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chubhunter [2.5K]
3 years ago
15

Evaluate the expression when d= 75 2d + –45d = 0

Mathematics
1 answer:
Aliun [14]3 years ago
6 0

Answer:

- 3225

Step-by-step explanation:

d = 75

2d + ( - 45 d )

= 2 ( 75 ) - 45 ( 75 )

= 150 - 3375

= - 3225

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3 years ago
The equation tan(55 degree) equals StartFraction 15 Over b EndFraction can be used to find the length of Line segment A C. Trian
kaheart [24]

The length of line segment BC is 10.5 inches.

Given that

The equation tan(55 degrees) equals 15/b, which can be used to find the length of Line segment AC.

Triangle ABC is shown.

Angle BCA is a right angle and angle BAC is 55 degrees.

The length of AC is b and the length of hypotenuse BC is 15 centimeters.

We have to determine

What is the length of Line segment AC?

According to the question

Triangle ABC is shown.

Angle BCA is a right angle and angle BAC is 55 degrees.

The length of AC is b and the length of hypotenuse BC is 15 centimeters.

Here, BC is not the hypotenuse of the right triangle ABC.

The length line segment AC is given by,

In triangle ABC

\rm Tan\theta = \dfrac{Perpendicular}{Base}

Where \rm tan\theta = 55 degrees, Perpendicular = 15 and base is b.

Substitute all the value in the equation

\rm Tan\theta = \dfrac{Perpendicular}{Base}\rm\\\\ Tan55= \dfrac{15}{b}\\\\b = \dfrac{15}{Tan55}\\\\b = \dfrac{15}{1.42}\\\\b = 10.5 \ inches

Hence, the length of line segment BC is 10.5 inches.

To know more about Trigonometry click the link given below.

brainly.com/question/13350002

7 0
2 years ago
Hey guys i need some help :)
marishachu [46]

answer:

the candle would be gone by then (done burning)

step-by-step explanation:

ok, so the candle starts off at 4in and it'll already be gone before the first hour passes. (or at least it would be in the case that by every 30 minutes 6in is burned.)

hopefully, this is what you were looking for

good luck :)

have a great day !!

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3 years ago
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3 years ago
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I believe it might be “b” however im nor sure
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3 years ago
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