12y-28=14x and 0=10y+22+9x solve using substitution

Answers

Answer 1

Answer:-7/31

Step-by-step explanation:


Related Questions

Please help! image is shown below

Answers

Answer:

I think its 15

Step-by-step explanation:

25 + 25 = 50

So 15 + 15 = 30

What js the value of (x)?​

Answers

the value of x is x=8

A cell phone provider offers a plan that costs ​$40 per month plus ​$0.20 per text message sent or received. A comparable plan costs ​$70 per month but offers unlimited text messaging.

Answers

Answer:

For, 250 messages the plans cost the same. Under 250 messages, plan A is cheaper.

Step-by-step explanation:

Giving the following information:

Plan A:

Fixed costs= $40

Variable cost= $0.2

Plan B:

Fixed cost= $40

I assume that we have to determine the indifference point, where the two plans cost the same.

First, we need to establish the total cost equations

Plan A= 20 + 0.2x

Plan B= 70

x= number of messages

Now, we equal both formulas and isolate x:

20 + 0.2x = 70

0.2x= 50

x= 250

For, 250 messages the plans cost the same. Under 250 messages, plan A is cheaper.

Do you ever put too much pressure on yourself when you don’t accomplish your goals as quickly as you would have liked? 3 sentences please

Answers

answer:

yes, i have put too much pressure on myself when i was not able to accomplish my goal as quickly as i would have liked. some things in life don't always work out the way you want, but we have live through it. this happened to me when i kept on doing bad at a subject even when i kept practicing. it was frustrating at first, however i just kept going and now im pretty good at it.

step-by-step explanation:

there isn't any explanation to this, just my opinion

Answer:

Omg yes all the time

Step-by-step explanation:

And I hate myself for it I need to be more patient towards myself

A circle has a diameter of 12 inches. What is the area of the circle? А 367 inches squared B 247 inches squared C 127 inches squared D 67 inches squared​

Answers

Answer:

113.1

Step-by-step explanation:

A = πr²

A = π (6)²

A = π (36)

A = 113.09 = 113.1

What is the slope of the line? (Write your answer as a reduced fraction)

Answers

Answer:

m=-1/4

Step-by-step explanation:

(0,5)(4,4)

Marlene is making a bracelet at Camp using 1.9 cm beads. What is the length of her bracelet if she uses 18 beads pls help i need a step by step explanation
please help me i will give brainlist if i can

Answers

9514 1404 393

Answer:

  34.2 cm

Step-by-step explanation:

Hopefully, you understand that the length of 2 beads is 2 times the length of 1 bead. Extending this to 18 beads, we hope you understand that the length of 18 beads is 18 times the length of 1 bead.

The length of the 18-bead bracelet will be ...

  18×1.9 cm = 34.2 cm

The length of Marlene's bracelet is 34.2 cm.

_____

Maybe you've never been given as "step by step" for the problem solving process.

Step 1: Set aside your math anxiety and turn on your brain. (The number at the top of the answer is intended to help you do that.)

Step 2: Read the problem statement, interpreting it according to your experience in the real world and your knowledge of English words and sentence structure.

Step 3: Identify what the problem statement is telling you.

Step 4: Identify what the problem statement is asking you.

Step 5: Apply your knowledge of real-world relationships and math relationships to determine how the asked-for information is related to the given information.

Step 6: Use logical reasoning, and/or math symbols to write any down any relationships (equations or inequalities or diagrams) that need further manipulation to achieve the desired answer.

Step 7: Solve those equations, logic problems, geometry diagrams, whatever, using the math relationships you have learned.

Step 8: Relate the solution(s) you found to the question that is being asked. (This may require additional steps.) Note that this is what is being done in the bold statement at the end of the answer above.

A 2.4m piece of ribbon is to be divided into three equal lengths to go around some
presents. How long (m) will each piece of ribbon be? Convert your answer to cm.

Answers

Answer: 80 cm

Step-by-step explanation:

2.4 divided by 3 is 0.8

To convert m to cm multiply by 100

100 x 0.8 = 80

Answer:

Each piece of ribbon will be 80 cm or 0.8m

Step-by-step explanation:

Hope this helps!

How many terms are in this expression?
1 + 9 + 3u
Submit

Answers

Answer:

2

Step-by-step explanation:

When it comes to like terms, they have to end with the same symbol A.K.A variables, exponents, and numbers.

1 + 9 + 3u

There are two terms, constants and variables, constant being 1 and 9 while variable being 3u.

Express the ratio below in its simplest form.
9:9:3

Answers

Answer:3:3:1

Step-by-step explanation:divide by 3

pls help thank you!
choose the best answer
x^2=36

a) no real solutions

b) one distinct, real solutions

c) two distinct, real solutions

x^2-78=0

a) no real solutions

b) one distinct, real solutions

c) two distinct, real solutions

x^2-8x+16x=0

a) no real solutions

b) one distinct, real solutions

c) two distinct, real solutions

3x^2-6x=29

a) no real solutions

b) one distinct, real solutions

c) two distinct, real solutions

5x^2-4x+3=0

a) no real solutions

b) one distinct, real solutions

c) two distinct, real solutions

Answers

Answer:

two distinct real solutions

Answer:

the first one is b)

Step-by-step explanation:

the first one is B. bc x= 6 or x= -6

Solve the equation for x:
|5x - 61 = -10

Answers

Answer:

x=51/5

Step-by-step explanation:

Add 61 on both sides

You'll have 5x=51

So now 51/5 is your answer.

Answer:

16/5

Step-by-step explanation:

|5x - 6| = -10

5x -6 = 10

5x = 10+6 = 16

x = 16/5

For the rhombus above, find the value of x. (leave decimal answer in the
hundredths place)

Answers

Answer:

iliterallydontknowfigureitoutyourself

Answer:

x = 19.25

Step-by-step explanation:

The diagonal of a rhombus bisects opposite angles and opposite angles are congruent.  

So, 2x - 1 is the measure of the third angle of the triangle

Therefore, 2x - 1 + 2x - 1 + 4x + 28 = 180 since the sum of the measures of the angles of a triangle is 180

8x + 26 = 180

8x = 154

x = 19.25

GOOD ANSWERS PLEASE!! WILL GIVE BRAINLIEST!!

Consider the triangle below.
Determine the angle measure for the bottom two angles in order for the triangle to be classified as an isosceles triangle.

Answers

Answer:

angle 1= 30 degrees

angle 2= 120 degrees

angle 3= 30 degrees

Step-by-step explanation:

A triangle is equal to 180 degrees so first step is to subtract 120 to get the total of your two missing angles

180-120=60

and since your two missing angles are equal to each other you can divide by 2 and you get your two missing angles

60 / 2 = 30

Given the relation y = 3x^2 + 1, if the input is 4, what is the output?

Answers

Answer:

Step-by-step explanation:

y=3(4)²+1

 =48+1

 =49

Answer:

The output is 49

Step-by-step explanation:

If the input is 4, then x = 4.

Replace x with 4 and you have the equation:

3(4)^2 + 1 = 49

Because Y is the output, and Y = 49, the output is 49

What is 40% of 10?
I need to know this for a math question on khan academy

Answers

Answer:

4

Step-by-step explanation:

10/100=0.1

1% = 0.1

0.1*40= 4

what would 5x⁵-5x be​

Answers

Answer:

5x^4

Step-by-step explanation:

Just subtract the exponent values because coefficient is same

Answer:

5x x (x-1) x (x + 1) x (x^2 + 1)

Step-by-step explanation:

5x x (x^4 - 1)

5x x (x^2-1) x (x^2+1)

Answer:

5x x (x-1) x (x + 1) x (x^2 + 1)

The ordered pairs model an exponential function, where b is the function name and q is the input variable.

{(1, 30), (2, 120), (3, 480), (4, 1920)}

What is the function equation in sequence notation?



Enter your answer in the box.

Answers

Answer:

30*4^q-1

Step-by-step explanation:

I just did the test and it said I got it right.

Use the slope formula to find the slope of the line through the points (−2,4) and (0,9).

Answers

Slope = rise/run

(y2 -y1)/ (x2-x1)

Slope = 5/2

Answer:

The slope of the line is [tex]\frac{5}{2}[/tex]

Step-by-step explanation:

Hi there!

We are given the following points: (-2, 4) and (0, 9)

We want to find the slope (m) of these 2 lines, and the problem asks us to use the slope formula

The slope formula is given as [tex]\frac{y_2-y_1}{x_2-x_1}[/tex], where [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex] are points

We have everything we need to calculate the slope, but let's label the values of the points to avoid any confusion.

[tex]x_1=-2\\y_1=4\\x_2=0\\y_2=9[/tex]

Now substitute these values into the formula to find the slope.

m=[tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

m=[tex]\frac{9-4}{0--2}[/tex]

Simplify.

m=[tex]\frac{9-4}{0+2}[/tex]

Add (or subtract) the numbers together

m=[tex]\frac{5}{2}[/tex]

The slope of the line is [tex]\frac{5}{2}[/tex]

Hope this helps!  

See more on finding the slope from 2 points here: https://brainly.com/question/26738734

y(2y + 5) = 0


a 0 or 5/2
b 0 or - 5/2
c 0 or - 2/5
d 0 or 2/5
e 0 or -5​

Answers

Answer:

option B

Step-by-step explanation:

option B is the correct answer of this question.

plz mark my answer as brainlist plzzzz if you get it right .

Answer:

I'm going with option A  

Step-by-step explanation:

ABCD is a parallelogram. Find the measure of ABC.
12°
B
130°
A
389
12°
с
38°
50°

Answers

Answer:

50°

Step-by-step explanation:

As we know that the opposite angles of parallelogram are equal so

< ADC = < ABC

< ABC = 38° +12°

< ABC = 50°

Hope it will help :)

6.

Which equation best describes the graph??

A. y = -4x - 5
B. y = -4x + 5
C. y = 4x + 5
D. y = 4x - 5

Answers

D.


Hope this helps!!!!
D. The line is positive and the y intercept is -5 which would give you y=4x-5

There are 30 balls numbered 1-30 in a bag. One is randomly selected 12 times. What is the probability of getting a prime number exactly five times?

Answers

Answer: The probability of getting a prime number exactly five times = 0.1908

Step-by-step explanation:

Prime numbers from 1 to 30 are 2,3,5,7,11, 13, 17, 19, 23, 29.

The probability of getting a prime number p= [tex]\dfrac{10}{30}=\dfrac13[/tex]

Number of trials n = 12

Binomial probability formula:

[tex]P(X=x) = \ ^nC_x p^x(1-p)^{n-x}[/tex]

, where x= number of successes

n= number of trials.

x = Number of successes

p= probability of getting one success.

The probability of getting a prime number exactly five times:

[tex]P(X=5)=\ ^{12}C_5(\frac13)^5(1-\frac13)^{7}[/tex]

[tex]=\frac{12!}{5!7!}(\frac1{243})(\frac{128}{2187})\\\\=0.1908[/tex]

Hence, the probability of getting a prime number exactly five times = 0.1908

IF U WAN BRAINLIEST PLS HELP

Answers

7) 65%

8) 5%

9) 19 pencils

10) 30 questions

7)20 - 7 = 13

13/20= 0.65

0.65= 65%

8) 40 - 38 = 2

2/40= 0.05

0.05 = 5%

9) 0.38 times 50 = 19

10) i just did 30 divided by 27 and got 90%

Consider the figure below. If you were to make a quadrilateral by rotating triangle RST 180° about U, which type of quadrilateral would form?

Answers

Answer: it’s a rectangle

Step-by-step explanation:

It says that on the review thing for khan :)

$9.45 meal, 20% tip does answer know the answer

Answers

Answer: $7.56

Step-by-step explanation:

1.89 I think LOL but don’t quote me

A home improvement store advertises 60 square feet of flooring for $287.00 including an $80.00 installation fee. Write an equation to represent the cost of one square foot of flooring

Answers

Hello there,
60 square feet= $287.00 + $80.00
= $367
1 square feet= $367 / 60
= $6.116666667
= $6.12 (to 2dp)

Hope this helps :))

i need this fast it’s due tonight

Answers

Answer:

12

Step-by-step explanation:

diameter is just radius times 2

hope this helps!

please mark me brainliest! thanks!

pls help me!!!!!!!!!!!!!!!!!

Answers

Answer:

1/4

Step-by-step explanation:

because when u add the demical u get the answer b

1/4
Because I took the test not too long ago

Suppose that the probability that your mail is delivered before 2 pm. 90. What is the probability that your mail will be delivered before 2 pm for two consecutive days? Give your answer as a decimal.
Thank you!

Answers

Answer:

Step-by-step explanation:

1. The probability that your mail is delivered before 2 pm is 0.9, so the probability that the mail is delivered at 2 pm or after 2 pm (so not before 2 pm) is 1-0.9=0.1.

Remark: 0.9=9/10=90/100=90%, and 0.1 is 10%

2. Probability of the mail being delivered before 2 pm for 2 consecutive days is  

3. take a look at the picture attached, the tree diagram is another method we could use.

Answer:

.81

Step-by-step explanation:

I have acellus too and this is the correct answer. I can't explain it very well. Sorry!

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