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3 years ago

Simplify ( 5w + 13 ) + ( 2w + 1)

Mathematics

2 answers:

Drupady [299]3 years ago

8 0

Answer:

7w+14

Step-by-step explanation:

Vadim26 [7]3 years ago

6 0

Answer:

10w^2 + 24w + 13

Step-by-step explanation:

use Foil method

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jeka57 [31]

Answer:

see below

Step-by-step explanation:

The problem statement tells you the ratio of force to area is the same for all pairs. This means, for example, ...

3750/250 = 5625/x = y/420

Simplifying, this becomes the two equations ...

15 = 5625/x ⇒ x = 5625/15 = 375

15 = y/420 ⇒ y = 420·15 = 6300

The values of x and y are (x, y) = (375, 6300). . . . . matches choice C

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lys-0071 [83]

Answer:

Step-by-step explanation:

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If sin θ=.55 what is the value of cos θ and explain why

MatroZZZ [7]

Answer:

$cos(\theta)=(+/-)0.84$

Step-by-step explanation:

we know that

$sin^2(\theta)+cos^2(\theta)=1$ ----> by trigonometric identity

we have

$sin(\theta)=0.55$

substitute

$(0.55)^2+cos^2(\theta)=1$

$cos^2(\theta)=1-(0.55)^2$

$cos^2(\theta)=0.6975$

$cos(\theta)=(+/-)\sqrt{0.6975}$

$cos(\theta)=(+/-)0.84$

Remember that

If the sine of angle theta is positive, then the angle theta lie on the I Quadrant or II Quadrant

therefore

If the angle theta is on the I Quadrant the cosine will be positive

If the angle theta is on the II Quadrant the cosine will be negative

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3 years ago