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3 years ago

When p is false and q is true, then p or q is _______ true

Mathematics

1 answer:

Anastaziya [24]3 years ago

7 0

Answer:

sometimes

Step-by-step explanation:

always and never would not make sense since saying it is possible that it is true or false.

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Show with work please.

kolbaska11 [484]

Answer:

$\csc \left(\theta-\frac{\pi }{2}\right)=0.73$

Step-by-step explanation:

The identity you will use is:

$\csc \left(x\right)=\frac{1}{\sin \left(x\right)}$

So,

$\csc \left(\theta-\frac{\pi }{2}\right)$

$\csc \left(\theta-\frac{\pi }{2}\right)=\frac{1}{\sin \left(-\frac{\pi }{2}+\theta\right)}$

Now, using the difference of sin

Note: state that $\text{sin}(\alpha\pm \beta)=\text{sin}(\alpha) \text{cos}(\beta) \pm \text{cos}(\alpha) \text{sin}(\beta)$

$\csc \left(\theta-\frac{\pi }{2}\right)=\frac{1}{-\cos \left(\theta\right)\sin \left(\frac{\pi }{2}\right)+\cos \left(\frac{\pi }{2}\right)\sin \left(\theta\right)}$

Solving the difference of sin:

$-\cos \left(\theta\right)\sin \left(\frac{\pi }{2}\right)+\cos \left(\frac{\pi }{2}\right)\sin \left(\theta\right)$

$-\cos \left(\theta\right) \cdot 1+0\cdot \sin \left(\theta\right)$

$-\text{cos} \left(\theta\right)$

Then,

$\csc \left(\theta-\frac{\pi }{2}\right)=-\frac{1}{\cos \left(\theta\right)}$

Once

$\text{sec}(-\theta)=\text{sec}(\theta)$

And, $\text{sec}(\theta)=-0.73$

$-\frac{1}{\cos \left(\theta\right)}=-\text{sec}(\theta)$

$-\frac{1}{\cos \left(\theta\right)}=-(-0.73)$

$-\frac{1}{\cos \left(\theta\right)}=0.73$

Therefore,

$\csc \left(\theta-\frac{\pi }{2}\right)=0.73$

3 0

3 years ago

In a class of 20 students,12 were girls and the rest were boys

Ira Lisetskai [31]

It’s definitely A (:

7 0

2 years ago

Read 2 more answers

Will give brainliest

posledela

Answer:

I think its the lifo method im not sure but i had a question like this in class

5 0

1 year ago

What is the y-intercept of the line described by the equation below? <br> Y=6x+8

Ahat [919]

y = mx + b

The b is always the y-intercept, so that means

y = mx + b

y = 6x + 8

The answer is C. (0, 8)!

⭐ Please consider brainliest! ⭐

✉️ If any further questions, inbox me! ✉️

7 0

3 years ago

Read 2 more answers

There is a pair of parallel sides in the following shape.

vitfil [10]

The area of the given figure is 30 square units

<h3>Area of a trapezoid</h3>

Let the given image be a trapezium

The formula for calculating the area of a trapezium is expressed as;

A = 0.5(a+b)h

Let

a = 17

b = 3

h = 3

Substitute into the formu;a

A = 0.5(3+17)*3
A = 10(3)

A = 30 square units

Hence the area of the given figure is 30 square units

Learn more on area of trapezium here; brainly.com/question/16904048

7 0

2 years ago