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3 years ago

INCREDIBLY URGENT!!

Mathematics

1 answer:

Gemiola [76]3 years ago

3 0

Answer:

When you see a formula like this, try to operate, so you will see some identities sooner or later. In this case, we have a substraction identity:

\frac{cos ( \alpha - \beta )}{cos \alpha cos \beta } = \frac{cos \alpha cos \beta + sin \alpha sin \beta }{cos \alpha cos \beta } = 1 + tan α · tan β

Step-by-step explanation:

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Solve the equation

12345 [234]

Answer:

Step-by-step explanation:

x+(x+1)+(x+2)+(x+3)=-210

x+1x+1+1x+2+1x+3=-210

4x+6=-210

4x=-210-6

4x/4x=-216/4

x=54

3 0

3 years ago

Help me out please simple

const2013 [10]

A straight line is 180 degrees in measure

The straight line is made up of three angles

--> angle 1

--> angle 2

--> angle with a little square on it

(angle with a little square means it is 90 degrees in measure)

Let's set up an equation

$angle1 + angle2 + 90 = 180\\angle1 + 87 + 90 = 180\\angle1 = 3$

Thus angle 1 is 3 degrees or the second choice

Hope that helps!

5 0

2 years ago

A prize bag contains four country music CDs, eight pop music CDs, and five classic rock CDs. What is the probability of pulling

Reptile [31]

Answer:

for rock it is 0.29 and for country it is. 25

Step-by-step explanation:

5/ 17=.29

4/16=.25

5 0

3 years ago

Read 2 more answers

A cup of cereal can contain 480 milligrams of salt, which is 20% of the recommended daily amount. What is the recommended daily

asambeis [7]

20% goes into 100% 5 times. So you do 480 times 5, which is 2400. So you answer is 2400.

3 0

3 years ago

Which expressions are polynomials?

statuscvo [17]

Answer:

They all are polynomials.

Step-by-step explanation:

Given : Following expression

1) $x^2+5x^{15}$

2) $-x^2+5x$

3) $6x^2+5x$

4) $-7x^2+53x$

The following all are polynomials because polynomials are:

An expression consisting of variables and coefficients or expression more than two algebraic terms and the terms that contain different powers of the same variable(s) involve operations addition , subtraction, multiplication and non-negative integer exponent of variables.

So when we see to these functions they all are a mixture of a polynomial.

7 0

3 years ago

Read 2 more answers