WILLLLLLLLLLLL MARK BRAINLISTTTTTTT

WILLLLLLLLLLLL MARK BRAINLISTTTTTTT

Answers

Answer 1

Answer:

f (8) = ( -161 )

Step-by-step explanation:

[tex]f(x)=-3x^{2} +3x+7[/tex]

To find f(8) sub 8 for x in the equation and simplify:

[tex]f(8)=-3(8^{2} )+3(8)+7[/tex]

= -192 + 24 + 7

= -168 + 7

= -161

so f(8) = -161


Related Questions

A car travels for 4 hours at an average speed of 45 mph and then 6 hours at an average speed of 35 mph.
(a) Work out the total distance travelled.
(b) Work out the average speed for the entire journey.

Answers

Answer: (a) 390 miles im not sure for b

Step-by-step explanation:

At the football game, 3 hamburgers and 6 soft drinks cost $27, and 3 hamburgers and 3 soft drinks cost $18. Which two equations can be used to determine the price of a hamburger and the price of a soft drink?

Let x represent the cost of a hamburger and y represent the cost of a soft drink.

Answers

Answer:

Let be "x" the cost in dollars of a hamburger and "y" the cost in dollars of a soft drink.

The cost of 4 hamburguers can be represented with this expression:

4x4x

And the cost of 6 soft drinks  can be represented with this expression:

6y6y

Since the total cost for 4 hamburgers and 6 soft drinks is $34, you can write the following equation:

4x+6y=344x+6y=34   [Equation 1]

 The following expression represents the the cost of 3 soft drinks:

3y3y

According to the information given in the exercise, the total cost for 4 hamburgers and 3 soft drinks is $25. Then, the equation that represents this is:

4x+3y=254x+3y=25 [Equation 2]

Therefore, the Equation 1 and the Equation 2 can be used to determine the price of a hamburger and the price of a soft drink

Answer:

3x + 6y = 27

3x + 3y = 18

x = $3, y = $3

Step-by-step explanation:

I will solve by using the elimination method.

3x + 6y = 27

3x + 3y = 18

Subtract top equation by bottom.

3x + 6y = 27

- (3x + 3y = 18)

_____________

  0 +  3y  =  9

3y = 9

y = 3

Plug y in for three

3x + 6*3 = 27

3x + 18 = 27

3x = 9

x = 3

So, your solution is x = $3, y = $3

Gary is building a new L-shaped desk for his room. He wants to make sure it
is large enough to hold all his supplies. The dimensions of the desk, in feet,
are shown in the diagram. What is the area of the desk?
9 ft
2 ft
6 ft
6 ft
4 ft
3 ft
A. 24 square feet
B. 36 square feet
C. 30 square feet
D. 54 square feet

Answers

Answer:

30ft2.  so its c

Step-by-step explanation:

its 30

quiz verified

(Find the commission.)

Earning Commission
Sales CommisionRate Commission $640 4% ?

The commission is $ ?​

Answers

Answer:

25.6

Step-by-step explanation:

640*4%

Answer:

the commsion is $25.60

Step-by-step explanation:

commission amount = sale price * commission percentage / 100.

Evaluate (98 x 102) by using suitable identities.

Answers

Answer:

The answer is 9996

Step-by-step explanation:

Using the identity (x+a)(x+b) = x  ^2  +(a+b)x+ab

Writing 102 as 100+2 and 98 as 100−2

Hence (100+2)(100−2) = 100  ^2  +[2+(−2)]100+(2)(−2)

= 10000+(0)100−4

= 9996

The answer is 9996

Answer:

9996

Step-by-step explanation:

by using suitable identities ;

(98) × (102)(100 - 2) × (100 + 2)10000 - 49996

identity used here is :

[tex](a + b) \times (a - b) = (a {}^{2} - b {}^{2} )[/tex]

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

A small plane has 20 rows of seats. Each row has 4 seats.
help me plz!

Answers

Answer:

there are 5 sections

Step-by-step explanation:

and how you want us to help?:))

The heights of Russian dolls are in the ratio 6 : 8 : 9. In a set of dolls, the height of the middle doll is 12 cm. What is the height of the smallest doll

Answers

Answer:

Step-by-step explanation:

As 6 is 2 less than 8 so height of smallest doll would be 10cm

12 divided by 8 is 1.5 then multiply that by 6 to get 9

56 + (-56)
Find each sum

Answers

Answer:It equals 0.

Step-by-step explanation:

Because the 56 in parenthesis is a negative so when you add it equals nothing.

the price of a ring was decreased by 25% to £390. what was the price before the decrease?

Answers

Answer:

The original price was 520

Step-by-step explanation:

To find this, we first need to note that we paid 75% of the price. This is because we took 25% off from the original. Now we take the price we paid and divide it by the percentage of it which we paid. This will give us the original price.

390/75% = Total

390/.75 = Total

520 = Total

What is the gcf of 10m^3 +45m

Answers

Answer:

ITS 1

10 = 2 • 5

   3 = 3

   45 = 32 • 5

Answer:

GCF of 40 and 60

Step-by-step explanation:

Solution We first express 20 and 60 as the product of prime numbers 40 = 2 × 2 × 2 × 5 60 = 2 × 2 × 3 × 5. The common factors are 2 × 2 and 5.

angle sum theory

PLS HELP!!

A)74°

B)92°

C)83°

D)82°

Answers

Answer:

the answer must be 74 or 82

Answer:

It's 58

Step-by-step explanation:

That's the answer

Find the missing length of the triangle


HELP!

Answers

Answer:

37

Step-by-step explanation:

the price of a new car is $48,000. If the sales tax rate is 1/3 then how much sales tax is being charged? What is the total cost for the car including tax?

Answers

Florida sales tax is due at the rate of six percent on the $20,000 sales price of the vehicle. No discretionary sales surtax is due.

4/5 cm * 3/8 cm
please answer fast ​

Answers

Answer:

= 3/10 cm or you can put 0.3 cm

Solve these simultaneous equations: 3x = y and x = y - 16

Answers

Answer:

x=8

y=24

Step-by-step explanation:

3x=y

x=y-16

Substitute y for 3x

x=3x-16

Add 16 to each side

x+16=3x

Subtract x

16=2x

Divide each side by 2

8=x

y=3x=3×8=24

y=24

Answer :Value of x is 8Value of y is 24Explaination :

Here we have been given with two equations and we have to calculate the values of x and y. So we would be using substitution method for it.

3x = y (Equation No 1)x = y - 16 (Equation No 2)

Here we can clearly see that value of y is 3x. So we would substitute it in Equation No 2.

>> x = y - 16

>> x = 3x - 16

>> x - 3x = -16

>> -2x = -16

>> 2x = 16

>> x = 16 / 2

>> x = 8

Finding out value of y:-

>> y = 3x

>> y = 3 (8)

>> y = 3 × 8

>> y = 24 [tex] \: [/tex]

Pleaseee helppp answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!

Answers

Answer:

perimeter of any figure can be define the sum of all sides.

perimeter of the figure=33.4ft + 6.5ft + 9ft + 9ft + 9ft + 6.5ft + 7.7ft + 16.7ft

perimeter of the figure=97.8 ft.

Ignore my 1st one!
Find the value of x.

Answers

12^2+x^2=15^2
144+x^2=225
- 144 -144
=81= 9
X=9

Answer:

x=9

Step-by-step explanation:

Use Pythagorean Theorem -> a^2 + b^2 = c^2

a^2 + b^2 = c^2

(12^2) + b^2 = (15^2)

144 + b^2 = 225

225 - 144 = 81

√81 = 9

x = 9

Which point is on the graph of f(x)=2x5^x

Answers

Answer: 1, 10



Step by step explanation:

Mike has $72 and he needs to buy some apples. Which of these equations would represent mike's situation of the apples cost $0.60 per apple and he wanted to find out how many apples he could buy

Answers

Answer:

120 apples

Step-by-step explanation:

Given data

Total amount= $72

Cost per apple = $0.60

The number of apples = Total amount/Cost per apple

substitute

The number of apples= 72/0.6

The number of apples= 120 apples

Hence he will buy 120 apples

Pattern A : 1,3,5,7 .
Pattern B : 1 ,9,25,49

Determine the general formula for the nth term of pattern A .

Hense determine the general formula for pattern B​

Answers

Step-by-step explanation:

for A

[tex]an = a1 + (n - 1)d \\ d = a2 - a1 \\ d = 3 - 1 = 2 \\ an = 1 + (n - 1) \times 2[/tex]

for B

[tex]an = a1 + (n - 1)d \\ d = a2 - a1 \\ d = 9 - 1 = 8 \\ an = 1 + (n - 1) \times 8[/tex]

what is the circumference if the radious is 20

Answers

Answer:

125.6

Step-by-step explanation:

Circumference = 2 x pi x r (radius)

                         = 2 x 3.14 x 20

                         = 125.6

Answer: 120

Step-by-step explanation: 20x3x2

20x3=60

60x2=120

Enzo is buying wallpaper. He can choose one colour, one texture and one thickness for his wallpaper. At his local DIY store, Enzo can choose from 27 different colours 14 different textures. The total number of options available to enzo for his wallpaper is 2268. Work out the number of different wallpaper thicknesses that enzo can choose from.

Answers

Answer:

6 different wallpapers

Step-by-step explanation:

Given

[tex]Colours = 27[/tex]

[tex]Textures = 14[/tex]

[tex]Total = 2268[/tex]

Required

Determine the number of different wallpapers he can choose from

From the question, he can choose 1 from 27 colors;

The number of ways is:

[tex]Colours = ^{27}C_1 = \frac{27!}{(27 - 1)!*1!} = \frac{27!}{26!*1!} = = \frac{27*26!}{26!*1} = 27[/tex]

From the question, he can choose 1 from 14 textures;

The number of ways is:

[tex]Textures = ^{14}C_1 = \frac{14!}{(14 - 1)!*1!} = \frac{14!}{13!*1!} = \frac{14*13!}{13!*1} = 14[/tex]

Assume the total number of wallpapers is x and he can only select 1.

The number of ways of selection is:

[tex]Wallpapers = ^{x}C_1 = \frac{x!}{(x - 1)!*1!} = \frac{x* (x - 1)!}{(x - 1)!*1!} = x[/tex]

So, the total selection is:

[tex]Colours * Textures * Wallpapers = Total[/tex]

[tex]27 * 14* x= 2268[/tex]

[tex]378* x= 2268[/tex]

Divide both sides by 378

[tex]\frac{378* x}{378}= \frac{2268}{378}[/tex]

[tex]x= \frac{2268}{378}[/tex]

[tex]x= 6[/tex]

Hence, the number of different wallpaper is 6

what does a square pluse be square

Answers

Answer:

a squared + b squared = c square

Step-by-step explanation:

In this formula c represents the length of the hypotenuse a and b are the legnths of the other two sides. if two sides of a right triangle are known you can subsitute these values in the formula to find the missing side

what is the number sentence​

Answers

Answer:

A number sentence is a mathematical sentence made up of numbers and signs. So for example 15 + 7.

They can use any of the mathematical operations so addition, subtraction, multiplication and division

Number sentences can be true or false. Example, 5 + 7 = 13

good luck, i hope this helps :)

Solve:
5x-2y = 6
5x-2y = -4

Please show your work or explain what method you used to solve it (substitution, graphing, or elimination)

Answers

No solution they are the same equation with different answer so there can’t be an answer

Pierce bought 16 ounces of motor oil for $2.24. How much is motor oil per ounce?

Answers

Answer:

$0.14

Step-by-step explanation:

Answer:

0.14

Step-by-step explanation:

2.24÷16=0.14

Next time, the rabbit from the previous problem start at 10 where on the number line can he be after the same three jumps?

Previous problem : A rabbit started at point 0 and made 3 jumps: a jump of 4 units, then a jump of 2 units, and then a jump of 1 unit. We do not know the direction of either jump. What are all the possible numbers can this rabbit be now?

Answers

It should be noted that since the rabbit from the previous problem started at 10, it would be at 17 units on the number line after the same three jumps.

What is a number line?

A number line is a type of graph with a graduated straight line which comprises both positive and negative numerical values. From the previous problem, the total distance covered by the rabbit is given by:

Total distance = 4 units + 2 units + 1 unit

Total distance = 7 units.

Since the second point is at 10 units and the open circle arrow points to the right of the number line, the rabbit would cover 7 more distance from this point:

Total distance = 10 units + 7 units

Total distance = 17 units.

Learn more about number on:

https://brainly.com/question/30567031

#SPJ1

which number is halfway between 318970 and 719070​

Answers

Answer:

it is 519020

Step-by-step explanation:

is y=6x+3 proportional or nonproportional

Answers

Answer:

f the x and y coordinates form proportional relationships, then there is some non-changing number (a constant) that when multiplied times x will create y

Step-by-step explanation:

PLEASE HELP ASAP!!!!!!

Answers

Answer:

No

Step-by-step explanation:

Because after u substitute the 15 for the x u get 38>42 which is incorrect

Other Questions
Please help me with this question What is the missing length? Tom has a total of 15 stamps. some are worth 10 cents and some are worth 20. The value of the stamp is 2.40. how many of each stamp does he have? A. what are you trying to find?B. what system of equations that models this scenario? PLS HELP ASAP WILL GIVE BRAINLIEST Look at the figure below:If sin y = 9/c and tan y = 9/d, what is the value of cos y? Write a lab report for this lessons lab. Be sure that your report: includes all major elements of a lab report. meets your teachers content and format expectations. is clearly organized and formatted. demonstrates strong scientific reasoning and writingthis is about : Building Proteins from RNA protection from enemies20.What is the importance of a specialization of labor in the early communities?a. People work together to get the things they need c. It allows people to control the floodsb. It was not important to the hunter-gatherer society d. It allows everyone to be equal Suppose you perform a calorimeter experiment to determine the molar heat of neutralization of an unknown acid, H A HA, with sodium hydroxide, N a O H NaOH. You mix 37.2 mL of 0.50 M H A HA with 56.8 mL of 0.75 M N a O H NaOH and calculate the heat of reaction as -1.6 kJ. What is the molar heat of neutralization (in kJ/mol) for the unknown acid Complete the table to show an equivalent ratio where the total amount is 100 grams. Is the settlers during the american revolution wanted independence from _________rule. How can I use the number line to find the sum: 1 12 + (1 12) 2.8.9 An e-mail filter is planned to separate valid e-mails from spam. The word free occurs in 60% of the spam messages and only 4% of the valid messages. Also, 20% of the messages are spam. Determine the following probabilities: a. The message contains free. b. The message is spam given that it contains free. c. The message is valid given that it does not contain free. science Society of your school wishs to visit the moragahakanda dam. write a letter to the Director General of the project asking permission to visit the place. A baker is filling equal-sized containers with sugar. Four pounds of sugar fill 1 1/3 containers. How many pounds fit in each container? Can anyone explain how to do this? What is the best programing language to use for building video games? What is the greatest common factor of 36 and 48? My name is Wade Watts; I'm 18 and live in the Portland Avenue Stacks in my Aunt Alice's trailer on the edge of Oklahoma City. HELPPPP ASAPPP MARKING BRAINLIEST Which of Earth's five spheres is involved when a volcano erupts? Jak dugo trwaa kara prometeusza?