HELP PLEASE Help please

HELP PLEASE Help Please

Answers

Answer 1

Answer:

your answer will be option B. x²-2x-9

Step-by-step explanation:

5x²+4x-1+2x²+3+y=8x²+2x-7

7x²+4x+2+y=8x²+2x-7

y=8x²+2x-7-7x²-4x-2

y=x²-2x-9

hope it helps...

Answer 2

Answer:

B

Step-by-step explanation:


Related Questions

Please help me, I don't know how to solve it

Answers

Answer:

2a-3 and a+4

Step-by-step explanation:

Given the equation

2a²+8a -15 = 3a - 3

We are to find one of its factors

Equate the expression to zero

2a²+8a -15 = 3a - 3

2a²+8a -15 - 3a + 3 = 0

Collect the like terms

2a²+8a - 3a - 15 + 3= 0

2a²+5a - 12= 0

Factorize

2a²+8a-3a - 12= 0

2a(a+4)-3(a+4) = 0

(2a-3)(a+4) = 0

Hence the factors are 2a-3 and a+4

WILL GIVE BRAINLIEST!!!
In a test of hypothesis for a mean, which statement is CORRECT?

The population must be normal because that is the only case when the sample mean is Normally distributed.
As long as the population distribution consists only of positive values, sample size does not matter.
The population distribution can be any distribution because the sample mean is always Normally distributed.
The test requires that the sample mean is normally distributed; this requires that either the population distribution is Normal or the sample size exceeds 30.

Answers

Answer:

As long as the population distribution consists only of positive values, sample size does not matter.

Step-by-step explanation:

As long as the population distribution consists only of positive values, sample size does not matter.

This is a hypothesis because a hypothesis is basically a prediction of what's gonna happen; the other choices are mostly facts that can be backed up, this can only be confirmed after it happens since it can end in different ways. This is a prediction where it says that if the population distribution continues to go on to positive value, then the sample size won't matter; this can come out in different ways, the sample size could matter or it would have to be negative values, e.t.c. This has different ways it could end up.

A radio station is giving away prizes. They give away CD every 18 minutes and a gift card every 24 minutes. The radio station gave away the prizes at 1:00 pm. When is the next time the radio station will give away both prizes again at the same time?

Answers

Answer:

Apne see kar Bsdk. Is Bais bano aur desh ko sangali warna patak ke chod denge XD

In which step does a mistake first occur?
8 + 2 + (3 X 3 -2)
Step 1: 8 +2 + (3 x 1)
Step 2: 8 +2 + 3
Step 3: 4 + 3
Step 4: 7

Answers

Answer:

Step 3 because they didn't add correctly

Which expressions simplify to 4? Select all that apply.

Answers

Answer:

B and D

Step-by-step explanation:

Please Help Will Give Brainliest

Answers

Answer:

1) 70 for both of them

2) Plot A's range is 100-50 = 50, Plot B's range is 100 - 40 = 60 so Plot A has the lesser range

3) Plot B's IQR is 85 - 60 = 25, Plot A's IQR is 80 - 65 = 15 so Plot B has the greater IQR

4) A: 80, B: 85

5) A: 65, B: 60

6) 50

7) 100

8) Plot B, see #2 for work

9) 50% - 50% of data is always between Q1 and Q3

10) 25%

11) 25%

Please please i need help i will mark u brill

Answers

Answer:

Step-by-step explanation:

8d + 54 = 150

Putting value of D = 12 in the equation

8(12) + 54 = 150

96 + 54 = 150

150 = 150

Bringing like terms on one side

150 - 150 = 0

Answer:

Correct.

Step-by-step explanation:

8d+54=150

Putting d=12 we get

8(12)+54=150

96+54=150

150=150

What is the measure of angle A????



Please help !!!! Please help!!!!! I gave extra points, if you put a link I will report you !

Answers

Answer: I could be wrong- but I thinkkkk its 42

The correct answer is 42

10,045 rounded to the tens place

Answers

Answer:

10045 rounded to nearest tens is10050

A mountain climber started at 150 feet below sea level. What would he need to climb to so that his starting spot and his ending spot were opposites?

Answers

Answer:

Your answer is 24.333.

Step-by-step explanation:

..If you round this, it would be 24 or 24.3. you get this answer by doing 3650 divided by 150.

What are the factors of 25x^2 – 9y^2?

A. (x-9y)(25x+y)
B. (x+9y)(25x-y)
C. (5x-3y)(5x-3y)

Answers

It’s C
Hope it helps

Look at the image below, please! (I mark brainliest!)

Answers

Answer:

C, D, E

Step-by-step explanation:

10% of 33 is the same as the following, 0.1 * 33, 1/10 * 33, and 10/100 * 33, because they are all multiplying 33 by 0.1

The table represents equivalent ratios of x to y. Find the missing numbers in the table.
Х
y
15
20
16
25
o
30
24

Answers

The answers are 12 and 18 very simple

PLSSS HELP (4x - 1)
(3x)

Answers

Answer:

x = 13

Step-by-step explanation:

3x + 4x-1 +90 = 180

7x = 91

x = 13

Please take a look at the picture. :)

Answers

Answer:

3÷1/6

Step-by-step explanation:

here is your answer. If it helps don't forget to like and Mark me

Find the missing side of a right triangle a b c

Answers

Answer:

Use Pythagorean Theorem.

Step-by-step explanation:

To find any side of a right angled triangle, we use Pythagorean Theorem. It states that the square of hypotenuse is equal to the sum of squares of it's sides.

Let hypotenuse is a

Perpendicular is b

and base is c

According to the theorem:

a²= b² + c²

Add values and solve for the unknown variable / side.

If you had added the problem, I would have elaborated more but still this will help you out.

The question is on the ss btw

Answers

Answer:

The shop

Step-by-step explanation:

Given

Shop

[tex]Cost = E9[/tex]

[tex]Bag = 12.5kg[/tex]

Supermarket

[tex]Cost=E1.83[/tex]

[tex]Bag = 2.5kg[/tex]

Required

The better value

To do this, we simply calculate the unit price.

This is calculated as:

[tex]Unit = \frac{Price}{Bag}[/tex]

So, we have:

Shop

[tex]Unit = \frac{9}{12.5}[/tex]

[tex]Unit = 0.72[/tex]

Supermarket

[tex]Unit = \frac{1.83}{2.5}[/tex]

[tex]Unit = 0.732[/tex]

At the shop, the unit price is £0.72 per bag while at the supermarket, the unit price is £0.732

The best value is at the shop, because it is cheaper

i.e.

[tex]0.72 < 0.732[/tex]

The length of a rectangular swimming pool is exactly three times as long
as its width. If the pool has a perimeter of 472m find the width of the pool

Answers

Answer:

59m

Step-by-step explanation:

Length= 3 × ( width)

But perimeter= 2width + 2 Lenght= 472

Let length= X

Width= Y

X= 3Y.........eqn(1)

2X + 2Y= 472........eqn(2)

Substitute X= 3Y in eqn(2)

2(3Y) + 2Y = 472

6Y + 2Y= 472

8Y= 472

Y= 59 m

Hence, the width of the pool is 59 m

I APRECIATE HELP. A regression line was calculated for three similar data sets (A, B, and C) that measure the height of a plant (in inches) over time (in days). The residual plots for each set are shown. Based on the residuals, which data set is best fit by the regression line?

Answers

The data set that is best fitted by the regression line is; Data Set B

What are regression residuals?

Residuals are described as the distance of  each point from the regression line.  Thus, the farther each point is from the line, the worse the fit and the closer each point is to the line, the better the fit.

Graph C has points that are not tightly centered around a line.  This is not a good fit.

Graph A has a straight line; it is not a good fit.

Graph B, shows us that all of the points are tightly centered around a line; this is a good fit.

Read more about Regression Residuals at; https://brainly.com/question/17844286

#SPJ5

What fraction of the whole are the blue piece, the orange piece, the red piece, and the purple piece. How do you know?

Answers

red: 2/4
blue: 1/4
Purple: 1/4

Answer:

blue piece is 1/2 because it takes up half of the square, the purple is only 1/4 because it would take 4 purple to fill the big square and the orange is half of the purple so it takes double of pieces so 8 pieces which is 1/8

There are 9 cherry trees in Edgar's orchard, and he wants to plant more. It takes him an hour to plant each tree.
Let h represent the number of hours Edgar spent planting and c represent the total number of cherry trees he will have.

Answers

1: 1

3: 4

5: 9

7: 16

sorry if this doesn't make sense if it does i hope it helped:)

The diameter of a circle is 10 cm find its circumference in terms on pi

Answers

Answer:

31.41593 cm

Step-by-step explanation:

Using the formulas

C=2πr

d=2r

Solving forC

C=πd=π·10≈31.41593cm

If the Math Olympiad Club consists of 13 students, how many different teams of 5 students can be formed for competitions?

Answers

Answer:

2 teams

Step-by-step explanation:

13 divided by 5 is 2.6, but you cannot split a person in half, so it would be two teams with a remainder of three people.

There are 1287 different teams of 5 students can be formed for competitions.

What is Combination?

A combination is a technique to determines the number of possible arrangements in a collection of items where the order of the selection does not matter.

Given that;

The Math Olympiad Club consists of 13 students.

And, To form different teams of 5 students can be formed for competition.

Hence, We get;

Number of different teams of 5 students can be formed for competitions is,

⇒ ¹³ C ₅

⇒ 13! / 5! 8!

⇒ 1287

Thus, There are 1287 different teams of 5 students can be formed for competitions.

Learn more about the combination visit:

brainly.com/question/28065038

#SPJ2

On the unit circle, an arc of length 2 subtends an angle, β. What is the radian measure of β?

Answers

Answer:

[tex](d)\ \beta = 2\ rad[/tex]

Step-by-step explanation:

Given

[tex]L =2[/tex] -- length of the arc

[tex]r = 1[/tex] --- radius of a unit circle

[tex]\beta =[/tex] the subtended angle

Required

Find [tex]\beta[/tex]

The length of an arc is:

[tex]L = r * \beta[/tex]

This gives:

[tex]2 = 1 * \beta[/tex]

[tex]2 = \beta[/tex]

Make [tex]\bets[/tex][tex]\beta[/tex] the subject

[tex]\beta = 2[/tex]

Hence:

[tex]\beta = 2\ rad[/tex]

Answer:

2rad

Step-by-step explanation:

The sequence below shows the
number of cells in a sample at
the end of the four hours. 6, 12,
24, 48, which recursive formula
models the sequence?

Answers

Answer:

Step-by-step explanation:

Option B 2. Now is the correct answer because when we multiply 6 by 2 we get 12 then we multiply 12 by 2 we get 24

The distance from Detroit, MI to Paris, France is approximately 3930 mi. Flying from Detroit to Paris takes 8 hr with the jet stream. The return flight takes 8.3 hr since the plane is flying against the jet stream.
a. The speed of the plane in still air, rounded to the nearest whole number, is
b. The speed of the jet stream, rounded to the nearest whole number, is

Answers

Answer:

a. 482

b. 9.0

Step-by-step explanation:

The speed of the plane in still air is approx 482 miles per hour(mph). The speed of the jet stream, rounded to the nearest whole number, is 9 mph

How does air stream affects speed of flight?

Flight speed in air stream = Flight speed in still air + effect of air stream

If the flight is going opposit, then:

Flight speed in air stream = Flight speed in still air - speed of air stream

If the flight is going along with flight, then:

Flight speed in air stream = Flight speed in still air + speed of air stream

For this case, we're specified that:

Distance from Detroid to Paris is approx 3930 milesTime it takes by flight along the air stream = 8 hoursTime it takes by flight against the air stream = 8.3 hours

Speed of flight along the stream is:

[tex]S = \dfrac{\delta D}{\delta T} = \dfrac{3930}{8} = 491.25 \: \rm mph[/tex]

Speed of flight against the stream is:

[tex]S = \dfrac{\delta D}{\delta T} = \dfrac{3930}{8.3} \approx 473.49 \: \rm mph[/tex]

Let the speed of air stream be y, and that of the flight in still air be x miles per hour, then we get:

Along air stream:

[tex]x + y =491.25\\[/tex] (in miles per hour)

and Against the stream:

[tex]x - y =473.49\\[/tex] (in miles per hour)

Adding both the equations side by side, we get:

[tex]2x + y - y = 491.25 + 473.49\\\\x = \dfrac{964.74}{2} =482.37 \: \rm mph[/tex]

Using this value, we get the value of y as:

[tex]x + y =491.25\\y = 491.25 - x = 491.25 - 482.37 = 8.88 \: \rm mph[/tex]

Rounding to the nearest whole numbers, we get:

x = 482 mph, and y = 9 mph

Thus, the speed of the plane in still air is approx 482 miles per hour(mph). The speed of the jet stream, rounded to the nearest whole number, is 9 mph

Learn more about motion in stream here:

https://brainly.com/question/14297576

A plane is traveling at a constant rate described by d = 525t where d is the distance and t is the time. What is the constant of proportionality?

Answers

Answer:

50 points

Step-by-step explanation:

Answer:

525 is the constant of proportionality

Step-by-step explanation:

Pedro is building a playground in the shape of a right triangle. He wants to know the area of the playground to help him decide how much sand to buy. Compose the playground and a matching triangle into a rectangle. What are the dimensions of the​ rectangle? H= 4 1/3yd L=18yd

Answers

Answer:

it equals 39 yd²

Step-by-step

Area= 1/2 base= 18  height= 4 1/3

multiply 1/2 x 18 = 9

9 x 4 1/3= 39

the answer is 39 yd²

guys please i need help in this question, whoever gets it right will get a brainliest

Answers

Answer:

4/20 or 1/5 if you want it simplified

PLEASE HELP ASAP
A cone's circular base has a diameter of 6 feet. The volume of the cone is 176 cubic feet. What is the approximate height of the cone?

Answers

Answer:

18.68 feet

Step-by-step explanation:

- Just did the quiz

- Also plugged it into a calculator I found online

Answer:

18.68 feet

Step-by-step explanation:

it passed the quiz

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