X+7y=0
X+4y=8
Solve the equation

Answers

Answer 1

Answer:

1.x=-7y

2.x=8-4y

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:


Related Questions

5 x (2+8) + (12-6/3) x2

Answers

Answer:x

3

+

64

x

3

1

12

t

8

Step-by-step explanation:

Answer:

5 x (2+8) + (12-6/3) x2

5×10+(12-2)×2

50+10×2

50+20

70

simplify expressions for 3c-4m and m=5 and c=4

Answers

Answer:

12-20=-8

Step-by-step explanation:

Multiply 3 by c which is 4=12  multiply -4 by m which is 5 which equals 20

Pls give brainliest

-8 because you plug in both the numbers in the corresponding letter 12-20

Line EF intersects the parallel lines AB and CD.
What is the measure of angle J in the figure below?

Answers

Answer:

d, 125

Step-by-step explanation:

Answer:

d)125

Step-by-step explanation:

Which of the following statements is correct?

Systems of Equations often have one solution. Systems of Equalities also often have one solution.

Systems of Equations often have infinite solutions. Systems of Equalities often have one solution.

Systems of Equations often have infinite solutions. Systems of Equalities also often have infinite solutions.

None of the above.

Answers

Answer:

Systems of Equations often have infinite solutions.

Step-by-step explanation:

I don't know if there are 7 answers or what

4x + 10 > 54 how do I solve this

Answers

Answer:

4x + 10 >54

-10. -10

4x> 44

/4. /4

x= 11

4(11) +10 >54

44+10.>54

54>54

the answer is false since they're both equal


Somebody pls help I need help wit my homework!!!!

Answers

Step-by-step explanation:

(3,4) would be the answer

What is the fraction 7/12 as a product of a whole number and a unit fraction

Answers

Answer:

7 1/2 is the answer because you have to multiply the whole by the denominator. Make that product the numerator.

Step-by-step explanation:


What is the value of the fourth term in a geometric sequence for which ay =
10 and r = 0.5?

Answers

Answer:

1.25

Step-by-step explanation:

a = 10 and r = 0.5

The formula for calculating any term in a geometric sequence is a (the first term) times r (the common ratio) raised to the power of n - 1.

In this case n = 4, since we're looking for the fourth term.

so,

Un = ar^n-1

= ar^4-1

= ar^3

U4 = 10 × 0.5^3

= 10 × 0.125

= 1.25

On the occasion of its 10-year anniversary, AJ Inc. sells lucky draw tickets. If the customers are interested in the lucky draw contest, then they have to purchase a ticket for $15. The gift could be worth $115, $215, $315, or nothing. The probability of each event is given below. What is the value of the standard deviation

Answers

This question is incomplete, the complete question is;

On the occasion of its 10-year anniversary, AJ Inc. sells lucky draw tickets. If the customers are interested in the lucky draw contest, then they have to purchase a ticket for $15. The gift could be worth $115, $215, $315, or nothing. The probability of each event is given below. What is the value of the standard deviation

Probability              0.35     0.26     0.21      0.18

Amount gained     $100     $200   $300    -$15

Option;

a) $11,143

b) $106

c) $10,200

d) $147

Answer:

the standard deviation is 106

Option b) $106 is the correct Answer

Step-by-step explanation:

Given the data in the question;

let the random variable be x

x = amount gained by customers in a lucky draw contest

so

Variance (x) = [∑(x² × P(x))] - [(∑(x × P(x))²]

so

x              x²               p(x)        x.p(x)       x².p(x)

$100      10,000        0.35       35           3,500

$200     40,000       0.26       52          10,400

$300     90,000       0.21        63           18,900

-$15         225           0.18       -2.7          40.5

TOTAL                                   147.3         32,840.5

Variance (x) = [∑(x² × P(x))] - [(∑(x × P(x))²]

we substitute;

Variance (x) = 32,840.5 - (147.3)²

Variance (x) = 32,840.5 - 21,697.29

Variance (x) = 11,143.21

Now Standard Deviation = √variance

so, S.D = √11,143.21

S.D = 105.56 ≈ 106

Therefore, the standard deviation is 106

Option b) $106 is the correct Answer

In an urban area, 31% of dog owners pay for someone to walk their dogs. Morgan asks a random sample of 50 dog owners in this urban area if they pay for someone to walk their dog. What is the probability that more than 30% of the owners in the sample pay for someone to walk their dog?

A. 0.439

B. 0.519

C. 0.561

D. 0.586

Answers

Answer:

c 0.561

Step-by-step explanation:

did the test on edge

The probability that more than 30% of the owners in the sample pay for someone to walk their dog is option c. 0.561.

Calculation of the probability:

Since 31% of dog owners pay for someone to walk their dogs. Morgan asks a random sample of 50 dog

So

= P> ( 0.30 - 0.31) / √0.31 (1 - 0.31)/ 50

= P(z > - 0.1530)

= 0.5608

= 0.561

Hence, the option c is correct.

learn more about probability here: https://brainly.com/question/24760080

Can you guys help me out ps hurry im timed

Answers

Answer:

If it's supposed to have no solution, I think you can just use an extreme number, like -30 or something.

Rewrite the fraction in the sentence below as a percentage. From 100 yards away, a marksman hits 13/20 of the yard last year

Answers

The answer is 65 percent

5z+7=3 what solution

Answers

Answer:

z = -4/5

Step-by-step explanation:

5z + 7 = 3

5z = -7 + 3

5z = -4

z = -4/5

Hope this helps :)

Let me know if there are any mistakes!!

In the typing world, 80 words per 5 minutes is considered acceptable.
How many words per minute is this?

Answers

Answer:

16

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

Write the word sentences as an equation. Then solve the equation.

A number k increase by 7 is 34.

An equation that represent this word sentences is?

The solution is k=?

Answers

Answer:

k+7=34

k=27

Step-by-step explanation:

what grade is this for?

hope this helps

Definition: This is the rate of distance traveled per unit of time, without regard to direction.
Example: 55 miles per hour on the highway
es )
Term: Type term here

Answers

Answer:

A graphic representation of velocity. Also used to represent speed. This is the rate of distance traveled per unit of time, without regard to direction. ... The slope of the line tells us the rate of change in velocity.

Step-by-step explanation:

Determine the domain of the following graph:

Answers

-8 (is less than or equal to) x ( which is less than) 3
Or [-8,3)

write an equation in slope-intercept form for the line that has a slope of 4 and passes through the point (3,24)​

Answers

Answer:

y = 4x + 12

Step-by-step explanation:

y = mx + b

'm' represents slope

'b' represents the y-intercept

use the slope and the point (3,24) as your x and y inputs to find 'b'

24 = 4(3) + b

24 = 12 + b

b = 12

y = 4x + 12

A town has a population of 13,000 and grows at 4.5% every year what will be the population after 13 years to the nearest whole number

Answers

Answer:

23,039

Step-by-step explanation:

13,000×1.045¹³ ≅ 23,039

An amount of $44,000 is borrowed for 9 years at 3% interest, compounded annually. If the loan is paid in full at the end of that period, how much must be paid
back?

Answers

Answer:

A= $52,190.93

Step-by-step explanation:

A = $ 52,190.93

A = P + I where

P (principal) = $ 40,000.00

I (interest) = $ 12,190.93

Calculation Steps:

First, convert R percent to r a decimal

r = R/100

r = 3%/100

r = 0.03 per year,

Then, solve our equation for A

A = P(1 + r/n)nt

A = 40,000.00(1 + 0.03/1)(1)(9)

A = $ 52,190.93

Summary:

The total amount accrued, principal plus interest,

from compound interest on an original principal of

$ 40,000.00 at a rate of 3% per year

compounded 1 times per year

over 9 years is $ 52,190.93.

What information does the reader know before it is discovered by the other characters in the play?

Answers

Answer:

The woman will give the brothers an unusual test

Step-by-step explanation:

I need help pleaseeeee

Answers

Answer:

The value will be positive because there are five minus signs which means negative but the there are two minus before the biggest number which means positive.

Derek and Jeannine buy a car for a total price, including tax, of $19,795.
The price of the car without tax was $18,500. What is the tax rate? (PLEASE HELP ME)

Answers

Answer:

1,295 I believe

Step-by-step explanation:

19,758 - 18,500 = 1,295.

Please help on this I will mark brainlist!!!

Answers

9d=h


Needs to be 20 characters

can somebody help me plz ??!!

Answers

Answer: number 1

Step-by-step explanation: an example of an irrational

number is pi. it terminate and is a decimal      

How many different ways can teams of four members be formed from a
class of 20 students?
A) 5
B) 80
C) 4,845
D) 116,280

Answers

Answer:

20C4=4845

Step-by-step explanation:

The function D =25+0.3 X represents the daily dental charge D in dollars for X miles driven

Answers

Answer:

See Explanation

Step-by-step explanation:

Given

[tex]D = 25 + 0.3X[/tex]

The question has missing details; as what's required is not stated.

However, since it is a linear equation, possible questions could be

1. Determine the slope

2. Determine the D-intercept

3. Calculate the amount in dollars for (say) 5 miles

An equation is represented as:

[tex]D = b + mx[/tex]

Where

[tex]b = D\ intercept[/tex]

[tex]m = slope[/tex]

By comparing: [tex]D = 25 + 0.3X[/tex] to [tex]D = b + mx[/tex]

[tex]b = 25[/tex] and [tex]m = 0.3[/tex]

This means that the slope is 0.3 and the d intercept is 25

To get the amount for 5 miles, we substitute 5 for x in [tex]D = 25 + 0.3X[/tex]

[tex]D = 25 + 0.3 * 5[/tex]

[tex]D = 25 + 1.5[/tex]

[tex]D = 26.5[/tex]

The cost of 5 miles is $26

Make use of the above explanation to solve the question

can you guys please help me

Answers

9514 1404 393

Answer:

  see below

Step-by-step explanation:

Each vertex has a single-letter label.

Each edge joins two vertices, and is named by naming those two vertices.

Each polygon is named by listing the vertices at its corners. It is a plane figure.

The base is the polygon opposite the point where all of the triangles come together.

__

16. figure: pentagonal pyramid ABCDEF

17. base: ABCDE

18. faces: ABF, BCF, CDF, DEF, AEF, ABCDE (the bottom face, or base)

19. edges: AB, BC, CD, DE, AE, FA, BF, CF, DF, EF

20. vertices: A, B, C, D, E, F

The value of a painting has a growth factor of 107. The current value of the painting is $345. How much was it orginally worth when you purchased it 10 years ago

Answers

Answer:

70$

Step-by-step explanation:

Which point is a reflection of (-3,-3) across the y-axis?
(-3, 3)
(3, 3)
0 (-3,-3)
o
(3,-3)

Answers

Sorry if it’s too late, but I worked it out for you.

The point which is a reflection of (-3,-3) across the y-axis is, (3, - 3)

What is Coordinates?

A pair of numbers which describe the exact position of a point on a cartesian plane by using the horizontal and vertical lines is called the coordinates.

We have to given that;

The point is,

⇒ (- 3, - 3)

Now, We know that;

The rule of reflection after across the y - axis is,

⇒ (x, y) = (- x, y)

Thus, The point which is a reflection of (-3,-3) across the y-axis is,

⇒ (x, y) = (- x, y)

⇒ (-3, -3) = (- (-3), -3)

              = (3, - 3)

Learn more about the coordinate visit:

https://brainly.com/question/24394007

#SPJ2

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