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2 years ago

What is -15x(-7) ( integer operation)

Mathematics

1 answer:

MA_775_DIABLO [31]2 years ago

6 0

$- 15x( - 7) = 105x$
Not much more to say about this. Just multiply the integer by the coefficient.

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Given tan θ = 2 and sin θ < 0. Find cos(θ +pi/4)

Lera25 [3.4K]

Answer:

√10 / 10

Step-by-step explanation:

tan θ > 0 and sin θ < 0, so θ is in quadrant III. That means cos θ < 0.

cos(θ + π/4)

Use angle sum formula.

cos θ cos(π/4) − sin θ sin(π/4)

½√2 cos θ − ½√2 sin θ

Factor.

½√2 cos θ (1 − tan θ)

½√2 cos θ (1 − 2)

-½√2 cos θ

Write in terms of secant.

-½√2 / sec θ

Use Pythagorean identity (remember that cos θ < 0).

-½√2 / -√(1 + tan²θ)

-½√2 / -√(1 + 2²)

½√2 / √5

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2 years ago

The domain for f(x) and g(x) is the set of all real numbers.

Rufina [12.5K]

If you want to multiply the two functions, the answer is a.

In fact, you have

$(3x + 5)x^2 = 3x \cdot x^2 + 5\cdot x^2 = 3x^3 +5x^2$

4 0

3 years ago

-17 rational or irrational

guajiro [1.7K]

Answer:

rational

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Change to standard form.<br> 2x=3y-8

Naily [24]

Standard form is Ax + By = C
Where A is a positive integer
The y needs to be moved to the left side so subtract 3y from both sides.
2x - 3y = -8

3 0

2 years ago

Read 2 more answers

Help me asap pleaseeee

Darya [45]

Answer:

Last option is the correct choice.

Step-by-step explanation:

$\frac{36}{24}=\frac{12}{x}\\\\\Rightarrow x=8$

Best Regards!

3 0

2 years ago