Explain and help me with these pls and tyty ( solving using the substitution method )

Explain And Help Me With These Pls And Tyty ( Solving Using The Substitution Method )

Answers

Answer 1

Answer:

I suck at math but take a picture and put it in the app called "Math-way" or "Photo-math" I'm a senior and still use these


Related Questions

The mass of the moon is 7.343 × 10^19 tonnes. The Earth has a mass of 81 times bigger than that of the moon. Work out the mass of the Earth.

Answers

Answer:

= 7. 343 × 10^19 ×81

= 1.377 × 10^21

Please help i have exam tom. ​

Answers

Answer:

Step-by-step explanation:

this is a simultaneous equation question

f(1)=8  so  a(1) + b = 8

f(4)=17 so a(4) + b = 17

can you figure this out from here ???

if you can't below is how to solve it

|

|

|

|

|

|

|

|

|

|

|

a + b = 8

4a+b=17

multiply the top equation by 4 and then subtract the bottom one from the top

4a+4b = 32

-(4a +b = 17)

3b = 15

b=5

now plug 5 into the first equation

a + 5 = 8

a=3

there you go :)

This afternoon Zoe left school, rode the bus 11/12 of a mile, and then walked 1/12 of a mile to get home. How much farther did Zoe ride than walk?

Write your answer as a fraction or as a whole or mixed number.

Answers

Answer:

Zoe rode [tex]\frac{5}{6}[/tex] of a mile more than she walked.

Step-by-step explanation:

[tex]\frac{11}{12}-\frac{1}{12} =\frac{5}{6}[/tex]

I need help please, Model 3: Another plan to secure

Answers

Answer: Cant see the photo

Step-by-step explanation:

I cannot really see the photo

B 2 -3 -2 -1 Use the Pythagorean theorem to find the distance between points A and B on each graph. round answers to the nearest tenth.​

Answers

hypotenuse= 9²

so the distance between the 2 points is 81

4²+5²=c²

factor out the square which gives (4+5)²=c²

which makes c=9

answer=81

Mr. Harris earns $12 per hour for 40 hours of work. He earns $18 per hour for hours worked over 40. How many hours did he work if he earned $642?

Answers

Answer:

$49 hours

Step-by-step explanation:

12*40=$480

642-480= $162

$162/18= 9 hours more than 40

40+9=49 hours

What is the measure of arc BC?
А
o
50°
25
E
C
D
pls help if u can:)

Answers

Answer:

arc BC = 100°

Step-by-step explanation:

The inscribed angle BEC is half the measure of its intercepted arc BC , then

arc BC = 2 × 50° = 100°

John is 20 years old than Steve. In 10 years, Steve's age will be half that of John's. What is the Steve age??

Answers

Answer:Steve age will be 15 y.o

Step-by-step explanation:

What is the value of x?



Enter your answer in the box.

Answers

x = 28, hope this helps

What is the 9th term in the geometric sequence?

Answers

Answer:

B

-1536

Step-by-step explanation:

Just replace n with 9

-6(2)^(9-1)

-6(2)^8

-6(256)

-1536

Someone help me?????

Answers

Answer:

A. y = | x - 6 | - 3

Step-by-step explanation:

Hope this is helpful

Answer:

D

Step-by-step explanation:

when you look at the graph you can notice a kind of a curve at that point x is -6 and Y is -3 so what u have to do is replace -6 in position of x in the 4 answers and the one who's Y = -3 is your answer

1.8 divided by 1,008 I have to have it by tomorrow please help ! And also I have to show all the work so please help me

Answers

Answer:

Step-by-step explanation:

1,008/1.8=10,080/18

18)10080(560

     90

    -

   ----------

      108

      108

     -

   ------------

           0

 ---------------

You buy a 1:10000 scale model of the One World Trade Center during a trip to New York City. The height of the model is 5.41 centimeters. Find the actual height x (in meters) of the One World Trade Center.

Answers

Answer:

541m

Step-by-step explanation:

The scale given 1 represents the height of the model and 10000 represents the actual height,place the 5.41 in line with the one and an unknown letter in line with the 10000 inorder to calculate the actual height

1:10000

5.41:x

cross multiply and solve for x,which will be 54100cm

but since the answer has to be in meters convert the 54100cm to a meter by dividing it by 100..

If a polynomial function f(x) has roots -9 and 7-i, what must be a factor of f(x)
(x-(7+i))
(x-(-7-i))
(x+(7+i))
(x+(7-i))

Answers

Answer:

f(x) = [x-(7-2i)][x-(7+2i)]

= [(x-7)+2i][(x-7)-2i]

= (x-7)2 - (2i)2

= x2 - 14x + 49 - 4i2 = x2 - 14x + 49 +4

= x2 - 14x + 53

Answer:

[tex](x-(7-i))[/tex]

Step-by-step explanation:

For a polynomial with roots [tex]a[/tex] and [tex]b[/tex], the polynomial [tex]f(x)[/tex] can be written in factored form [tex](x-a)(x-b)[/tex]. That way, when you plug in any of the roots, [tex]f(x)[/tex] returns zero.

Since the polynomial has at least two roots-9 and 7-i, two of its factors must then be:

[tex](x-(-9)\implies (x+9)\\(x-(7-i))\impli[/tex]

Therefore, the desired answer is [tex]\boxed{(x-(7-i))}[/tex]

Find the antiderivative of the function. f(x)=10x+3

Answers

An antiderivative of a function is also known as integral of function. We are being ask to integrate the following function.

[tex]\int f(x)dx=\int 10x+3dx[/tex]

This function is relatively easy to integrate because its just a sum of terms with various exponents.

[tex]\int 10x+3dx=5x^2+3x+C[/tex]

To check, you can perform derivative on the function you got from antideriving. If it equals to the original function, then antiderivation procedure was done correctly.

[tex]\frac{d}{dx}5x^2+3x+C=10x+3=f(x)[/tex].

Et voilà.

Hope this helps.

a^2-2(a+b)-b^2. plzz help plzz solve this factorization plzzzzzz​

Answers

[tex]\displaystyle\bf \star a^2-b^2=(a-b)(a+b)\star\\\\ a^2-2(a+b)-b^2=a^2-b^2-2(a+b)=\\\\\underline{(a+b)}(a-b)-2\underline{(a+b)}=\boxed{(a+b)(a-b-2)}[/tex]

Answer:

Step-by-step explanation:

a² -2(a+b) - b² = a² - 2a - 2b -b²

                       = a² - b² - 2a - 2b

                       = (a+b)(a-b) - 2 (a+b)

                      = (a+b)(a - b - 2)

 

Iliana rotated trapezoid WXYZ 180° about the origin.

On a coordinate plane, trapezoid W X Y Z has points (negative 4, 2), (negative 3, 4), (negative 1, 4), (0, 2).

What is the correct set of image points for trapezoid W’X’Y’Z’?

W’(4, –2), X’(3, –4), Y’(1, –4), Z’(0, –2)
W’(4, 2), X’(3, 4), Y’(1, 4), Z’(0, 2)
W’(–2, –4), X’(–4, –3), Y’(–4, –1), Z’(–2, 0)
W’(2, 4), X’(4, 3), Y’(4, 1), Z’(2, 0)

Answers

Answer:

W'(4, -2), X'(3, -4), Y'(1, -4), Z'(0, -2)

Step-by-step explanation:

The vertices of the trapezoid WXYZ are, W(-4, 2), X(-3, 4), Y(-1, 4), and Z(0, 2)

The coordinates of the image following the rotation transformation of the preimage (x, y) 180° about the origin is (-x, -y)

Therefore, following the rotation transformation of trapezoid WXYZ, the coordinates of the image W'X'Y'Z' are given as follows;

W(-4, 2) rotated 180° about the origin gives W'(4, -2)

X(-3, 4) rotated 180° about the origin gives X'(3, -4)

Y(-1, 4) rotated 180° about the origin gives Y'(1, -4)

Z(0, 2) rotated 180° about the origin gives Z'(0, -2)

Therefore, we get;

W'(4, -2), X'(3, -4), Y'(1, -4), Z'(0, -2).

Answer:

Its A

Step-by-step explanation:

i just took the test.

Chứng minh a=(P.sinA/2)/(cosB/2.cosC/2)

Answers

Answer:

I can't understand your question friend.

Help please!! 1. Solve the system of equations.
x + 5y = 3
3x - 2y = 6

Answers

Answer:

x = 9/2     y = 0

Step-by-step explanation:

2/3x + 5y = 3            5y = -2/3x + 3                y = -2/15x + 3/5

4/3x - 2(-2/15x + 3/5) = 6

4/3x + 4/15x - 6/5 = 6

8/5x - 6/5 = 6

8/5x = 36/5

x = 9/2

2/3(9/2) + 5y = 3

3 + 5y = 3

5y = 0

y = 0

Tess rolls 2 fair dice.
What is the probability of obtaining two 4's?

Answers

Answer:

1/36

Step-by-step explanation:

Since Tess rolled 2 different dices, there are 36 different possibilities. Rolling two 4's is 1 of them.

Therefore, the probability of Tess rolling 2 fair dice is 1/36

Hope this helped have a great rest of your day!

Answer:

1 out of 36 chance because add what a dice equals to then divide

what is 1/4 of the H.C.F of 24,16,48​

Answers

Answer:

2

Step-by-step explanation:

What is 1/4 of the H.C.F of 24,16,48​

Your answer

GIven data

24,16,48​

let us find the HCF of the above numbers

24=2*2*2*3

16= 2*2*2*2

48=2*2*2*2*3

Hence the HCF is 2*2*2= 8

Let us find 1/4 of the HCF

=1/4*8= 2

Hence the final answer is 2

Find the product. (Do not use spaces in your answer.)

d j · d k

Answers

Answer:

[tex]\displaystyle d^{j + k}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right

Algebra I

Exponential Rule [Multiplying]: [tex]\displaystyle b^m \cdot b^n = b^{m + n}[/tex]

Step-by-step explanation:

Step 1: Define

Identify

[tex]\displaystyle d^j \cdot d^k[/tex]

Step 2: Find

Multiply [Exponential Rule - Multiplying]:                                                         [tex]\displaystyle d^j \cdot d^k = d^{j + k}[/tex]

Answer:

[tex]\huge\boxed{d^j\cdot d^k=d^{j+k}}[/tex]

Step-by-step explanation:

Use the theorem:

[tex]a^n\cdot a^m=a^{n+m}[/tex]

Why? Look at this example:

[tex]2^3\cdot2^4=\underbrace{2\cdot2\cdot2}_{3}\cdot\underbrace{2\cdot2\cdot2\cdot2}_4=\underbrace{2\cdot2\cdot2\cdot2\cdot2\cdot2\cdot2}_{7}=2^7[/tex]

Therefore

[tex]d^j\cdot d^k=d^{j+k}[/tex]

An airplane 30,000 feet above the ground begins descending at the rate of 2000 feet per minute. Assume the plane continues at the same rate of descent. How long will it take the plane to reach 12,000 feet above the ground

Answers

Answer:

Step-by-step explanation:

Let the time taken to reach 12,000 feet = x

Distance traveled in 1 minute = 2000 ft

Distance traveled in 'x' minute = 2000 * x = 2000x

30,000 - 2000x = 12000

Add 2000x to both sides

30,000 = 12000 + 2000x

Now subtract 12,000 from both sides

30000 - 12 000 = 2000x

2000x =  18 000

Divide both sides  by 2000

x = 18000/2000

x = 9 minutes

1. Slope and the properties of perpendicular and parallel can be used to confirm that a polygon is a specific type of
quadrilateral.

What types of quadrilaterals can you determine by using these properties? List at least two types of quadrilaterals.

2. Choose one type of quadrilateral from your answer to Question 1. Explain in complete sentences how you can use
properties of perpendicular and parallel lines, together with slope, to confirm that a given polygon is the type of
quadrilateral you chose. Be sure to clearly state the properties that you need to use.

Please number your responses to the questions as they are shown (1 and 2).
NOTE from Ms. Kliban:
I found this answer on the Internet. *If it were an original answer, below is how I would grade it and why

1. The two would be rectangle and trapezium

2. You can determine with the properties that are given, that it's a polygon because with the slope already known that gives
a in to see which lines are perpendicular to which lines and which aren't. Also, with the properties you can tell if everything
Is parallel lines with the slope formula. Some slopes might be different but doesn't mean the polygon Isn't perpendicular
because two sides can have the same slope and the other two won't

GRADE: First off, in the United States, we don't use the word "trapezlum."
For part 2, it says, you can determine with the properties that are given." What properties? There are no properties given.
There are shapes. The next thing said in part 2 is that the slope is already known. No, it's not. You have to find the slope.
PLEASE HELP!!!!! 70 points !!!!

The grammar is bumpy. In other words, I stumbled over it when I tried to read it.
In order to do well on this assignment, part one only needs to have two quadrilaterals stated. You don't even have to have it
In a sentence.
For part 2. you do need to use complete sentences. You need to explain how to find slope and why you need to find the
slope. Then also explain how parallel and perpendicular lines help you to make sure you have the shape you stated in part
sat

Answers

Answer: Rectangle and Trapezium

Step-by-step explanation:

If you have the slopes, then you can tell when two lines are parallel.

A rectangle has two pairs of parallel sides

A trapezium has exactly one pair of parallel sides

1.

We can determine whether a quadrilateral is a rectangle or a trapezium using the slope and the properties of parallel and perpendicular lines.

2. How are the slopes of perpendicular sides related?

Product of the slopes of perpendicular lines = -1.

M₁ * M₂ = -1 .

How are the slopes of parallel sides related?

Slopes of parallel lines are equal.

M₁ = M₂.

How do we determine a rectangle?

Suppose we have a quadrilateral ABCD.

AB and CD are one pair of opposite sides.

BC and DA are another pair of opposite sides.

AB is adjacent to BC. BC is adjacent to CD. CD is adjacent to DA. DA is adjacent to AB.

Slope AB = M₁

Slope BC = M₂

Slope CD = M₃

Slope DA = M₄

For ABCD to be a rectangle, by properties opposite sides need to be parallel and adjacent sides need to be perpendicular.

∴ If M₁ = M₃, M₂ = M₄ (for opposite sides to be parallel)

and if M₁.M₂ = -1, M₂.M₃ = -1, M₃.M₄ = -1, and M₄.M₁ = -1 (for adjacent sides to be perpendicular) then the given quadrilateral ABCD is a rectangle.

Learn more about quadrilaterals, the slope of parallel lines, and the slope of perpendicular lines at

https://brainly.com/question/23935806

https://brainly.com/question/26172639

https://brainly.com/question/1362601

#SPJ2

Can someone help me with this math homework please!

Answers

Answer:

1st, 2nd and 6th options

Step-by-step explanation:

Given

[tex]\frac{2}{3}[/tex] - x + [tex]\frac{1}{6}[/tex] = 6x ( multiply through by 6 to clear the fractions )

4 - 6x + 1 = 36x ← option 1 will have the same solution set

----------------------------------------------------------------------

Adding the 2 fractions on the left side gives

[tex]\frac{4}{6}[/tex] +[tex]\frac{1}{6}[/tex] - x = 6x , that is

[tex]\frac{5}{6}[/tex] - x = 6x ← option 2 will have the same solution set

------------------------------------------------------------------------

From

4 - 6x + 1 = 36x ( add 6x to both sides )

5 = 42x ← option 6 will have the same solution set

Review your answers to Question 4. What happens to the coordinates of a shape when the shape reflects about the line y = x? Explain.

Answers

Answer:

The x and y coordinates swap position

Step-by-step explanation:

Given

Reflection across: [tex]y = x[/tex]

Required

What happens to the coordinate

When a point is reflected about [tex]y = x[/tex], the x and y coordinates swap position

i.e.

[tex](x,y) \to (y,x)[/tex]

Answer:

When the shape reflects about the line y = x, the x-coordinate and the y-coordinate of each point are swapped.

Step-by-step explanation:

i need help asap like right now!!! MWEN BEZWEN ÈD AK MATEMATIK MWEN AN. ​

Answers

Answer:

i guess it is "not enough information"

help me please!!!!!!!!

Answers

Try using the Butterfly method

Answer:

1/2

Step-by-step explanation:

y = 2 3 x − 5 y = −2x + 3 On a coordinate plane, 2 lines intersect at (negative 3, negative 3). She determined that the solution is (–3, –3). Is she correct? If not, explain why.

Answers

Given:

The two equations are:

[tex]y=\dfrac{2}{3}x-5[/tex]

[tex]y=-2x+3[/tex]

To find:

Whether (-3,-3) is a solution of the given equation or not.

Solution:

Table of values for [tex]y=\dfrac{2}{3}x-5[/tex],

x         y

0        -5

7.5      0

Plot the points (0,-5) and (7.5,0) on a coordinate plane and connect them by a straight line.

Table of values for [tex]y=-2x+3[/tex],

x         y

0        3

1.5      0

Plot the points (0,3) and (1.5,0) on a coordinate plane and connect them by a straight line.

From the below graph, it is clear that the graphs of both lines intersect each other at (3,-3). So, the solution of given equations is (3,-3) instead of (-3,-3).

Therefore, she is incorrect because the correct solution is (3,-3).

Dairy cows at large commercial farms often receive injections of bST (Bovine Somatotropin), a hormone used to spur milk production. Bauman et al. (Journal of Dairy Science, 1989) reported that 12 cows given bST produced an average of 28.0 kg/d of milk. Assume that the standart deviation of milk production is 2.25 kg/d. (a) Find a 99% confidence interval for the true mean milk production. Round your answers to two decimal places (e.g. 98.76).

Answers

Answer:

The 99% confidence interval for the true mean milk production is between 26.33 kg/d and 29.67 kg/d.

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.99}{2} = 0.005[/tex]

Now, we have to find z in the Z-table as such z has a p-value of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.005 = 0.995[/tex], so Z = 2.575.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

[tex]M = 2.575\frac{2.25}{\sqrt{12}} = 1.67[/tex]

The lower end of the interval is the sample mean subtracted by M. So it is 28 - 1.67 = 26.33 kg/d.

The upper end of the interval is the sample mean added to M. So it is 28 + 1.67 = 29.67 kg/d.

The 99% confidence interval for the true mean milk production is between 26.33 kg/d and 29.67 kg/d.

Other Questions
If a and b are parallel and c and d are parallel, which pair of angles are congruent?A. 1 and 16B. 5 and 8C. 9 and 11D. 12 and 13 Examples of a/an _______ observation are 37 m, 9.37 s, and 100 mph. Bees mainly eat the nectar of flowers and in the process get pollen all over their leg hairs, which gets carried to the next flower, pollinating them. This is an example of ___________.A. ConditioningB. Predator-preyC. MutualismD. Parasitism You measure 49 turtles' weights, and find they have a mean weight of 80 ounces. Assume the population standard deviation is 6.1 ounces. Based on this, construct a 99% confidence interval for the true population mean turtle weight. Round your answers to 2 decimal places. You read about a proposed amendment to require all students to remain in high school until they are able to pass all required courses. You argue that it will not become an amendment. Based on Amendments 11 to 27. why would you argue that it will NOT become an amendment? . It will not pass because amendments only change voting rights and taxes. B It will not pass because amendments only affect people over 18 years old It will not pass because most proposed amendments do not pass D. It will not pass because proposing amendments is no longer allowed What was the response of the world's nations to the Great Depression? Please explain the answer Based on the information in the graph, what is the best conclusion to drawabout Africa?World Population Growth20,00010,000World5,000Asia2,000Africa1,000EuropeWANIA500200100United States,Canada, and GreenlandMexico,Central America, Caribbean Islands,and South AmericaOceania (Australia andnearby islands in the Pacific)502010195019601970A. The fertility rate is very low.19801990200020102020203020402050B. It has reached its carrying capacity.C. The birthrate is higher than the death rate.ocD. It has few resources. Which type of rainfall is regularly found in the mountainous Northwestern US?A. Conventional rainB. Occluded rainC. Frontal rainD. Relief rain Use differentials to estimate the amount of paint needed to apply a coat of paint 0.07 cm thick to a hemispherical dome with diameter 50 m. (Round your answer to two decimal places.) Hey. I just need some advice. So I suck at math right like I dont know anything, or I should say I dont remember anything! So a little bit over the summer I have been doing Khan acadamey and what not. But I still cant seem to do anything right! So school here starts september 1st and Im gonna be a freshman in highschool. What do I do!!! Rewrite the following sentence;A. I am not interested in football. My brother is also not interested in football.B. Neither........ Question 8 If f (2) = (1 + 3) and g (2) VO+ 7, find g (f (x)). 9(f()) = 1 + 10 O g(f ()) = VI + 3 +7 Og(f (x)) = v= + 10 Og(f (2)) = 2? + 10 Unearned Revenue: The company collected $24,000 rent in advance on September 1,debiting Cash and crediting Unearned Rent Revenue. The tenant was paying 12months' rent in advance and occupancy began September 1. Answer the four questionsbelow as of 12/31. Whenever you see the word "unearned," it always indicates a liabilityaccount. Most liability accounts include the word "payable," as those liabilities will bepaid back. An unearned account is a liability that will be worked off, rather than paidoff.1. The beginning balance of Unearned Revenue: (5 pts) 8 X. Alex is writing an email to Mai to introduce some of the places of interest in his hometown, Newquay. Use the words/ phrases given to complete his email. Add more words, if necessary o Newquay : small town/ Atlantic coast/ south/England// 1st suggestionsurfing/ Fistral Beach//. One/ best place/ surf/UK/1. Some good surf school/learn/ surf//. Surfing friend/ every weekend/l. If like water sports : kayaking/ water-skiing/coasteeing/I. Coasteegin/ different/ because it/ rock climbing/jumping/sea/ swimming/ same activity/l. Sound/ dangerous/ not worryl as/ always/ go/ special instructor//. If/ like/ animals : visit Blue Reef Aquarium/ see/ different fish/even shark//. Can/ horse riding / or/ visit/ Newquay Zooll. Frances bought a new dress that was discounted by 24%. she used the following expressions to find the price of the dress after the discount was applied What are the hallmarks of Abstract Expressionism? Find the slope of the lineSlope=m=_______ what should I do?in the picture What do you understand by moment of inertia and torque?Word limit 50-60Please don't copy from any sources. You can rewrite. Plagiarism will be check. Thank you.