1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
oee [108]
3 years ago
12

You must use the Substitution method

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
3 0
3x+2y=5w is your answer so your main/real answer is 5w
You might be interested in
How would you write x+3y=3 in y=mx+b format
Triss [41]
X+3y=3
First add subtract the x
3y=-x+3
Then divide 3
Y=-1/3x+1
8 0
3 years ago
Read 2 more answers
Which fraction has a value greater than 0.4
hodyreva [135]
U can see that 5/9 has a greater value thx hope it helped

6 0
3 years ago
Read 2 more answers
Find the surface area of the rectangular prism​
Zielflug [23.3K]

Answer:

A=556

Step-by-step explanation:

lxwxh

5 0
3 years ago
The product of the ages of all teenagers at Joyce’s birthday party last Saturday was 2971987200. The number of 18 year olds who
Elenna [48]

Click here to see ALL problems on Age Word Problems

 Question 1128242: The product of the three ages, in years of three teenagers is 4590. None of the teens are the same ages. What are the ages of the three teen ages? (Use guess and check)

A hat and a jacket cost $100. The jacket cost $90 more than the hat. What are the cost of the hat and the cost of the jacket?

Melody picks a number. She doubles the number, squares are result, divide the square by 3 subtracts 30 from the quotient and gets 18. What are the possible numbers that Melody could have picked? What operation does Melody perform that prevents us from knowing 100% certainly which she picked?

(Scroll Down for Answer!)

Did you know that Algebra.Com has hundreds of free volunteer tutors who help people with math homework? Anyone can ask a math question, and most questions get answers!

OR get immediate PAID help on:

Type Your Question

Go!!!

Answer by greenestamps(9721) About Me  (Show Source):

You can put this solution on YOUR website!

These are three very different problems. The rules of the forum are one problem per post. Please follow those rules in the future.

(1) Certainly guess and check is the easiest way to solve this problem, since you know the three ages are whole numbers. But you should be able to get to the solution with very few if any wrong "guesses" by making your guesses logically.

The product of the three ages is a multiple of 10, and therefore a multiple of 5; since all three ages are in the teens, one of them has to be 15. Then 4590/15 = 306.

You could do guess and check again from there. However, if you note that both the other ages have to be greater than 15, and you know the last digit of the product has to be "6", then the only possible pair of ages is 17 and 18. And indeed 17*18 is 306.

ANSWER: The ages are 15, 17, and 18.

(2) Here is an informal solution method using logical reasoning.

Take away the "extra" $90 that the jacket costs; you are left with a jacket and a hat that each cost the same, and the total is now $100-$90 = $10. That means each of them costs $5. Now add those extra $90 back on to the price of the jacket.

ANSWER: The jacket costs $95; the hat costs $5.

(3) Melody picks a number: Call it x.

 

She doubles the number: It is now 2x.

She squares are result: It is now (2x)^2 = 4x^2.

She divides the square by 3: It is now 4x^2/3.

She subtracts 30 from the quotient: It is now 4x^2/3-30.

The number she ends up with is 18.

Solve the equation that says 4x^2/3-30 = 18:

4x%5E2%2F3-30+=+18

4x%5E2%2F3+=+48

4x%5E2+=+144

x%5E2+=+36

x+=+6 or x+=+-6

ANSWER: The two possible starting numbers are 6 and -6. We get two possible answers because of the step where she squares the number.

6 0
3 years ago
Read 2 more answers
The class decides to make chocolate chip cookies for Mr. Burn’s first day of school in September. Each student needs 3⁄4 of a st
VladimirAG [237]

Answer:

10 1/2 sticks, or 11 sticks with half a stick left over.

Step-by-step explanation:

If every student (and there are 14 students) needs 3/4 stick of butter, the equation is 3/4 x 14 = 10 1/2

3 0
3 years ago
Other questions:
  • write a compound inequality that represents the situation. all real numbers that are greater than –6 but less than 6 a. –6 ≤ x &
    5·1 answer
  • This morning Greg’s car had 25.25 of fuel now 1.4 gallons are left how much fuel did Greg use
    12·1 answer
  • What is the volume of a cylinder with a diameter of 30 units and a height of 14 units?
    15·1 answer
  • Shane has a segment with endpoints C(3, 4) and D(11, 3) that is divided by a point E such that CE and DE form a 3:5 ratio. He kn
    13·1 answer
  • 67.77759 rounded to nearest meter
    13·2 answers
  • PLEASE HELP,, MARKING BRAINLIEST!!!<br><br> Given coordinates N(-1,-11) and P(-1,-3), find NP?
    9·1 answer
  • Any Netflix suggestions to watch?​
    5·1 answer
  • The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a book
    8·2 answers
  • Parallel lines m and n are cut by the transversal line t prove &lt;1 and &lt;4 are supplementary move options to the boxes to co
    6·1 answer
  • function in c that takes three decimal numbers as inputs and finds the sum of those inputs and returns the sum
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!