Hello please help me through 11-13 .

Hello Please Help Me Through 11-13 .

Answers

Answer 1

Answer:

Step-by-step explanation:

Points to remember while solving a system of linear equations,

1). If the equations have same slope, solution of the system will have no solution.

2). If both the equations are same, system will have infinitely many solutions.

3). If both the equations have different coefficients of variables, system of equations will have exactly one solution.

Question 11,

ax + 4y = 10 ------ (1)

-9x - 6y = -15

-3x - 2y = -5

-6x - 4y = -10

6x + 4y = 10 -------(2)

For infinitely many solutions,

Coefficients of variables will be same.

a = 6 will be the answer.

Option B is the correct option.

Question 12,

[tex]y=-\frac{3}{2}x+4[/tex] ---------(1)

[tex]y=-\frac{3}{2}x-4[/tex] ----------(2)

Since, slopes of both the equations are same as [tex]-\frac{3}{2}[/tex], lines will be parallel.

System will have NO SOLUTION.

Question 13,

x + 3y = 6 ------- (1)

6x + 18y = 36

x + 3y = 6 -------- (2)

Both the equations are same.

Therefore, system of the equations will have infinitely many solutions.

2x - 3y = -3 ------(1)

4x + 6y = 18

2x + 3y = 9 -------(2)

Coefficients of the variables are different, therefore, one solution.

3x + 2y = 6 -------(1)

6x - 4y = 24

3x - 2y = 12 -------(2)

One solution.

8x - 10y = 6

4x - 5y = 3 -------(1)

-4x + 5y = 3

4x - 5y = -3 ------(2)

One solution.

4x + 10y = 16

2x + 5y = 8 --------(1)

10x + 25y = 40

2x + 5y = 8 --------(2)

Infinitely many solutions.


Related Questions

(1,10), (18.-10) slope

Answers

Answer:

I think the slope is -20/17 hope this helps

Jenny's kite has gotten stuck at the top of a tree. If the kite's string is 40 feet long and Jenny is 24 feet away from the tree, about how much taller is the tree than Jenny? (Round to the nearest foot.)

Answers

Um, 16 I guess, I'm not sure

Pierce swims ina pool in 8 minutes. He spent the same amount of time on each lap. How much time did each lap take him?​

Answers

Answer:

B

Step-by-step explanation:

I think

In Steven's grade, 12 students are enrolled in health and 48 students are not. What percentage of the students in the school are enrolled in health?​

Answers

Answer:

20%

step-by-step way

Select all quadrilaterals that have 180 degree rotational symmetry,
A. trapezoid
B. isosceles tapezoid
parallelogram
D. rhombus
E. rectangle
F. square

Answers

Your answer would be Trapezoid isoscleses trapezoid, rhombus. I think. Hope this helps?!

Parallelogram and Rectangle has rotational symmetry of 180 degree.

Trapezoid has rotational symmetry = 360 degree.

Isosceles Trapezoid has rotational symmetry = 360 degree.

Parallelogram has rotational symmetry = 180 degree.

Rhombus has rotational symmetry = 90 degree.

Rectangle has rotational symmetry = 180 degree.

Square has rotational symmetry = 90 degree.

Learn more: https://brainly.com/question/20969283

On average, 3 percent of U.S. travelers do not show up for their flight. Suppose this probability is independent and constant across travelers. For a given flight from Seattle to San Francisco, an airline accepted a total of 103 reservations while the plane capacity is 100 seats. What is the probability that the airline will have to bump at least one passenger

Answers

Answer:

.3988 .

Step-by-step explanation:

We shall use Binomial distribution formula in the problem .

n = 103

The probability that a passenger will not miss the flight and show up = .97

The probability that a passenger will miss the flight = .03

n = 103 ,

probability of showing up  101 , 102 and 103 passengers so that at least 1 passenger will return or bump .

= 103C₁₀₁ .97¹⁰¹ .03² + 103C₁₀₂ .97¹⁰² .03+ 103C₁₀₃ .97¹⁰³

103 x 102 /2  .97¹⁰¹ .03² + 103  .97¹⁰² .03 + .97¹⁰³

= 5253 x .046 x .0009 + 103 x .00134 + .0434

= .2174 + .1380 + .0434

= .3988 .

The probability that the airline will have to bump at least one passenger is; 0.3988

Binomial probability distribution

Probability that the travelers did not show up for the flight is; q = 3% = 0.03

Probability that they will show up for the flight is; p = 97% = 0.97

The formula for binomial probability is;

P(X = r) = nCr × p^(r) × q^(n - r)

Thus, the probability that the airline will have to bump at least one passenger is;

(103C₁₀₁ × 0.97¹⁰¹ × 0.03²) + (103C₁₀₂ × 97¹⁰² × 0.03) + (103C₁₀₃ × 0.97¹⁰³ × 0.03⁰)

>> 0.2174 + 0.1380 + 0.0434

>> 0.3988

Read more on binomial probability at; https://brainly.com/question/15246027

I will give brainiest to whoever answers correctly !!

Answers

50.31 % I did this a year ago and got it right. Hope it helps tho

3. Graph the quadrilateral with the given vertices. Give the most descriptive name for the polygon. F(1,2). G(3,0), H(1,-2).

Answers

Answer:

Expand on the name.......

The quotient of 3 times a number n and 6 is 8. What is the value of n?

A.
24

B.
48

C.
4

D.
16

Answers

Answer:

d

Step-by-step explanation:

which expression has the least value when x = 100

A. 1/x
B. 10/x
C. 1-x
D. 10-x​

Answers

Answer:

C. 1-x

Step-by-step explanation:

Negatives are alwys less than positives meaning a&b are out and 1-100 is -99 and 10-100 is -90 meaning that C is your answer

Given the function g(x)=41x^3+a for some constant a, which describes the inverse function g^-1(x)

Answers

Answer:

[tex]g^{-1}(x)=\sqrt[3]{\frac{x-a}{41}}[/tex]

Step-by-step explanation:

The inverse of a function has [tex]x[/tex] and [tex]y[/tex] values switched from the original function. Therefore, simply switch [tex]x[/tex] and [tex]y[/tex] and isolate [tex]y[/tex] to get your inverse function:

Original function: [tex]g(x)=41x^3+a[/tex]

Switching [tex]x[/tex] and [tex]y[/tex], then isolating [tex]y[/tex]:

[tex]x=41y^3+a,\\x-a=41y^3,\\\frac{x-a}{41}=y^3,\\y=\sqrt[3]{\frac{x-a}{41}}[/tex].

Therefore, the inverse of the [tex]g(x)=41x^3+a[/tex] is:

[tex]\fbox{$g^{-1}(x)=\sqrt[3]{\frac{x-a}{41}}$}[/tex].

WILL GIVE BRAINLIEST FOR ANSWER I’m gonna fail help please

Answers

Answer: A

Step-by-step explanation:

might as well tell ur teachers ur awesome no matter wat.

What is the result when the number 52 is decreased by 50%?​

Answers

Answer: You get 26, If this wasn't what you were looking for let me know! :)

Step-by-step explanation:

Use the distributive property to remove the parentheses.
-4(-6y + 2w-4)

Answers

Answer: 24y - 8w + 16

Step-by-step explanation:

Basically to remove the parenthesis you just distribute the -4 outside of the parenthesi and you get 24y - 8w + 16.

Please Help!



B belongs to AC D belongs to lineAF

Answers

Answer:

x = 27

Step-by-step explanation:

∠ CAD and ∠ EDF are corresponding angles and are congruent, so

∠ CAD = 2x

The sum of the 3 angles in Δ ABD = 180°

sum the angles and equate to 180

72 + 2x + 2x = 180

72 + 4x = 180 ( subtract 72 from both sides )

4x = 108 ( divide both sides by 4 )

x = 27

Andy and Jim are going to compete in the 100-meter dash against each other. Let AAA be the time it takes Andy to complete the race, and JJJ be the time it takes Jim to complete the race. Based on previous results, they know that \mu_A=11.5μ A ​ =11.5mu, start subscript, A, end subscript, equals, 11, point, 5 seconds and \sigma_A=1σ A ​ =1sigma, start subscript, A, end subscript, equals, 1 second. They also know that \mu_J=10.5μ J ​ =10.5mu, start subscript, J, end subscript, equals, 10, point, 5 seconds and \sigma_J=0.5σ J ​ =0.5sigma, start subscript, J, end subscript, equals, 0, point, 5 seconds.

Answers

Answer:

μd= 1 second

σd= square root (1.25) = √1.25 seconds= 1.1180 seconds

Step-by-step explanation:

Assume that their times are independent. Let DDD be the difference between their times in a random 100-meter dash (D=A-J)(D=A−J)left parenthesis, D, equals, A, minus, J, right parenthesis.

Find the standard deviation of DD

The mean difference is found out by subtracting the individual means.

The mean difference = μd= μA- μJ= 11.5- 10.5= 1 second

The difference standard deviation is given by the square root of sum of the individual variances divided by n. But here n1= n2= 1

σd = sqrt( σ1² / n1 + σ2 ²/ n2 )

First we calculate the variances.

Variance is the square of the standard deviation.

The variance of Andy =σA²= 1²= 1

The variance of Jim =σJ²= (0.5)²= 0.25

The standard deviation difference= σd= √σ²A+ σ²J/1= √1+ 0.25/1= √1.25/1 = √1.25 seconds = 1.1180 seconds

How does the structure of a leaf enable photosynthesis to take place?
PLEASE HELP I KNOW THIS IS NOT FOR MATH BUT I DID NOT FIND SCIENCE :(

Answers

Answer:

Leaves are adapted for photosynthesis and gaseous exchange. They are adapted for photosynthesis by having a large surface area, and contain openings, called stomata to allow carbon dioxide into the leaf and oxygen out. ... The cells inside the leaf have water on their surface.

Help me please! I am in desperate need

Answers

Answer:

C. The coefficients of [tex]x^ay^b[/tex] and [tex]x^by^a[/tex] are equal.

Step-by-step explanation:

The binomial theorem is given as:

[tex](x+y)^n=\sum_{k=0}^{n} \binom{n}{k}x^{n-k}y^k[/tex]

[tex]n-k+k=n[/tex], and the coefficient of these terms are represented by [tex]\binom{n}{k}[/tex].

*Note [tex]\binom{n}{k}=\binom{n}{n-k}=\frac{n!}{k!(n-k)!}[/tex]

Therefore the coefficients of [tex]x^ay^b[/tex] and [tex]x^by^a[/tex] are equal.

pls help, you have to write in fraction form.​

Answers

91/1, answer is 91

522% of 175 is 91

Answer:

42/145

Step-by-step explanation:

i tried might be wrong

EMERGENCY HELP PLEASE

Answers

Answer:

blue= x

pink=2x

green= 4x

orange=8

=

7x+8

Step-by-step explanation:

Help will give brainly and thanks
I have 5 mins

Answers

Answer:

no

Step-by-step explanation:

rewrite 1/3 Barrel 2/3 hour as a unit rate
A. 4 1/2 Barrels/Hour
B. 2 barrels/hour
C. 2/9 barrel/hour
D. 1/2 barrel/hour

Answers

Answer:

c is correct answer is yes

Answer:

D. 1/2 barrel/hour

Step-by-step explanation:

1. How could you find the actual number of sticky notes it will take to cover the cabinet, excluding the bottom? What information would you need to know?​

Answers

Hey there!

You would probably need to know the dimensions and surface area of the cabinet, and the dimensions and area of the sticky notes.

Hope it helps and have an amazing day!

A soccer team has 12 girls and 18 boys. The team is split into groups that have the same ratio of girls to boys as that of the whole team. How many girls are in the group that has nine boys? A) 9b to 6g (B 9b to 12g (C 9b to 3g

Answers

Answer:

A. 9boys to 6girls

Step-by-step explanation:

If the original ratio of boys to girsl was 18 boys to 12 girls, then the simplified ratio is 3 boys to every 2 girls.

3:2

9:?

Divide 9/3=3

So the simplified ratio times 3 would give you the ratio if boys to girls when there are 9 boys

2*3=6

6 girls when there are 9 boys

An expression is evaluated as shown below.



8 + 3 × (4 ÷ 2) − 7



Step 1: 8 + 3 × 2 − 7

Step 2: 11 × 2 − 7

Step 3: 22 − 7

Step 4: 15



In which step does a mistake first appear?

Answers

Answer:

Step 2: 11 × 2 - 7

Step-by-step explanation:

unzsun sun dn I'd i

Simplify:
з (2(3) + (4 — 2)(3) - (6 – 2)(2)]
A. 3
В. 12
С. 0
D. 24
E. -3

Answers

Answer:

the answer is 4

Step-by-step explanation:

none of the options are right

What is the probability of picking one blue marble out of a bag containing 4 red, 5
blue, and 1 yellow marble?

Answers

Answer: 50:50

Step-by-step explanation:

The supply and demand for vintage vinyl records are shown. Where is the equilibrium point.

Answers

Answer:

The point where the demand curve and the supply curve meets

Step-by-step explanation:

The equilibrium point is the point at which the quantity of vintage vinyl supplied and the quantity demanded is equal at a particular price.

From the graph, the equilibrium point is the point at which the demand curve and the supply curve intersects.

So, the equilibrium point if vintage vinyl is at the point somewhere between the price of 20 and 30, and the point where the quantity is somewhere between 50 and 100.

Answer:

at the intersection of the 2 lines at that dot that is on both lines

Step-by-step explanation:

What is the linear inequality of the graph shown?​

Answers

Answer:

Tough to tell by just the straight graph, but the inequality will be > or < due to the dashed line

Answer:

y>4x-2

Step-by-step explanation:

Find the slope, which is 4, from (0,-2) and (1,2).

Find the y-intercept, which is -2, because it touches the y-axis at (0,-2).

We know the equation would be a greater/less than sign because the line is dashed.

To find out which sign it is, just substitute a random point from the shaded area. (I like to use (0,0)).

(0)<4(0)-2       (0)>4(0)-2

0<0-2              0>0-2

0<-2                0>-2

The one on the right, 0>-2, is true so the sign is a greater than sign.

Find the domain and range. Graph the relation and determine whether it is a function or not
{(0,0)(1,-1),(2,-4),(3,-9),(4,-16)}
please help im about to fail math

Answers

The domain is the set of all x-coordinates and

the range is the set of all y-coordinates.

So the domain for this relation is {0, 1, 2, 3, 4}

and the range is {0, -1, -4, -9, -16}.

Now, I graph these points below.

For the relation tobe a function, it must pass the vertical line test.

If we can draw a vertical line that passes through only one point

anywhere on the graph, the relation is a function.

Notice that if you were to draw a vertical line,

no line would intersect two points on the same line.

Other Questions
Solve the expressions when a = 9 and b = -3. Enter your answers in the boxes below. A. -3b =B. a/b + a =PLEASE HELP ME 2(-2-8)+4=2(1+3) someone pls help Can I please get some help Trace how blood flows through the circulatory system In a juggling competition, 7/ 20 of all the jugglers use balls only, 3/ 7 of all the jugglers use rings only, and the rest of jugglers use both balls and rings. If there are less than 200 jugglers in the competition, how many jugglers use both balls and rings? Sam bought a kite that he could do stunts with for $52. If hepaid $4.42 in sales tax, what was the sales tax rate? THIS IS NOT AN ACADEMIC QUESTION, but who was the bitter of 1987 in FNAF?A: FREDDY FAZBEAR B: FOXYC: MANGLED: GOLDEN FREDDY Slove for N will give brainliest When did early humans begin to use bows and arrows for hunting? A. the Historic Age B. the Paleolithic Age (Old Stone Age) C. the Mesolithic Age D. the Neolithic Age (New Stone Age) Plzzzzzzzzzz help me and dont lie Without specialization, how would a person have to satisfy his or her needs? And is not B so is either A or C A by doing it themselvesB by asking someone elseC by relying on teamwork what is an element of management activity in business? the main sailboat has the dimensions shown in figure at the right . what is the height of the main sail? You are buying plants and soil for your garden. The soil cost $4 per bag and the plants cost $10 each. You want to buy at least 5 plants and can spend no more than $100. Write a system of linear inequalities to model the situation. 6. PLS HELP ASP WILL GIVE BRAINLY AND EXTRA POINTS Which is true about the cultural landscapes of Greece and Japan?1 Greeks eat less fish than the Japanese because they dont have the necessary technology to fish.2 The Japanese chose to make full use of the mountains by carving terraces; the Greeks cleared mountain pastures for goats and sheep.3 Both Greece and Japan have learned to harvest seaweed to feed the wild goats that live on the mountainsides.4 Both Greece and Japan show similar geography, but the people have used their resources in different ways. Combine the like terms to create an equivalent expression:7p-(-5)+(-1) PLEASE HELP FASTdecide if the following systems of equations have a single solution no solution or infinity many solution x+ 5y =9 _ x+5y=6 Name the two main alliances that formed before World War I. what is the slope of the line(2,9) (3,7) The purpose of inverse trig functions is to identify the ____ that yield the given ____.A) trigonometry function, valueB) value, anglesC) trigonometry function, angleD) angle, value What type of reaction is shown here?C6H12O6 +1202 6CO2 +6H20Double replacementDecompositionO CombustionSynthesisSingle replacement