Correct question is;
Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. The walnuts cost $6 per pound. He uses the equation 2x + 6y = 12 to represent the total cost,
Where x represents the number of pounds of granola and y represents the number of pounds of walnuts. He solves the equation for y, the number of pounds of walnuts he can buy.
2x + 6y = 12
2(3) + 6y = 12
6 + 6y + 6 = 12 + 6
6y = 18
y = 3
which is the first error that tomas made?
A) tomas substituted the 3 for x when he should have substituted 6 for x.
B) tomas added 6 to both sides of the equation instead of subtracting 6.
C) tomas should have written the equation as 3x + 6y = 12.
D) tomas substituted 3 for x when he should have substituted 3 for y.
Answer:
Option B: tomas added 6 to both sides of the equation instead of subtracting 6.
Step-by-step explanation:
We are told that; x represents the number of pounds of granola while y represents the number of pounds of walnuts.
Now, we are told that He can spend a total of $12 on the ingredients. Also that he buys 3 pounds of granola that costs $2.00 per pound while the walnuts cost $6 per pound.
Thus;
2x + 6y = 12
He buys 3 pounds of granola. Thus;
2(3) + 6y = 12
6 + 6y = 12
The next step here is to subtract 6 from both sides but Tomas added 6 to both sides instead.
Thus, option B is the correct answer.
Answer:
its b
Step-by-step explanation:
Give me the answer please I need help
The rows at a concert hall get longer and longer
as you go further from the stage. If the first row
has 10 seats and each row after that has 2 seats
added onto it, how many seats are in the first 5
rows? How many would be in the 31st row?
Answer:
9
Step-by-step explanation:
daddy yess nice and good
Witch number is rational?
A. -2.1010010001....
B.-0.8974512.....
C.1.2547569.....
D.5.33333333.....
Answer:
5.333333333333
Step-by-step explanation:
converts to 5 1/3
Multiply. (−1.2)(0.4) Enter your answer as a decimal in the box.
Answer:
-0.48
Step-by-step explanation:
Trust me I took the test.
Answer:
multiply (-1.2)*(0.4) = -0.48
Step-by-step explanation:
k12
Solve the system of equations. Show all work!
x – y – 2z = 4
3x + y - z = 5
z = -3
Answer:
x=0
y=2
z=-3
Step-by-step explanation:
x-y-2z=4 ...(1)
3x+y-z=5 ...(2)
adding
4x-3z=9 ...(3)
z=-3 ...(4)
put in (3)
4x-3(-3)=9
4x+9=9
4x=9-9=0
x=0
put in (1)
0-y-2(-3)=4
-y+6=4
y=6-4=2
x=0,y=2,z=-3
Caleb is saving money to buy a bike next year. He makes $75 per week babysitting. So far he has saved $150. Write an inequality to show how many weeks he must babysit so he has at least $800 to spend on the bike, then solve the inequality.
Answer:
x>8.6
Step-by-step explanation:
We want to model an expression for the amount of money Caleb has and how many week he must work to have that amount
given data
amount at hand=$150
weekly saving=$75
let the number of weeks be x
total amount= $800
the expression for this situation is given as
y=mx+c
where y=800
m=75
c=150
substituting we have
800=75x+150
solving for x we have
800-150=75x
650=75x
x=650/75
x=8.6
then he must work for x>8.6 weeks
7.) Write the equation of a line in slope intercept form through the point (3, 1) and parallel to y = -⅓ x +4
(show all work)
help please someone!!!
the correct answer is y=5
Answer:
The correct answer Is y=5 i belive
Step-by-step explanation: Hope dis helped UWU :3 Meme for u
could anyone help me with this (will mark brainly)
Answer: Put 1/2 on " A " ( 2/2 On B ) 2/4 on C ( 4/4 on D but label them EFGH
Step-by-step explanation:
Felipe is planning a party. He has $50.00 to spend on sandwiches that cost $2.50 per person, $25.00 to spend on drinks that cost $1.50 per person, and $25.00 to spend on gift bags that cost $3.00 per person. Which expression could be used to show the amount of money he will have left over if x people attend the party? 50 + 7 x 100 minus 7 x 2.50 x + 1.50 x + 3.00 x 100 minus (2.50 x minus 1.50 x minus 3.00 x)
Answer:
100-7xStep-by-step explanation:
given data
amount for sandwiches=$50
amount for drinks is $25
amount for gift bags=$25
total amount=$100
the number of persons be x
cost of sandwiches= 2.5x
cost of drinks= 1.5x
cost of bags =3x
therefore the total cost is
2.5+1.5+3=$7
the balance is
total amount -total cost
Balance=100-7x
Answer:b
Step-by-step explanation: I took the test :3
What is the image of (6,-7)(6,−7) after a reflection over the line y=xy=x?
Answer:
are you good at math pls help me
Step-by-step explanation:
Answer: (-7,6)
Step-by-step explanation:
solve the problem below
123-20+8,098*67^8
Explain your answer
Answer:
3.28833605E+18 (Scientific Notation, for example, aE+b = a × 10^b) [ 3,288,336,052,853,678,818 ]
Step-by-step explanation:
123-20+8,098*67^8 =
(123 - 20) + (8,098 × 67^8)
103 + (8,098 × 67^8)
103 + 3,288,336,052,853,678,715 [3.28833605285367815E+18] =
3,288,336,052,853,678,818 [3.28833605285367815E+18]
≈ 3.28833605E+18
This is due to the order of operations, that defines the mathematical steps to solve arithmetic problems. This is known as PEMDAS (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction).
So each part of the expression must be worked out in a certain order to get the correct answer.
Enter the number that makes the equation 0.76+24/100=□/100+24/100 true
Answer:
76
Step-by-step explanation:
Reasoning. Eight avocados cost $4. How much do 16 avocados cost? How much do 20 avocados cost? How much do 9 avocados cost? Twelve large bottles of water cost $9. How many bottles can you buy for $3? What is the cost per bottle of water? How much would 7 bottles of water cost? A 10-pound sack of flour costs $8. How much does 40 pounds of flour cost? What is the cost per pound of flour? Here is an applet you can use if you choose to. Are you
Answer:
Eight avocados cost $4.
▪How much do 16 avocados cost? $8.00.
▪How much do 20 avocados cost? $10.00.
▪How much do 9 avocados cost? $4.50.
Twelve large bottles of water cost $9.
▪How many bottles can you buy for $3? 4 bottles.
▪What is the cost per bottle of water? $1.30.
▪How much would 7 bottles of water cost? $5.25.
A 10-pound sack of flour costs $8.
▪How much does 40 pounds of flour cost? $40.00.
▪What is the cost per pound of flour? $0.80.
what is the original slope and the parallel slope
Hey there!
Answer:
Original slope: [tex]\frac{-3}{1}[/tex]
Parallel slope: [tex]\frac{-3}{1}[/tex]
Step-by-step explanation:
The slope of this line looks like its [tex]\frac{-3}{1}[/tex], and parallel lines are lines that will never intersect, which means they will always have the exact same slope! Hope this helps! :)
perry connects a blue garden hose and a green garden hose to make a long hose.The blue hose is 17.5 feet.The green garden is 15.75.How long is the hose combined
Answer:
33.25
Step-by-step explanation:
The population of Greenville is 175% of the population of Washington County. Find
the population in Greenville if the population in Washington County is 4,000 people.
Rewrite 3^-7 using a positive exponent.
Answer:
1/3^7
Step-by-step explanation:
Negative exponents go to the denominator
The positive exponent for the given exponent is [tex]\frac{1}{3^7}[/tex].
The given exponent is [tex]3^{-7}[/tex].
What is an exponent?The exponent of a number shows how many times the number is multiplied by itself.
A positive exponent tells us how many times to multiply a base number, and a negative exponent tells us how many times to divide a base number.
Now, [tex]3^{-7}=\frac{1}{3^7}[/tex] (∵[tex]a^{-n}=\frac{1}{a^n}[/tex])
Therefore, the positive exponent for the given exponent is [tex]\frac{1}{3^7}[/tex].
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√20
A. 6
B. 2√5
Which one?
Answer:
B
Step-by-step explanation:
√20
√(5×4)
√5 ×√4
2√5
Answer:B
generally speaking, these are numbers we usually apply in real world
Answer:
Imaginary numbers, also called complex numbers, are used in real-life applications, such as electricity, as well as quadratic equations.
Step-by-step explanation:
This is pretty easy but I’m just bad at explaining it if u know ur inequalities please help.
Multiply (3)(-4)(2)
0-48
0-24
24
4
FIRST ONE AND CORRECT WILL GET BRAINLY Joanie went to the park. She played with her friend Kari for a while before walking to home. Look at the graph and solve all questions.
Answer: She was at the park For 12 minutes.
She walked at her slowest speed for 7 minutes
Step-by-step explanation:
Angie and Kenny play online video games. Angie buys software and of game play. Kenny buys software and of game play. Each software package costs $. If their total cost is $, what is the cost of one month of game play?
Answer: to be honest its unknown
Step-by-step explanation: there are "$" signs but no numbers
Juanita borrowed $600 to purchase a new computer. She
was charged 7% interest for two years. She used the
simple interest formula to find the interest.
1 = 600(7)(2)
What error did Juanita make and how will her error affect
the interest she calculates? Explain.
Answer:
Sample response:Juanita did not change the 7% to the decimal 0.07. When she completes the problem as written, the interest will be greater than the money she borrowed.
Step-by-step explanation:
its right trust me
y = 5e2 +20
work out the value of y when e = -3
Answer:
y=65
Step-by-step explanation:
y=5*-3 squared+20
y=5*-3*-3+20
y=5*+9[-*- is +]+20
y=5*9+20
y=45+20
y=65
Is 9.68 a rational number?
Answer:
No, its irrational.
Step-by-step explanation:
An arts academy requires there to be 3 teachers for every 57 students and 4 for every 44 students. How many students does the academy have per teacher? Per tutor? How many tutors does the academy need if it has 121 students?
This question is incomplete
Complete Question
An arts academy requires there to be 3 teachers for every 57 students and 4 tutors for every 44 students. How many students does the academy have per teacher? Per tutor? How many tutors does the academy need if it has 121 students?
Answer:
a)19 students per teacher
b)11 students per tutor
c)11 tutors if they have 121 students
Step-by-step explanation:
An arts academy requires there to be 3 teachers for every 57 students and 4 tutors for every 44 students.
a) How many students does the academy have per teacher?
3 teachers for every 57 students
3 teachers = 57 students
1 teacher = x
Cross Multiply
3x = 1 × 57 students
x = 57 students/3
x = 19 students
Hence, we have 19 students per teacher
b) How many students Per tutor?
4 tutors for every 44 students.
4 tutors = 44 students
1 tutor = x students
Cross Multiply
4x = 44 × 1
x = 44/4
x = 11 students.
This means that we have 11 students per tutor
c) How many tutors does the academy need if it has 121 students?
4 tutors for every 44 students.
44 students = 4 tutors
121 students = x
Cross Multiply
x = 121 × 4/44
x = 11 tutors
Hence, the school would need 11 tutors if they have 121 students
Edward purchased his home for $89,000. For the first three years after he moved in the real estate market was very lively, so his property value grew by 4.8% every year. For the next five years, the market slowed down somewhat, and his property value grew by 2.6% every year. How much had the value of Edward's home increased after eight years, to the nearest hundred dollars?
a. $25.700
b. $27.500
c. $30,000
d. $13,200
Answer:
b
Step-by-step explanation:
After eight years, the value of Edward's home increased by $24,386.
What is mean by Percentage?A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.
We have to given that;
Edward purchased his home for $89,000.
For the first three years after he moved in the real estate market was very lively, so his property value grew by 4.8% every year.
And, For the next five years, the market slowed down somewhat, and his property value grew by 2.6% every year.
Now,
After three years, the value of Edward's home increased by,
⇒ 3 × (4.8% of $89,000)
⇒ 3 × (4.8/100 × 89,000)
⇒ 3 × 4,272
⇒ $12,816
And, After five years, the value of Edward's home increased by,
⇒ 5 × (2.6% of $89,000)
⇒ 5 × (2.6/100 × 89,000)
⇒ 5 × 2,314
⇒ $11,570
Thus, After eight years, the value of Edward's home increased by,
⇒ $12,816 + $11,570
⇒ $24,386
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Please help me!! I don’t understand
Answer:
Its option 2
Step-by-step explanation:
