Mathematics Middle School

pls help me!! even just one answer is helpful!

1. Let [tex]f(x) = 4x - 7, g(x) = (x+1)^{2},[/tex] and, [tex]s(x) = f(x) + g(x).[/tex] What is s(3)?

2. Let [tex]f(x) = 2x^2 + 3x - 9, g(x) = 5x + 11,[/tex] and [tex]h(x) = -3x^2 + 1.[/tex] Find f(x) - g(x) + h(x).

3. The function f(x) satisfies [tex]f(\sqrt{x+1}) = \frac{1}{x}[/tex] for all x ≥ -1, x ≠ 0. Find f(2).

Answers

Answer 1

Answer:

1) s(x) = f(x) + g(x) = 4x - 7 + x² + 2x + 1 = x² + 6x - 6

=> s(3) = 3² + 6.3 - 6 = 9 + 18 - 6 = 21

2) f(x) - g(x) + h(x)

= 2x² + 3x - 9 - (5x + 11) + ( - 3x² + 1)

= - x² - 2x - 19

3) we have:

sqrt(x + 1) = 2

=> x + 1 = 4

<=> x = 3

with x = 3 => f(2) = 1/3

Related Questions

A football team is on the 40-yard line after four plays. On the first play they gained 15 yards. On the second play they lost 6 yards. They gained 3 yards on the third play and twice as many on the fourth play. On which yard line did the team begin?

Answers

Answer: 22 yard line

22 + 15 = 37

37 - 6 = 31

31 + 3 = 34

Twice as many is X2 usally so

3x2=6

34 + 6 = 40

Answer:

22-yard line

Step-by-step explanation:

1st play - 2nd play = 15-6 = 9 yards

3rd play - 4th play = 9 + 3 + 6 = 18 yards

18 yard movement

40-18 = 22- yard line

EXPERT HELP I'LL GIVE BRAINLIEST:

Answers

Answer:

846 just follow the net. You had the right answer.

Step-by-step explanation:

Examine the linear graph. Determine the y-intercept and write the y-intercept in coordinate form. Then write the equation of the line in slope-intercept form.

Answers

Answer:

y-intercept: 100 (0, 100)

[tex]y=\frac{8}{7}x+100[/tex]

Step-by-step explanation:

The y-intercept is the point on a graph that crosses the y-axis, this line crosses the y-axis at 100.

slope-intercept form is: [tex]y=mx+b[/tex]

[tex]m=slope[/tex]

[tex]b=y-intercept[/tex]

This line has a slope of 8/7 and the y-intercept is 100 so the equation would be: [tex]y=\frac{8}{7}x+100[/tex]

y=8/3x+100 is the equation of the line in slope-intercept form.

What is Slope of Line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

From the given graph let us consider two points through which the line is passing.

(0, 100) and (42, 148)

Slope=148-100/42

=48/42=8/3

Now let us find the y intercept

100=8/3(0)+b

b=100

So slope intercept form is y=8/3x+100

Hence, y=8/3x+100 is the equation of the line in slope-intercept form.

To learn more on slope intercept form click:

https://brainly.com/question/9682526

#SPJ2

A tortoise travels 0.945 miles in 3.5 hours.
It travels 245 miles per hour
At this rate, how long will it take the tortoise to travel 4.86 miles?

Answers

46482 is the correct answer

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Answers

Answer:

But Why

Step-by-step explanation:

I need help :) please and thank u if u get it right i will give u brainlist :)))))

Answers

Answer; 20 weeks

Explanation;
Given,5 cases containing 6 cartons
=boxes in each carton= 12 x 6= 72
= 72 boxes of sauce in each case
= sauces in all 5 cases= 72 x 5= 360
Therefore narrator uses 18 boxes of sauce each week
To find how many weeks it will last we divide 360 with 18 as 18 sauce boxes are used every week and total sauces are 360=

18/360= 20
Narrator uses the sauce boxes for 20 weeks.

Hope it helps you.

I did some of it but I don't really know if its correct. I need help with the rest

Answers

The picture isn’t clear

Hemophilia means that the person has faulty genes for what?

A blood clotting

B making their own insulin

C not having enough red blood cells

D silk flexibility

Answers

Answer:

A. blood clotting

Step-by-step explanation:

I hope that helps you! :)

Answer:

srry

Step-by-step explanation:

i need halp will give brainliest i need help as fast as possible

Answers

Answer:

yes. hope this helps

Step-by-step explanation:

plz help me i dont want the answer i just wanna know how to do it if i fail this test i fail my grade plz hep

Answers

i’m pretty sure his speed is 1 mile per hour. hope this helps you!

Answer:

The answer is 7

Step-by-step explanation:

We know that the velocity can be calculated from the equation of the distance traveled divided by time

Then

[tex]s = \frac{d}{t } \\ s = \frac{ \frac{1}{8} }{ \frac{1}{56} } = \frac{56}{8} = 7[/tex]

I am a math teacher. If you need any explanation you can communicate with me from whats in this number 01557831028.

Mitchell cycled a total of 4 kilometers by making 2 trips to work. After 4 trips to work, how many kilometers will Mitchell have cycled in total? Assume the relationship is directly proportional.

Answers

8 kilometers
2 kilometers per trip
4x2=8

Answer:

8 kilometers.

Each trip he bikes 2 kilometers, if he makes 4 trips that's 4 x 2 which is 8

Please help!!!

Here is a list of expressions.

Find any pairs of expressions that are equivalent.

Answers

Answer:it the first two

Step-by-step explanation:

Answer:

1 and 3

2 and 6

8 and 9

3 and 5

Althea has 100 trading cards and Marlon has 20. Every day Althea gives Marlon one card. Use the equations "c=100-d" and "c=20+d" to model this situation. Solve the system by substitution. Explain what the solution means in this situation.

Answers

Answer: 5

Step-by-step explanation: 100/20=5

SMART PPL PLEASE HELP!!!

Answers

Answer:

(n+m)6

6(m+n

Step-by-step explanation:

Parentheses you start with. Then multiply by 6. When there is nothing in between them, that means multiply. And this goes with the communitive property so either way its put or reversed it still equal the same thing.

Have a great day!

Answer:

I believe it's the 4th one

Step-by-step explanation:

Area is multiplying

HELPPPPPPPPPP MEEEEEEEEE IM TO YOUNG TO DIE

Answers

Answer:

Im either gonna say, the last one or the first. Please dont hate me.

A or C I think don’t get mad if I’m wrong

A pizza company uses equation C = 15n to calculate the cost of buying a number of pizzas. What is the constant of proportionality in the equation? What information does the constant of proportionality provide you?

Answers

Answer:

29

Step-by-step explanation:

29 djdjdjdjddjdjdndjdrjdjdjdiddhd

Please answer this i need help (dont write nothing ramdom please) please help me

Answers

I don’t see any question or attachment :( I hope your having a great day
You need to add something

Timothy has a drawing of the family room of a house that he is building.

Answers

Answer:

13.5 m

Step-by-step explanation:

D

Answer:

Step-by-step explanation:

D

PLZZ HELP ANSWER THIS


WHAT IS 2+2+4+5+932

Answers

Answer:

945

Step-by-step explanation:

Answer:

945

Step-by-step explanation:

please help I have to turn this in by the end of the night

Answers

Answer:

The first option

Step-by-step explanation:

30÷(120÷3)=0.75

14 1/5 - 5 5/6 as a fraction

Answers

Answer:

[tex]\frac{251}{30}[/tex] or 8[tex]\frac{11}{30}[/tex]

Step-by-step explanation:

Answer:

8 11/30

Step-by-step explanation:

But all you have to do is just simplify you can use calculator soup to siplify I hope this helps.

someone help i only have 6 minutes left

Answers

7, 13, 16, 10. This is from top to bottom

hhhhhhhhhhhhhhheeeeeeeeeeeeeeeeellllllllllllllllppppppppppppppp

Answers

Answer:

It would be 1/2

Step-by-step explanation:

1/2 because the number in the equation comes before c making in the constant of proportionality (cop)

The manager of a bookstore ordered 480 copies of a book. The manager paid a total of $7,440 for the books. The books arrived at the store in 5 cartons. Each carton contained the same number of books. A worker unpacked books at a rate of 48 books every 2 minutes. The manager unpacked books at a rate of 54 books every 3 minutes.

How many minutes did the worker need to unpack 200 books?

Enter your answer, as a decimal rounded to the nearest hundredth, in the space provided.

Please Help Meh

Answers

So 48 • 4 would equal 192 so 4 • 2 mins equals 8 mins and then you have 8 more books to unpack so 48 divide by 8 equals 6. So the answer would bc (8 mins and 6 second)

Follow directions please. Do your best. You don't need to explain. I am not doing BRAINLIEST anymore. It causes too many problems. I don't like arguing so that is why. If you have any questions or just want to talk and be friends type in my question box please.

Answers

Answer: 760267200

Step-by-step explanation:

marking brainlist for whoever gets it right first

Answers

x= 4
3 by 32

or

2x + 4 by 6x +12

how can you determin if a number is a multiple of 5?

Answers

Answer:

Just Divide the number by 5 lol

Answer:In another example, multiples of the number 5 can be found by performing the following calculations: 5 * 1 = 5, 5 * 2 = 10, 5 * 3 = 15, 5 * 4 = 20, and 5 * 5 = 25. Determine if the number can be divided without any remainder.

Step-by-step explanation:

Jenny has some tiles in a bag. The tiles are of three different colors: purple, pink, and orange. Jenny randomly pulls a tile out of the bag, records the color, and replaces the tile in the bag. She does this 50 times. The results are recorded in the given table.



Color of Tile Purple Pink Orange
Number of times the tile is drawn 4 24 22
What is the experimental probability that Jenny will pull out a purple tile? (1 point)

Group of answer choices

4 over 50

4 over 46

24 over 50

24 over 46

Answers

Answer:

4 over 50

Step-by-step explanation:

4+24+20=50

and= 4/50

When solving the equation 7 + x = -3 . how would you solve for x?

Answers

7+x=-3

-7.     -7

x= -10

if my answer helps please mark as brainliest.

PLS HELPPPP The question is down below.

Answers

Answer:

I think it's C

Step-by-step explanation:

Answer:  c. The price of 6 tickets is 30$, which is $5.00 per ticket

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