Mathematics Middle School

For what ordered pair (a,b) are there infinite solutions (x,y) to the system
4x + ay = -8,
2x + y = b.

Answers

Answer 1

Answer:

(2, -4)

Step-by-step explanation:

The second equation should be half of the first equation.

Related Questions

What is the slope of the line that contains these points? PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ HELP

Answers

Answer:

choose two points. (13, 11) and ( 14, 6)

use the slope formula (y2-y1)/(x2-x1)

and then plug it in and solve

(6 -11)/ ( 14-13)

-5/ 1

the slope is -5

Step-by-step explanation:

I hope this helps :)

Find the sales price for a $900 TV with a 25% discount.
Discount = Regular Price X Rate of Discount Sales Price= Regular Price - Discount.
b. Discount (mark down Expression) = ((Original price – (Original price x discount rate))

Answers

Answer:

$675

Step-by-step explanation:

100%=>$900

25%=>X

25% × $900 ÷ 100% = $225

So $900 - $225 = $675

AWNSER

$ 675 with discount

EXPLANATION

If it is 25% off of the sales price we can infer that you are paying 75% of the sales cost.

To find the price you answer the equation

900•.75= 675

Therefore the total cost with the discount of 675 dollars.


Hope this helps
Please mark Brainliest

Please help me I will give you the brain thing and extra points. (image below) 4/4

Answers

Answer:

b

Step-by-step explanation:

cuz trust

The sum of two numbers is 14 and their difference is 18. Find the larger number.

Answers

Answer:

Let a = the larger number and b = the smaller

a + b = 14

a - b = 18

We can add the 2 equations together.

2a = 32

2a/2 = 32/2

a = 16

The answer is 16
Because a = the larger number and b = the smaller number so equations would look like a+b=14 and a-b=18 we can add the 2 equations together and get 2a=32 then simply to 2a/2=32/2 then simplify that and get the answer a=16

Help w/ math, please & thanks!

Answers

Answer:

5. a

6. b

7. b

8. a

A
B
B
A

I think this is right!

Which scatterplot displays an example of a cluster? On a graph, points are grouped together and increases slightly. On a graph, points are scattered all over the graph. On a graph, points are scattered all over the graph. On a graph, points are scattered all over the graph.

Answers

Answer:

a and c

Step-by-step explanation:

Using the slope formula, find the slopes of the line segments
AB and CD using the following points:

(a) A(-3, 1) and B(6, 4) (b) C(-2,8) and D(1,-1)
Slope AB = Slope CD =

What do you notice about their slopes?

Answers

slope AB = 1/3
slope CD = -3
Im not sure about the last part but I think the product of slope AB and slope CD is -1 so line AB is perpendicular to line CD.
the workings are below:)
(so sorry if it’s wrong)

Hewo! May I have some help with this question?
Jacob is playing a game where he earns 3 points for a correct answer and loses 2 points for an incorrect answer. He currently has –6 points. What situation would end with him breaking even?
Answering one question correctly and the last question incorrectly
Answering one question incorrectly and the last question correctly
Answering the last two questions correctly
Answering the last two questions incorrectly

Answers

Answering the last two questions correctly

Answer:

option D

Step-by-step explanation:

Find the diameter of a circle with a circumference of 162π yd

Please help!
Thank you! :)

Answers

Answer: Isn't a circle always 360??

Step-by-step explanation:

Answer:

d ≈ 51.57

Sorry if this is not helpful.

(-3z+5)(-3) can you guys help with this one?

Answers

Without knowing the value of z (9z-15) is the answer of the equation in simplest form
9x-15 is the answer for this question because -3z*-3 is 9z and 5*3 is 15

Jermaine buys T-shirts for $6 each and marks up the price by 45%.
How much profit does Jermaine make for each T-shirt sold?

Answers

15 dollars is the answer

Who ever answer this question with explanation will get Branily!!!!!

Answers

40 percents because 20/100=5 5*8=40

Answer:

Step-by-step explanation:

So in order to get the answer you must put this as an equal fractions  8/20 as a fraction that equals to x/100 to get the percentage. After doing that you divide the known part of the fractions which in this case is the Denominators 100/20 gives you 5. After you get that answer you use it to multiply by 8 to get the percentage which I think is 40%

After restocking the vending machines, Efrain determined that 2 out of every 5 packages of candy sold were M&M'S®. The vending machine sold 160 packages of candy last week. How many packages of M&M'S® were sold?

Answers

Answer:

64

Step-by-step explanation:

Answer:

64

Step-by-step explanation:

Plz answer and explain!!! 10 points!!

Answers

I think it’s 5
Hopefully this helps

Answer:

20  square units

Step-by-step explanation:

First you would divide the sqaure  into 2 triangles and 1 suqare then you would find the area of those

Matthew deposited $2000 into a certificate of deposit with a rate of 11.5% for 1 year. How much money did he have in the account after 6 months?

Answers

Answer:

$333.33

Step-by-step explanation:

After 6 months they would have $333.33 because $2,000 divided by 6 is 333.33.

Hope this helps.

$333.33 that is the answer

Jaimi went to have a manicure that cost $30. She wanted to tip the technician 30% and the tax was 5.75%. How much did she spend total for the manicure

Answers

Answer: $41.24

Step-by-step explanation: Hope this helped.

The answer is $41.24 I think

Choose the correct set of y-values for the function y = -2x when x = -2, 0, 2.
(-2, 4), (0, 0), (2, -4)
(-2, -4), (0, 0), (2, -4)
(-2, 4), (0, -2), (2, 4)
(-2, -4), (0, 0), (2, 4)

Answers

the first one
y=-2(-2)=4
y=-2(0)=0

Please solve!
6y-6=4y+16

Answers

Answer:

Your answer is y=11 if ya need proof its in the picture :)

Step-by-step explanation:

Please help me I will give you the briain thing and extra points. (image below) 9/13

Answers

Answer:

C is the answer

Step-by-step explanation:

the answer is C hope this helps

Please help me i am very bad a math
(thank you )

Answers

Answer:

-4

Step-by-step explanation:

Answer:

hmmm idek, but prolly -4

Step-by-step explanation:

lol

What is the answer? Please help me!!! PLEASE!!!!

Answers

Answer:

a.) y=1/3x +3

Step-by-step explanation:

Find the price of Titan tickets if they are being sold for $80 dollars with a 15% sales tax.
a.$120
b.$1200
c.$12
d.$92

Answers

Answer:

yes

Step-by-step explanation:

yes

The answer would be D

Please help with this one make sure you tell me which one you are doing

Answers

Answer:

For the first one 13 7/8 - 9 3/4= 4 1/8

Step-by-step explanation:  turn to an improper faction it helps me

Answer:

4 1/8

Step-by-step explanation:

13-9=4

3/4=6/8

7/8-6/8=1/8

13 7/8-9 3/4=4 1/8

A circular swimming pool measures 79 feet around. What is the diameter?

Answers

Answer:

39 ft 6 inches

Step-by-step explanation:

Answer:

Get a teacher and see if they will help u or show u how to do it

Step-by-step explanation:

Hope this helps

At a book store there are 25 books on the clearance section. 20 of the books are young adult novels and the rest of the books are picture books. Which statement is not true? *
A) For every 4 young adult novels, there is 1 picture book
B) For every 5 books, 4 are young adult novels
C) The ratio of picture books to young adult novels is 1:4
D) There is 1 picture book for every 5 books
E) All statements are true

Answers

The statement that is not true is A
Option A is not true

I got -1 5/43, did i mess something up?

Answers

Answer:

I'm pretty sure the answer is -0.25

The answers -0.25 I’m sure it is

A courier originally had 5 packages to deliver. Suppose x represents the number of packages she has delivered so far and y represents the total weight of the packages she has yet to deliver. Which of the following statements are correct? Select three that apply.

Answers

Answer:

A,E,F

Step-by-step explanation:

What is the slope of the line through (-4,2)(−4,2)left parenthesis, minus, 4, comma, 2, right parenthesis and (3,-3)(3,−3)left parenthesis, 3, comma, minus, 3, right parenthesis? Choose 1 answer: Choose 1 answer: (Choice A) A \dfrac57 7 5 ​ start fraction, 5, divided by, 7, end fraction (Choice B) B \dfrac75 5 7 ​ start fraction, 7, divided by, 5, end fraction (Choice C) C -\dfrac57− 7 5 ​ minus, start fraction, 5, divided by, 7, end fraction (Choice D) D -\dfrac75− 5 7 ​

Answers

Answer:

-5/7

Step-by-step explanation:

slope = (difference in y)/(difference in x) = (-3 - 2)/(3 - (-4)) =

= -5/(3 + 4) = -5/7

Answer: -5/7

Answer:

-5/7 that is the answer

Step-by-step explanation:

Jasmine works at the public library after school. She makes $7.00 per hour. She cannot work more than 15 hours per work. If y=7x represents Jasmine's earning, what are the values in the domain?
A. x (greater than or equal symbol) 15
B. All real numbers.
C. 0 (greater than or equal to symbol) x (greater than or equal to symbol) 15
D. 1 (greater than or equal to symbol) x (greater than or equal to symbol) 15

Answers

Answer:

c

Step-by-step explanation:

Jasmine can work from 0 hours to 15 hours

Three times Mary’s age added to Beth’s age is 34 years. Half of Mary’s age minus Beth’s age is 1 year. How old are Mary and Beth?

Answers

The answer for this is 10 4

The age of Mary and the age of Beth will be 10 years and 4 years, respectively.

What is the solution to the equation?

The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.

Three times Mary’s age added to Beth’s age is 34 years. Half of Mary’s age minus Beth’s age is 1 year.

Let 'x' be the age of Mary and 'y' be the age of Beth. Then the equations are given below.

3x + y = 34        ...1

x/2 - y = 1          ...2

From equations 1 and 2, then we have

3(2y + 2) + y = 34

6y + 6 + y = 34

7y = 34 - 6

7y = 28

y = 4

Then the value of the variable 'x' is given as,

3x + 4 = 34

3x = 30

x = 10

The age of Mary and the age of Beth will be 10 years and 4 years, respectively.

More about the solution of the equation link is given below.

https://brainly.com/question/545403

#SPJ2

Other Questions
Thomas Edison was a man of broad and wide-ranging interests. During his lifetime, he developed inventions for consumers, businesses, and industries in fields ranging from sound reproduction to iron ore mining. Edison never limited his curiosity or his work. The one restriction he put upon his work was that a project had to have a practical commercial application. That meant his inventions had to have a market, so that the profits could fund new inventions.Edison had previously built laboratories in Newark and in Menlo Park, New Jerseyindeed, he had already won the nickname of the "Wizard of Menlo Park"when he moved to West Orange in 1886. When he began to build his new laboratory complex, Edison's goal was to have on hand everything needed to quickly and cheaply perfect inventions and ready them for mass production. All the necessary tools, machines, materials, and skilled personnel would be housed within the complex.To assist him in his invention work, Edison employed a large and diverse staff of more than 200 machinists, scientists, craftsmen, and laborers. This staff was divided by Edison into as many as 10 to 20 small teams, each working simultaneously for as long as necessary to turn an idea into a perfected finished prototype or model. Edison himself would move from team to team advising and cajoling efforts as necessary. When a particular invention was perfected, Edison quickly patented the device. With such extensive facilities and his large staff, Edison was able to turn out new products on an unprecedented scale and with unprecedented speed. From the West Orange complex came improved phonographs, a perfected alkaline storage battery, the movie camera, and the fluoroscope (a diagnostic tool widely used before X-rays were perfected).Long experience as an inventor had taught Edison that money was made not from selling patent rights or from royalties, but from the direct sale of the products to the public. In 1888, Edison began building factories next to his laboratory complex to manufacture the finished products based on his inventions. The finished products were distributed and sold around the country and abroad.This process is most clearly shown by Edison's work on the phonograph. He was the original inventor of the product, which first used foil cylinders to record sound. Shortly after he opened his new laboratory, Edison heard that the rival inventors had been awarded patents for improvements to the machine. Rather than suing these rivals for infringement of his original patent, Edison set out to develop his own "perfected" phonograph. For nearly two years, he and his team dedicated themselves to that goal.The diversity of Edison's inventive interests and industries helped the financial stability of his complex. The profits from older, successful inventions and companies provided the needed financial support for Edison's new ideas and companies. For example, during the long, difficult, and very expensive struggle to develop the alkaline storage battery, Edison's already successful phonograph business provided the necessary financial support.By uniting the resources of the laboratories and factories, Edison was able to accomplish far more than would have otherwise been possible. Edison and other inventors had previously been constrained by the small size of both their laboratories and their financial resources. 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