4 types of playing cards: clubs, diamonds, hearts and spades. Every type of them has 13 cards. How do u know that? Well just divide 52 by 4 and then you get 13.

Need Help Confused give explanation please and thanks

Answers

I hope you find it useful:)

Estimate how many times larger 5x10^8 is than 24x10^6?
A) 10 times larger
B) 20 times larger
C) 50 times larger
D) 100 times larger

Answers

Answer:

20times bc u times 5 by 10 then divide 8 u get 6.2

If Jo's misc. expenses rise by 1/3 and she starts paying for a phone that is $49 per month, how much less will she have towards next years holiday it all other expenses and her wage and bonus stay the same?​

Answers

The amount that Jo will have less towards next years holiday, if all other expenses, wage and bonus stay the same is $146.88.

Original payment for the phone

The initial amout that Jo paid for the phone is calculated as follows;

amount per month = ($49) / (1 + ¹/₃)

amount per month = ($49) / (1.333)

amount per month = $36.76

For 1 year (12 months), = $36.76 x 12 = $441.12

Amount paid now

$49 x 12 = $588

Amount she will have less towards next year

= $588 -  $441.12

= $146.88

Thus, the amount that Jo will have less towards next years holiday, if all other expenses, wage and bonus stay the same is $146.88.

Learn more about amount here: https://brainly.com/question/25109150


The average weight of an adult black bear is 4.35 x102 pounds.
This is 15 times as much as Shaneen's dog weighs.
What is the weight of Shaneen's dog?

Answers

Answer: B (2.9 x 10)

Step-by-step explanation: (4.35 x 10^2)/15 = 29 = 2.9 x 10

Sample question.....asajs

Answers

Answer:

Bob

Step-by-step explanation:

Answer:

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

a cart is pushed 40 meters against 45 newtons of friction = how much work done

Answers

Answer:

-1.8 kJ

Step-by-step explanation:

Given

Displacement = 40 metersForce against = 45 N

Solving

W = F x SW = - 45 x 40W = -1800 J = -1.8 kJ

Answer:

2250 J

Step-by-step explanation:

Work done is given by the formula :

work done = force × distance

Substituting values given gives us:

Work done = 45 × 40

Work done = 2250 J

Other Questions
3 times what number equals 1 Increasing the number of periods will increase all of the following except Multiple Choice the present value of an annuity. the present value of $1. the future value of $1. the future value of an annuity. sunita said,This dress cost is expensive. How does Rosalind Hursthouse respond to the suggestion that an abortion is just another medical procedure like appendectomy? Describe how the letter writer was affected by at least one of the modern weapons of war you learned about in this lesson (trench warfare, chemical weapons, tanks, airplanes, and submarines). Your answer should include: at least four sentences the heading of the letter you read one example from the letter of a modern weapon of war and how it impacted the letter writer Can someone help me out here? Reported Speech South pole, and amundsen did not want him to know that he had competition. amundsen did not even tell the men on his own ship where they were going until the night before they left. the south pole is a much more extreme environment than the north pole. the average year-round temperature there is minus fifty-six degrees, but at the north pole, the average temperature is zero degrees. there are no native human groups at the south pole, and very few animals live there. amundsens ship, the fram, left norway on august 9, 1910. it was eight weeks after the departure of scotts team. amundsens expedition was already behind, but the team was well organized. the supplies included lamps, tools, and medicines for the treatment of injuries and illnesses. the fram also carried a hut and various supplies, and there was enough food to last the crew for two years. four months later, the fram reached the ross ice shelf in antarctica. the men built their base camp at the bay of whales. the team would need supplies and shelter along the route to the south pole. they set up depots, or storage places for supplies, along the way. amundsen put them on a strict schedule, regulating their work hours. the labor was difficult and demanding, and they were in a race against time. the long, dark nights of winter would begin in april, and then the sun would not rise at all. amundsen also worried about scotts team reaching the south pole before him. on september 8, the team of eight men started off over the dangerous ice. frigid weather set in, so the team made a run for the nearest depot. the weather was so cold that the team could not proceed and had to return to the base camp. as soon as the weather improved, a smaller group started out again. amundsen and four other men struggled through blizzards and over glaciers. they were determined to beat scotts expedition, despite the delay that the terrible weather had caused. finally, on december 14, 1911, amundsens team reached the south pole. many of the men had frostbite on their hands and faces, but all were alive. the team members planted the norwegian flag in the frozen ground to claim their victory over scott. without amundsens organization and leadership skills, the team probably would have suffered loss of life and possibly failed entirely. this question has two parts. first, answer part a. then, answer part bpart aread the sentence from the text. the weather was so cold that the team could not proceed and had to return to the base camp. the word proceed has the latin root ceed, which means go. what does proceed mean?a. see aheadb. move forwardc. listen for soundsd. remember directionspart bwhich word from the sentence helps to show what proceed means?a. weatherb. teamc. returnd. base Factor c^2 64. Is this a special product?PLS HELP Need help on this question How many angles are formed by intersecting roads? Number the angles How can speed be described?Select one:The mass multiplied by the acceleration of an object.The force on an object divided by the mass of an object.The distance an object travels at a certain velocity.The distance travelled by an object in a certain time. in what ways did the german invasion of russia alter the course of the war Why is it important to understand the feelings and perspectives of others? Question 3 options: It will make you look like the better person. The other person will be more likely to give in. It will give you time to decide what you want to say. It will help you be willing to compromise. Good evening! Can someone please answer this, ill give you brainliest and your earning 50 points. Would be very appreciated. How are the conflicts different?The first passage has internal conflict; in the second, internal leads to external conflict. The first passage reflects external conflict; the second reflects internal conflict after 9/11. The first passage has external conflict; the second has both internal and external conflict The answer is B Solve the system of equations. If a system has one unique solution, write the solution set. Otherwise, determine the number of solutions to the system, anddetermine whether the system is inconsistent, or the equations are dependent.- 2x + 6y + 3: = -31- 3y + 7: = 592- = 10Da6The system has one solution.The solution set is {C10}The system has no solution.The system is inconsistent.The equations are dependent.The system has infinitely many solutionsThe system is inconsistentThe equations are dependentContinueSubmit Assignmer2022 McGraw HS LLC. All Rights Reserved. Terms of UsePrivacy Center Access What are the zeros of the polynomial p(x) = x3 19x - 30?-1.-10, 1, 32.-6, -5, 13.-3, -2,54.-15, 1, 2 Type 2 diabetes is best defined asA. a chronic condition in which your body doesn't use insulin properly to metabolize sugarB. a condition in which you have too much LDL (low density lipoprotein) in your blood C. conditions that include high blood sugar and high blood pressure and often occur togetherD. diseases often caused by being inactive, avoiding exercise, and eating an unhealthy diet I will give Brainliest! I need this now, please help! >, Max went to a shopping mall with $35 in his wallet. He spent two fifths of the money he had in his wallet at the bookstore. How much money, in dollars, did he have left? $21 $26 $10 $13