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3 years ago

How many solutions does the system have?

Mathematics

2 answers:

slavikrds [6]3 years ago

7 0

Answer:

Step-by-step explanation:

Given the 2 equations

y = 3x + 3 → (1)

y = - 2x + 3 → (2)

Substitute y = 3x + 3 into (2)

3x + 3 = - 2x + 3 ( add 2x to both sides )

5x + 3 = 3 ( subtract 3 from both sides )

5x = 0 , then

x = 0

Substitute x = 0 into (1)

y = 3(0) + 3 = 0 + 3 = 3

solution is (0, 3 ) → A

Ilia_Sergeevich [38]3 years ago

5 0

The answer is A ............................

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Prove the following identity true. Show work.

yulyashka [42]

Answer:

The Pythagorean identity states that

$\sin^2 t + \cos^2 t = 1$

Using that we can rewrite the left denominator as:

$1 - \sin^2 t$

Which can be factored as

$(1 - \sin t)(1+ \sin t)$

The numerator we can expand as:

$(1 - \sin t)(1 - \sin t)$

On the right hand side, let's multply numerator and denominator with (1 - sin t):

The total formula then becomes:

$\dfrac{(1-\sin t)(1-\sin t)}{(1 - \sin t)(1 + \sin t)} = \dfrac{(1-\sin t)(1 - \sin t)}{(1+\sin t)(1 - \sin t)}$

There you go... left and right are equal.

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3 years ago

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Vadim26 [7]

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4 years ago

Is 16.5 a rational or irrational number

Mademuasel [1]

Answer:

It is rational

I'm sorry if it's wrong

Step-by-step explanation:

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Irrational: Keeps going on

7 0

3 years ago

Which of these values are farthest from zero 0.75 2/3 and 0.25

leva [86]

.75 is farthest because 2/3 is .66 (infinitely) and .25 is smaller than both

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3 years ago

A person filing her federal income tax return with the Single filing status had a taxable income of $79,950. According to the ta

Tom [10]

Answer:

The income that she will have left over after paying his

federal income tax = $63,775.

Step-by-step explanation:

The amount of taxable income = $79,950

So, the taxable income will be in the range from $33,950 to $82,250.

It means, there will be $4675 fixed tax and additional 25% tax on the amount over $33,950.

The amount over $33,950 = $79,950 - $33,950 = $46,000

The additional tax = 46000 × 0.25 = $11,500 ∵25% = 0.25

So, the total federal income tax will be: $11500 + $4675 = $16,175

Therefore, the income that she will have left over after paying his federal income tax = $79,950 - $16,175 = $63,775.

Keywords: income, income tax

Learn income tax from brainly.com/question/11446109

#learnwithBrainly

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3 years ago