The equation−3(2x −5)=−12x +15 −18x is solved by four students. They each show the first step of their work. Which student has an invalid first step?
Answers
Answer: Student X and Y
Step-by-step explanation:
Student W started off correctly as they simplified the first expression and got rid of the parentheses.
Student Z also started off correctly as they simplified the second expression and combined the like terms.
I don’t see what students X and Y did as their first step but I hope this helps. Sorry if it doesn’t
Hope this helped!!!
Related Questions
The population of a town can be modeled by f(x) = 19,820 * 0.98^x. Identify the initial value of the population. Is the population increasing or decreasing? What is the growth or decay factor? How does the population change each year?
Answers
Answer:
all ik is that its increasing i think
Step-by-step explanation:
Please help this is due in 1 hour, Don't answer the question if you have no answer or ideas. Im not trying to be rude but I really just need help.
Think about how you can use absolute value notation to express the distance between two points on a coordinate graph. For each pair of points below, find the distance between the given points and express your work using absolute value symbols. Explain or Show your work.
1. (4, 9) and ( –5, 9)
2. (7, –1) and (7, –4)
3. (0, 9) and (0, –7)
4. (4, –8) and (–10, –8)
Answers
just use this formula and plug in all your values since im suffering trying to type all of this out on a keyboard but use this formula D= [tex]\sqrt{(x_{2}-x_{1}) + (y_{2}- y_{1} ) }[/tex] if you insert ur points in here you will get distance between each point . hope this helped i think this formula may not be what the question is asking but its the formula to find distance between points so
whAt rate describes it
Answers
Answer:
the amazing rate
Step-by-step explanation:
1/2
Answer:
the answer is a
Step-by-step explanation:
because the amount of cups is 1/2
the amount of servings is 2/3
can someone please help me
Answers
Sam rode his bike 7 and one-half miles on Monday, 4 miles on Tuesday, and 6 and one-third miles on Wednesday. How many miles did he ride altogether?
A. 17 and two-fifths
B. 17 and three-fifths
C. 17 and one-sixth
D. 17 and five-sixths
Answers
Answer:
17 and 5/6
Step-by-step explanation:
7 1/2 mi. + 4 mi. + 6 1/3 mi.
= 7 1/2 mi. + 10 1/3 mi.
1/2 = 6/12
1/3 = 4/12
7 6/12 mi. + 10 4/12 mi.
= 17 10/12 mi.
= 17 5/6 mi.
Answer:
add 7 6 and 4 then add 1 half and 1 third of a mile ( a mile is about 5000 feet)
Step-by-step explanation:
solve the proportion. where necessary, round to the nearest hundredth. 8/2 = x+3/4
Answers
Answer:
x = 13
Step-by-step explanation:
8/2 = (x + 3)/4
~Simplify
4 = (x + 3)/4
~Multiply 4 to both sides
16 = x + 3
~Subtract 3 to both sides
13 = x
Best of Luck!
Josh works for a construction company that uses 150 pounds of gravel for each driveway they pour.
He can buy a dump truck load with 30,000 pounds of gravel or a pick-up truck load with 2,500 pounds.
Which amount should he buy so that no gravel is left after all of the driveways are poured and why?
A.
Josh should buy the pick-up truck load because 2,500 ÷ 150 = 16 23. There is enough gravel to
pour 16 driveways with 100 pounds of gravel left. You cannot divide 30,000 ÷ 150 evenly.
B.
Josh should buy the pick-up truck load because 2,500 ÷ 150 = 160 23. There is enough gravel to
pour 160 driveways with 100 pounds of gravel left. You cannot divide 30,000 ÷ 150 evenly.
C.
Josh should buy the dump truck load because 30,000 ÷ 150 = 200. There is enough gravel to
pour 200 driveways with none left. You cannot divide 2,500 ÷ 150 evenly.
D.
Josh should buy the dump truck load because 30,000 ÷ 150 = 2,000. There is enough gravel to
pour 2,000 driveways with none left. You cannot divide 2,500 ÷ 150 evenly.
Answers
Help help help help help help help
Answers
Answer:
C▶♋♋♋♋♋♋♋♋♋♋♋
answer correct and you get brainlyest
5- 3/14= ?
only fractions no decimals
Answers
Answer:
4 11/14
Step-by-step explanation:
I did mental math and thats what I got so that should be right.
Which is 4 11/14
Or
4.7857142
If one angle of a triangle measures 80°, select a pair of angle measurements that could describe the other two angles.
Answers
Answer:C
Step-by-step explanation:
Answer:
A triangle's angles in total have to be added to 180°, so I believe the pair should be A and D
Step-by-step explanation:
180-80=100
95+5+100
in total we have a triangle with all angles added up to 180°
Factor out the coefficient of the variable term.
The expression 1.5y – 6 factored is
Answers
Answer:y=4
Step-by-step explanation: Simplifying
1.5y + -6 = 0
Reorder the terms:
-6 + 1.5y = 0
Solving
-6 + 1.5y = 0
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '6' to each side of the equation.
-6 + 6 + 1.5y = 0 + 6
Combine like terms: -6 + 6 = 0
0 + 1.5y = 0 + 6
1.5y = 0 + 6
Combine like terms: 0 + 6 = 6
1.5y = 6
Divide each side by '1.5'.
y = 4
Simplifying
y = 4
The equivalent equation, if 6 is factored out from the expression is 6(0.25y - 1)
Given a linear equation y = mx + b where b is the constant.
Given the linear equation f(y) = 1.5y - 6, we can see that 6 is the constant in the expression.
Factoring out 6 from the expression
[tex]f(y) = 1.5y-1.6\\f(y)=6(\frac{1.5y}{6}-\frac{6}{6} )\\f(y)=6(\frac{0.25y}{1} -1)\\f(y) = 6(0.25y-1)[/tex]
Hence the equivalent equation, if 6 is factored out from the expression is 6(0.25y - 1)
Learn more here: https://brainly.com/question/20953433
I will give brainlest for the right answer. Please don't just make up a random thing. PLEASE!
Which expression is equivalent to 30(1/2x-2)+40(3/4y-4)?
45xy-220
15x-30y-220
15x+30y-220
15x+30y-64
Answers
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
[tex]30( \frac{1}{2} x - 2) + 40( \frac{3}{4} y - 4) = \\ [/tex]
[tex](30 \times \frac{1}{2} x) -( 30 \times 2 )+ (40 \times \frac{3}{4} y )- (40 \times 4 )= \\ [/tex]
[tex]15x - 60 + 30y - 160 = \\ [/tex]
[tex]15x + 30y - 220[/tex]
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
The correct answer is Option Three .
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
If m = -4 and n = 7, what is the value of m - n?
11
-3
-11
3
Answers
Answer:
-11
Step-by-step explanation:
-4 - 7 = -11
Need help for 2 and 3realy don't understand 3
Answers
Answer:
p=6 and r=48
Step-by-step explanation:
19=4p-5
19+5=4p
24=4p
24/4=p
6=p
check
19=4p-5
19=4x6-5
19=24-5
19=19
3)r/2-8=16
r/2=16+8
r/2=24
r=24x2
r=48
check
r/2-8=16
48/2-8=16
24-8=16
16=16
Identify next three numbers in this sequence: 2, 6, 3, 9, 6, 18, 15…
45, 22.5, 67.5
19, 16, 20
45, 42, 126
40, 37, 111
Answers
Answer: 45, 42, 126
Step-by-step explanation:
hope it helps
What is the Fitness gram PACER test :)
(Can we get a PE subject?)
Answers
Answer:
The fitness gram pacer test is where u have to run from one point to another at a certian pace and the pace gets faster as you keep doing it.
Step-by-step explanation:
(brainliest???)
Answer: a meme
jk heres the real answer
the fitness gram pacer test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The test is used to measure a students aerobic capacity as part of the fitness gram assessment. Students run back and forth as many times as they can, each lap signaled by a beep sound.
(PLEASE ANSWER)
You have 2 different savings accounts. For Account A, the simple interest earned after 3 months is $0.90. For Account B, the simple interest earned after 18 months is $22.50. If the interest rate is 3.6%for Account A and 2.5% for Account B, how much is the principal in each account? Which account earned you the most interest the first month? Explain your answer.
Account A has a principal of $BLANK. (Round to the nearest dollar as needed.)
Answers
Answer:
Mate it has been two months do you still need this
Step-by-step explanation:
Hello! Can you please help me with this? I will give the first correct answer brainliest if you help + 5 stars and a like and a like on your account page :)
Answers
Answer:
48
Step-by-step explanation:
First, substitute in 12 for x
2.4(12 ÷ 1/4)
Distribute 2.4 within the parenthesis
2.4 x 12 = 28.8
2.4 x 1/4 or 2.4 x 0.25 = 0.6
28.8 ÷ 0.6
Divide to get your answer:
48
I Hope That This Helps! :)
Michael decided to make French toast. He finds a recipe that calls for the following ingredients:
FRENCH TOAST
12 slices of bread
4 eggs
1 cup of milk
1 teaspoon of cinnamon
Michael makes a single recipe and shares the food equally among himself AND his four family members. How many slices of French toast does each person receive?
A.Each person gets 2 2/5 slices of French toast.
B.Each person gets 1/2 slice of French toast.
C.Each person gets 2 slices of French toast.
D.Each person gets 12 slices of French toast.
E.Each person gets 5 slices of French toast.
F.Each person gets 5/2 slices of French toast.
Answers
Answer:
The answer is "A" because you would have everyone get 2 pieces and you would give everyone 2/5 which would evenly divide 12 pieces
Im pretty sure it is A! But I still could be wrong. PLease forgive me if im wrong but I tried my hardest. If Im wrong pls correct.
(if correct could I maybe have brainliest? Tysm!)
Thats all. LOL cya
btw don't cheat anymore
WINK WINK WINK
lol
PLEASSEEEE HELPPPP!!!!!
Answers
Answer:
-3, -1
Step-by-step explanation:
Identify the GCF for he given set 23 and 115 A. 1 B. 23 C. 11
Answers
Answer:
b. 23
Step-by-step explanation:
Using factor trees
23 115
∧ ∧
1 23 5 23
So,
23= 23
115= 23
If you circle the common factors in each factor tree, you get 23.
Therefore your answer is B
The greatest common factor of the numbers 23 and 115 will be 23.
What is the greatest common factor?Simply said, it is the biggest common element. The highest consistent element in the above example is 15, making 15 the greatest common factor amongst 15, 30, and 105. The biggest chunk of the common factors is called the "Greatest Common Factor" (of two or more numbers).
The whole numbers are given below.
23 and 115
The factor of the number 23 is given as,
23 = 1 x 23
The factor of the number 115 is given as,
115 = 1 x 5 x 23
The greatest common factor of the numbers 23 and 115 will be 23.
More about the greatest common factor link is given below.
https://brainly.com/question/11221202
#SPJ2
Chance rode his bike for x minutes, and Jaden rode his bike for 3/8 more than that.
Part A
Write and equation using fractions that relates the number of minutes Chance rode with y, the number of minutes that Jaden rode his bike. (write your answer as a fraction)
y= __ x
Part B
Write an equation, using decimals, that relates the number minutes chance rode with y, the number of minutes that Jaden rode his bike.
y=___ x
Answers
Answer:
Part A = 6/16
Part B .15
Step-by-step explanation:
The distance from Leoti, Kansas to Dighton, Kansas on the map is approximately 2.5 inches. The key to the map states that 1 inch is equal to 20 miles. Which of the following best approximates the distance from Leoti to Dighton?
Answers
Answer:
I believe its 50
Step-by-step explanation:
since the distance is 2.5 inches and each inch is equivalent to 20 miles
2.5x20=50
Setting 7 / 3 equal to which ratio would result in a valid proportion? a.9 / 49 b.18 / 42 c.42 / 18 d.49 / 9
Answers
someone help me please
Answers
Answer:
A. Length= 1.5 inches
width= 2 inches
B. 15
Step-by-step explanation:
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
hope that helpes sorry if im whrong good luck
A math test has 12 multiplication problems and 24 division problems.
What is the ratio value of division problems to total problems? [Type your answer as a fraction in simplest form, and use / for the fraction bar.]
help help h e l p
Answers
Answer:
2 : 1
Step-by-step explanation:
24 to 12
divide by 12
2 to 1
its just simplifying
Answer:
2:1
Step-by-step explanation:
The boundary line on the graph represents the equation
5x + 2y= 6.
Write an inequality that is represented by the graph.
Answers
What are the domain and range of f(x) = 21?
Answers
The domain and the range of a function, are the set of values the function can take as input and output.
The domain and the range of [tex]\mathbf{f(x) = 21}[/tex] are:[tex]\mathbf{(-\infty,\infty)}[/tex] and 21, respectively.
The function is given as:
[tex]\mathbf{f(x) = 21}[/tex]
There is no restriction as to the value of x.
So, the domain is:
[tex]\mathbf{Domain = (-\infty,\infty)}[/tex]
Irrespective of what the value of x is, the value of y will remain 21.
So, the range is;
[tex]\mathbf{Range = 21}[/tex]
Hence, the domain and the range of [tex]\mathbf{f(x) = 21}[/tex] are:[tex]\mathbf{(-\infty,\infty)}[/tex] and 21, respectively.
Read more about domain and range at:
https://brainly.com/question/21853810
aa i need help please :')