A student solved the equation 2x+2=10 using algebra tiles. She incorrectly says the solution is 6 . Solve the equation. What mistake might the student have made?
Answers
Answer:
she added 2 instead of subtracting it. the answer is x=4
Step-by-step explanation:
10+2=12
12/2=6
Answer:
Step-by-step explanation:
2x+2=10 subtract 2 from each side
2x=8 divide each side by 2
x=4 is the correct solution.
Her error was most likely subtracting 2 from the left and adding 2 to the right
2x+2=10
2x=12
x=6
Related Questions
4. Find the value of x
Answers
Answer:
it’s 29.
Step-by-step explanation:
(3,12),(3, -17) Find the slope with work
Please help
Answers
Answer:
-43.68
Step-by-step explanation:
Answer:
Undefined slope
Step-by-step explanation:
(3,12), (3, -17)
m= (y2-y1)/(x2-x1)
m= (-17-12)/(3-3)
m= (-29)/0
m= Undefined slope
Because 0 is the denominator, the slope is undefined
PLEASE HELP ASAP WILL GIVE BRAINLIEST!!!! ANSWER ALL PLEASE!!! LOOK AT EACH PICTURE, NOT JUST THE FIRST ONE!
Answers
Answer: 12cm, B, D, 187.2
Step-by-step explanation:
help me plsss ths is ver confusing to me and i do not get it i dont want to get an f on this test........so can some one plss help me plssssssssssssZZZZZZZ
Answers
Answer:
see the answersStep-by-step explanation:
to understand thisyou need to know about:fractionlet's solve:to determine the length we have to divide 22 by 3let's do:
[tex] \frac{22}{3} \\ = 7 \frac{1}{3} \: feet \: [/tex]let's the pieces be p
according to the question
[tex] \sf 3p = 22 \\ [/tex][tex] \sf divide \: bot h \: sides \: by \: 3 : \\ \sf \frac{3p}{3} = \frac{22}{3} \\ p = 7\frac{1}{3} [/tex]You have a six-sided die. Set A contains all of the numbers less than 5. What numbers are contained in the complement of A?
Answers
Answer: 5, 6
Step-by-step explanation:
The universal set for the six-sided die is all the faces, or the numbers 1 through 6. When we get the complement of a set, we get everything outside of the set that is within the universal set.
At Raging River Sports, polyester-fill sleeping bags sell for $71. Down-fill sleeping bags sell for $145. In one week the store sold 18 sleeping bags for $1,455.
Let x represent the number of polyester-fill bags sold and let y represent the number of down-fill bags sold. Complete the system of equations that can be used to find the number of each type sold.
Answers
Answer:
71x + 145y = 1,455
x + y = 18
A car began a trip with a full tank of gas. During the first half of the trip, the car used 0.30 of the gas. During the last half of the trip, the car used 0.40 of the tank. What portion of a tank of gas is left when the trip is complete?
A. 1/4
B. 3/10
C. 50%
D. 0.75
Answers
Answer:
B
Step-by-step explanation:
Answer:
the answer would be B 3/10
Step-by-step explanation:
30 + 40= 70
100-70= 30
30/100
3/10
(No step by step needed)
Answers
Answer:
i cant see it
Step-by-step explanation:
I can't see any questions?
WILL GIVE BRAINLYEST
Please solve this i need it now
Answers
Answer:
6-2x-2y+2 z
7-x(a+b+c)
8-y(x²+x)
9- -2a-2b-2c
10- -3(x+y)
11-10a+1 0b
12-5( x+2y)
Step-by-step explanation:
Please help!
Find the area of the figure.
Answers
Explanation: I broke down the image into two rectangles I made the one on top 22 x 13 (I got 13 Because I took 31 and subtracted the bottom portion) my second rectangle was 18 x 9 to find the area of a rectangle you multiply the numbers
22x13=286 18x9=162
Then I added The answers together to get the total area
286+169=448
so total area=448
I wanna help my friend with their homework so please help!
Answers
Answer:
1. 3.79
2. 2.93
Step-by-step explanation:
I tried..
Problem 1
Answer: 2184----------------
Explanation:
1 basket has 1*24 = 24 apples
2 baskets have 2*24 = 48 apples
3 baskets have 3*24 = 72 apples
and so on.
So that must mean 91 baskets have 91*24 = 2184 apples total.
======================================================
Problem 2
Answer: 4920----------------
Explanation:
We'll use the same idea as problem 1. Think of each house as a basket. For each house, he got 41 pieces, so overall he got 120*41 = 4920 pieces of candy total
a store is having a sale when everything is 20% off. Before the sale, the store had 100 pairs of flipflops in stock. After selling some, they notice that 3/5 of the flipflops are blue. If the store has 39 blue flipflops, how many pairs of flipflops (any color) have they sold?
helpppp plzzzzzzzz its for homework
Answers
Answer: do you still need help comment ok
Step-by-step explanation:
Suppose translating quadrilateral ABCD by 8 units to the left and 8 units down results in a new quadrilateral A'B'C'D'. Which statements are correct?
I think its A,B,D and E
Answers
Answer:
B, D, E
Step-by-step explanation:
I got it correct on USATestPrep
Segment CD will be parallel to segment C'D'. And the area and perimeter of the shape will remain the same. Then the correct options are B, D, and E.
What is a transformation of a shape?The translation does not change the shape and size of the geometry. But changes the location.
Suppose translating quadrilateral ABCD by 8 units to the left and 8 units down results in a new quadrilateral A'B'C'D'.
In the translation, the position is changed only but the dimension of the shape does not change.
Segment CD will be parallel to segment C'D'. And the area and perimeter of the shape will remain the same. Then the correct options are B, D, and E.
More about the transformation of the shape link is given below.
https://brainly.com/question/27224339
#SPJ3
Can someone please help me with this?!
Answers
(a) 1,1 (b) 3,2 (c) 3,2 (d) 1,5
Answer:
(A) 1,1, (B) 3,2 (C) 3,2 (D) 1,5
Step-by-step explanation:
this answer is not copyright just to let you know
PLEASE HELP ME
the graph shows the outside temperature over a 24-hour period.
Which statement about the graph is true?
Answers
I really need help! pls..... I will make brainlist if the answers are good and right.
Answers
6. c) 1 1/2 pt
8. c) 22 residents per square mile
13. c) 200 students
Help with this math problem plz thx
Answers
Explanation: There’s three sections that aren’t green, out of five sections. So it’s 3/5.
Plsssssss help me this is a test question. 20 pts
Answers
Answer:
C.
Step-by-step explanation:
because it has the same angle as m<13
also if you wouldnt mind giving me brainliest, im just trying to rank up. only if u dont mind though
i don't understand this one plz help before sunday.(Thank may God bless you and back the blue)
Answers
Answer:
2/3(3/4x-3/2) = 1/2x-1
(2x+1) - (x+3/2) = x - 1/2
Step-by-step explanation:
1) Distribute 2/3 to both 3/4x and -3/2
2/3(3/4x) = 6/12x which can be simplified as 1/2x
2/3(-3/2) = -6/6 which simplifies to -1
2/3(3/4x-3/2) = 1/2x-1
2) (2x+1) - (x+3/2) combine like terms
2x-x = x
1 - 3/2= 1- 1 1/2 ( change 3/2 into an improper fraction. 2 goes into 3 one time with one left over. Place the “leftover” back on top of the original denominator of 2)
1- 1 1/2 = -1/2, so
(2x+1) - (x+3/2) = x - 1/2
Giving brainliest for answers to both questions :)
Answers
2. Write a problem that matches: Bob has 20 pogs. He keeps 4 for himself and then equally divides the rest among his 4 brothers.
3. How many stickers does Bob give his brothers in problem 2?
THIS IS PEMDAS
Answers
Answer:
20 minus 4 equals 16. 16 divided by 4 is 4
Bob gives 4 stickers to each of his brothers
I just noticed that you said PEMDAS sorry :|
Multiple Choice You decide to use a scale of 1 in.:8 ft to make a scale
drawing of your classroom. If the actual length of your classroom is
36 feet, what should the length of the classroom in the drawing be?
A. 1 in.
B. 4.5 in.
C. 36 in
D. 288 in.
Answers
Divide 36 by 8 and you have your answer
Answer:
i think its D if not D then C but do D :)
SORRRY! I JUST CHECKED MY wORK THE Answer is B
Johnny printed two maps of a walking trail near his home. The length of the walking trail on the first map is 8 cm. (THIS QUESTION HAS 3 PARTS)
Part A.) Choose a length between 5cm and 15cm for the walking trail on the second map: ________cm.
Part B.) Determine the scale factor from the first map to the second map. Show your work. It may help you to “draw” out the two maps and label the trails and their corresponding lengths. (2 points)
Scale factor =
Part C.) A landmark on the first map is a triangle with side lengths of 3 mm, 4 mm, and 5 mm. What are the side lengths of the triangle landmark on the second map? Show your work. It may help you to “draw” out the two maps and label the trails. (3 points)
Answers
Answer:
Scales are used on maps in the same way that they are used in plans.
A scale of 1 : 50 000 is used on many Ordnance Survey maps.
This means that 1 cm on the map represents an actual distance of 50 000 cm (or 500 m or 0.5 km).
Converting measurements on a map
We saw above that if a map has a scale of 1 : 50000, then 1 cm on the map is 50000 cm in real life.
(a) Imagine we have measured a distance as 3 cm on this map, and we want to find out how far this is in real life.
To work out the distance in real life, we need to multiply this length by 50000.
This gives 3 cm × 50000 = 150000 cm which is 1500 m or 1.5 km.
Alternatively, we could have just remembered that each 1 cm on the map is 0.5 km in real life.
Hence, 3 cm on the map must be 3 × 0.5 km = 1.5 km in real life.
(b) Now imagine we want to walk 4.5 km in real life, and we need to find out how far this is on the map.
To work out the distance on the map, we need to divide this length by 50000.
4.5 km = 4500 m = 450000 cm. Dividing 450000 cm by 50000 gives a distance on the map of 9 cm.
Alternatively, we could have just remembered that each 0.5 km in real life is 1 cm on the map.
If we divide 4.5 km by 0.5 km we get 9, so the distance on the map must be 9 cm.
I hope this helped, and Brainlyest plz
Write an equation that defines the function also only if you can please explain so I can get better or not
(Comment with no answer=reported)
Answers
So for this problem you are going to need to do an slope triangle (change in y over change in x). You need to just pick two random points if the rate is visibly consistent.
I’m using the points 0,20 2,5
-15
——
2
=-7.5
Hope this is right and if anyone sees this call me out if I’m wrong
Good luck
Please do all of them
Kim is x years old. Jordan is 7 years older than Kim. Four times Jordan’s age is equal to 200.
A) Write an equation that could be used to solve for Kim’s age, x.
B) How old is Kim?
C) How old is Jordan?
Answers
Answer:
A) An equation that could be used in this situation is 200 ÷ 4 + 7 = k (k= Kim’s age.)
B) Kim is 57
C) Jordan is 50 years old
Step-by-step explanation: this is true because if four times Jordan’s age is 200 then you take 200 and divide it by four. 200 ÷ 4 = 50 so that is Jordan’s age. Next, to find Kim’s age you just add 7.
Hope this helps
Will give branist if done correctly..it would really help me out.. Thank you in advance!
Instructions:
Search your home for a rectangular prism. Some examples are a cereal box, a CD case, or a coffee table. Measure your prism using appropriate units, such as inches, centimeters, or feet.
Complete the following. Show all work for calculations.
1. List the dimensions of your box. Be sure to include the units (in, cm, ft, etc.).
2. Describe the shape of the cross section when the box is cut parallel to the base.
3. What is the surface area of the box?
4. What is the surface area of the box if it is scaled up by a factor of 10?
5. What is the volume of the box?
6. What is the volume of the box if it is scaled down by a factor of $1/10$?
________________________________________
Answers
Answer:
I think that this question is too complex for you to be asking on brainly.
Step-by-step explanation:
What should you substitute for y in the second equation (bottom equation) in order to solve the system by the substitution method
Answers
I need help with this but please actually answer correctly!
Answers
Answer:
(4,1)
Step-by-step explanation:
line f should be the third turtle's line since it's the one that went the least far during the same time.
also is this desmos? i remember doing a desmos activity on turtle speeds and stuff
Answer: Can you put the phot or the document to help you please.
Please help with this I’ll give brainliest
Answers
*15 POINTS* Laura goes to a bank and opens a new account. She deposits $5,500. The bank pays 1.6% interest compounded annually on this account. Laura makes no additional deposits or withdrawals. Which amount is the closest to the account balance at the end of 4 years? $5,852.00 $5,860.53 $5,940.00 $5,954.31
Answers
Answer:
A) 5,852.00
Step-by-step explanation:
I=prt. I=(5,500)(0.016)(4) I=352.00 => 352+5,500=5,852
The amount is the closest to the account balance at the end of 4 years should be considered as the $5,860.53.
Calculation of the amount:Since the deposited amount is $5,500
The interest rate is 1.6%
And, the time period is 6 years
So, here the amount at the end of 4 years should be
= [tex]$5,500 \times (1 + 1.6\%)^{4[/tex]
= $5,860.53
Hence, the second option is correct.
learn more about interest rate here: https://brainly.com/question/24002393