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3 years ago

I need help please

Mathematics

1 answer:

qwelly [4]3 years ago

3 0

Answer:

b = 55°

Step-by-step explanation:

Angles around a point will always add up to 360°

Therefore, we can write an expression where we sum the 3 angles given and equate them to 360°:

(b - 15) + 3b + (2b + 45) = 360

eliminate the brackets and collect like terms:

b + 3b + 2b - 15 + 45 = 360

Combine like terms:

6b + 30 = 360

subtract 30 from both sides:

6b = 330

divide both sides by 6:

6b ÷ 6 = 330 ÷ 6

⇒ b = 55

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a total eclipse in 2003 lasted 2 17/24,minutes in 2005 it lasted 3/8 of a minute how much longer did it last in 2003

Doss [256]

Answer:

Total eclipse was $2\frac{1}{3}$ minutes longer than in 2005.

Step-by-step explanation:

It is given in the question that total eclipse in 2003 lasted $2\frac{17}{24}$ minutes and in 2005 it lasted 3/8 of a minute.

We have to calculate how much longer did it last in 2003.

So we have to subtract the duration in 2003 by duration in 2005

Total time taken in 2003- total time taken in 2005

$=2\frac{17}{24}-\frac{3}{8}$

$\frac{48+17}{24}-\frac{3}{8}$

$=\frac{65}{24}-\frac{3}{8}$

$=\frac{65-9}{24}$

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3 0

4 years ago

Read 2 more answers

ABCD is a quadrilateral such that the measures of three of its interior angles are given as B=122 degrees, C= 75 degrees, D= 51

posledela

Answer:

angle A is 112 degree.

Step-by-step explanation:

quadilateral have 4 angles .

sum of the interior angles of a quadilateral is 360 degree

Here,

angle A = be x

angle B = 122

angle C = 75

angle D = 51

Now,

angle A + angle B + angle C + angle D =360 degree

x + 122 + 75 + 51 = 360

x + 248 = 360

x = 360 - 248

x = 112

4 0

3 years ago

NEED HELP FAST!!! picture is attached.

yuradex [85]

I think the answer could be C

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3 years ago

WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!! (image attatched)

alexgriva [62]

The answer would be the first one

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4 years ago

Evaluate. 5 2/3-2 1/4.1 2/3

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3 years ago

I need help please ​

I need help please