These are samples of student work. Both students got the same answer, but did the work differently. Which student did the work correctly?
Answers
Answer:
Student B did the problem corectly
Step-by-step explanation:
Student a did 3*4 while student B did 3*3*3*3 which would equal 27
Related Questions
PLEASE HELP!! the polynomial expression x(2x^2+15)(4x^2+5x+3 where x is in inches can be used to model the number of cubic inches of cement that will be needed for a new porch. The cement contractor used 2 for the value of x. Determine the dimensions in inches of the cement needed for the porch. Height(shortest length side) width(medium length side) and length(longest length side)
Answers
Answer:
height 2 incheswidth 23 incheslength 29 inchesStep-by-step explanation:
For x=2, the dimensions are ...
height = x = 2 inches
width = 2x² +15 = 2(2²) +15 = 8 +15 = 23 inches
length = 4x² +5x +3 = (4x +5)x +3 = (4·2 +5)2 +3 = 29 inches
Which 2 expressions are equiavalent to -40/9
Answers
Answer:
360 is the answer
Step-by-step explanation:
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carryonlearing
Answer:
Step-by-step explanation: 2\frac{u^2}{8}u^4=10\frac{u^3}{9}u
PLEASE help
xº
520
38°
220°
X = degrees
Answers
Step-by-step explanation:
by complete angle
x+38+52+220=360
x+310=360
x=360-310
x=50
HELP PLZ I NEED THIS DONE ASAP
Answers
Answer:
Step-by-step explanation:
The answer would be -19
Hope you could get an idea from here.
Doubt clarification - use comment section.
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E
B
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5. Find the measure of angle BAC. Hint: What is the sum of the measures of the
vertex angles of the nine congruent isosceles triangles? (1 point)
HELP PLEASE!!!!!
Answers
The measure of angle BAC is 20 degrees
How to determine the measure of BAC?The angle on a straight line is 180 degrees.
There are 9 equal sections on the straight line.
This means that the measure of each section is:
Each section = 180/9
Evaluate
Each section = 20
So, we have:
BAC = 20 degrees
Hence, the measure of angle BAC is 20 degrees
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Bella is training for a marathon. She can run 19 miles in 150 minutes. How many miles can she run in 5 hours?
Answers
Answer:
Step-by-step explanation:
The answer is 38 miles
Solve the equation below for q.
V=1/4xq
Answers
Answer:
q=4v/x
Step-by-step explanation:
5(x-2)-3= 5x-13
help me plz
Answers
Mike makes and sells skateboards. If he has a cost of $6,200 per year plus a cost of $15 per skateboard, how many skateboards must he sell in order to make a profit if each skateboard sells for $35?
Answers
Answer: 310
Step-by-step explanation:
35-15= 20
6200 / 20 = 310
Answer:310
Step-by-step explanation:divide 6200 by 20 and it gives you 310
How many problems of each point value are on the test? 10 problems worth 5 points and 25 problems worth 2 points 14 problems worth 5 points and 15 problems worth 2 points 16 problems worth 5 points and 13 problems worth 2 points 15 problems worth 5 points and 13 problems worth 2 points.
Answers
The question is an illustration of system of equations
There are 14 problems worth 5 points and 15 problems worth 2 points
The system of equations is given as:
[tex]x + y = 29[/tex]
[tex]5x + 2y = 100[/tex]
Make x the subject in [tex]x + y = 29[/tex]
[tex]x = 29 - y[/tex]
Substitute 29 - y for x in [tex]5x + 2y = 100[/tex]
[tex]5(29 - y) + 2y = 100[/tex]
Open brackets
[tex]145 - 5y + 2y = 100[/tex]
Evaluate like terms
[tex]145 - 3y = 100[/tex]
Collect like terms
[tex]- 3y = 100-145[/tex]
Evaluate like terms
[tex]- 3y = -45[/tex]
Divide both sides by -3
[tex]y = 15[/tex]
Substitute 15 for y in [tex]x = 29 - y[/tex]
[tex]x = 29 - 15[/tex]
[tex]x = 14[/tex]
This means that there are 14 problems worth 5 points and 15 problems worth 2 points
Read more about system of equations at:
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Koala Airlines carries an average of 272 passengers on its Dallas-Perth flight. It runs 620 such flights each year. How many passengers does it carry on those flights each year?
Answers
Answer:
272×620=168,640
Step-by-step explanation:
If koala airlines carries 272 in average then the answer is 168,640
What is 1/4 + 10/16?
Answers
Answer:
[tex]\frac{7}{8}[/tex]
Step-by-step explanation:
[tex]\frac{1}{4}\ + \frac{10}{16}\[/tex]
[tex]= \frac{4}{16}\ + \frac{10}{16}\\[/tex]
[tex]= \frac{14}{16} \\[/tex]
[tex]= \frac{7}{8}[/tex]
hope it helps :)
mark brainliest!
The number of students in a chess club decreased from 19 to 16. What is the percent decrease? Round your answer to the nearest percent. [The percent decrease is ___%.]
Answers
Answer:
it it went down 16%
Step-by-step explanation:
if you calculate it, 16 out of 19 points is 84%. this means that it went down 16%.
Explanation:
The decrease is 3 since 19-16 = 3. Divide this decrease value by the original count: 3/19 = 0.1579 = 15.79% = 16% approximately
There are 222 red marbles in a box. Amit takes out 6 red marbles and replaces them with 12 blue
marbles. He continues doing this till all the red marbles are replaced with blue marbles.
Which of the following expressions gives the total number of blue marbles he put in the box?
A (222 + 6) = 12 B (222 - 6) + 12 C (222 - 6) + 12 D (222 + 6) x 12
Answers
Answer:
(222 - 6) + 12
Step-by-step explanation:
You put B and C as the same thing but the correct option is this because first you take away 6 (subtract 6) from the 222 marbles then you replace them with 12 (add 12).
16
Which equation has a graph of a vertical line?
Answers
Answer:
3rd option
Step-by-step explanation:
The equation of a vertical line parallel to the y- axis is
x = c
where c is the value of the x- coordinates the line passes through
The only equation in this form is option 3
3x - 2 = 0 , as
3x = 2 and
x = [tex]\frac{2}{3}[/tex] ← equation of vertical line
a video game system was on sale for $350. if the discount was 10% off, how much money did they take off the price?
Answers
Answer:
they took off 35$
Step-by-step explanation:
hope this helps
Answer:
$35
Step-by-step explanation:
10 divided by 350 = $35
Please guys I have 10 maybe 20 minutes to get this finished
Answers
Answer:
so there are 100 pennies in one dollar so
100*1000000=100000000
or 100 million
Hope This Helps!!!
1,000,000
Which is 1.0 * 10^6
The ratio of the radii of two circles is 2:3. Find the ratio of their areas. If the area of the bigger circle is 3123 sq. cm, find the area of the smaller circle.
Answers
Answer:
Your answer .
Step-by-step explanation:
Need some help :(
A)12.7
B)13.3
C)12.4
Answers
Answer:
i am just here for points
Step-by-step explanation:
A recipe requires 2 eggs for every 5 dozen cookies. At this rate, how many eggs are required for 30 dozen
Answers
5x12=60 cookies require 2 eggs
30x12=360
360 divided by 60= 6
so six eggs
Answer:
12
Step-by-step explanation:
Theres 6 5's in 30. ( 5,10,15,20,25 and 30.)
There is 2 eggs in every 5 dozen cookies, ( 5d, 2, 10d, 4, 15d, 6, 20d, 8, 25d, 10, 30d, 12.) The d means dozen by the way...
I am so sorry if you use this and get it wrong!! I am not good at math!! And i am sorry, this is probably confusing >-<
Combine the like terms to create an equivalent expression
−4q-(-8p)+10
Answers
Answer:
Step-by-step explanation:
−4q-(-8p)+10
= -4q + 8p + 10.
(There are no like terms).
Select “Rational” or “Irrational” to classify each number.
Answers
Can you help me answer this question?
Increase £184 by 3%
Answers
Answer:
189.52
Step-by-step explanation:
184 x 0.03
5.52
184 + 5.52
189.52
Answer:
184*1.03 = £189.52
Step-by-step explanation:
C.J can shoot 36 shots in 3 minutes enter the number of shots C.J can shoot in 1 minute
Answers
Answer:
he can shoot 12 shots in 1minute
Step-by-step explanation:
3minutes = 36 shots
1 minute= 36 divided by 3 which is equal to 12
4square plus 2power of xdivide by 2 equal to 16 what is the answer of this question
Answers
Answer:
[tex]x=4[/tex]
Step-by-step explanation:
We can solve this question by understanding what is first says. The expression tells us 4 square which is 16 plus to to the power of x and all that divided by two: [tex]16+2^{x} / 2 = 16[/tex]
Now we can solve for x:
1. [tex]16 + 2^{x} = 32[/tex]
2. [tex]2^{x}=16[/tex]
3. [tex]x=4[/tex]
A line passes through the point ( -1,2 ) and has a slope of 6. Write an equation for this line.
Answers
Answer:
y = 6x+8
Step-by-step explanation:
y = mx+b
y = 6x + b
2 = 6(-1)+b
2 = -6+b
8 = b
y = 6x+8
I need help asap pls
Answers
Answer:
d? Kerana ianya tidak sama kaki
Suppose your family buys a "movie card" from a DVD
store that entitles you to rent 25 movies. You rent 3
movies per week.
Model the situation with a linear function.
Answers
The function that models this given situation is 3x = 25.
What is a function?A function can be defined as the outputs for a given set of inputs.
The inputs of a function are known as the independent variable and the outputs of a function are known as the dependent variable.
Given, my family bought a movie card from a DVD store that entitles you to rent 25 movies.
Assuming no. of weeks to be x, therefore i can watch movies for
3x = 25 weeks at 3 movies rented each week.
learn more about functions here :
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find the value of x
Answers
What is the value of X?
Answers
Answer: It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable