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3 years ago

To solve this system of equations using substitution, what could be substituted in place of y in the first equation?

1 answer:

6 0

Looking at second equation.. you must put it in y=Mx+b form and so you must add 2x from both side leaving you with 7 +2x or in this case 2x+7

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cho hàm số y = f(x) có đạo hàm liên tục trên R thỏa mãn 2f(2x)+f(1-2x) = 12x2 víu mọi x thuộc R . Phương trình tiếp tuyến của đồ

Nina [5.8K]

Answer:

ask in english

Step-by-step explanation:

then I can help u

6 0

3 years ago

Determine whether y^2=x^2- 3 is a function ?

Sav [38]

It is not . There are multiple x values for the y values.

8 0

2 years ago

What is the diameter, radius, r2, and circumference? 3 cm

Allushta [10]

Answer:

see below

Step-by-step explanation:

given:

radius of a circle = 3cm

find:

1. diameter

2. radius

3. r²

1) diameter = twice the radius = 2 r = 2 (3) = 6 cm

2) radius = 3 cm

3) r² = 3² = 9 cm

8 0

3 years ago

Alexa has finished her culinary training program and is now working full-time as a chef in a hotel resort restaurant. She has tr

otez555 [7]

Answer: The budget of Alexa is increased by $100.

Explanation:

It is given that the current income of Alexa is 3 times of her previous income.

Her previous salary was $800 and current salary was $2400.

Expenses = Rent + Utilities + Groceries + Savings + Bus

The sum of previous expenses is,

Previous expenses = $300 + $60 + $200 + $100 + $30 = $690

The sum of current expenses is,

Current expenses = $300 + $60 + $250 + $150+ $30 = $790

Effect of income on expenses is the difference of current expenses and previous expenses.

Effect of income on expenses = $790 - $690 = $100

Therefore, the budget of Alexa is increased by $100.

3 0

3 years ago

Read 2 more answers

I NEED HELP PLEASE! THANKS :)

Marianna [84]

Answer:

 $y = 2 \: cos \: (\frac{1}{3} x)$ 

option C is the right option.

Explanation:

General expression of a cosine function is:

y=A cos k X

where A is amplitude and 2 pi/k is its period.

In our case,

 $- y = 2 \: cos \: (\frac{1}{3} x) \:$ 

has :

 $amplitude = 2 \\ period = 2\pi \times 3 = 6\pi$ 

hence, the right answer is of option C

hope this helps...

Good luck on your assignment..

7 0

3 years ago

Read 2 more answers