Mathematics Middle School

6. Julie is asked to solve the system below by elimination. Which of the following steps
would be the best way to begin?
2x + y = -3 ?
3x - 2y = 2

A. Multiply O by 2 and multiply by 3
B. Multiply by 2
C. Multiply O by 2
D. Multiply by 2 and multiply O by -2

Answers

Answer 1

Answer: A

Step-by-step explanation:

Answer 2

The best way to solve the system below by elimination is to multiply

2x + y = -3  by 2.

What is elimination method?

The elimination method is the process of eliminating one of the variables in the system of linear equations using the addition or subtraction methods in conjunction with multiplication or division of coefficients of the variables.

According to the question

Equations given

2x + y = -3 -------------------------- (1)

3x - 2y = 2 --------------------------(2)

Now, solving by applying elimination method

Case 1: solving for y , eliminate x

Multiplying equation (1) by 3 and equation (2 ) by 2

6x + 3y = -9

6x - 4y = 4  

now subtracting both we will get value of y then we can get x by substituting y in equation

Case 2:

solving for x , eliminating y

Multiply equation (1) by 2

4x + 2y = -6  ---------------------------- (3)

3x - 2y = 2 --------------------------(2)

now, adding both equation will give x value then we can get y by substituting x in equation

Hence, Multiply equation (1) by 2 will be best way .

To know more about elimination method here:

https://brainly.com/question/14619835

#SPJ2

Related Questions

What is the solution for t over 3 minus 45 equals negative 45?

Answers

Answer:

i think it’s t=0

Step-by-step explanation:

These are SIMILAR figures. Fill in the missing values for the angles and sides

Answers

Answer:

75 62 22 30 65 18

Step-by-step explanation:

Given that the figures are similar figures, then:

x and y in the Parallelograms:

x = 88

y = 118°

x, y, and z in the Hexagons:

x = 164°

y = 36

z = 33

x, y, and z in the Triangles:

x = 10

y = 21

z = 75°

What are Similar Figures?

Similar figures have pairs of angles that have the same degree measure, and the ratio of their corresponding sides are equal.

Given that the pairs of figures are similar, let's find the missing angles and sides as shown below:

Find x and y in the Parallelograms:

x/66 = 100/75

Cross multiply

x = (100 × 66)/75

x = 88

y = 118° (opposite angles of a parallelogram are congruent)

Find x, y, and z in the Hexagons:

x = 164° (congruent angles)

y/54 = 20/30

y = 36

22/z = 20/30

z = 33

Find  x, y, and z in the Triangles:

x/15 = 12/18

x = 10

14/y = 12/18

y = 21

z = 180 - 65 - 40 = 75°

Learn more about similar figures on:

https://brainly.com/question/4381215

the number 629 divided by the number c equals 17

Answers

Answer:

629/c=17

629=17c

Divide both sides by 17

c=37

Answer:

c=37

Step-by-step explanation:

PLEASE HELP ILL MARK BRAINLY IF YOU ANSWER THIS QUESTIONS RIGHT HELP ME PLEASE!!

1-Mack and Elin live at the same distance from school and walk to school every morning. The graphs show their distance from home over the same 30-minute period one morning until they arrived at school. Each interval on the graphs represents 10 minutes.

2-the graph shows the outside temperature over a 24-hour period. Which statement about the graph is true?

Answers

Answer:

Nvm, i didnt see it and mark the 1st one, 4th one, and 5th one.

For temp its the third one

can you help me plsssssssssss

Answers

Answer:

Im pretty sure its D because its the kids that arent eating the lunch

Step-by-step explanation:

Answer:

Its def. D because thats who the principle wants to know why they dont eat it.

Step-by-step explanation:

ASAP . . . . . will give brainliest

Answers

It will take her 8/10 so 8days
probably 8 days or so.

(IF SOMEONE ANSWERS CORRECTLY ILL MAKE A FREE 50 POINT POST AND GIE FIRST OUT OF 2 ANSWER BRAINLIEST!!!)
Order −3
4
, 3
8
, −11
8
, −1
2
from least to greatest. Which is correct?

A number line going from negative 1 and StartFraction 3 Over 8 EndFraction to StartFraction 3 Over 8 EndFraction in increments of StartFraction 1 Over 8 EndFraction.
Negative 1 and StartFraction 1 Over 8 EndFraction, negative three-fourths, negative one-half, StartFraction 3 Over 8 EndFraction
Negative one-half, negative three-fourths, negative 1 and one-eighth, StartFraction 3 Over 8 EndFraction
StartFraction 3 Over 8 EndFraction, negative 1 and StartFraction 1 Over 8 EndFraction, Negative three-fourths, Negative one-half

Answers

Answer:

-11, -3, -1, 2, 4, 8, 8

That's the order they go in. I don't understand the second part though. Could you be a bit more clear?

Answer:

D and E

Step-by-step explanation:

There you go I hope u have a nice day.

At 10:00 a.m. the temperature is –3.4°F. The temperature increases 0.5°F each hour for the next 6 hours. If the temperature drops a total of 5.3°F over the following 3 hours, what is the temperature at 7:00 p.m.?

please give an explanation too!

Answers

Answer:

-3.4+3=-0.4   -0.4-5.3=-5.7     (-5.7F)

Step-by-step explanation:

Brainlist plz

Area of Composite Figures

Answers

Answer:

1) 147

2) 87[tex]m^{2}[/tex]  

Step-by-step explanation:

1) Area of triangle = × base length × height

= [tex]\frac{1}{2}[/tex] × 14 × 10

= 70 [tex]m^{2}[/tex]

Area of a semicircle = [tex]\frac{\pi r^{2} }{2}[/tex] ( r is the radius)

Radius = half of diameter = [tex]\frac{14}{2}[/tex] = 7m

Area of semicircle = [tex]\frac{\pi 7^{2} }{2} = \frac{\pi49 }{2}[/tex]

= 77[tex]m^{2}[/tex] ( Nearest whole number )

Total area = 77 + 70 = 147[tex]m^{2}[/tex]

2) Divide the shape into 2 rectangles

Area of a rectangle = length × width

Rectangle 1 = 7 × ( 3+3+5 )

= 7 × 11 = 77[tex]m^{2}[/tex]

Rectangle 2 = 2 × 5

= 10[tex]m^{2}[/tex]

Total Area = 77 + 10 = 87[tex]m^{2}[/tex]

Answer:

1) 147

2) 87

Step-by-step explanation:

Pls help explain this question to me for math

Picture 1. Q4
Picture 2. Q5
Picture 3. Q6
Picture 4. Q7

Answers

Just ask your teacher
Ask your teacher that’s wat a teacher is for

4 1/4 ÷ 1 1/2

Solve the problem. (Hint: simplify before you multiply) *

Answers

2 5/6 is the answer : )

Kasey and Jordan are counting calories while eating lunch in the school cafeteria. in one week, Kasey had 10 slices of pizza and 5 cups of fruit salad. Jordan had 6 slices of pizza and 7 cups of fruit salad. Kasey’s calorie count was 3070 and Jordan’s was 2522. How many calories are in a slice of pizza?

Answers

Answer:

222 calories from the pizza

Step-by-step explanation:

nandhini123-

Given:

slices of pizza ate by Kasey =10

cups of fruit salad by Kasey=  5

slices of pizza ate by Jordan = 6

cups of fruit salad by Jordan=  7

Kasey's calorie  count = 3070

Jordan calorie  count = 2522

To Find:

calories Jordan got from pizza =?

Solution:

Let the calorie of one slice of pizza be  x

and the  calorie of one cup of fruit salad be  y

According to the question, the equation that represents the Kasey's Scenario is

10x + 5y = 3070-------------------------------------(1)

Similarly the equation that represents the Jordan Scenario is

6x + 7y = 2522--------------------------------------(2)

multiply eq(1) by 6 we get

60x + 30y = 18420---------------------------------(3)

multiply eq(2) by 10 we get,

60x + 70y = 25220----------------------------------(4)

Subtracting eq (3) from (4) we get

 60x + 70y = 25220

 60x + 30y = 18420

 (-)        (-)        (-)

-----------------------------------

0x + 40y = 6800

---------------------------------

=>40 y = 6800

=>y =

=> y = 170

So calorie of one cup fruit salad is = 170 calories

substituting the y values in eq 1 we get

10x + 5(170) = 3070

10x + 850 = 3070

10x = 3070 - 850

10x = 2220

x =

x= 222

So calorie of one pizza slice = 222 calories

Now we know that  Jordan ate 6 slices of pizza

calories  Jordan get from pizza = number of pizza he ate  X calore per pizza slice

=> 6 x 222

=>1332 calories

Brainliset plz

Answer:

483 calories are in each slice

Step-by-step explanation:


1.
A season pass has 64 visits. If you purchase a season pass for Soak City, what is
the cost per entry, in dollars, for the same day entry? (show your work)

Answers

Step-by-step explanation:

52.22 this is because if you divide 2350 by the same day pass that is what you get

the. answer is 52.22

Please answer show all your work or tell me the steps
choose any question to do or do all of them i dont care

2. If sales tax rate is 7% how much would you pay for an item that is $23.36

3.If the sales tax rate is 8.25% how much would you pay for an item that is $24.00

4.Original value:140 New value:98 what is the percent change

5. an item priced $30.82 is on sale for a 15% off. What is the sale price of the item

6. if the sales tax rate is 7.6%, how much will you pay on a $330 item

7. a $129 item is marked up 20% how much is the markup

8.four friends go out to eat and their meal costs $86.50. The sales tax is 6.75% and they should tip the waiter 20% how much should each person pay to the nearest cent

9.original cost: $35 new cost: $38.22
what is the percent increase

Answers

#3 is $25.98 because first you multiply 24 by 8.25% which equal 1.98 and then add 24 and 1.98 which equal $25.98

which of the following expressions is positive for any value of a: a^2+4,(a+8)^2, 5a^2+2,a+13,(a-4)^2+4,(a+10)^2-1

Answers

Answer:

I am not sure this is a real math equation

Step-by-step explanation:

There is no way to answer this. No elimination or substitution method would solve this. Sorry.

In a card game, a player earns -5 points for each red card drawn. If the player has a score of -20, how many red cards has the player drawn?

answer choices
-100
-4
4
100

Answers

Answer:

4

Step-by-step explanation:

-20/-5=4

Hello you seem lost

-5 is -20 is what well it’s -100 and -4 and 4

Sorry I need points

I really need help! pls..... I will make brainlist if the answers are good and right.

Answers

Sorry only can do #6,8,13
6. c) 1 1/2 pt
8. c) 22 residents per square mile
13. c) 200 students
I have no idea it’s too difficult

What are the dimensions of the new room, in inches, on the blueprint? What will the dimensions of the new room be, in feet, in the new house?
in the attachment, the answers on the bottom are incorrect. please help me I do not understand what I am doing wrong.
info needed: q'(3.75,1.25) r'(8.75,1.25) s'(8.75,7.5) t'(3.75,7.5)
(48x,48y)

Answers

Answer:

Lay the proper scale next to the item on the drawing and take the measurement. The scale will translate for you. As an example, a 1/4 inch = 1 foot architect scale will have markings that increase by 1 foot every 1/4 inch; a 4 foot wall is represented by a 1-inch length, if measured with a conventional ruler.

Step-by-step explanation:

If a = 8, b = 4, and c = 10, what is a(b + c)?
A. 22
B. 112
C. 320
D. 2560

Answers

Answer:

B: 112

Step-by-step explanation:

8(4 + 10)

add 4 + 10 = 14

8 x 14 = 112

Mark brainliest please

Answer:

A(b + c) = 112

Step-by-step explanation: For this equation you rewrite the equation with the numbers in place of the variable. This would loook like 8(4 + 10). Next to follow pemdas we do parenthesis first, 4 + 10 = 14. Then you multiply 14 x 8 which is 112. I checked this on a calculator and on paper and both got the same answer.

Hope this helps.

WILL GIVE BRAINLY

Can someone tell me which property each belongs to?

Answers

A- distributive
B-commutative??
C-identity??
D-associative
E-zero product
F-commutative??
G- zero product
H-distributive??

I hope these are correct. Please let me know!!

Find the measure of the angle indicated -- Parallel Lines Cut By Transversal
HELP PLZ ASAP ASAP PLZ HELP

Answers

110 is correct!———
Thank you

i need help asap pleaseee

Answers

Bottom one is the answer
last one is the answer to ur questions ahha

A circle has a diameter of 10mm.
Find the circumference of the circle using 3 as the estimate of .
Find the circumference of the circle using 3.14 for .
Find the circumference of the circle using 3.14159 for .
What do you notice about the estimate used for and the circumference of the circle?

Answers

Th answer to the question is 20 mm hope this helps

I will give brainliest to whoever helps me with this question. Also, if you could please explain to me how you solved it I would appreciate it!

Answers

The volume of the cone is 120 pi cm3 in terms of pi.

The volume of the cone is 376.8 cm3 in terms of 3.14.

The reason why pi is more accurate is because it is an accurate prediction.
the answer is 120 in pi

three questions about areas of triangles

Answers

Answer:

How to find the area, how to find the high, and how to find the side.

Step-by-step explanation:

Yep that's all.

Lisa drinks 20 fl oz of water after she runs 1 mile. She wants to make a table to see how much water she will need to drink as she increases the number of miles she runs. What will the row look like for 5 miles?

Answers

Answer:

She will drink 100 fluid oz of water after 5 miles

Step-by-step explanation:

Answer:100fld oz after five miles

Step-by-step explanation:

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