Mathematics Middle School

Jay simplified the expression 3×(3+12÷3)−4.

For his first step, he added 3+12 to get 15.

What was Jay’s error? Find the correct answer.

Answers

Answer 1

Answer:

8

Step-by-step explanation:

Answer 2

Answer:

he should have first preformed oprations in the pratheses so he should have done (3+12/3) first to get 3*(3+4)-4 then do (3+4) and have 3*7-4 next he should do 3*7 and get 21-4 do that and get the answer 17

Step-by-step explanation:

Related Questions

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

Heyy It's me again! I hope I can help you with this question too!

Answer:

Im pretty sure it's like 5 or 6 ft

Step-by-step explanation:

sry if its not right

Answer: 4.5 ft

Step-by-step explanation:

21-16.5=4.5

brainliest please? ^^

What value of x makes this equation true? HELP ASAP I GOTTA TURN THIS HOMEWORK I N PLZ PLZ HELP

Answers

Answer: x =-1

Step-by-step explanation:

4x-18=7x-15

4x-7x=-15+18

-3x=3 , x=-1 since 3/-3=x

Your answer would be -1

please do this thank you will give brain liest if correct..

Answers

The easiest thing to do here is to split into two right triangles. The split will occur at x=1.

A= (base times height) / 2

Height of both is 3
Base of left is 6
Base of right is 3

(6*3)/2 = 9
(3*3)/2 = 4.5

Now, add together.

9 + 4.5 = 13.5 sq units

Answer:

9 + 4.5 = 13.5 sq units

Step-by-step explanation:

This morning, Rita's car had 18.12 gallons of fuel. Now, 4.7 gallons are left. How much fuel did Rita use?

Answers

13.42 is left for Rita to use

may someone please help me understand something in class? its theoretical and experimental probability basically just probability in a whole and I can’t understand. I don’t need the definition I just want someone to make me understand in a simple way like a tutor, but anyways please help me understand this. Examples would work, anything. Just help me understand. Thanks anyways.

Answers

Experimental probability is the results of an experiment, let's say for the sake of an example marbles in a bag. Experimental probability would be drawing marbles out of the bag and recording the results. Theoretical probability is calculating the probability of it happening, not actually going out and experimenting.

hope this helped.

hello, if u can then please help me

Answers

Answer:

Step-by-step explanation:

1) 8 * (9+1) = 80 / 2^2 = 80/4 = 20

2) (5)^2 - 15 = 25-15 = 10

3) 28-3(4) + 9 = 28-12+9 = 25

Answer:

1. 20

2. 10

3. 25

Step-by-step explanation:

I am not the best at these, so I did them all on ma th way. Hope you don't mind...

is 0.35 closer to 0, 0.5, or 1?

Answers

Answer:

0.5

Step-by-step explanation:

0.35 is 0.15 away from 0.5

0.35 is 0.35 away from 0

0.35 is 0.65 away from 1

Please help this is worth 15 points! Answer the equation in y=mx+b from!

Answers

Y=-30x+60
Pretty sure that’s right

I NEED HELP ASAP Joe is purchasing a new cell phone plan and is trying to decide between two different options.
Plan #1:
$20 per month base fee
$0.10 per minute
Plan #2:
$10 per month base fee
$0.15 per minute
a. Last month, Joe spent 160 minutes talking on the phone. If he expects to talk this much next month, which plan should he go with?

b. Joe decided to go with Plan #1. If his total bill for the next month was $25.40, how many minutes did he spend talking on the phone?

Answers

Answer:

A.

Plan 2:

2 = 34

B.

54

Answer:A- plan A=34

2=34

Step-by-step explanation:

B=54    hope it helped have a good day!

Choose Yes or No to tell if the fraction 3/5 will make each equation true.
7/20 + 3/5 = 19/20 (yes/no)
3/5 + 3/10 = 3/15 (yes/no)
1/2 + 2/3 = 3/5 (yes/no)
1/10 + 1/2 = 3/5 (yes/no)

Answers

yes
no
no
yes
i hope it helped.
Correct answers:
Yes
No
No
Yes

9h + 4 - 6h + 7 *
4 points

5r - 7r *
4 points
6g -5g + 3 - 7 *
3 points
7 + 5f - 3 *
4 points
7z + 8z *
4 points

Answers

1. 3h+11
2. -2r
3. g-4
4. 5f+4
5. 15z

I have a triangle: Angle A = 3x +28; Angle B = 5x +52; Angle C = 2x - 10: Solve for X

Answers

I have no clue if I even did this right but here’s my work. I don’t wanna get it wrong for you!
Answer: x=11


Explanation: The anglers in a triangle must all add to 180.

Therefore, we can use the equation 180=3x+28+5x+52+2x-10

Combing like terms gives us 180=10x+70

Solving for x gives us 11.

To check our work, we can plug in 11 for x.

3(11)+28+5(11)+52+2(11)-10=180.

Lamont purchased a sweater that was on sale for 25% off.
Which expression represents the amount that Lamont paid for the sweater if x represents the original price of the sweater?

Answers

y= x*0.025
hope this helps!!
The correct answer would be y=0.75x because 0.25x is how much money she saved while 0.75x is how much she still had to pay for the sweater

Is this table proportional or non proportional , How do you know?

Help
the best answer will get brainly

Answers

Ez
This is non-proportional
There are 3 ways to figure out if a table is proportional or not
The one i used in which if u make fractions like 2/24. They should be equal to another fraction taken from your table
2/24 simplified is 1/12 while 8/36 is 2/9.
So


NON-PROPOTIONAL
non-porpotional because the numbers don’t match

create a table of values for Jacksons situation described above
(Non proportional relationships)​

Answers

Answer:

5)0

6)15

7)30

8)45

9)60

10)75

[tex]\sqrt{225}[/tex]

bAD ANSWERS NO PLS :)

Answers

Answer:

15

Step-by-step explanation:

sqr root 225 = 15

15. you can also ask siri if you have an iphone!

help me please thank you sm

Answers

The answer is 160 candy bars
The answer is 160 candy bars because you divide 56 by 0.35

Hip hop music makes up 75% of Landon's music library. If he has downloaded 120 hip hop songs, how many songs does Landon have in his music library? (Explain your answer/show your work)

Answers

Answer: 160 songs.

Step-by-step explanation:

75% hip hop music   -    120 songs

100% all music          -     x songs

Let's write the proportion:

[tex]\dfrac{120}{75} =\dfrac{x}{100} \\\\75x=120 \cdot 100\\75x=12000\\75x : 75 = 12000 : 75\\x = 160[/tex]

Thus, Landon have 160 songs in his music library.

Giving brainliest!!!!!!!

Answers

Answer:

9

Step-by-step explanation:

The correct answer would be C. 21 cubic units

Explanation:

volume = length x width x height
volume = 4 x 1.5 x 3.5
volume = 21 cubic units

What is 55/5 extended long division?

Answers

Answer:

The answer is 11

I hope it helps ❤❤

Finding Circumference

Answers

Answer:

3

Step-by-step explanation:

[tex]16 \times 2 \times 3.14 = 100.48[/tex]

Answer:

100.48

Step-by-step explanation:

the formula for circumference is C = 2 (pi) r

2(3.14)(16)=100.48

PLEASE HELP AND ANSWER ONLY IF YOU KNOW
show your work

Answers

Answer:

food next month should be $59.08 (8% decrease)

Step-by-step explanation:

sorry if i am wrong

It’s 50.80

Hopes this helps :)

help plssssssssss i need some help

Answers

Answer:

it is a+2b, the one you have selected.

Step-by-step explanation:

I believe the answer is a+2b

Compare the graph of f to the graph of the parent function

Answers

diffrent angles kind of like an editing grid to move stuff

Giving brainliest!!!!!!!

Answers

I believe the correct answer is the last option D.

Explanation:

The volume is 2 1/4 because 1 1/2 times 1 1/2 times 1 = 2 1/4
The instructions then say that there is 8 half unit cubes for every one unit cube so you multiply 2 1/4 by 8 to get 18

I hope this helps :))

Answer:

A

Step-by-step explanation:

Steve made $ 125 mowing lawns. He gave 60% of his earnings to his mother. How much did Steve give to his mother? (if you answer this you need to show your work)

Answers

Answer:

50$

Step-by-step explanation:

60% = 0.6

100% = 1 - 0.6 = 0.4

0.4 * 125 = 50

Answer:

75

Step-by-step explanation:  go to calculator and type 60% x 124 and it will give you the answer 75 :)

Solve for x, check the image below

Answers

Maybe 6 i am not sure
x = 8 because the radius is 6. 6 + 4 is 10 so that is your hypotenuse. from there you can just use the pythagorean theorem.

!!!(URGENT)!!! What is the surface area of this figure

Answers

Answer:

36 inches

Step-by-step explanation:

if you unfold the triangular prism and find the area of each individual shape, all you have to do is add them up:

Area Of Rectangle = WL

Area Of Triangle = 1/2(HB)

5x2=10

4x2=8

3x2=6

(4x3)1/2=6x2=12

10+8=18+6=24+12=36

Instead of buying 3 white t-shirts for Bobby she purchased 5. How much was each shirt if the Gap sold them at 3 for $49.95. What does each shirt cost?

Answers

Answer:

The answer should be 16.65.

$16.65 I think cause you would do 49.95 dollars divided by 3 I think

A doctor replaces the fish tank in her office. Do the fish have more room to swim in the new tank? Find the volume of each tank to find out.


Rewrite the following expression using fractions.
4 • 1 1/2 • 2 1/2

Answers

4/1 • 3/2 • 5/2 is the correct answer
Other Questions
5. What additional information would allow you to concludethat WXYZ is a parallelogram?A. XY ZWC. WY ZWB. XW ZYD. ZXWY ZZYWLOL HEY PLS HELP What is the area of the figure?Enter your answer in the box.in2 HELP ME I WILL GIVE YOU BRAIN THING The rules an agency within the executive branch makes are called: 1A line has a slope of -1/2and a y-intercept of -2. plz help me i will give 14 points!!! Can we please please help Combine like terms(4x^2+6x+7)(8x^22x+6) Solve:(Vx + 2)(Vx - 2) = 0X= HELP HELP HELP HELP HELP Do all 5 please! Will give brainliest! DO NOT JUST WRITE SOMETHING RANDOM TO GET POINTS PLEASE. All camels are basically similar in structure. They have developed adaptations for coping with both heat and dehydration.Which of the following does not benefit the camel as a means of preventing dehydration?a.Camels can extract water from their solid wastes.b.Camels' ears are lined with fur to keep out sand and other blowing matter.c.Their kidneys are capable of concentrating urine to reduce water lossd.Camels are able to locate water in any environment. Please solve this. Nobody will solve it in the other categories and its due in 1 min. PLEASE PARAPHRASE THIS WILL MARK BRAINLIST PLEASE! PLEASE HELP I WIL MARK BRAINLIEST ANSWERImagine you are painting a series of towers built from cubes. You are going to paint only the exposed faces of the cubes. What is the independent variable? a. The number of corners on the cubes b. The number of exposed faces c. Amount of paint you'll need d. The number of stories of cubes 2x - 3y = -145x + 9y = -2 Someone who is malnourished and/or thin to the point of weaknesscould be considered emaciated.O TrueO False please help!!! Im very confused, giving brainleist are any of you in the 9th grade and good with math? 2 (x2 - 3) + x (x - 7) does 9/20 and 18/30 form a proportion