If f(x)=2x^2-4, find f(0) and f(-3)

Answers

Answer 1

Answer:

1st problem. x= √2, -√2 or Decimal form x= 1.41421356...

2nd problem.  x= √2/2 , -√2/2 or Decimal form X= 0.70710678...


Related Questions

Use the relationship between the angles in the figure to answer the question.

Which equation can be used to find the value of x?

x + 90 = 61
​x + 90 + 61 = 180​
​x + 61+ 90 = 90​
​x + 61 = 180​

Answers

Answer:

B.

Step-by-step explanation:

x + 90 + 61 = 180.

The m of angle vertical to x = m  < x and the 3 angles are on the same line.

A line with a slope of 5 passes through the point (0,0). What is its equation in slope-intercept form?

Answers

Answer:

y=5x or y=5x+0

Step-by-step explanation:

there is a slope of 5 and it has no setoff

Layna can paint a 350-square foot room in 4 hours. It takes Bebe 7 hours to paint the same room. Which equation can be used to find the time in hours, t, it takes Layna and Bebe to paint the room together?

Answers

1/4+1/7=t
I am 99% sure this is correct. Good luck

Answer:

A. 1/4t+1/7t=1

Step-by-step explanation:

A prism has a volume of 405 cubic inches.
4.5 in.
15 in.
Which is the correct substitution for finding the height of the prism?​

Answers

Answer:

405 = 15 times 4.5 times h

Step-by-step explanation:

Complete question

A prism has a volume of 405 cubic inches.

A prism has a length of 15 inches, height of h, and width of 4.5 inches

Which is the correct substitution for finding the height of the prism?

A V = l w h. 405 = 15 + 4.5 + h.

B V = l w h = 15 times 4.5 times 405

C V = l w h = 15 times 4.5 times 15

D V = l w h. 405 = 15 times 4.5 times h

Find the diagram attached

Volume of the prism is expressed as;

V = lwh

l is the length

w is the width

h is the height

Given the following

l = 15inches

w = 4.5inches

Required

Expression to calculate the height g

Substitute the given values into the formula

V = lwh

405 = 15 * 4.5 * h

Hence the required option is 405 = 15 times 4.5 times h

Answer:

405 = 15 times 4.5 times h

Step-by-step explanation:

Give it to the other person.

what is 8/16 as a whole number

Answers

Answer:

2 is the simplified fraction for 8/16. Simplify 8/16 to the simplest form.

Step-by-step explanation:

What is 8/16 Simplified? - 1/2 is the simplified fraction for 8/16. Simplify 8/16 to the simplest form. Online simplify fractions calculator to reduce 8/16 to the lowest terms quickly and easily.

Answer:

0.5 or 1/2

Step-by-step explanation:

nothing can futher be simplified

The value of Tonya's car is $21,000. The car's value depreciates at a rate of 15% per year.

Which function represents the value of the car after t years?

O f(t) = 1.15(21,000)

O f(t) = 21,000(1.15)

O f(t)21,000(0.85)

O f(t) = 0.85(21,000)

Answers

Answer:

f(t) = 0.85(21,000)

Step-by-step explanation:

100% - 15% = 85% 0r in decimal form 0.85

0.85 x the original pricen 21,000

Answer:

the answer for this question is: f(t)=21,000(0.85)^t

Step-by-step explanation:

well since its asking what function represents the value, you have to convert the 15 percent into a decimal. so when you put the equation together you can see its 0.85.

hope it helps! :)

Genevieve is 3 years older than twice her brother's age. Genevieve is 21 years old. Write an equation to find her brother's age.​

Answers

Her brother is 9.

Because she is 3 years older than half his age, subtract 3 - 21. This gives 18. Then divide 18 / 2. This gives 9.

The equation that represents Genevieve's brother is y = 18/2.

What is the equation that represents Genevieve's brother age?

The equation that represents Genevieve's age:

21 = 3 + 2Y

Where Y represents Genevieve's brother age

In order to determine the required equation, make y the subject of the formula

21 - 3 = 2y

18 = 2y

y = 18/2

To learn more about linear functions, please check: https://brainly.com/question/26434260

BRAINIEST TO WHOEVER RIGHT “ identify the box and whisker plot that represents the data.” “Cat lengths (in inches) : 16, 18, 20, 25, 17, 22, 23, 21”

Answers

The second box/whisker plot is correct.

First we have to put he data set in ascending order:

16, 17, 18, 20, 21, 22, 23, 25

The median (middle number or average of 2 middle numbers) = 20.5 The center line of the box needs to be at 20.5

The middle of the first half of the data is 17.5, (average of 17 & 18) so the left side of the box needs to be at 17.5

The middle of the second half of the data is 22.5, (average of 22 & 23), so the right side of the box needs to be at 22.5.

The “whiskers” are your bottom & top numbers...representing the full range of data. They should be at 16 & 25.

Nalani says the expression 9+7r cannot be factored using the GCF. Is she ​correct? Explain why or why not

Answers

Answer:

Nalani is correct.

Step-by-step explanation:

Given - Nalani says the expression 9+7r cannot be factored using the GCF.

To find - Is she ​correct? Explain why or why not.

Proof -

GCF - Greater Common factor

Given that, the expression is - 9 + 7r

As

HCF(9, 7) = 1

So , we can not factor the expression.

i.e. there does not exist any number who is a multiple of 9 and 7 both.

So,

Nalani is correct.

Example -

Let the expression be 24 + 18x

HCF(24, 18) = 6

So,

24 + 18x = 6(4 + 3x)

What is the answer for, A metal bar 8.15 ounces 93% of the bar is sliver. How many ounces of silver are in the bar? ( round to the nearest thousandth)?

Answers

Answer:

7.580 ounces

Step-by-step explanation:

The question is asking how many ounces of silver are in the bar. We know that 93% of the bar is silver. The bar is 8.15 ounces. This means we need to find 93% of 8.15. Let's set up an equation.

93% of 8.15

93/100 • 8.15

0.93 • 8.15

= 7.5795

Round to the nearest thousandth.

7.580 ounces

Hope this helps!

The angle of depression from a bird sitting on the top of a telephone pole to the base of a tree is 61°. If the telephone pole is 17 feet tall, what is the distance between the pole and the tree?

Answers

Hello, I Am BrotherEye

Answer:

Perhaps This Will Help!

https://brainly.in/question/3424477

Step-by-step explanation:

Unit 6 Area and Perimeter Test
Find the perimeter of the figure below. Use 3.14 for pie If needed, round your answer to the nearest hundredth. SHOW AL
6 ft
4 ft
\5 ft
3 ft

Answers

3fthhdhdhrhruruurjjrjrjfjfj

Please help! 90 x 120 = ? divided by 2

Answers

90 x 120 = 10800

10800/2 = 5400

Answer:

21600=x

Step-by-step explanation:

so this is the problem:

90x120=x/2

first, you can multiply 90 and 120 to get 10800.

then, your equation looks like this

10800=x/2

you can multiply both sides by 2

2(10800)=(x/2)(2)

then, you get this

21600=x

hope this helped!!!

FREE! PLEASE ANSWER THE QUESTION TO WIN BRAINLIEST! (NO LINKS)
(Posting till I am out)

Question: Where should a line be drawn to make the below equation accurate?

Equation: 5 + 5 + 5 + 5 = 555

This one made me say "OHHHH-"

Answers

Answer:

In a plus sign

Step-by-step explanation:

Step-by-step explanation:

the line should be thought the (=) sign (≠)- like this

that means that it does not equal each other because I mean if you solve it, it made it    20=555 and 20 does not equal 555

What's 1.485 times 27.7372862 I know this is easy but I lost my calculator and my assignment is due in 1 minute! If anyone can answer this fast that would really help! :)

Answers

Answer:

41.18987

Step-by-step explanation:

The answer is 41.189870007

plz help me i need help I can do it but don't have time to think​

Answers

Step-by-step explanation:

3a + 2 = 8 ==> a=2

12 + 2 = c ==> c=14

3b + 2 = 2 ==> b=0

3d - e = 15

4d - e = 21

fd - e = 45

------------------

d=6

e=3

f=7

Hope to helpfull

Willy's Candy store and Bill's Candy store attended same number of customers in an hour.



Willy's Candy store can attend 3 customers at once where as Bill's Candy store can attend 5 customers at once. So, what is the minimum number of customers attended by each store in an hour?

Answers

Answer:

15 customers attended by each store

PLEASE ANSWER FAST I NEED THIS! Fire in inches of 10 senior boys are 64, 65, 66, 68, 71, 72, 73, 73, 73, and 74. find the mean of the heights.

Answers

Answer:

632.4

Step-by-step explanation:

You have to add all the numbers then dived it by ten. Hope this helps all mark me brainlest plzzzz

PLEASE HELP ME I WANT TO PASS THIS CLASS AND GRADUATE WILL GIVE BRAINLIEST

A recent study of high school students shows the percentage of females and males who have at LEAST one notation in their school record for inappropriate behavior. A simple random sample of high school students was interviewed. The students were asked whether they had a notation for inappropriate behavior in their school record. Of the 100 females, 21 answered yes, as did 145 of the 400 males.

Part A: Construct and interpret a 99% confidence interval for the difference in population proportions of females and males who have at LEAST one notation for inappropriate behavior. Be sure to state the parameter, check conditions, perform calculations, and make conclusion(s). (8 points)

Part B: Does your interval from part A give convincing evidence of a difference between the population proportions? Explain. (2 points)

Answers

lol the handwriting hurts

Answer:

other person!

Step-by-step explanation:

give the other person brainliest; hope you pass the class!

What is 9 006 in word​

Answers

Answer: 9006 in word form is nine thousand six ,

I hope you find this helpful.

Answer: 9,006 in word-form is nine thousand six.

Explanation: To write a number in word form, simply type the number in word form like I did above. If a digit doesn't have a zero, don't type zero, just type the number like I did above. Notice how I didn't include the word "zero" in my answer.

Let me know of any questions or concerns.

What is the point-slope form of line with slope -3 that contains the point
(10,-1)?

Answers

Answer:

D. y+1=-3(x-10)

Step-by-step explanation:

the equation for point-slope form of the line is given as y-y1=m(x-x1) where (x1,y1) is a given point, and m is the slope

we are given the point (10,-1) that passes through the line and a slope of -3

so we can substitute what we know into our equation

y--1=-3(x-10)

simplify

y+1=-3(x-10)

therefore the answer is D

Hope this helps! Good luck on your assignment!

Help please! All guesses get reported! Answer gets brainliest!

Answers

Answer:

A - 36 in.

b - 8

Step-by-step explanation:

A - You marked all of it right! 10 + 10 + 10 + 6

B - The teeth are only on half of the circle that hit the chain. 10 inches of chain for the big wheel, so 1/2 of 10 is 5. Same thing for the little wheel, 1/2 of 6 is 3, and 5+3 = 8, so about 8!

A: 36 in
b: 8
uhm yea so they can get brainliest

23% more than the number last week. This week, there were 7134 new cases. How many new cases were there last week?

Answers

Answer:

Number of cases sold last week= 31,017 cases

Step-by-step explanation:

Giving the following information:

Increase in sales= 23%

This week, there were 7,134 new cases.

If 7,134 cases represent the 23%, then we need to use the rule of three:

Number of cases sold last week= (7,134*100)/23

Number of cases sold last week= 31,017 cases

Select all the true statements.

x=y

Answers

Answer:

What is the question?????

Which do you pick and why? How much money do you end up with in each case?

Answers

Answer:

2

Step-by-step explanation:

Because if you get 1 per day there is 24 hours meaning there is going to be 17,280 in 30 days so you end up making more in 30 days by getting 1,000,000

Shaun is 4 years older than her sister Charmaine. If the sum of their ages is 16, how old is Charmaine?

Answers

Step-by-step explanation:

[tex]let \: the \: age \: of \: charmaine \: be \: x[/tex]

[tex]according \: to \: question[/tex]

[tex]4 + x = 16[/tex]

[tex]x = 16 - 4[/tex]

[tex]12[/tex]

[tex]so \: the \: age \: of \: shaun \: is \: [/tex]

[tex]x + 4[/tex]

[tex]12 + 4[/tex]

[tex]16[/tex]

hope it helps if it helps don't forget to like and mark me

Watching your neighbors toddlers for $15/1.5 hours or babysitting your cousins for the day for $60/8 hours. Which one pays more?

Answers

Answer:

.

Step-by-step explanation:

Answer:

Babysitting your cousins

Step-by-step explanation:

Becauss 15/1.5 is 3. And 60/8 is 7.5

help me pls!! giving brainliest and 5 stars

Answers

Answer:

A reflection over the line y = x followed by a translation up 3 units

Step-by-step explanation:

Since this is a multiple choice question, let's test each answer out.

First scenario:

"A reflection over the y-axis followed by a translation right 3 units and down 4 units"

Reflect segment XY over the y-axis, we get segment XY between x = 2 and x = 6, on y = 5 line.Translate right 3 units, we get segment XY on y = 5 line, between x = 5 and x = 9.Translate down 4 units, we get segment XY on y = 1 line, between x = 5 and x = 9.

Resulting segment does not match segment X'Y', this answer is incorrect

Second scenario:

"A reflection over the line y = x followed by a translation up 3 units"

Reflect segment XY over y = x line, we get segment XY, between y = -2 and y = -6, on x = 5 line.Translate up 3 units, we get segment XY on x = 5 line, between y = 1 and y = -3.

Resulting segment matches segment X'Y', this is the correct answer.

solve for x: 2+x+x+x+4=9

Answers

Answer:

x=1

Step-by-step explanation:

2+1+1+1+4=9

2+x+x+x+4=9

=> 3x + 6 = 9

=> 3x = 9-6

=> 3x = 3

=> x = 3/3

=> x = 1

Solve using the standard algorithm. 82.14 ÷ 0.6 ≅

Answers

Answer:60

Step-by-step explanation:

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