Mathematics Middle School

Consider the following linear system.

Consider The Following Linear System.

Answers

Answer 1

Answer:

k= 10

Step-by-step explanation:

2x - 5y = 15

ky = 20 +4x

Solve the first equation for  y

-5y = -2x +15

Multiply by -2

10y = 4x - 30

If k = 10 then the slopes are the same, but the y intercepts are different.

The lines are parallel.  They will never intersect, and they have no solution

Answer 2

Answer:

D

Step-by-step explanation:

- 5y = - 2x +15

10y = 4x - 30

if k = 10, then the y intercepts are different, and the lines--being parallel--don't ever meet, so k = 10 would result in 0 solutions.

Hope this helps!

Related Questions

Please help me answer.

Please help me answer.

Answers

Answer: First blank is 15 then 28 then 25 in the last blank.

Step-by-step explanation:

On the left side column it is going up by 5 and the right column is going up by 7.

For the first column it will go 5,10,15,20,25
And second column is 7,14,21,28,35

Please help 10 points each but beware if you use my points for no reason I'll report you

Please help 10 points each but beware if you use my points for no reason I'll report you

Answers

Answer:

20 cubic feet

Step-by-step explanation:

The volume of a pyramid is Volume = 1/3Bh where B is the area of the base of the pyramid and h is the height of the pyramid

The area of the base is 5 square feet

The height is 12 feet

Now we plug in the known dimensions to the equation

\(\frac{1}{3} (5)(12) = 20\)

Hope this helps

Answer:

Volume of triangular pyramid = 1/3 * area of base *  height
                                                 = 1/3*A*hBase area = 3 square ft
Height       = 4 ft
Volume = 1/3*a*h
            = 1/3 * 3 * 4
            = 4 cubic ft

Step-by-step explanation:

Please help me!!!!!!

Please help me!!!!!!

Answers

Answer:

this is the answer :621cm²

Step-by-step explanation:

23×27=621cm²

Answer:

Step-by-step explanation:

Area of the parallelogram = Area of rectangle

bh = lb

We can make a rectangle from a parallelogram.

So, Area of parallelogram = bh

27*23

= 621 sq. cm

Hope it helped. Pls mark me the BRAINLIEST!

Which list orders the numbers from least to greatest?

Negative 2.4, negative 1.5, negative 2 and one-fourth, negative 3, negative 1 and one-eighth

A number line going from negative 4 to positive 4.
Negative 1 and one-eighth, negative 1.5, negative 2 and one-fourth, negative 2.4, negative 3
Negative 3, negative 2.4, negative 2 and one-fourth, negative 1.5, negative 1 and one-eighth
Negative 3, negative 2 and one-fourth, negative 2.4, negative 1 and one-eighth, negative 1.5
Negative 1.5, negative 1 and one-eighth, negative 2.4, negative 2 and one-fourth, negative 3

Answers

Negative 3, negative 2.4, negative 1.5, negative 2 and one-fourth, negative 1 and one-eighth


Hope my answer helps you✌️

Negative 3, negative 2 and one-fourth, negative 2.4, negative 1 and one-eighth, negative 1.5 is the list that orders the numbers from least to greatest.

PLEASE HELP ME ON THIS ASAP

PLEASE HELP ME ON THIS ASAP

Answers

The answer to .45 * .12 is 0.054

Answer:0.054 becuase 0.45x 0.12.=0.054

Selena babysits on the weekends. The equation y = 12x represents the amount of money she earns. What is the constant of proportionality?​

Selena babysits on the weekends. The equation y = 12x represents the amount of money she earns. What

Answers

Answer: According to the question the constant would be 12

Step-by-step explanation: Its 12 because every hour she earns 12 dollars and as the y changes so will the amount of money she earns Ex: y=2 she earns 24 dollars.

Answer - 12

Step by step- She is constantly earning 12 dollars per hour and that factor is never changing therefore it would be the constant of proportionality

Solve the linear equation 17 - x = ⅓ times 15 + 6. State the property that justifies your first step and why you chose it.

Answers

Answer:17−x=13=x=50

Step-by-step explanation:15+6=21

hey can you please answer this question on 7th grade exponents? thank you! boo

hey can you please answer this question on 7th grade exponents? thank you! boo

Answers

I did this before and it’s b

Someone help me with this ASAP!!! And tell me how u did it!

Someone help me with this ASAP!!! And tell me how u did it!

Answers

8 2/3 or 26/3 is the answer

I changed them both to improper fractions, multiplied 10/3 times 8/5. Which equals 16/3. So i added 10/3 + 16/3 and got 26/3. If you change it into a mixed number you get 8 2/3

8 2/3 or 26/3 is the correct answer

I need some help please

I need some help please

Answers

A. 720800/x=7.208
Cross multiply
720800/7.208x
X=720800/7.208
X= 100,000
B. 720800/x=72.08
720800/72.08x
X=10,000
C. 720800/x=720.8
720800/720.8x
X=7208000/720.8
X=1000
The direct answer for the question is;
A. =100000
B. =10000
C. =1000

helpppppppp pleaseee fastttt

helpppppppp pleaseee fastttt

Answers

Answer: The train travels 50 miles per hour

Step-by-step explanation:

You already figured out the slope! The explanation is that the train travels 50 miles each hour.

The Slope Intercept form of the equation would be y=50x

If you substitute x with any number you can solve to see how much hours the train traveled.

So the train travels 50 miles per hour!

I hope this is what you needed help with!

The train travels 50 miles per hour

HELP PLEASEEE ILL MARK BRAINLIEST questions are in the pic

HELP PLEASEEE ILL MARK BRAINLIEST questions are in the pic

Answers

Answer:

Please ask you instructor for a more elaborated question.

Step-by-step explanation:

Answer:

1/2-up 1 and to the side 2

1/4- up 1 and to the side four

no because 1/2 is not 1/4.

Step-by-step explanation:

help, please...

Write an inequality describing all the real numbers on the number line that are less than -5.
Inequality:

help, please... Write an inequality describing all the real numbers on the number line that are less

Answers

Answer:   x < -5

The graph will have an open circle at -5 on the number line. Shade to the left so you describe all values smaller than -5.

help, please... Write an inequality describing all the real numbers on the number line that are less

Answer: -8 >= x < -5

Step-by-step explanation:

Robin wants to buy a membership at a carwash this summer so that she can keep her car clean. She compared deals from Speedy Clean Carwash and Sudsy Bubbles Carwash to decide which membership to get. Robin arranged the information in the tables below.
How many times will Robin need to wash her car to spend the same amount at both carwashes?
P.S.: I attached the table below:)

Robin wants to buy a membership at a carwash this summer so that she can keep her car clean. She compared

Answers

Robin will need to wash her car 4 times to have spent the same amount at both car washes. I hope this helps!
Robin wants to buy a membership at a carwash this summer so that she can keep her car clean. She compared
It will be 35 dollars

I'm Kind of stuck here help plz

I'm Kind of stuck here help plz

Answers

I think the answer is C hope this helps

Ellie is ordering hot dogs for her son's birthday party. Each hot dog cost $1.50. For orders smaller than a dozen hot dogs, there is a $3 delivery charge. Is the cost proportional to the number of hot dogs ordered?

Answers

Answer:

yes

Step-by-step explanation:

3 goes into 1.50

Yes
3 goes into 1.50

Can some please help me?

Can some please help me?

Answers

Answer:

ofc 8374747374743i3i3i383

1. (-6)^2+5

5. 16t^4/8t^4

9. 6^3+6+4/6^2+3+3



THE ADDITION PART IS STILL EXPONENTS
I hope that was easy to understand, here’s a guide if you need it in the future

A basketball coach plotted data about her shooting guard’s playing time and point scoring in a scatterplot. Shooting Guard Minutes Played and Points Scored Which is the equation of the line of best-fit?
y = StartFraction 15 Over 22 EndFraction x + StartFraction 6 Over 11 EndFraction
y = StartFraction 15 Over 22 EndFraction x + StartFraction 43 Over 11 EndFraction
y = StartFraction 22 Over 15 EndFraction x minus StartFraction 86 Over 15 EndFraction
y = StartFraction 22 Over 15 EndFraction x minus four-fifths

Answers

Answer:3

Step-by-step explanation: simple math

I think the answer is C y = StarFraction 22 over 15 EndFraction x minus StarFraction 86 Over 15 EndFraction

Someone help me with this ASAP!

Someone help me with this ASAP!

Answers

Answer:

48.1 somewhere around 36 and 57

Step-by-step explanation:

Answer:

36-57

Step-by-step explanation:

18.50 x 2.6 = 48.10, which is between those two numbers

So I’m working on missing assignments and my math teacher gives us review sheets.

Well it’s old material I cannot remember and I have an answer key for the answer but I don’t know how to do the work!


I have to find the height of a cylinder only being given the volume and the radius. How would I go about finding the height?

Answers

Answer: Formula for calculating the height of a cylinder:

V=πr^2h

Step-by-step explanation:

If you were given the volume and the radius then the formula you would use is V=πr^2h.

For example lets say your volume was 602.88 and your radius was 4.

To solve you would simply plug in your values.

602.88=π(4)^2h

since π is the equivalent to 3.14 your equation will now look like:

602.88=(3.14)(4)^2h

Then you begin solving!

602.88=(3.14)(16)h

602.88=50.24h

h=12

Imagine you just did a survey of your friends. What type of graph would have the title, "Favorite Type of Movie."

line graph
stem-and-leaf plot
pictograph
bar graph

Answers

Answer: Bar graph

Explanation: a bar graph would show how many people like the same movie or different movies, it’ll show the votes.
bar graph because you get certain opinions from every movie compared to the other graphs

help!
1.) a + 7 when a = 3
a + 7 = 3 +7 = ____
2.) y ÷ 3 when y = 6
y ÷ 3 = ____÷ 3 = ____
3.) n - 5 when n = 15
n - 5 = ____ - 5 = ____

Answers

1. 10
2. 6, 2
3. 15, 10

Which part of this box plot includes about 50% of the data?
A.
There is not enough information to tell.
B.
The box, from 44 to 52
C.
The lower whisker, from 34 to 44
D.
The upper whisker, from 52 to 59

Which part of this box plot includes about 50% of the data?A.There is not enough information to tell.B.The

Answers

Answer:

B

Step-by-step explanation: The box represents the middle 50% of the data, with the bottom and top of the box representing the first and third quartiles, respectively. The line inside the box represents the median.

The whiskers extend from the box to show the range of the data, excluding outliers. Outliers are typically shown as individual points outside the whiskers.

Based on this information, we can see that the box in the box plot represents the middle 50% of the data. Therefore, the answer is B. The box, from 44 to 52, includes about 50% of the data.

B the box, from 44 to 52

mr. Smith is paid $9.50 per hour for fixing watches. Write an expression for the amount of money Mr. Smith earns in h hours.
a)9.5+h
b)9.5h
c)h+1
d)h divided by 9.5


in addition to his hourly rate, Mr. Smith is paid $2.20 for each watch he fixes. Write an expression for his income if he fixes r watches per hour.
a)2.2r-9.5
b)9.5r+2.2
c)19h
d)2.2r+9.5h

Answers

b) 9.5h & d) 2.2r + 9.5h

Solve the given equation.



z - 42 = 7

Answers

7 + 42 = 49 so it’s 49

Answer:

z = 49

Step-by-step explanation:

z - 42 = 7

z - 42 = 7

   +42  +42

z = 49

1. add 42 to both sides (adding because its - 42)

2. that leaves us with 7+42 = 49 so z=49

to check your answer u can always plug in 49.

49 - 42 = 7

yup. 49-42 does equal 7.

what value of x makes this equation true -(x+3)=2(x-3)

A. 0
B. 1
C. 2
D. 3

Answers

Answer:

To solve the equation -(x + 3) = 2(x - 3) for x, we can follow these steps:

Step 1: Distribute the negative sign on the left side of the equation:

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

=> -x - 3 = 2(x - 3) (using the distributive property)

Step 2: Expand the right side of the equation:

-x - 3 = 2x - 6

Step 3: Add x to both sides of the equation to isolate the x term on one side:

-x + x - 3 = 2x + x - 6

=> -3 = 3x - 6

Step 4: Add 6 to both sides of the equation:

-3 + 6 = 3x - 6 + 6

=> 3 = 3x

Step 5: Divide both sides of the equation by 3 to solve for x:

3/3 = 3x/3

=> 1 = x

So, the correct value of x that makes the equation true is B. 1.

PLEASE MARK BRAILYISTT :D

Answer:

B, one

Step-by-step explanation:

In order to solve this, you can solve the equation. First, you can use the distributive property to get -x-3=2x-6. If you make the variables on one side and the constants on the other, you will get -3x-3=-6. This can further simplify to -3x=-6. Divide both sides by -3 to get that x=1. Then, the correct answer is B.

A manager needs to rope off a rectangular section for a private party. The length of the section must be 7.6 ,meters. The manager can use no more than 28 meter s of rope. What inequality could you use to find th possible width, w, of the roped-off section?

Answers

Answer:

B

Step-by-step explanation:

Because I've done this test before it's just I remember it being B.

Answer:
W< 6.4 m

Step-by-step explanation:
we know that
The perimeter of a rectangle is equal to
P=2(L+W)

we know that
L=7.6 m

P < 28 m

substitute
2(7.6 + W) < 28

solve for W
(7.6 + W) <14

W <14 - 7.6

W< 6.1 m

What are the possible shoe sizes of the players on Justin's team?

What are the possible shoe sizes of the players on Justin's team?

Answers

the answer is 9 1/2 your welcome btw
9 1/2 is the answer

George wants to buy a bike that costs 200 dollars. He decides to do odd jobs to earn the money for the bike. In June, George mowed 10 lawns, washed 8 cars, and waxed 6 cars. How much more money does he need to buy the bike?

a mathematical calculation

Answers

Answer:

Step-by-step explanation: 65 did I tell me that you are or if you text nothing else to do

Sisisisiaisisisisissisisiridud

the food bank has 67 shelving units for canned food. Each unit holds 895 can that weigh approximately 784 pounds. If all the units are full,how many cans are stored at the food bank

Answers

Answer:

96 cans

Step-by-step explanation:

give brainliest bub

I think it may be 96 cans
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