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Travka [436]
4 years ago
14

2x + y = 1 3x + 2y = 0

Mathematics
1 answer:
ale4655 [162]4 years ago
7 0

Answer:

(2,-3)

x=2   y=-3

Step-by-step explanation:

2x+y=1         y=1-2x

3x+2y=0

3x+2(1-2x)=0

3x+2-4x=0

-x+2=0

-x=-2

x=2

2x+y=1

2(2)+y=1

4+y=1

y=-3

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SVEN [57.7K]

Answer:

The square root of 144 will be 12

6 0
3 years ago
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1. Which addition fact can
Andrews [41]

Answer:

The Answer is B 8+ 6=14

Step-by-step explanation:

14-8=6

8+6=14

14-6=8

5 0
2 years ago
The inverse of an exponential function is the quadratic function? true or false?
KonstantinChe [14]
False.

The inverse of an exponential function is a logarithmic function.


Hope this helps!
3 0
3 years ago
A townhouse in San Francisco was purchased for $80,000 in 1975. The appreciation of the building is modeled by the equation: A=8
jonny [76]

Answer:

In 1981 was the building worth double it’s value.

Step-by-step explanation:

Given : A townhouse in San Francisco was purchased for $80,000 in 1975. The appreciation of the building is modeled by the equation : A=80000(1.12)^t, where t represents time in years.

To find : In what year was the building worth double it’s value in 1975?

Solution :

The amount is $80,000.

The building worth double it’s value in 1975.

i.e. amount became A=2(80000).

Substitute in the model,

2(80000)=80000(1.12)^t

(1.12)^t=\frac{2(80000)}{80000}

(1.12)^t=2

Taking log both side,

t\log (1.12)=\log 2

t=\frac{\log 2}{\log (1.12)}

t=6.11

i.e. Approx in 6 years.

So, 1975+6=1981

Therefore, in 1981 was the building worth double it’s value.

4 0
4 years ago
16. Solve for C: 6c - 1 - 4c = -49
lesantik [10]

Answer:

c = -24

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

<u>Algebra I</u>

<u />

Step-by-step explanation:

<u>Step 1: Define</u>

6c - 1 - 4c = -49

<u>Step 2: Solve for </u><em><u>c</u></em>

  1. Combine like terms:                     2c - 1 = -49
  2. Isolate <em>c</em> term:                               2c = -48
  3. Isolate <em>c</em>:                                        c = -24
7 0
3 years ago
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