Use a graphing calculator or other technology to answer the question.

Which quadratic regression equation best fits the data set?

The value of x is equal to -5/6

To solve this question, we have to add two polynomials together. The polynomials are;

This involves adding of two or more different polynomials together. The polynomials adding together are or must be of the same degree. i.e x^2 must add to another coefficient of x^2 and x^3 adds to another coefficient of x^3 and so on.

In this given question, let's add the polynomials together.

[tex](3x^2+3x+5) + (7x^2-9x = 8\)\\3x^2 + 7x^2 + 3x-9x+5-8 =10x^2-6x-3[/tex]

Now, let's equate this with the last polynomial given

[tex]10x^2-6x-3=10x^2-12x-13\\10x^2-10x^2-6x+12x-3+13\\0+12x+10\\12x=-10[/tex]

Let's solve for x

[tex]12x=-10\\x=-\frac{10}{12}\\x = -\frac{5}{6}[/tex]

The value of x is equal to -5/6

Learn more on addition of polynomials here;

https://brainly.com/question/4142886

Answer:

y=2, x=5

Step-by-step explanation:

we can subtract the system of equations to eliminate x and to find the value of 1 y

x+3y=11

minus

x+2y+9

=y=2, now we can replace the value y (2) into either equation to find the value of x

x+3(2)=11

x+6=11

x=5

Answer: yes

Step-by-step explanation:

Side JH and side HI are congruent and angle J and angle I are congruent so the two triangles are also congruent

The given two triangles EJH and EIH are congruent by the RHS congruency rule of two triangles.

Congruence of triangles:

If two or more triangles having same size and shape, then they are congruent to each other.

Every angle and sides are must be equal to each other and hence area is also equal.

How to show congruence in right angled triangles?

Here we have given that two triangles EJH and EIH, both are right angled triangles.

In any two right angled triangles having same hypotenuse and base side then they are congruent to each other by the RHS congruency

Here we have given side HJ ≅ side HI

∠EJH = ∠EIH = 90°

The common side EH is hypotenuse for both that is side EH = side EH

Therefore by RHS criteria these two triangles are congruent.

Learn more about right angled congruency here-

https://brainly.com/question/1675117

#SPJ2

Step-by-step explanation:

given hypotenuse (H), find opposite (O) :

using sin ( SOH),

sin 45° = opp. / hyp.

sin 45° = x / 4√2

x = 4√2 × sin 45°

x = 4

hope this helps you!

-s.

Answer:

8 hours

Step-by-step explanation:

For this question you would use long division what's 44 divided by 5.5=8

5.5 x 1=5.5

5.5 x 2=11

5.5 x 3=16.5

5.5 x 4=22

5.5 x 5=27.5

5.5 x 6=33

5.5 x 7=38.5

5.5 x 8=44

Hope it helps!   :)

Answer:

[tex] \huge{ \boxed{ \tt - 84}}[/tex]

Step-by-step explanation:

[tex] \sf \rightarrowtail - 42(y + 31)[/tex]

[tex] \\ \\ [/tex]

[tex] \sf \rightarrowtail - 42( - 29 + 31)[/tex]

[tex] \\ \\ [/tex]

[tex] \sf \rightarrowtail - 42(2)[/tex]

[tex] \\ \\ [/tex]

[tex] \sf \rightarrowtail - 42 \times 2[/tex]

[tex] \\ \\ [/tex]

[tex] \sf \rightarrowtail - 84[/tex]

Step-by-step explanation:

first you convert 3 3/4 to an improper fraction

also convert 12/3to an improper fraction

3 3/4= 15/4

1 2/3=5/3

15/4 x5/3

=75/12

To mixed fraction it is 6 1/4

To determine 1) the proportions of the populations for the different schools for the year 2015-2016, and 2) the proportion of the School of Nursing enrollment for the three school years, the following calculations must be made:

Therefore, 1) in 2015-2016, 8.54% of students enrolled in AM, 25.89% in dentistry, 5.19% in ELAMS, 14.99% in Med. Tech, 1.37% in nursing, 12.49% in NHM, 4.69% in optometry, 15.61% in pharmacy, 7.89% in Sci. Tech, and 3.29% in Grad. Sch.; and 2) the proportion of the School of Nursing enrollment for the three school years was 1.37%, 1.20% and 1.06% respectively.

Learn more about proportions in https://brainly.com/question/2548537

The conclusion is valid in this instance because the sample is homogenous and an experimental study was performed.

An experimental study is one in which there is a dependent variable and there is a dependent variable. Also a control is used to establish the validity of the results.

In this case the dependent variable is the level of softness after treatment while the independent variable is the type of water softener used.

The conclusion is valid in this instance because the sample is homogenous and an experimental study was performed.

Learn more about experiment: https://brainly.com/question/9199868

Answer: 230

Step-by-step explanation:

Answer:

230.582

Step-by-step explanation:

math, sorry if its wrong im not good with math

23) The proof that ΔRSU is congruent to ΔTUS is from; SAS Congruency theorem.

18) The proof that ΔHOW and ΔNEW are congruent is from; SAS congruency theorem.

23) We are given a rectangle RSTU with diagonal US.

Now, we are told that;

UR is parallel to ST

∠R and ∠T are right angles

We can say that for ΔRSU and ΔTUS, that US is equal to itself in both cases by the reflexive property of congruence.

Now, since ∠R and ∠T are right angles, it means that UR is equal to ST.

Thus for the two triangles;

UR = ST

US = US

∠R = ∠T

There are two corresponding equal sides and one corresponding equal angle and as such, ΔRSU and ΔTUS are congruent by SAS congruency postulate.

18) We are given that;

H O = EN

HW = NW

Now, since HN intersects OE at W, then we can say that;

∠HWO = ∠NWE (Alternate angles)

There are two corresponding equal sides and one corresponding equal angle and as such, ΔHOW and ΔNEW are congruent by SAS congruency postulate.

Read more about Congruent Triangles at; https://brainly.com/question/1675117

Answer:

Denise types faster.

Step-by-step explanation:

In order to get to 12 minutes you must times 4 by 3. When you do this you also must time 13 by 3. That number is greater than Nancy's typing rate, so that means Denise is faster.

Answer:

Personally they both type slow but denise

Step-by-step explanation:

because denise is averaging 3 words 1 minute and nancy is averaging 2 words a minute I type an average of 48 Words per miniute

Answer: Pam has 7 and Bill has 11

Step-by-step explanation:

Answer:

Bill has 11 stickers

Step-by-step explanation:

7+4=11 and 11+7=18

18 is the amount that both Pam and Bill have.

Answer:

179g

Step-by-step explanation:

1ounce = 28g

7 ounces = 196g

375g - 196g

179g

Answer:

5

Step-by-step explanation:

3x5 = 15

20-15 = 5

Answer:

5

Step-by-step explanation:

20-3x5=

3x5=15

20-15=5

hope this helps!!

Step-by-step explanation:

c² = a² + b² - 2ab cosC

or, c² = 22² + 27² - 2(22)(27) cos105

or, c² = 484 + 729 - 1188 (cos105)

or, c² = 1520.48

so, c = 38.99

so, c = 39 ft. approximately (missing side)

Answer:

C. Quadrant I

Step-by-step explanation:

For a fact, that with radioactive substance it will decay and never stop halving itself. So the line of amount of radioactive substance always halves in a specific time. This type of graph are done in a positive unit grids, never on a negative because that would mean, the radioactive substance rather decaying, its absorbing. So the answer will be Quadrant I.

Visual likewise graph given below.

Answer:

Step-by-step explanation:

Both the time and the amount of the substance are positive.

Since both input and output are positive, it is possible in the fist quadrant.

Correct choice is C

Answer

1/13 (non-simplified: 4/52)

Step-by-step explanation:

there are a total of 4 kings, and there is a 4 in 52 chance of drawing a king. that equates to 4/52 which simplifies to 1/13

please shoot a comment if you have an questions.

hope this helped, have a good day :)

Answer:

3x2+(24)(x-(17)

############

Answer:

Tennessee

Step-by-step explanation:

Answer:

B) A market equilibrium price less than $30

Step-by-step explanation:

When the supply curve increases, it shifts to the right, making the market equilibrium price lower because the oversupply of the quantity causes demand to drive down.

It took Lin's dad about 3.6 miles for him to meet up with his family.

Speed is the ratio of total distance travelled to total time taken. It is given by:

Speed = distance / time

Let d represent the distance travelled by Lin to meet up with his family. Hence:

Total time for Lin's Dad = d/0.24 + 5

Total time for Lin = d/0.18

Hence:

d/0.24 + 5 = d/0.18

100d/24 + 5 = 100d/18

1800d + 2160 = 2400d

d = 3.6 miles

Find out more on Speed at: https://brainly.com/question/4931057

Answer:

there are 3.75 cups of bleach in 5 batches of the cleaning solution.

Step-by-step explanation:

Answer: 38

Step-by-step explanation:

We know it's a parallelogram b/c there are 2 pairs of opposite parallel sides.

So this means that AB = DC = 9 and BC = AD = 10 since opposite sides of a parallelogram are congruent.

Meaning perimeter = 9 + 9 + 10 + 10 = 38

Answer:

Step-by-step explanation:

Triangles ADB and CDB are congruent, so each is half the total area. The area of ADB is ...

  A = 1/2bh

  A = 1/2(DB)(1/2AC) = 1/4(DB)(AC)

The area of the kite is twice this value:

  A = 1/2(DB)(AC)

__

In order to use the formula derived in part 1, we need to know the length of BE. That can be found using the Pythagorean theorem:

  BE² +AE² = AB²

We know that AE = 1/2AC, so the desired dimension is ...

  BE = √(AB² -(1/4)AC²)

Then the area of the kite is ...

  area = 1/2(DB)(AC)

  area = (1/2)(AC)(ED +√(AB² -(1/4)AC²)

__

Given three sides of a triangle, the area of it can be found using Heron's formula. If you have not yet seen that in your geometry class, you can always use the Pythagorean theorem and some algebra.

As before, we need to know the lengths of the diagonals. One is given. The other can be found considering the Pythagorean relations:

  AD² = AE² +DE²

  AB² = AE² +BE²

  BE +DE = BD . . . . the sum of the horizontal diagonal lengths

Subtracting the second equation from the first gives ...

  AD² -AB² = DE² -BE²

Using the third to write an expression for DE, we get an equation for BE:

  AD² -AB² = (BD -BE)² -BE²

  AD² -AB² = BD² -2BD·BE +BE² -BE²

  (AB² +BD² -AD²)/(2BD) = BE

Substituting this into the original second equation, we can find AE, hence the area of the kite.

  AE² = AB² -((AB² +BD² -AD²)/(2BD))²

Which means the kite area is ...

  area = BD·AE = BD√(AB² -((AB² +BD² -AD²)/(2BD))²)

  area = (1/2)√(4·AB²·BD² -(AB² +BD² -AD²)²

This area formula demonstrates it is possible to find the area of the kite given the three lengths AB, BD, DA.

_____

Additional comment

We have no doubt that the area formula of Part 3 can be rearranged to match Heron's formula. Here, we're interested in demonstrating area can be found.

Answer:

the value of h is 16

Answer:

There are 102 students in each period.

Step-by-step explanation:

total capacity =1550l

water drained rate= 28%

amt of water drained =28% of 1550 =434l

now,

water left the tank =1550l-434l =1116l