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
zzz [600]
3 years ago
14

HELP PLEASE I NEED IT ASAP IT WILL MEAN A LOT TO ME!!

Mathematics
1 answer:
podryga [215]3 years ago
7 0

Answer:

x=8.499

y=0.167

Step-by-step explanation:

the equation says:x^2-9y^2=72....(1)

x+3y=9.......(2)

divide (2) from (1),it becomes:

x-3y=8

making x subject of formula,

x=8+3y....(3)

submitting (3) into (1),it becomes

(8+3y)^2-9y^2=72

64+48y=72

48y=72-64=8

y=8/48=0.167......(4)

submitting (4) into (2),it becomes

x+3(0.167)=9

x+0.501=9

x=9-0.501

x=8.499

You might be interested in
Write a trinomial expression in standard form that has a degree of 5
rewona [7]

\text{We need to find a trinomial expression in standard form with degree 5.}\\
\\
\text{we know that a trinomial expression is an expression which consists}\\
\text{three terms in it.}\\
\\
\text{also given that the degree of the trinomial is 5, so the highest exponent}\\
\text{appear in the trinomial would be 5.}\\

\text{so if we write a trinomial expression in standard form with degree 5,}\\
\text{the first term must be of the form }x^5.\\
\\
\text{next two terms can be any smaller exponent term or any constant.}\\
\\
\text{thus one such trinomial expression with degree 5 is: }\\
\\
x^5-3x^2+2

3 0
3 years ago
Evaluate the expression when a=-7 and c=6. a-6c​
beks73 [17]

Answer:

-43

Step-by-step explanation:

(-7) - 6(6)= -43

4 0
3 years ago
Mr Prothero places £3003 into a
mamaluj [8]

Answer:

£3,543.54

Step-by-step explanation:

Amount after 2 years = Principal + interest

Get the interest

Interest = PRT/100

Interest = 3003 * 9 * 2/100

Interest = 3003 * 18/100

Interest  = 30.03 * 18

Interest  = 540.54

Amount after 2 years = 3003 + 540.54

Amount after 2 years = £3,543.54

6 0
3 years ago
5x - 2 = 8<br> What the answer
Montano1993 [528]

Answer:

x = 2

Step-by-step explanation:

5x - 2 = 8

5x = 8 + 2

5x = 10

x = 10/5

x = 2

7 0
3 years ago
Read 2 more answers
Henry is staining the wooden floor of a court. The court is in the shape of a rectangle. Its length is 54 feet and its width is
tensa zangetsu [6.8K]

Answer:

Henry would need 12 cans to cover the court

Step-by-step explanation:

1: 30 times 54 = 1620

2: 1620 divided by 135 = 12

8 0
3 years ago
Other questions:
  • What is 805,863 rounded to the nearest hundred thousand?
    9·1 answer
  • PLZ HELP!!! 20 POINTS!!!
    12·1 answer
  • Got 5 Questions I need help on!
    10·1 answer
  • Question 1 of 10
    8·1 answer
  • The height (in feet) of a certain rocket t seconds after it leaves the ground is modeled by
    13·1 answer
  • Look at the picture and tell me the answer
    14·1 answer
  • If p varies jointly as q and the cube of r, when
    8·1 answer
  • Identify the equation in slope-intercept form for the line with the given slope that contains the given point.
    6·1 answer
  • The circumference of a circle is 14.444 miles. What is the circle's diameter?
    10·1 answer
  • (12 − 4) − (6 ÷ 2) − (2 x 2)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!