Mathematics Middle School

you have solved a system of equations by substitution and got one solution. how were you able to determine it was one solution?

Answers

Answer 1

Answer:

Step-by-step explanation:

https://brainly.com/question/22157981

Related Questions

In 2015, a person working in the United States paid 10%income tax for income up to $9225. Income between $9226 and $37,450 was taxed at 15%.
Suppose John earns $9225. How much of his earnings does John take home after taxes?

Answers

answer:  he will take $8302.5 home with him!!

8302.5 is the answer AHHA

Please please find the area for this polygon!

Answers

Answer:

508

Step-by-step explanation:

28*16= 448

6*6= 36

4*6= 24

448+36+24= 508

In order to find the area of a polygon, all you have to do is follow the formula: area = 1/2 x perimeter c apothem. To sum it together, perimeter = the sum of the lengths of all the sides. So add 6, 16, 16, 6, 4, 6, 28, and 18! And then you have 100! Then multiply it by 1/2! So your answer should be 50. Please consider brainliest.

ASAP IT HAS TO BE DONE BY 5:00pm!!!

Answers

Ok I will help you but can you tell me how to ha so a tutor

I need help in a minute please

Answers

Answer:

31.4 im pretty sure

Step-by-step explanation:

I think the answer is also 31.4 am sorry if it’s wrong

Brainly plz help only three questions and don't answer for point kinda rude

Answers

Answer:

look down

Step-by-step explanation:

(8) no because 3.5*6.5=22.75 and that is over 20 square feet

(9) 34-19-7 * 17/2 = 17*17/2=144.5cm^2

(10) 4*6/2=12 so 1 can but if we are talking technical here it is 3/25

The questions are a bit broad so these might be incorrect

Question 1.................

Answers

Answer:

123.5  tho u might wanna recheck

Step-by-step explanation:

I think 123.5 I am not 100% sure though

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

1. The original cost of an item is $64 but you have to pay $78.08. What is the percent markup.?

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

Answer: for the first one it is 22 percent

Step-by-step explanation: first I found out that 14.08 is In-between 64 and 78.08 . Then I devided 14.08 by 64 so I got 0.22 then i made that a percentage by multiplying it by 10. So the answer is 22 percent. Please mark me brainiest.

I did it on the other one but here is the full explanation

The second one is $25 because 23.36 times 7% equals 1.36 then add 23.36 and 1.36 and you get $25

Can someone Solve this for me real quick?
-8( x + 1 ) + 2x = -32

solve for x

Answers

-8x-8+2X= -32
-6x= -32+8
-6x= -24 multiply both sides by -1
6x=24
X=4

HELP ASAP WILL GIVE BRAINLIEST! ANSWER ALL AND TELL ME WHAT ANSWER FOR WHAT QUESTION OR YOU WILL GET REPORTED.

Answers

Answer: 12 cm

Step-by-step explanation:

7. 3cm
8. B
9. D
10. 3.38 or 36
Sorry if they’re wrong I did it supper fast

Now can you help meeeeeeeee

Answers

Answer: 1-27 2-8  3-9  4-32

Step-by-step explanation:

8 x4 = 32 and 9x3 =27

Is the expression 6(2d+ 4f) - 3f equivalent to the expression 8d+ 28f +4d -7f?
Explain your answer.
will give brainiest

Answers

no it isn’t equivalent
I don’t know what to say because this is hard for me

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.

What is the diameter of a circle with radius 8.6 cm?

Answers

Answer:

17.2 cm

Step-by-step explanation:

Multiply the radius by 2 and you always have the diameter

divide the diameter by 2 for the radius

multiply the diameter by 3.14 or pi for the circumference

17.2 bcs by using the formula d=2r

What is the lateral Surface Area rounded to the nearest hundredth?

Answers

Pretty sure it’s 109.96

Answer:

109.96

Step-by-step explanation:

which has the lowest iqr

Answers

Group A is the answer

Answer:

B Group A has the lovvest IQR

I'll give anyone a brainlest if the first person answers it

Answers

Answer:

It's either y=1/2x or y=2x

Step-by-step explanation:

Have a wonderful night!!!!

Please help will mark brainliest! random answers will be reported

Answers

Answer:

65°

Step-by-step explanation:

the angle of a straight line has to add up to 180°

if it doesn't, it's not a straight line

115° and x are supplementary angles

meaning we know they have to add up to 180°

so simply subtract

180- 115 =

65°

you can check work by adding

115+65= 180

Answer: 65

180-115=65

Step-by-step explanation:

A straight line is always 180 so I subtracted 115 from 180.

Have a nice day. :-)

Plz answer I need a lot of help as soon as possible.

Answers

Answer:

your answer is a i think sorry if im wrong

Step-by-step explanation:

Plz help me!!!!!!!!!!!

Answers

Answer:

1. B

2.D

3.A

4.C

Step-by-step explanation:

Brainlist plz

1=94 square inches
2=96 square inches
3=76 square inches
4=75 square inches

Use the method of your choice to determine the following probability.

Drawing three twos in a row from a standard deck of cards when the drawn card is not returned to the deck each time.

Answers

Can you please explain?

4/52 x 3/51 x 2/50 there ya go

I NEED HELP ASAP !! Determine how the next term in each sequence can be found. Then find the next to terms in the sequence.

Answers

Answer:

Add 2.4 each time to find the next terms

Next Terms

11.1, 13.5, 15.9

Step-by-step explanation:

8.7 + 2.4  = 11.1

11.1 + 2.4 = 13.5

13.5 + 2.4 = 15.9

Answer:

They are adding 2.4, the next term would be 11.1

Step-by-step explanation:

adding 2.4 would get this answer

who ever gets it first will get a brainlest

Answers

Answer:

I am pretty sure it is 1/5

it’s 5 because it’s 5 baby rabbits to one mother, which would be 5/1 and simplifies to 5.

I need help with my little brothers homework?

Answers

I only did the first part but maybe later I will solve the rest too. If there are any errors but tell me so I can update the pic.
2. There is 10 different strings
3. I think you need to draw out the string lengths and then your done :)

help please please please please

Answers

Answer:

H (20) = E

380

Step-by-step explanation:

So, Rana is trying to multiply her hours with her earnings to get the product, that's where the variable E is. H stands for hours, and so you will multiply it by 20 because that's how much she gets per hour.

-Junkerss

edit: yes im the original person who wrote this answer if anyone is c & p it.

I tried my best so good luck

PLEASE ANSWER!!!!!!
The semicircle below has a diameter of 20. Find the area of the blue region.

Answers

Answer:

61

Step-by-step explanation:

Use the area of semicircle minus the area of the triangle. Area of the semicircle is 10^2 * pi / 2 = 50 pi, the area of the triangle is 12*16/ 2 = 96. The the area for the blue part is 50 pi - 96 = 61.07963268 or 61.

If it is helpful, plz give me Brainliest.

Answer:

50pi - 96

Step-by-step explanation:

The radius of the semicircle is 10, so the area of the entire semicircle is 1.2*10^2 pi = 50pi

The white triangle has an area of 1/2*12*16 = 96 so subtracting it shows that the blue area is 50pi-96

What scale factor was applied to the first rectangle to get the resulting image?

Enter your answer as a decimal in the box.

Answers

Answer:

.2

Step-by-step explanation:

If you multiply 2.5 x .2 you get .5 meaning .2 is the scale factor

Answer: 0.2

Step-by-step explanation: All you got to do is multiply the rectangle with 2.5 by 0.2 to get the scale factor.

WILL GIVE BRAINLY TO CORRECT ANSWERS

Someone tell me where each one belongs

Answers

A- false
B-false
C-true
D-true
E-false
F-false
G-true
H-true

Hope this helps

Answer:

A=false

b= false

c=true

d= true

e=false

f=true

g=true

H=true

Step-by-step explanation:   IM NOT SURE ABOUT E OR H

ANSWER FAST BC IM GIVING BRAINLIEST

Answers

Answer:

D

Step-by-step explanation:

Answer:

I believe the answer is 16 or D.

Step-by-step explanation:

Range is the difference between the smallest and largest number. and since the box and whisker plot is at 3 and 19, 19-3= 16.

I hope this is right, i'm sorry in advance if it's incorrect

what is the solution for the inequality x-40>20​

Answers

X-40 remains the same

Help?
Solve the equation, −5x = −30 Then graph the solution on the number line.

Answers

Answer:

x = 6

Step-by-step explanation:

-5*6 will equal -30

Answer:

blocked pic

Step-by-step explanation:

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