PLEASE HELP
WORTH 30 PTS!!
Choose the step that shows where a mistake is made (if there is one).
-2(x + 4) + 4x = 16
Step 1 -2x + 8 + 4x = 16
Step 2 2x + 8 = 16
Step 3 2x = 8
Step 4 x = 4
a Step 1
b Step 2
c Step 3
d Step 4
e No mistakes were made. The steps are correct and the answer is x = 4.
Answers
Answer:
The mistake is in step 1 when you do -2(x+4) you do the distributive property first -2 times x is -2x that's correct but -2 times 4 is not 8 it is -8
when you multiply by negatives the answer will always be a negative unless your multiply 2 negative number together then itll be positive ex. 4 × -4 = -16 (negative) but -4 × -4 = 16 (positive)
Related Questions
2) Find the median.
4,9, 1, 4, 6, 2, 3,1
A) 1 and 4
B) 3.5
C) 3.75
D) 8
pls help me show work
Answers
Answer:
3.5
Step-by-step explanation:
1-List the numbers from least to greatest
1, 1, 2, 3, 4, 4, 6, 9
2- Then cross off a number from each side unitl you ar with 3 and 4 in the middle.
3- Add 3+4 Together
7
4- Divide by two
3.5
The volume of a 3 cm cube is
O 9 cu cm
O 12 cu cm
O 6 cu cm
O 27 cu cm
Answers
Find the following angles from the above rectangle. ( answer only 5-12) please :)
Answers
The believe the answer is
10. FAE
5.) 37°
6.) 53°
7.) 37°
8.) 53°
9.) 90°
10.) 37°
11.) 53°
12.) 37°
Can someone please help me with math.
Answers
Answer:
1 - B
2 - B
Step-by-step explanation:
Hey There!
The slope is the change in y over change in x
In the graph shown as y goes up 3 x goes down 4
so the slope is -3/4 or B
See graph below for number 2
I had plotted the two points (4,6) and (2,12) and the equation that passed through those points was y=-3x+18 so your answer is B
9. The ratio of boys to girls in Mrs. Reeves's class is 4 to 5. There are 20 girls in the
class.
What is the total number of students in Mrs. Reeves's class?
Answers
Answer:
boys : girls
4 : 5
multiply by 4
16 : 20
total = 36
Answer:
80
Step-by-step explanation:
HELP ASAP
Write the equation of the line that passes through the points (1,-4) and (4, -5).
Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal
line
Answers
Answer:
[tex]y+4 = -\frac{1}{3} (x-1)[/tex]
Step-by-step explanation:
1) First, find the slope of the line. Use the slope formula [tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex] to find the slope. Substitute the x and y values of the given points into the formula and solve:
[tex]m = \frac{(-5)-(-4)}{(4)-(1)} \\m = \frac{-5+4}{4-1} \\m = \frac{-1}{3}[/tex]
So, the slope is [tex]-\frac{1}{3}[/tex].
2) Use the point-slope formula [tex]y-y_1 = m (x-x_1)[/tex] to write the equation of the line in point-slope form. Substitute values for [tex]m[/tex], [tex]x_1[/tex], and [tex]y_1[/tex] into the formula.
Since [tex]m[/tex] represents the slope, substitute [tex]-\frac{1}{3}[/tex] in its place. Since [tex]x_1[/tex] and [tex]y_1[/tex] represent the x and y values of one point on the line, choose any one of the given points (it doesn't matter which one) and substitute the x and y values of it into the formula. (I chose (1,-4), as seen below). This gives the equation of the line in point-slope form.
[tex]y-(-4) = -\frac{1}{3} (x-(1))\\y+4 = -\frac{1}{3} (x-1)[/tex]
Answer:
Step-by-step explanation:
Thanks for my points back
Sandy pays $120 for 4 violin lessons. How much does she pay for 8 violin lessons?
Answers
Answer:
$240
Step-by-step explanation:
120x2
Answer:
240
Step-by-step explanation:
120x2= 240
or
120+120=240
A small theater had 6 rows of 26 chairs each. An extra 9 chairs have just been brought in. How many chairs are in the theater now?
Answers
Step-by-step explanation:
1) 6*26 = 156
2) 156 + 9 = 165
Andy buys shoes that are on sale for 25% off the regular price. If the sale price is $36.45, what was the regular price of the shoes to the nearest cent?
Answers
A television and DVD player cost a total of $990. The cost of the television is two times the cost of the DVD player. Find the cost of each item.
Answers
3x=990
X=990/3
X=330
Television,2x is 660
Dvd,x is 330
Welcome :)
The rectangle below has an area of 15k4 +35k3+20k2
What is the width and length
Answers
Answer:
the answer is 5
Step-by-step explanation:
it is right jk
Answer:
Step-by-step explanation:
We know area of a rectangle is xy where x and y are its dimensions.
A=xy
If we factor the area we will get the dimensions.
A=15k^4+35k^3+20k^2
(this can be factored in many ways to produce the same area, the answer choices you are given can be any given combination of factors.)
A=15k^4+15k^3+20k^3+20k^2
A=15k^3(k+1)+20k^2(k+1)
A=(15k^3+20k^2)(k+1) (this is one way)
A=5k(3k^2+4k)(k+1)
A=(3k^2+4k)(5k^2+5k) (and another way)
Either expression would give you width and length (or length and width) as they all produce the area of the original equation.
Help me plz will give Brainly est
Answers
Answer:
$394.38
Step-by-step explanation:
the formula is I=PRT the trick here is converting the rate from 7% to a decimal. its 0.07. so you have I=(939)(.07)(6)=394.38
Find the area of the figure
Answers
Answer: its either 2.5 or 16
Step-by-step explanation: hope this is helpful I don't know if these answers are right...
pls help me asap for brainlest
Answers
Answer:
Option 3
Step-by-step explanation:
Answer: The third one, I think.
( I'm sowwie if I'm wrong but I hope this was helpful) >;D
Last week, Thomas ran 5 1/4 miles. This week, he planes to run 1/2 as far as he ran last week. How many miles does Thomas plan to run this week?
Answers
Answer:
2.625
Step-by-step explanation:
Last week Thomas ran 5 1/4 miles
This week he plans to run 1/2 miles as far
Therefore the number of miles he plans to run cann be calculated as follows
= 5 1/4 × 1/2
= 21/4 × 1/2
= 21/8
= 2.625
Hence Thomas plans to run 2.625 miles
ava gathered data about the age of runners and the time it took them to complete a 5K race and half marathon. Her data is displayed in the given scatter plots
Answers
Based on the information provided by the table, it can be inferred that Running the half marathon took more than double the time than running the 5K. (option C)
How to read the graph?The graphs shown relate the time and age of athletes who ran 5k and half marathon.
The first graph shows the relationship in 5k, in which all the athletes, regardless of their age, managed to complete the test between 20 and 30 minutes.
The second graph shows the relationship in the half marathon, in which the younger runners completed the test in less time (80 minutes) than the older athletes (140 minutes).
According to this information, it can be inferred that the athletes took more than twice the time used in the 5k race to complete the half marathon (option C)
Note: This question is incomplete because the graph and the options are missing. Here are the options and the graph.
Learn more about marathon in: https://brainly.com/question/14246476
Each of 7 students reported the number of movies they saw in the past year. Here is what they reported.
17, 7, 13, 17, 7, 9, 10
Find the mean number of movies that the students saw.
If necessary, round your answer to the nearest tenth.
Answers
Answer:
11
Step-by-step explanation:
Answer:
11.4 (This is already rounded to the nearest tenth)
Step-by-step explanation
1.) Add all of them
17+7+13+17+7+9+10=80
2.) Divide the sum by how many numbers there are
In this case, there are 7, so 80/7 is 11.42...
3.) Get the answer
80.7 simplifies into 11.42 so rounded to the nearest 10th is 11.4.
Hope this helped. Good luck on your homework!
what’s the answers because this is stressing me?? plz help
Answers
Answer:
You have to know the order or which side is the con-sin etc
Step-by-step explanation:
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Find m Please let me know if you could help me, with any more questions. I’m struggling in geometry. I wanna get back to doing sports again!
Answers
9514 1404 393
Answer:
∠C = 48°
Step-by-step explanation:
The two triangles are congruent by ASA. (The common side BD is between the angles marked congruent.) This means angles A and C have the same measure.
Angle A plus the two given angles will total 180°.
∠A = 180° -70° -62° = 48°
∠A = ∠C = 48°
Answer:
c=48°
Step-by-step explanation:
...............
Major arc CBD measures 300 degrees. Which is the radian measure of its corresponding central angle? O 4 pie/3 O 5 pie/6 O 5 pie/3 O 11 pie/6
Answers
Answer:
[tex]\dfrac{5\pi}{3}[/tex]
Step-by-step explanation:
Given that,
Major arc CBD measures 300 degrees.
We need to find the radian measure of its corresponding central angle.
Radian measure is given by :
[tex]R=\dfrac{\pi}{180}\times d\\\\R=\dfrac{\pi}{180}\times 300\\\\R=\dfrac{5\pi}{3}[/tex]
So, the radian measure is [tex]\dfrac{5\pi}{3}[/tex].
if the probaility that it will rain tomorrow is 1/5 what is the probaility that it will not rain tomorrow
Answers
Answer:
4/5 would be the answer....
Ms. Benson is making a jewelry box using 2 identical squares of wood and 4 identical rectangular pieces of wood, as shown below.
What is the surface area of the jewelry box in square inches (sq. in)?
Answers
Length of rectangles = 7 in.
Breadth of 4 rectangles = 3 x 4
= 12 in.
Side of squares = 3 in.
Area of 4 rectangles = length x breadth
= 7 x 12
= 84 sq. in.
Area of two squares = 2(side x side)
= 2(3 x 3)
= 18 sq. in.
Therefore, Surface area of the Jewellery box = 84 sq. in. + 18 sq. in.
= 102 sq. in.
8.94427191 rounded to the neareast 10th
Answers
Answer:
8.9
Step-by-step explanation:
Answer:
the answer will be 8.9 if im not wrong
5. Using the factor tree, What are the prime factors of 36
Answers
Answer:
Step-by-step explanation:
A factor tree is not unique for a given number. Instead of expressing 36 as 2 × 18, we can express 36 as 6 × 6. Prime factorization of 36 using factor tree method is 2 × 2 × 3 × 3 = 2² × 3².
Need help with this;
Answers
Answer:
See belowStep-by-step explanation:
Deposit amount P = $4200Interest rate r = 3 1/2% = 3.5% = 0.035 PA compounded semiannuallyCompound n = 2 per yearCalculations as per following questions
a. I = $4200*(0.035/2) = $73.5b. A = $4200 + $73.5 = $4273.5c. I = $4273.5*(0.035/2) = $74.79d. A = $4273.5 + $74.79 = $4348.29e. I = $4348.29 - $4200 = $148.29f. I = $4200*0.035 = $147Find the area.
4m
6m
6m
Answers
Please I need help with this problem
Answers
Answer:
The answer is A
Joanne deposited $10,000 into an account that earns 5.5% compound interest, compounded annually. How much interest will Joanne earn after 10 years
Answers
Answer:
55.0%
Step-by-step explanation:
I used a calculator
Colin predicted whether he got answers right or wrong in his 50 question exam.
He identified the 12 questions he thought he got wrong.
It turns out that Colin got 5 questions right that he thought he got wrong.
Colin also got a total score of 42 out of 50 in the test.
What is the percentage accuracy he had with predicting his scores
Answers
Answer:
92.86%
Step-by-step explanation:
Total questions, T = 50.
Colin thought 8 questions were right.
Colin got 5 questions right that he thought he got wrong.
Total score, s = 45.
So, actual number of questions which are wrong are 5.
Score according to him = 50 - 8 = 42.
Now, we know percentage accuracy is given by :
Therefore, percentage accuracy he had with predicting his scores is 92.86%.
please helpp !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
Option C is correct
Step-by-step explanation:
Have a nice day. :-)
and can I maybe plz have brainliest if I am correct?
Answer:
Its the second one because its opened at the top and closed at the bottom and there isn't a top on it.
Step-by-step explanation: