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3 years ago

Cos (a-b) = cos a cos b + sin a sin b for all values of a and b. True or False

Mathematics

1 answer:

Mrrafil [7]3 years ago

3 0

Answer:

Step-by-step explanation:

true

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Determine the value of the expression -3.75 +4.35 -6.55.

siniylev [52]

-3.75 +4.35 -6.55

-3.75 + 4.35 = 0.6

0.6 - 6.55 = - 5.95

- 3.75 + 4.35 - 6.55 = - 5.95

8 0

2 years ago

For which of the following geometric series can the infinite sum be determined? a1 = –0.25, r = –3 a1 = 0.75, r = 4 a1 = 3, r =

Nataly_w [17]

So, the infinite sum can be determined in the geometric series a₁ = 5, r = -0.5.

For a geometric series the infinite sum is given by s = a/(1 - r) where a = first term, r = common ratio and |r| < 1.

For each of the geometic series given below, we need to determine if |r| < 1.

For a₁ = -0.25, r = - 3, |r| = |-3| = 3 > 1

For a₁ = 0.75, r = 4, |r| = |4| = 4 > 1

For a₁ = 3, r = 2, |r| = |2| = 2 > 1

For a₁ = 5, r = -0.5, |r| = |-0.5| = 0.5 < 1

Since we require |r| < 1 to find the infinite sum and |r| in the last geometric series |r| = 0.5 < 1, the infinite sum can be found in the geometric series a₁ = 5, r = -0.5..

So, the infinite sum can be determined in the geometric series a₁ = 5, r = -0.5.

Learn more about infinite sum of geometric series here:

brainly.com/question/16037289

7 0

3 years ago

Pls tell me how i should draw this

mezya [45]

Answer:

scale drawing you should use a limited unit of measurement so you are not drawing actual scale of the kitchen use 1 to40

8 0

3 years ago

A line passes through the point (5, 1) and is perpendicular to the x-axis. What is the slope of this line?

Rufina [12.5K]

No because if that happened they wouldn’t be able to do it again so yeah

7 0

3 years ago

Can someone please help

Vinil7 [7]

Solving the given equation, the value of v that makes the statement true is:

A. v = 8.

<h3>What is the given equation?</h3>

The equation is:

$12 = 12 + \frac{v - 8}{2}$

Hence:

$\frac{v - 8}{2} = 0$

Applying cross multiplication:

v - 8 = 0

v = 8.

Hence option A is correct.

More can be learned about equations at brainly.com/question/27882730

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5 0

2 years ago