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
Andrej [43]
3 years ago
7

-5x + 9y = 14 -3x + 9y = -6

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
4 0
You can solve it by several ways, but easiest and shortest would be "By Elimination"

So, subtract 2nd equation from 1st, 
-2x = 20
x = -10

Substitute it in 2nd equation, 
-3(-10) + 9y = -6
30 + 9y = -6
9y = -6 - 30
y = -36/9
y = -4

In short, Your Answer would be: (-10, -4)

Hope this helps!
You might be interested in
Scott and Mark are going to see a movie. The clocks show when the movie begins and ends.
Montano1993 [528]
The elapsed time is B, 2 hours and 25 minutes.
3 0
3 years ago
Read 2 more answers
A restaurant bill is $25, and a 20 percent tip should be given to the waiter. Which expression can be used to find the total amo
Yakvenalex [24]
25X0.02 so A Hope is helps :D
3 0
3 years ago
Read 2 more answers
The school paper charges $1.50 for an ad, plus 25 cents per word. Carl wants to spend only $12.00 on the ad.
statuscvo [17]

Answer:

42 words

Step-by-step explanation:

To solve just solve 0.25x +1.50 = 12.00 for x

7 0
3 years ago
Read 2 more answers
Which expression matches the situation?
ElenaW [278]

Answer:

The expression that matches the situation is 90.00 - 3x ⇒ 1st answer

Step-by-step explanation:

Let us solve the question

∵ You went to the mall with $90.00

→ That means the total money with you  = $90.00

∴ The total money = 90.00 dollars

∵ You bought three shirts that cost x dollars each

∴ The cost of a shirt = $x

∴ The number of shirts = 3

→ Find the total cost of the three shirts

∴ The cost of the shirts = 3 × x

∴ The cost of the shirts = 3x dollars

∵ The money left = the total money - the cost of the shirts

→ Substitute the value of total money and the cost of the shirts

∴ The amount of money left = 90.00 - 3x

∴ You have left with 90.00 - 3x dollars

∴ The expression matches the situation is 90.00 - 3x dollars

3 0
3 years ago
A company wants to decrease their energy use by 10%. If their electric bill is currently $1,900 a month, what will their bill be
NemiM [27]

Answer:

A. $1,710

B. Yes, probably.

Step-by-step explanation:

Assuming that a 10% decrease in energy use leads to a 10% decrease in the electric bill:

We'll want to find the value which is 10% less than the original value, i.e., the bill cost which is 90% of the original bill.

90% = 0.9

Since the original bill was $1900, we can just multiply 1900 by 0.9:

1900*0.9=1710

Answer: A bill of $1,710 would equal a 10% decrease.

Since $1,672 is less than that, then they have decreased their energy use by more than 10% which is likely a success.

Answer: Yes, probably.

5 0
3 years ago
Other questions:
  • Plz help for 60 points
    12·2 answers
  • Find the area of this circle. Use 3.14 for pi.
    12·1 answer
  • Each of a regular polygon is 140°,find the number of the sides that ghe polygon has​
    13·2 answers
  • Last question of the day!!
    6·1 answer
  • Jake is hiking a trail to the top of a canyon.The trail is 4.2 miles long he plans yo stop for lunch after he completes 1.6 mile
    5·1 answer
  • I need to simplify (a2b4c)3
    8·2 answers
  • Write an equation in standard form for the line that contains the given pair of points.
    6·1 answer
  • two trains are 500 miles apart when they first enter a colision course. If after, two hours the distance between them is 300 mil
    11·1 answer
  • Compute the following products.<br> (4x+5)(4x−5)<br><br> (4x+5)2
    9·1 answer
  • 12gfdyhgvkjhfvkuhj ,jvhgctkgdcfmtghjm
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!