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
geniusboy [140]
3 years ago
10

On your own paper, solve the system of equations using elimination and identify the solution. Always list your answer alphabetic

ally in order pairs.
5e + 4f=9
4e+5f=9

A.(2,2)
B.(1,1)
C.(,1,-1(
D.(-2,-2)
E.IMS
F,NS
Mathematics
1 answer:
Oksana_A [137]3 years ago
4 0
5e + 4f = 9....multiply by -4
4e + 5f = 9 ...multiply by 5
------------------
-20e - 16f = -36 (result of multiplying by -4)
20e + 25f = 45 (result of multiplying by 5)
----------------add
9f = 9
f = 9/9
f = 1

5e + 4f = 9
5e + 4(1) = 9
5e + 4 = 9
5e = 9 - 4
5e = 5
e = 5/5
e = 1

solution is (1,1)


You might be interested in
To rent a certain meeting room, a college charges a reservation fee of $15 and an additional fee of $6 per hour. The chemistry c
Dafna1 [17]

Answer:

To spend at most $93, they need to rent the room less than or equal 13 hours.

Step-by-step explanation:

<u><em>The complete question is</em></u>

To rent a certain meeting room, a college charges a reservation fee of $15 and an additional fee of $6 per hour. The chemistry club wants to spend at most $93 on renting a room. What are the possible numbers of hours the chemistry club could rent the meeting room? Use t for the number of hours. Write your answer as an inequality solved for t,

Let

t ----> the number of hours

we know that

I this problem the word "at most" means "less than or equal to"

The number of hours rented multiplied by the cost per hour, plus the reservation fee, must be less than or equal to $93

so

The inequality that represent this situation is

6t+15\leq 93

solve for t

subtract 15 both sides

6t\leq 93-15

6t\leq 78

Divide by 6 both sides

t\leq 13\ hours

therefore

To spend at most $93, they need to rent the room less than or equal 13 hours.

6 0
3 years ago
I know how to find the volume and height, but can't seem to find the radius. The answer I got was incorrect, but it's the only o
steposvetlana [31]
I say 50 would be your answer
8 0
3 years ago
Which expression is equivalent to(2^3)^-5
Nady [450]

Answer:

hope this helps if not im sorry

Step-by-step explanation:

(2^3)^5

=2^(3*5)

= 2^15

3 0
3 years ago
3/10 minus what equals 2/5?
Jlenok [28]
7/10-3/10=2/5
3/10+1/10=2/5
3 0
3 years ago
Read 2 more answers
True or False? The rule of 72 (or 69) depends on the amount of principal you are saving. *
grin007 [14]
I think answer is trueeee
3 0
3 years ago
Read 2 more answers
Other questions:
  • Find the proportion of the data that must lie in (M-8σ, M+8σ) when M=7.013 and σ=3.125.
    11·1 answer
  • How long would it to drive 8.5 miles at 22 miles mile per hour?
    11·1 answer
  • I need to find the area <br><br>plz explain your answer
    6·1 answer
  • Lenny Lendee purchased a snowblower for $199.95. He paid 25% down and agreed to pay $14.99 for 12 months.
    5·1 answer
  • the area of the base of a rectangular prism shown below is 45 square millimeters. The height is 5 1/2 millimeters. what is the v
    8·1 answer
  • 0.92 is 10 times as much as
    10·1 answer
  • Help pls!!!!!Last question I need
    9·1 answer
  • Please help if you can.<br> Show the steps if you do.
    9·1 answer
  • Hello everybody please help me (this is 6th grade math) <br>​
    12·1 answer
  • Which expression has a sum of one and two twenty ones?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!