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
SIZIF [17.4K]
3 years ago
7

I need to know this please help me

Mathematics
2 answers:
Lunna [17]3 years ago
6 0
Do you know how to solve simultaneous equation?
Anastasy [175]3 years ago
3 0
9x + 5y = -154
4x + y = -22

9x + 5y = -154
20x + 5y = -110 (x5)

Then minus the bottom one from the top one, so at least one of the variables (x or y) cancel out, then you are left with : -11x = -44

Then solve :
-11x = -44
x = 4

Then put -4 back into x, into any of the first two equations

4(4) + y = -22
16 + y = -22
y = -38
You might be interested in
A square has side lengths 12 in. The perimeter is 48 in cm and the area is 144 in2. A second square has side lengths equal to 18
Margarita [4]

Answer:

A. 324 in2

Step-by-step explanation:

length 18 of square gives an area of 324

because area of square l*l which is l squared. so 18 multiply 18 gives 324.

5 0
3 years ago
Read 2 more answers
The length of a rectangular garden is 7x + 3 feet. The width of the garden is 6x – 3 feet. Which expression represents the area
iren [92.7K]

Answer:

42x² - 3x - 9

the area of the garden is:

(7x + 3)(6x - 3)

= 42x² - 21x + 18x - 9

= 42x² - 3x - 9

4 0
3 years ago
If p varies directly with q, and p = 10 when q = 5, what is the value of p when q = 20
Inessa [10]
The value of p would be 40. This is because the ratio of p:q = 10:5. this could be simplify into p:q = 2:1. Applying the ratio p:20 = 2:1, P=40.
8 0
3 years ago
Find the discounted price, to the nearest cent, for a portable CD player that sells for $59.95 and is on sale for 30% off.
mars1129 [50]

Answer:

$ 41.97

Step-by-step explanation:

59.95x30%=17.98

59.95-17.98=41.97

7 0
3 years ago
When is a polynomial factored completely?
Jet001 [13]

Answer:

A polynomial is factored completely when nothing else in the expression can be factored

Example:

x^2+3x-4 completely factored looks like (x+4)(x-1)

8 0
4 years ago
Other questions:
  • elena finds that the area of a house on a scale drawing is 25 square inches. the actual area of the house is 2,025 square feet.
    15·2 answers
  • Find the difference. 22,776,100 - 1,068,720
    14·1 answer
  • Teams A,b,c,d were in a baseball tournament. Each team played each other once. Team A beat team D once. Teams a,b, and c won the
    11·1 answer
  • PLEASE SOMEONE ANYONE​
    8·1 answer
  • Harold bought 3 pounds of red apples and 4.2 pounds of green apples from the grocery store, where both kinds of apples are $1.76
    12·1 answer
  • Make up a rhyme (15 words or more) using the words "Function", "Binomial", and "Polynomial".​
    9·2 answers
  • Directions: Graph each function using a table of Graph each values, then identify its key characteristics.
    9·1 answer
  • Given that s ⊥ t and r ⊥ t, what conclusion can be made?
    7·1 answer
  • Jacob needs 48 ounces of tomatoes for the spaghetti sauce. He is choosing between two brands of tomatoes.
    13·1 answer
  • An aircraft land at a velocity of 300 km hr, and slows down at a rate of −1200 km. hr2. After how many minutes before the aircra
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!