Someone please helppp

Someone Please Helppp

Answers

Answer 1

Answer:

112

Step-by-step explanation:

A quadratic can be written in the form

ax^2 +bx +c

-3x^2 +4x+8  

a = -3  b = 4  c = 8

the discriminant is

b^2 -4ac

(4)^2 - 4(-3) (8)

16+96

112

Answer 2

Answer:

112

Step-by-step explanation:

Discriminant = b² - 4ac

Substitute the values for the variables.

[tex](4)^2-4(-3)(8)\\16-4(-24)\\16-(-96)\\16+96\\112[/tex]


Related Questions

PART A: Find a rational number that is between 5.2 and 5.5. Explain why it's rational.
PART B: Find an irrational number that is between 5.2 and 5.5. Explain why it is irrational. Include the decimal approximation of the irrational number to the nearest hundredth.​

Answers

Answer:

A. 5.3 B. 5.4

Step-by-step explanation:

A. because its a fraction

B. because it cannot be express as a ratio of two integers

Simplify
1/2 - 3 (1/2 + 1)*
Enter your answer in the box as a fraction in simplest form.
&

Answers

Answer:

Final answer is  ---> -4

Step-by-step explanation:

Factories (x+2y)^3+(x-2y)^3
With full explanation

Answers

Answer:

[tex]\boxed{=2x(x^2+6y^2)}[/tex]

Step-by-step explanation:

Remember:

[tex](a+b)(a-b)=a^2-b^2\\\\a^3+b^3=(a+b)(a^2-ab+b^2)\\\\\\(x+2y)^3+(x-2y)^3\\\\=(x+2y+x-2y)((x+2y)^2-(x+2y)(x-2y)+(x-2y)^2)\\\\=2x(x^2+4xy+4y^2-(x^2-4y^2)+x^2-4xy+4y^2)\\\\=2x(x^2+6y^2)\\[/tex]

Find the value of x. Round to the nearest tenth

Answers

Answer:

658ft

Step-by-step explanation:

you first have to calculate the angle next to that 28°angle,if you look at the two they form a 90° so to find that angle you have to subtract 90-28=62

the x is the opposite of angle 62 and the 350 si the adjacent so you can use the tan ratio to find the answer

tan62=opposite/adjacent

tan62=y/350

y=tan62×350

=658ft

I hope this helps

I need help with this question

Answers

Well, it's hard to really help because I can't draw a graph on here, but what you can do is make a list of a couple numbers (say -3, -2, -1, 0, 1, 2, and 3), and then use them as values of x to find y. Once you have found y, use those two values as your coordinate to plot your line:

x = -3, y = -3 + 4 = 1, so the coordinate would be (-3, 1).

x = -2, y = -2 + 4 = 2, so the coordinate would be (-2, 2).

]Hope that helps! Can you do the rest?

2(x + 4) - 8 = 36-10

Answers

2x + 8 - 8 = 26
2x = 26
x = 13

Answer:

x=13

Step-by-step explanation:

the product of -9/17 and its reciprocal​

Answers

the product of -9/17 and it's reciprocal will be 1

Rosa has blue cubes with a edge length of 55 mm and red cubes with a edge length of 45 mm. She wants to stack up the cubes in two columns, one of blue cubes and the other one of red cubes, until both columns are of equal height. What is the least number of each color cubes that she needs to make this possible?

Answers

Answer:

?

Step-by-step explanation:

My challenge for brainly plus.

List the coordinates for the plotted points A, B, C, and D.

Answers

Answer:

A= (3,1) ; B=(-2,-1) ; C=(-4,1) ; D=(-4,0)

Step-by-step explanation:

Plotted points are expressed by (x,y) , where the x is equal to the value that you read on the x plot and y is equal to the value that you read on the y plot.

From a point on the ground 100m from its base, the angle of elevation of the top of the Burj Khalifa tower in Dubai is 83.1°. Draw a sketch and use it to calculate the height of the tower. ​

Answers

Answer:

Step-by-step explanation:

[tex]tan \ 83.1 = \frac{opposite \ side}{adjacent \ side} = \frac{BC}{100}\\\\8.2635 = \frac{BC}{100}\\\\8.2635*100=BC\\\\826.35 = BC[/tex]

Height of tower = 826.35 m

The cycling road race through the Adelaide Hills started at 11:50am and the winner
Took 74 minutes. The winner crossed the finishing line at

Answers



The winner crossed the finish line at
13:04pm

one tree is 6 feet tall. Another tree is 3 1/4 feet tall. How much taller is the larger of the two trees?

Answers

Answer:

2 3/4 feet

Step-by-step explanation:

HELPPPPPPPP!!!!!!!!!!!!!!!!!

Answers

1)3
2)5/4
3)1
4)3/2
5)1.3
6)4
7)0
8)1
9)7
10)2

Jillian bought 3 pounds of apples for $3.09 per pound. she then bought 6 pounds of peanuts for $0.87 per pound. How much did Jillian spend all together?

Answers

Answer:

Jillian spent $14.49 altogether.

Step-by-step explanation:

Let a = pounds of apples, p = pounds of peanuts, and t = total cost

t = 3.09a + 0.87p

t = 3.09(3) + 0.87(6)

t = 9.27 + 5.22

t = 14.49

Michelle and her brother are planning a holiday. They decide to invite three friends to join them. The plane tickets cost 105$ each way, and bus tickets cost 12 each way. If each traveller puts in 600$, how much money will be left over altogether to spend on the holidays.
Also what is the explanation to working this question out.

Answers

Answer:

first of all we don't know the exact lift they took but here's your answer:

if they took the plane then that's easy

600×5=3000

105×5=525. 3000-525=2475

while for the bus

3000-60=2940

36. Given that y varies directly with x,
what is the equation of direct variation
if y is 3 when x is 7?

Answers

Answer:

A. y = 3/7x

Step-by-step explanation:

Direct variation: y = kx

3 = 7k

k = 3/7

y = 3/7x

Find the slope (rate of change) of each representation. Please explain how you got it.

Answers

Answer:

m = -3/2

Step-by-step explanation:

To find the slope of the representation, use the slope formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

I'll pick (-4, 9) and (-2, 6) in this instance.

[tex]m=\frac{9-6}{-4-(-2)}\\\\m=-\frac{3}{2}[/tex]

Therefore, the slope of the representation is -3/2.

Answer:

-3/2

Step-by-step explanation:

To find the slope, we can use the formula

m = ( y2-y1)/(x2-x1)

    = ( -6 -9)/(6 - -4)

    = (-6-9)/(6+4)

     -15/10

  -3/2

A 5 m high flagpole casts a shadow 4 m in length. What is the height of a tree that casts a shadow of 20 m at the same time?​

Answers

Answer: 16m

Step-by-step explanation:

If we're assuming the ratio of height to shadow lenght is the same then

5:4

also equals

20:16

so the tree is 16 m tall

In an effort to persuade customers to reduce their electricity consumption, special discounts have been offered for low consumption customers. In Florida, the EPA estimates that 70% of the residences have qualified for these discounts. If, instead, a sample of 20 residences is selected, what is the probability 12 or more will have qualified for the discounts

Answers

Answer:

please mark me brainlist

Step-by-step explanation:

p = proportion of residents qualified for discounts = 0.70

Sample size = 20

If X is the no of residences selected for discounts then x is binomial with (20,0.7)

P(X>=12) = 0.8867

3. Find x.
Please help me

Answers

Answer:

A. 29.91

Step-by-step explanation:

tan(x) = opposite leg / adjacent leg

tan(41) = 26 / x

0.869... = 26/x

26 / 0.869... = x

x = 29.91...

What happens when you subtract a greater positive
number from a lesser positive number?

Answers

Answer:

You get negatives

Step-by-step explanation:

Imagine that you have 67 and you need to subtract that by 107

you would do 67-107 or 107-67 then add a negative symbol.

67 - 107 = -40

What is a rule for the height
as an algebraic expression?

Answers

Answer: lenght x widthx height

Step-by-step explanation:

!!!HELP ME!!! ILL GIVE YOU BRAINLIEST!!!!

Celine has earned the following homework scores in her history class: 5, 0, 4, 8, 10, 9, 4, 6, 2. There is one homework assignment to go and Celine needs a homework average of at least 8. If each homework assignment is worth a maximum of 10 points, can she achieve her needed average?

Answers

Answer:

She can not achieve her average.

Step-by-step explanation:

For her homework average to be 8 or above, she needs to have at least 80 total points to be divided among 10 assignments.

If you add up all the values, 5, 0, 4, 8, 10, 9, 4, 6, 2, you would get 48.

She can not achieve her average because even with the maximum amount of points, 10, 58 is still less than 80.

Answer:

No

Step-by-step explanation:

Most of her scores are under 50 or 50

5 2 4 4 0

Which regular polygon can be used to form a tessellation?




I need help

Answers

Answer:

The regular polygon that can be used to form a regular tessellation are the equilateral triangle a square and a regular hexagon

Find the area of the triangle

Answers

Answer:

73.64 ft²

Step-by-step explanation:

bad at explaining but hope this helped <3

Correct answer gets brainliest and 5 stars

Answers

Answer:

16 ft

Step-by-step explanation:

Slant Height=sqrt(Radius^2+Height^2)

Height=sqrt(20^2-12^2)=sqrt(256)=16 ft

4) There are 4 marbles and 3 cubes in a board game. The marbles are black, blue, yellow, and red. The cubes are numbered 1, 2, and 3. A player randomly selects one marble and one cube. What are all the outcomes? How large is the sample space? possible​

Answers

Answer:

Here is the sample space, its size is 4*3 = 12:

Black 1Black 2Black 3Blue 1Blue 2Blue 3Yellow 1Yellow 2Yellow 3Red 1Red 2Red 3

Answer:

According to your question :-

four marbles 3 cubes

four marbles :-

black blueyellow red

cubes numbered as :-

123

_______________________

outcomes :-

At black ..

Black 1Black 2Black 3

At blue ..

Blue 1Blue 2Blue 3

At yellow ..

Yellow 1Yellow 2Yellow 3

At red ..

Red 1Red 2 Red 3

________________________

Size ...

4 X 3 = 12 size,,

hopes its helps you.

what is the degree of 5xyz​

Answers

Answer:

3

Step-by-step explanation:

Add up the exponents of the variables

5xyz​ = 1+1+1 = 3

The degree is 3

Answer:

First, just to recap, a  degree of a polynomial is the highest power that it is raised to.

For example, 2x^4 + 3x - 7, is a 4th degree polynomial.

5xyz is a has a degree of 3, since the highest power that it is raised to is to the power of 1, and has 3 terms.

Let me know if this helps!

someone help me please

Answers

Step-by-step explanation:

to make it easier we bring it to the pure y = ax + b form.

y + 1 = 7/8 x

y = 7/8 x - 1

x = -2

y = (7/8 × -2) - 1 = -7/4 - 1 = -7/4 - 4/4 = -11/4

x = 0

y = (7/8 × 0) - 1 = 0 - 1 = -1

x = 1

y = (7/8 × 1) - 1 = 7/8 - 1 = 7/8 - 8/8 = -1/8

x = 8/7

y = (7/8 × 8/7) - 1 = 1 - 1 = 0

x = 2

y = (7/8 × 2) - 1 = 7/4 - 1 = 7/4 - 4/4 = 3/4

If carina can ride her bike at a speed of 7 mph, it will take her 3 hours to travel 21 miles. True or false?

Answers

Answer:

True

Step-by-step explanation:

We know that distance = rate * time

21 miles = 7 miles per hours * 3 hours

21 miles = 21 miles

True

True because we know distance=rate*time
Other Questions
4 7/10 + 6/8 Fractions please help cant solve. used two methods but answer isnt the same as the answer page from the book Question 3 of 10A large number of Germana immigrated to the United States becauseA. they wanted to spread their religious beliefs,B, they were on the losing aide of a revolutionC. their main eropa had been destroyed by disease,D. they wanted to avoid being forced to fight in a warSUBMI h2o how many molecules eleven less than five times a number is twenty four? L xo l g? Tc dng ca l xo which energy does a car travelling 30 m/ph as it slows have:a). chemical energyb). thermal energyc). kinetic energyplease helpp Please help with questions 11-13! Ill give brainliest Solve this inequality:-12a +7 Easy as Pie How do the events of the story change the narrator? A. He decides he will never again allow his mom to interfere with his plans to be a professional baseball player.B. He recognizes that his mom will never support him orunderstand him, and he tries to accept that. C. He changes his perspective and understanding of his mother when he see her work so hard at baking. D. He shows his mom that he is old enough to make his own choices, and she accepts his decision. Answer: C is the correct answer. "He changes his perspective and understanding of his mother when he see her work so hard at baking." I was doing the test, and there was 6 questions, and only one was on Brainly. So I asked this question, and answered it myself. I will be doing the other questions as well :) genesis high grade heat and pressure is steps in what If the mass of an object is 10 kg and thevelocity is -4 m/s, what is the momentum?A. 4 kgm/sB. -40 kgm/sC.-4 kgm/sD. 40 kgm/s Kiel Canal connects which among the following?[A] Baltic Sea and North sea[B] Baltic Sea and Norwegian Sea[C] Baltic Sea and White sea[D] White Sea and North Sea nasa's voyager 1 rocket was able travel 1.224 x 10^5 kilometers in two hours. what is its average speed in kilometers per second?6.12 km per sec10.2 km per sec17 km per sec61,200 km per sec nesecito las respuestas Please help! Giving brainiest! The dot plots below show the test scores of some mathematics students and some science students: (View the attached image) Based on visual inspection of the dot plots, which group of students appears to have the larger average score?a. The mathematics studentsb.the science studentsc. Both groups are similard. Not enough information is available to draw a conclusion. In localities where community consent is the norm, Question 1 options: community consent to participate in the research study is sufficient and no informed consent from an individual participant is required. federal regulations preclude the conduct of PHS-funded research a family member's consent for another individual may be sufficient, as long as community consent is given it may be appropriate to obtain community consent in advance of obtaining informed consent from the individuals. which of the following cannot be increased by using a machine of some kind? work, force, speed, torque Evaluate the expression A project manager forgets to assess how national holidays and team member vacations will affect the projects completion date. Now, because of team member time off, the project delivery will be two weeks late. What flexible planning strategy could the project manager have used to avoid the delay? de government ministres ovic Kate wants to buy a piece of land in Duna to start her vegetable farming. The piece of land worth $10.000. her mother gave her $5.000 as a gift and her savings is $5.000 She will sell be car for $10,000 cash. 1.)Work out how much money she needs in order to buy the farm.2.)State two important decisions she needs to make before starting her larmy business .3.)If she has to borrow from a bank, name the security the bank would need from her .