Mathematics Middle School

Solving Equations and Systems of Equations
Without solving the systems, explain why the following systems must have the same solution.
System (i): 4x - 5y = 13
3x+6y=11
System (ii): 8x – 10y = 26
X – 11y = 2

Answers

Answer 1

Answer:

Because they are equal

Step-by-step explanation:

Answer 2
Guy above me is in fact completely correct. I suggest taking his answer.

Related Questions

You move up 1 unit and down 9 units. You end at (0, -5). Where did you start?

Answers

Answer:

(8,-5)

Step-by-step explanation:

Answer:

(0,3)

Step-by-step explanation:

The x value in this problem is not affected since it isn't moving to the left or right, so let's focus on y.

To find out where you began, do the opposite of the command (for example instead of going down go up)

-5+9=4  4-1=3

y=3

To check the answer start at 3 then go down 9 units (-6) then go up a unit (-5)

Hope this makes sense/helps!

Can someone answer this? I'm really confused

Answers

área of 1= 1/2 x b x L
área of 2= 6x4=24
área of 3= 5x6=30
área of 4= 3x6=18
área of 5= 1/2x3x4=6
total surface area would be =6+24+30+18+6= 84cm^2

Answer:

For A

Step-by-step explanation:

(right angle)triangular prism

i need help with these

Answers

For the first image it’s the second one down, y = 1/2000 because 6 divided by 12,000 is 2000.

Answer:

1.d

2.B i think because it does not go to 0,0

3.d

4.C

5.C

Step-by-step explanation:

What is the length of the hypotenuse of the triangle?

Answers

Step-by-step explanation:

Hey there!

Here;

ABC is a Right angled triangle.

Taking reference angle as angleA.

Now;

Hypotenuse (h) = AB

Perpendicular (BC)= 24 ft.

Base(AC)= 10 ft.

Now, Using Pythagoras relation;

[tex]h = \sqrt{ {p}^{2} + {b}^{2} } [/tex]

Put all values.

[tex]h = \sqrt{ {24}^{2} + {10}^{2} } [/tex]

Simplify it.

[tex]h = \sqrt{576 + 100} [/tex]

[tex]h = \sqrt{676} [/tex]

Therefore, h= 26ft.

ANS: OPTION A.

Hope it helps....

Answer:

A. 26ft

Step-by-step explanation:

h= 26ft

When you answer this please show your work I

Answers

Answer:

wait the whole thing or just one question? if one question please tell me which one! thanks!

Step-by-step explanation:

Answer:

,

Step-by-step explanation:

Brandon has an action figure collection. He keeps 178 of the action figures on his wall, which is 89% of his entire collection. What is the total number of action figures in Brandon's collection?

Answers

Answer:

200 action figures

Step-by-step explanation:

178/89=2 which is 1% of the whole collection. 2*100=200

Answer:

200 action figures

Step-by-step explanation:

Someone help me with this ASAP!

Answers

Answer:

12/15, $0.90, 375, 4,800, 2 cups of water to 8 cups of flour

Step-by-step explanation:

Step-by-step explanation:

2)12/15

3)

[tex]4.50 \div 5 = 0.90[/tex]

4)

[tex]30 \times 250 = 7500[/tex]

[tex]7500 \div 20 = 375[/tex]

5)

[tex]3000 \times 8 = 24000[/tex]

[tex]24000 \div 5 = 4800[/tex]

6)2 cups of water and to 8 cup of flour

What improper fraction is the same as 12 3/4?
A) 51/4
B) 12/4
C) 123/4
D) 48/4

Answers

51/4 because you multiply 12*4 which is 48 and add 3 so you get 51. You keep the denominator so you should get 51/4.

Answer:

A

Step-by-step explanation:

Convert the mixed number in the question to a improper fraction and cross multiply to see if they equal the same

Use Morgan's strategy of working backwards to find the original number.

The table below has been started for you.

Answers

Answer:

x = 5

Step-by-step explanation:

working backwards means that you take the final product then reverse every step you've done to it to receive the starting number.

((29+10)/3)-8 = (39/3)-8 = 13-8 = 5

please double check and hope this helped!

welcome to baldys basics answer below :P

(1.) 2 x 7 =

(2.) 4 x 4 =

(3.) dnfibxni&*%(#&JGFTVYU

easy right? now answer >:D
if you get it wrong you have to......... eh... punish yourself :/

Answers

Answer:

1) 14

2) 16

3) uhhh uh uh uh uh- *aggressive hyperventilating*

Step-by-step explanation:

Change the mixed number 14 2/3 to an improper fraction.

Answers

Answer:

44/3_____________________

Answer:

44/3

Step-by-step explanation:

3 x 14 is 42 + 2 is 44

so 44/3

Which number line correctly represents the irrational numbers listed below?



-\sqrt{6}−
6
​
\sqrt{2}
2
​
-\sqrt{79}−
79
​
-\sqrt{32}−
32
​
\sqrt{57}
57
​ plzz helpp ill give brainlyest

Answers

It is 6..................
I think it is 6 :) sorry if wrong doe

Plz help me someone
I need to know how you got that answer too plz and thank you!!

Answers

Answer:

D. y=2x

Step-by-step explanation:

I used desmos graphing calculator.

D yx is the answer please give me a thanks

what is 85 x 98 ? woooooooooooooo

Answers

Answer:

8330

Step-by-step explanation:

Answer:

8330

I belive so-

can someone please explain how to answer this quickly

Answers

Answer:

x=4,y=6

Step-by-step explanation:

Answer:
2x^3y (^ is signaling 3 is an exponent)

Explanation:
The fraction set up is basically subtracting 4x^3y^4 from 2y^3.

Subtract 4 from 2 and you will get 2 which will leave you with 2x^3y^4.

Now subtract the y^4 from y^3. You will end up with y^1 but you write it as y signaling its by itself (or is a 1).

You end up with 2x^3y.

if you have 1200 cents from selling lemonade then how many $'s do you have?

Answers

Answer:

12 dolars

Step-by-step explanation:

Answer:

$11.00

Step-by-step explanation:

I give 23 points!!


The distance between two towns is 120 kilometers. There are approximately 8 kilometers in 5 miles. Which measurement is closest to the number of miles between these two towns?

Please explain well bc I have a test over proportion tomorrow.

Here are the options:

Thanks!

Answers

Answer:

75 miles

Step-by-step explanation:

8 × blank how many times does. 8 go into 120 it goes in 15 times so now we got 15 what is 15×5 because. 8 km is 5m

Mr. Hernandez opened a flower shop. He took a random survey by asking every 5th customer to find out their favorite flower. Who is the sample?

all the customers
every 5th customer
all the flowers
all the people in the town

Answers

every 5th costumer i think

Answer:

sample: every 5th customer

Hope this helps!!!

May someone help I will give brainliest and the math is slope

Answers

Answer:

The peppers

Step-by-step explanation:

The line is steeper (steeper slope)

Orlando buys a shirt for $15 and a pair of jeans for $32.50.If the sales tax is 8%,what is the total price Orlando pays for the items.
F. $47.88
G. $43.70
H.$51.30
J.$85.50

Answers

15 + $32.50 + 8% = $51.30

15 + 32.50 = 47.50

8% × 47.50 = 3.80

47.50 + 3.80 = 51.30
First, add 15 and 32.50 to get the total price. This should equal 47.5. Then, proceed to multiply by .08, because this represents 8%, which is the tax. You should get 3.8. That is the tax. Add the total and the tax, which is 47.5 plus 3.8, which equals 51.3. H is the correct answer.

Which of the following choices best describes the expression 2/3(3/4x − 3/2)
Question 2 options:

equivalent to 12x − 1

equivalent to x − 12

not equivalent to 12x − 1 or x − 12

Answers

Answer:

third option

Step-by-step explanation:

The most logical

The last one, not equivalent to 12x-1 or x -12

Jennifer thinks the angles below are not supplementary because they are a pair of non-adjacent angles. Is Jennifer correct? Explain in a minimum of 2-3 sentences using lesson vocabulary

Answers

Answer:

do you have multiple choices

Step-by-step explanation:

Find the value of x that makes the equation true.
2x + 3 = 20

A. x= 17/2
B. x= 5
C. x= 10
D. x= 2/17

Answers

Answer:

A. x = 17/2

Step-by-step explanation:

2x+3=20

to find the value of x, isolate the variable!

1. Subtract 3 from each side of the equation

2x + 3 - 3 = 20 - 3

[+3-3 is 0 so we can take that out; 20-3=17]

2x = 17

2. Divide each side by 2

2x/2 = 17/2

[2x/2 = 2/2*x = 1*x = x]

x = 17/2

hope this helped n happy mathing lmfaldsfk

I will give brainliest

Answers

I would say the answers to your questions are
8.) 40+18.25x > 124+7.75x X=9
9.) 72.6+1.3x ≥ 80.4-1.82x X=3
Just plug in the numbers for X if you need the finished equation rather than needing what X equals

You have a coupon for 10% off the sale price of a surfboard. Which is the better buy? Explain your reasoning.


● 40% off the regular price
● 30% off the regular price and then 10% off the sale price
40% of $150 = ___, so the sale price is ___
30% of $150 = ___, so the sale price is ___
10% of that sale price is ___,so after using the coupon, the sale price is ___

Answers

Answer:

* 60 -$60 <- answer

* 45- $45 <- answer

94.5- $94.50 <- answer

Step-by-step explanation:

40%= 0.4 ×150=60

30%=0.3×150=45

60 +45= 105

(105*10)/100= 10.50

105-10.50=$94.50 <- answer

Please answer soon! Thanks beforehand!
Ohm's law states that V=IR for a simple circuit, where V is the total voltage, I is the amount of current running through the resistor and R is the resistance of the resistor. If I=40 amperes when R=3 ohms, find the amount of current (in amperes) when the resistor has a resistance of 20 ohms. Assume voltage remains constant.

Answers

I’m not getting the question your asking

anybody, please help me I don't understand this at all how do we find hypotenuse adjacent and the opposite side with only one angle the angle I have is 20 degrees but I don't know anything I don't understand it

Answers

Obtuse is anything above 90 degrees
Acute is anything below 90 degrees
A Right triangle is 90 degrees

i need help please ??

Answers

Answer with step-by-step explanation:

Equation: x × 4 = y

This equation is true because if you look at the graph, multiply 4 by each x length and you will get the y length.

Hope this helped!

Answer:

×4

Step-by-step explanation:

you can multiply 6 ×_=24 the blank is 4 because 6 × 4 s = 24

9 ×__ =36 and its still four because 9 x 4 =36

and 15 ×__ is =60 because 15 × 4 = 60

×

HELPP Me With this question

Answers

Answer:

Line CB= undefined, line CD= zero, line DA= undefined, line BA= -2/3

Step-by-step explanation:

Hope is correct i did it all in my head

Line cb is undefined

What is the slope and y-intercept for the following equation 5y-2x=15

Answers

Answer: y=3+2/5x

Step-by-step explanation:

The slope is 2/5 and y intercept is (0,3)
Other Questions
What two areas of the globe had the same type of structures beingbuilt around the same time, but were not connected? A dolphin can travel 30 miles in 2 hours. What is the dolphin's speed (Remembers = d+t) here is the rest you could help me in any way CDF Appliances has assembly plants in Atlanta and Fort Worth where it produces a variety of kitchen appliances, including a 12-cup coffee maker and a cappuccino machine. In each hour at the Atlanta plant, 160 of the coffee makers and 200 of the cappuccino machines can be assembled, and the hourly cost is $600. In each hour at the Fort Worth plant, 800 of the coffee makers and 200 of the cappuccino machines can be assembled, and the hourly cost is $2400. CDF Appliances expects orders each week for at least 80,000 of the coffee makers and at least 28,000 of the cappuccino machines. How many hours per week should each plant be operated in order to provide inventory for the orders at minimum cost what the midpoint of 200 and 300 At MLK Middle School, enrollment increased from 320 students in 2019 to 750 students in 2020 after the pandemic. What is the percent increase in enrollment? You are babysitting for your younger cousins. Give them two formal commands in Spanish. One has to be affirmative and one negative. Does anyone speak Spanish? I need help with this please! Thank you :) (-9x-3)+(-3+2x) Why did wealthy slave owners view Nathan Bedford Forrest as ungentlemanly Hurry plz what are each angles 2. A person standing atthe edge of a seasidecliff kicks a stone overthe edge with a speed of18 m/s. The cliff is 52 mabove the waters surface, as shown at right.How long does it takefor the stone to fall tothe water? With whatspeed does it strike thewater? Choose the correct answer to fill in the blank:vacation was way too short. A. There B. Their C. They're 1. What are some specific expectations placed on many Chinese American teenagers? Describe their situation using the terms: stereotype, cultural norm, sanction, and value/belief. Rewrite the following sentence correctly using colons and/or semicolons.I bought my mom a couple of presents for her birthday perfume and a new sweater. 14:6 divided by 5 ( the 14:6 is a ration ) the steps of historical inquiry include asking questions, collecting evidence and who all explored the Mississippi. A scale drawing of a playground is shown below.PLAYGROUND2.5 in.KEY1 in. = 40 ft.3 in.1 in.4.5 in.Using this scale, what is the area, in square feet, of the playground?540 square feet450 square feet440 square feet380 square feet The witchcraft trials that took place in Salem, Massachusetts in 1692 and 1693 have raised many questions. Until now, we have had few answers to explain the actions taken by the Salem community. Now that you have analyzed four major theories that help explain what happened, we need you to submit a report that shares your thoughts on what caused this unfortunate event in U.S. history.