Mathematics High School

-3x - 8y = 20
-5x + y = 19

Answers

Answer 1

Answer:

x=4      y=-1

Simplify:

100+43y over 3 = 19

Step-by-step explanation:

-3x-8y=20

-5x+y=19

Related Questions

A bottle of soap costs $3.45 for 64ounces. What is the cost per ounce?

Answers

Five cent per a ounce

Answer:

$0.05

Step-by-step explanation:

All you have to do us divide the cost by the amount of ounces

3.45 ÷ 64 is about 0.05

The full answer is 0.05390625

Since we are talking about money, it should be $0.05

Anyone help me solve for y.

Answers

Answer:

y = - 4

Step-by-step explanation:

Given

y = 2x + ( - 2) , that is

y = 2x - 2 ← substitute x = - 1

y = 2(- 1) - 2 = - 2 - 2 = - 4

This is confirmed by the point (- 1, - 4 ) on the graph

X = -1
So if you Plug that in to your problem it is shown as y=2(-1)+-2.
2•-1 is -2 and when added to -2 you answer is -4.
Y=-4

Emma bought three cans of tennis balls for $4 each. Sales tax for all three cans was $0.95. Wh
expression shows what Emma paid?

Answers

Answer:

4(3)+0.95=X

Step-by-step explanation:

Answer:

A sixth-grade student bought three cans of tennis balls for $4 each.

The sales tax for each can was $0.95.

To Find :

The total amount the student spent.

Solution :

Price of each can including taxes :

p = $( 4 + 0.95 )

p = $4.95

So, price of 3 such cans including tax is :

P = p×3

P = $( 4.95×3 )

P = $14.85

Therefore, total amount spend by the student is $14.85 .

Step-by-step explanation:

Compare the functions shown below: g(x) f(x) = −3x + 2 cosine function with y intercept at 0, negative 3 h(x) = 4 sin(2x + π) + 3 Using complete sentences, explain which function has the greatest y-intercept.

Answers

Answer:

3 h(x) = 4 sin(2x + π) + 3

Step-by-step explanation:

The function h(x) has a greater y-intercept

How to compare the functions?

The functions are given as:

f(x) = -3x + 2 h(x) = 4 sin(2x + π) + 3

Set x to 0,to calculate the y-intercepts

f(0) = -3(0) + 2 = 2

h(0) = 4 sin(2(0) + π) + 3 = 3

From the above computation, we have:

f(0) = 2

h(0)= 3

By comparison, we have:

h(0) > f(0)

This means that the function h(x) has a greater y-intercept

Read more about y-intercepts at:

https://brainly.com/question/1884491

100 POINTS!!! The table shows the values of a function f (x), What is the average rate of change of f (x) over the interval from x = 5 to x = 9? Show your work.

Answers

Answer:

1. (f(x)-f(a))/(x-a) **A(x)=(f(x)-f(a))/(x-a) This average rate of shift attribute is designated by the letter A. *f(x) - f(a) represents the difference in the function f as the input transitions from a to x. x - a represents the change in the input of the function f.

f(5)=-2 f(9)=14 (f(5)-f(9))/(5-9)=(-2-14)/-4=4 (f(5)-f(9))/(5-9)=(-2-14)/-4=4

Over the range of x = 5 to x = 9, the average rate of change is 4.

2. g(x)=2x2+13x+1, f(x)=4x2+6x

(f/g)(x)=(4x2+6x)/(2x2+13x+1) (f/g)(x)=(4x2+6x) (f/g)(x)=(4x2+6x)

f(x): 88/85,155/116,180/151,238/190,304/233,378/280 f(x): 88/85,155/116,180/151,238/190,304/233,378/280 f(x): 88/85,155/116,180/151,238/190,304/233,378/280 f(x): 88/85

3. f(x)=x2-6x+8, g(x)=x-2, g(x)=x-2, f(x)=g (x)

x2-6x+8=x-2, x2-6x-x+8+2=0, x2-7x+10=0, x2-6x-x+8+2=0

x1,2=(7+(72-4*10))/2=(7+3)/2 x1=5, x2=2 x1=5 x2=2

Step-by-step explanation:

find the area please​

Answers

Answer:

86.54625

Step-by-step explanation:

Formula: a = πr², r = d/2

Given: π = 3.14, d = 10.5

Sub: a = (3.14)r²

Find r.

10.5/2

5.25

Sub: a = (3.14)5.25²

Solve: 86.54625

According to the line of best fit, if a batter struck out about 80 times, about how many hours did the batter practice?

Answers

Answer:

The batter practice for 4 hours

Step-by-step explanation:

Here, we want to use the line of best fit for an estimation

What we will do here is to identify the point 80 strikecuts on the y-axis

After getting this, we trace this right wards toward the line of best fit

Upon getting this, we trace down to the x-axis to get the number of hours indicative of the strikecuts

By doing this, we can see that the number of hours is simply 4 hours

If z=2
3 (x-12) and x=39, then what is z?

Answers

Answer:

621

Step-by-step explanation:

23(39-12) > 23(27)

23(27)= 621

is the value of
is 14?

Answers

Answer: So in the number 14, there is one ten and four ones—10 + 4 = 14. If we change that 1 to a 2, we get 24, or twenty-four. The number 2 in the tens place tells us there are two tens. Each place value is 10 times larger than the place value to the right of it.

Step-by-step explanation:

He determined that the value of 6 in 76,345 is 100 times the value of 6 in 34,675. Part A: Is Lucas right? Part B: Explain why Lucas is right or wrong.

Answers

Answer:

Lucas is not right.

Step-by-step explanation:

To find: whether the value of 6 in 76,345 is equal to 100 times the value of 6 in 34,675

Solution:

Value of 6 in 76,345 = 6,000

Value of 6 in 34,675 = 600

Now 6000 = 10 × 600

So,

Value of 6 in 76,345 is equal to 10 times the value of 6 in 34,675.

Therefore, Lucas is not right.

Answer:

Part A: Lucas is wrong.

Part B: The value of 6 in 76,345 is 6,000 and  the value of 6 in 34,675 is 600.

Part C: The value of 6 in 76,345 is equal to 10 times the value of 6 in 34,675.

10 × 600 = 6,000

Step-by-step explanation:

I put this on each of my answers and I got all three parts correct. Hope this helps you!!!!

Please mark my answer as the Brainiest!!!!!

Thank You!!!!!!!!

PLEASE HELP I WILL GIVE BRAINLIEST ACTUALLY PLEASE HELP

Answers

Answer:

$60

Step-by-step explanation:

I need help I'm struggling :(

Answers

Ohh !! I’ll help you. I think your suppose to find the area of the rectangle prism? I suppose?
To find the rectangular prism, you’ll have to use this formula : LWH
L= length
W=width
H=height
Multiply those together and you will get your answer.

V=LWH
V=6*6*10
V=36*10
V=360 square 2 is your answer! ( remember to put units )

- have a great day :)

Which one doesn’t belong?
Come up with one reason for at least 3 different boxes

Answers

Answer:

I think box #1 doesnt't belong because it say spend $100 and get $10 off

Step-by-step explanation:

Which is equivalent to x2 - 4x = 12 by completing the square

Answers

Answer:

x = 6 , − 2

Step-by-step explanation:

Kayley read 12 and 1/4 pages in 1/3 hour

Answers

Ion so confused what’s the question?
what’s the full question?

HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP

Answers

9514 1404 393

Answer:

  B.  rectangle, not a square

Step-by-step explanation:

When you plot the points, you see the lines between them have a rise/run of 3/2 or -2/3. The product of these numbers is -1, so the sides of the figure are perpendicular (not a rhombus, not a trapezoid). The figure is not square, so is ...

  rectangle that is not a square

Russel has a collection of 1,200 pennies. Of these pennies, 25% are dated before 1980, 35% are dated from 1980 to 2000, and the rest are dated after 2000. How many pennies in Russell's collection are dated after 2000?

A. 480


B. 720


C. 40


D. 60

Answers

Answer:

D. 60

Step-by-step explanation:

Add the percentages of 25% and 35% and you'll get 60.

Answer:

A 480

Step-by-step explanation:

in 2000=480 i don't know how to farther explain it to you.hope that helps.

Tiara attended 12 piano classes in four weeks. If she attended the same number of classes each week, which equation can be used to find the number of classes she attended every week?
A.4 + c = 12
B.4c = 12
C.12c = 4
D.12 - c = 4

Answers

Answer:

C

Step-by-step explanation:

Because i'm smart and did the math.

What’s the formula to find the area of a right triangle? (pythagorean theorem)

Answers

Answer:

multiply the hight and length then divide it by 2

Step-by-step explanation:

Can some please help me on question 2 I am just confused.

Answers

Answer:

ok so weknow tht 160 pounds cost 9.60 how much do u think will 1.50 cost

Step-by-step explanation:

PLS HELP I WILL MARK THE BRAINLIEST.

Answers

Answer:  HELP ASA! I NEED HELP ON MY TWO LAST QUESTIONS

Step-by-step explanation:

A zoo starts off with 8 monkeys, and the monkeys population
doubles every year. How many monkeys are in the zoo after 4
years?
monkeys

Answers

Answer:

32

Step-by-step explanation:

64 because the first year you’ll have 8 monkeys which doubles for the second year where you’ll have 16 monkeys. in the third year they will be 32 and it doubles in the last year making the total 64

Ashley deposited $4,000 into a savings account that earns 4% simple interest. How much interest did she earn after three years?

Answers

Answer:

for the 1st year she earned 160 so for 3 years she will earn $480

additive inverse of 8/-13 pls help fast​

Answers

Answer:

8/13

hope this answer helps you.....

Please help! Check to see if I have all of them correct! Will mark brainlist

Answers

I am pretty sure they are all right

write a linear equation using y=mx+b

Answers

Jsjsnsnendndndnndjxjxjcjcjcjjcjxjx

A .Write an equation for the trend line in slope -intercept form .

Answers

Given:

The graph of a trend line.

To find:

The equation of the trend line is slope intercept form.

Solution:

From the given graph it is clear that the equation of the trend line is passes through the points (0,25) and (5,50).

Slope of the line is:

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

[tex]m=\dfrac{50-25}{5-0}[/tex]

[tex]m=\dfrac{25}{5}[/tex]

[tex]m=5[/tex]

The line passes through the point (0,25). So, the y-intercept of the line is 25.

Slope intercept form of a line is:

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

Where, m is slope and b is y-intercept.

The slope intercept from of the line is:

[tex]y=(5)x+(25)[/tex]

[tex]y=5x+25[/tex]

Therefore, the equation for the trend line in slope -intercept form is [tex]y=5x+25[/tex].

Solve for x

2(x+5)-7=3(x-2)

Answers

x=9

I'm sorry if I'm wrong

Answer:

x=9

Step-by-step explanation:

2(x+5)-7=3(x-2)

distribute the 2 and 3 which gives you

2x+10-7=3x-6

combine like terms

2x+3=3x-6

move the 2x to the other side by subtracting which gives you

3=x-6

add 6 to the other side which gives you

9=x

2 x 5/6

Help me please

Answers

Answer:   1.66666666667

5/3
I hope this helps!

what is the product
4/6 x 9

13/16

36/54

3

6​

Answers

the answer is 6! have a good day
Other Questions
Drag the labels onto the diagram to identify the basic structures of the epidermis-dermis junction How do you solve using a graph? s it possible to change velocity while moving at a constant speed?absolutely not because they are of the same value; a speed is just a magnitude of a velocity.yes, if acceleration has component parallel to the velocity but has no component perpendicular to the velocity.yes, if acceleration has component perpendicular to the velocity but has no component parallel to the velocity.no, change is velocity will be always followed by the change in speed. shuffle a standard deck of 52 playing cards. turn over the top card. put the card back in the deck and shuffle again. repeat this process until you get a queen. count the number of cards you had to turn over. which conditions for a binomial setting have been met for this scenario? _____ take(s) the view that capitalist and socialist economic systems, in adopting features of one another, will create a mixed economic system. "Are elephants real?" I asked my dad.He looked quite stunned and shocked."Because if they are, well don't you think,You'd see them in the shops?""It's not like that," dad said to me."They're just not put on sale.""But why?" I said, "They should, you know.And maybe also whales!""They're just not put on sale.""But why?" I said, "They should, you know,And maybe also whales!""I don't understand," my dad confessed."Why you think this should be so."He scratched his head and then his chin,"I don't get it. No...no...no!""Just think of it," I said to dad,They'd be fun to have around!""I could use one just to help me,See the world from off the ground."That's true," dad said, "But you should know.That elephants don't like cities.Oh," I said, "Well that's a shame.That really is a pity."Which word best describes the mood of the poem?seriouspitifulmagical mast company reports net income of $315,000 for the year ended december 31. it also reports $98,900 depreciation expense and a $10,600 loss on the sale of equipment. its comparative balance sheet reveals a $42,600 increase in accounts receivable, a $10,800 decrease in prepaid expenses, a $16,200 increase in accounts payable, and a $13,300 decrease in wages payable. calculate the net increase in cash for the year. A customer contact audit is done by A society is productive inefficient when O a. it produces at a point on its PPF. O b. it does not produce the maximum amount of output with its given resources and technology O c. it can produce more of one good only by giving up some of another good. O d. it produces at a point beyond its PPF Research some professional organizations and agencies related to the healthcare field and examine the roles that each play. List at least one organization related to the diagnostics pathway and one related to the therapeutics pathway, and discuss how healthcare professionals benefit from being members. Why did some black abolitionists become increasingly militant? Are teachers respected in Vietnam? What are 2 major benefits that have resulted from NAFTA? co2 gas in a closed container has a partial pressure of 0.400 atm. if all the co2 is consumed in the reaction below, what is the partial pressure of the o2 formed? (assume constant volume and temperature.) a car owner decides to leave his car outside on a cold winter day. the next morning, the driver noticed ice on the windshield, a product of deposition. choose the best reason explaining this phenomenon. what happened? You are tasked with scanning across the network space 192.168.2.x and identifying what operating systems are presently running. Select the correct tool and command-line switch necessary to determine what operating systems are running on that subnet.A. nikto -Version 192.168.2.0B. nmap -O 192.168.2.0/24C. syslog -network 192.168.2.0-192.168.2.254D. netstat -a 192.168.2.0 /24 Why did people immigrate to Chicago? What is the moral lesson of Huckleberry Finn? What does a barter economy rely on? you have been asked to configure high availability for your dhcp service in your network by your chief technology officer. she has requested that you utilize an option that preserves lease information, even if one server fails, and efficiently utilizes all servers for lease assignment. what should you use?